원격탐사활용을 위한 딥러닝기술

이명진,이원진,이승국,정형섭,Lee, Moung-Jin,Lee, Won-Jin,Lee, Seung-Kuk,Jung, Hyung-Sup 대한원격탐사학회 2022 대한원격탐사학회지 Vol.38 No.6

이제는 딥러닝 없는 원격탐사 데이터 처리는 상상하기도 어려운 시대가 되었다. 원격탐사의 활용기술 개발을 위해서는 먼저 인공지능(artificial intelligence, AI)을 위한 데이터를 설계 및 구축하고, AI모델을 학습시키는 과정을 거친다. AI모델은 빠르게 발전하여 모델 정확도가 나날이 높아지고 있지만, 모델을 훈련시키는 사람에 따라 정확도의 편차가 발생하고 있다. 결국 AI모델을 훈련시킬 수 있는 숙련도 높은 전문가가 더욱 더 필요한 시대가 되어가고 있다. 특히, 딥러닝기술은 원격탐사활용에 있어 자동화라는 키워드를 제공하고 있다. 예전에는 60% 이하의 정확도만 있었던 기술도 이제는 90%를 넘어 100%의 시대로 가고 있다. 이 특별호에서는 딥러닝기술이 원격탐사에 어떻게 활용되고 있는지에 관한 13편의 논문을 소개한다.

환경공간정보의 이해와 활용

이명진,박욱,송원경,Lee, Moung-Jin,Park, Wook,Song, Wonkyong 대한원격탐사학회 2017 대한원격탐사학회지 Vol.33 No.5

The purpose of this paper is to review the background and purpose of the special issue on Theory of Environment Geospatial Information and Its Applications in Korean Journal of Remote Sensing. The significance of the paper was also discussed. Environmental information refers to environment related information (literature, statistics, images, etc.) in a comprehensive manner. Such environmental information as a local change or issue of the environment is defined as environmental spatial information by developing in a spatial form. Remote sensing data is very useful as direct or indirect data including environmental spatial information on wide-area and local environment. Various applications will be possible not only in the environmental field through several improvements. For this purpose, first, refining and scientificization of technology to build environmental spatial information could be performed. Second, the application field can be expanded by developing the concept and contents of existing environmental spatial information. The third method is continuous increase of the application of existing environmental spatial information. In this paper, the direction of development was examined that reflects recent changes of environmental spatial information such as conversion of data formats and integration with ICT (Information and Communications Technologies). In particular, the basic technology for the construction of environmental spatial information was reviewed through various papers. Through the studies related to the above, utilization of domestic environmental spatial information would be diversified. Also, the development of environment policy and efficient management of environmental factors could be possible.

계층분석법(AHP)과 GIS를 이용한 고양시 일대의 지하수오염 관리우선순위 평가

이명진,현윤정,김영주,황상일,Lee, Moung-Jin,Hyun, Yunjung,Kim, Youngju,Hwang, Sang-Il 한국지하수토양환경학회 2013 지하수토양환경 Vol.18 No.5

In this study, priority for groundwater contamination management was assessed based on regional vulnerability in Goyang-si area, Gyonggi-do, Korea using analytic hierarchy process (AHP) and geographic information system (GIS). We proposed a concept for regional vulnerability to groundwater contamination with using socio-environmental vulnerability factors, which can be classified into three properties including regional hydrogeological property, contamination property, and groundwater use property. This concept is applied to Goyang-si area. For AHP analysis, an expertise-targeted survey was conducted. Based on the survey, a total of 10 factors (criteria) and corresponding weights for regional vulnerability assessment were determined. The result shows that regional contamination property is the most weighted factor among the three property groups (hydrogeological property: contamination property: groundwater use property = 0.3: 0.4: 0.3). Then, database layers for those factors were constructed, and regional vulnerability to groundwater contamination was assessed by weighted superposition using GIS. Results show that estimated regional vulnerability score is ranged from 22.7 to 94.5. Central and western areas of Goyang-si which have groundwater tables at shallow depths and are mainly occupied by industrial and residential areas are estimated to be relatively highly vulnerable to groundwater contamination. Based on assessed regional vulnerability, we classified areas into 4 categories. Category 1 areas, which are ranked at the top 25% of vulnerability score, take about 2.8% area in Goyang-si and give a high priority for groundwater contamination management. The results can provide useful information when the groundwater management authority decide which areas should be inspected with a high priority for efficient contamination management.

통합정보제공을 위한 공간정보 기반의 국내 능선축 구축

이명진 ( Moung Jin Lee ),이수재 ( Soo Jae Lee ),이창연 ( Chang Yeon Lee ) 한국지리정보학회 2014 한국지리정보학회지 Vol.17 No.2

ridgelines for public. To do so, fist of all, Korean mountain ridgelines including Deagan, Jeongmeak, Gimeak, Jimeak, are built as spatial information. Second, Encoding of mountain ridgelines is conducted to analyze main and divaricate ridgelines systematically as grades of ridgelines. Third, based on spatial information, present condition using natural environment including geographical information, ecological zoning map, environmental conservation value assessment map, is analyzed. Finally, as a method integrating and using the aforementioned three information, the system providing integrated information based on GIS is proposed, To build the GIS data of Gimeak and Jimeak, they should be analyzed in more detail than Beakdu Deagan and Jeongmeak, so existing methodology to build mountain ridgelines based on GIS is improved. According to the distance of each mountain ridgeline, they are separated into five grades, and encoding of each mountain ridgeline based on Beakdu Deagan is applied to all mountain ridgelines to figure out the present condition of ridgelines themselves. In addition, according to the distance of each mountain ridgeline, it is separated into three areas: core, buffer, median zone. Based on three zones, the way to make use of the information efficiently related to mountain ridgelines is proposed. This study systematizes Korean mountain ridgelines which did not have systematic structures and then analyzes systematic mountain ridgelines. Based on this analysis, this study finds the way to makes use of information related to mountain ridgelines effectively.

환경영향평가 고도화를 위한 공간정보 활용 체계 구축 (Ⅰ)

이명진 ( Moung-jin Lee Et Al. ),맹준호,이영준,윤정호,이정호,이선민,조남욱 한국환경연구원 2018 기본연구보고서 Vol.2018 No.-

The Environmental Impact Assessment (EIA) has been maintained as an independent legal system in Korea since 1993, and changes in its surrounding environment such as the disclosure of internal information in EIA reports, the disclosure of review opinions and ROD (Record of Decision), false or insufficient EIA reporting, and the establishment of an information platform for the EIA life cycle have been discussed a lot recently. This study aims to suggest efficient measures to reflect these changes and meet the needs of the times. Spatial data in recent EIA reports is used through simple methods such as expressing the boundary of development project sites, and the surveyed points and values of each environmental medium. Changes in the EIA system, however, require the ‘disclosure of internal information’ in EIA reports, the ‘prevention of direct or indirect false and insufficient EIA reporting’ by searching, sharing and utilizing the values of each environmental medium measured in project sites or their neighboring areas for decision-making in the EIA. The ‘establishment of an information platform for the EIA life cycle’ is also required. Basically, the utilization of spatial data needs to be expanded in order to efficiently achieve these changes. As a measure to meet the changes in the EIA system and the surrounding environment mentioned above, it is necessary to integrate “data-based” techniques that prospectively convert natural and social science methodologies and have been recently used around the world. This study identified that various environmental issues have occurred in a certain spatial range and that most data in actual EIA reports can be established as spatial data. The ultimate goal of this study is to shift the practical goal of the advancement of South Korea’s EIA system into a data-based system, utilizing spatial data as a range and method. Domestic and overseas cases that utilized spatial data in the EIA system were surveyed. In particular, EIA reports issued in other countries including the United States, Germany, Japan and Iceland were thoroughly analyzed, and, by doing so, their current status and three implications for utilization were obtained. First, the spatial data available in each country by environmental medium is actively utilized in EIA reports. Second, the system for connecting spatial data and the definitions of spatial data (coordinates, attributes, the composition of tables, etc.) are clear. Third, spatial data is utilized as a basic item for the disclosure of data in EIA reports to prevent any distorted or insufficient reporting. EIA reports issued in South Korea were also reviewed, and it was found that the utilization of spatial data in various environmental media were directly and indirectly mentioned in documents, including the practical manual for strategic EIA and the manual for reviewing EIA reports. However, spatial data that supported actual EIA-related tasks was limited to legal and institutional regulation data (3 out of 21 media subject to EIA, a total of 12 thematic maps) and spatial data only for reference (5 out of 21 media subject to EIA, a total of 8 thematic maps). Domestic cases were compared to implications obtained from overseas cases. In terms of the first implication that ‘spatial data available in each country by environmental medium is utilized in EIA reports,’ data available in South Korea is scattered around various institutions in different forms, and data in different forms needs to be pre-treated after obtaining it. Therefore, it is necessary to establish measures that can efficiently utilize available spatial data and reduce the time, cost and efforts of non-professionals who pre-treat spatial data. In terms of the second implication that ‘the system for connecting spatial data and the definitions of spatial data (coordinates, attributes, the composition of tables, etc.) are clear,’ there is no definition of spatial data utilized in the EIA system in South Korea, and thus national standard coordinates and international standards of data table need to be applied to address the issue. This study focused on the status and implications of domestic and overseas cases. In analyzing the status of utilized spatial data by case, data that has been utilized in EIA reports in Korea (divided into generation, direct utilization and reference) were listed, and the existence of established spatial data was also identified to suggest measures to promote the utilization of spatial data. A total of 30 EIA reports were analyzed, and 21 environmental media were identified. Out of all of them, 15 environmental media (weather, air quality, water environment, marine environment, topographic and geological features, etc.) utilized spatial data directly or indirectly, and they were divided by environmental media as follows: 5 for weather; 7 for air quality; 13 for water environment; 7 for land use; and 16 for topographic and geological features. In particular, upon consideration of how well the data were utilized in the actual assessment process and how accessible they were in the data collection process, each data was assessed, and operational considerations were discussed based on the characteristics of each assessment area and specific item to increase the policy acceptance of research results. Meanwhile, in the process of EIA, new data would be generated by directly measuring or predicting the environmental impact of individual projects, and the data were listed in detail in this study to ensure the data can be utilized in the process of collecting and processing data, and developing plans to utilize such data in the future. As a measure to promote the utilization of spatial data in the EIA system in South Korea, this study sought to establish an inventory of spatial data scattered around various institutions to ensure the data can be actively utilized in the process of writing, reviewing and consulting EIA reports. To establish an inventory of and analyze spatial data utilized in the EIA, spatial data that can be utilized in the EIA were listed, based on a list of environmental spatial data provided by key government agencies, public organizations and public information systems. A complete enumeration survey was conducted in the early stages of this study, and about 348 items of spatial data related to all environmental media were collected, with 138 out of them identified as ones that could be utilized in EIA. Considering their periodic update cycles, 68 items of spatial data were finally selected. Key considerations in establishing an inventory in this study included time to establish, update data, and integrated applicability. A list of spatial data was suggested based on this, focusing on data that can be provided through an Open Application Programmer Interface (Open API). In addition, the data was compared with other data that was utilized in EIA cases, and duplicate and new items were identified. A total of 54 items of spatial data including 19 new ones were listed and included in the inventory that can be utilized in EIA in the future. Detailed information including the final list of the inventory, the composition of data, update cycles, URL addresses for the Open API was provided in the appendix. As a measure to promote the utilization of spatial data in the EIA, the definitions of the coordinate system and data tables, which was identified as an urgent issue to be addressed in the current EIA system, were presented. An application method of the national standard coordinate system established in 2002 was suggested in this study. In addition, this study suggested a way that the coordinate system can be applied to the EIA through open source-based spatial data programs in order to ensure the data is not limited to a certain commercial program for spatial data, but to ensure areas defined in this study can be actively utilized by those involved in the field of EIA. This study also established its own standards of spatial data tables that can be utilized in EIA based on domestic and overseas spatial data standards (KSDI and OGC). The established coordinate system and data table standards were applied to the original EIA reports of projects conducted in 2016, and spatial data on topographic and geological features were established. Based on the established data, trends in the entire EIA projects in 2016 (27 projects: 5 for roads, 12 for industrial complexes, 3 harbors, 7 for urban development) and the characteristics of a priority project (the 2nd Aero Polis District Project in Cheongju) were efficiently analyzed. In terms of regional distribution (at the level of local governments), there was no project subject to issuing of an original EIA report in Jeollabuk-do, Daegu and Daejeon in 2016, while there was one road construction project in Gangwon that was connected to Chungcheongbuk-do. Their basic conditions were analyzed, and the average ground cutting volume of projects conducted in 2016 was 823.168㎥. The maximum Geomorphological Change Index (GCI) was 874, and the maximum height of retaining walls was 13.5m. In the case of the 2nd Aero Polis District Project in Cheongju, the maximum difference between the ground cutting volume and the filling volume was 2,660,000㎥, and the GCI was 8. The maximum height of retaining walls was 7m. As such, the characteristics of the priority project were extracted, along with the trends of all projects in 2016. Through this pilot study, all EIA projects and those that showed unique characteristics in a specific year were analyzed in connection with each other based on their overall trends and characteristics, and the characteristics of each project were identified and analyzed, which demonstrates the effectiveness of the established coordinate system and data table standards. Policy recommendations were suggested from four perspectives. First, utilization of spatial data was recommended as a practical tool to respond to changes in EIA-related policies. The changes in the EIA system mentioned above can be responded to not by establishing declarative policies, but by expanding the utilization of spatial data as a practical tool to disclose actual data (focused on spatial data), to expand the participation of the public (map-based infographics) and to prevent insufficient reporting (sharing information through information disclosure). As preparation is planned for the revision of the Environmental Impact Assessment Act from 2019, “the efficiency of (spatial data-based) survey methods” needs to be reflected as a measure to share internal data in EIA reports and realize spatial data-based field surveys (marking surveyed areas, data writing, etc.) based on the results of this study. Second, it is recommended to improve the process of collecting, establishing and sharing EIA data. The current EIA-related laws and regulations do not mention the collection, processing, establishment and utilization of data for writing, reviewing and consulting EIA reports. It is necessary to improve this situation, and to reflect the standardized and systematized processes of collecting and establishing internal data in EIA reports with laws and regulations. As the results of this study mentioned above show, the spatial data-based system for managing internal data in EIA reports needs to be reflected in the laws and regulations, and standardized data needs to be defined prior to doing so. EIA data is highly likely to be utilized in responding to various environmental issues in the future, and a system to share data should be established in this respect. Third, the results of this study can be reflected in the EIA system. A system that can currently represent and provide spatial data related to the EIA system is the Environment Impact Assessment Support System (EIASS). The inventory established in this study can be linked to the EIASS to the extent that it can be technically connected to ensure the inventory can be utilized in actual sites where an EIA is performed. By doing so, the results of this study do not simply remain in literature, but can be reflected in policies and in information systems that implement the policies. These policies are expected to increase convenience for the public as well as those working in this field, thus strengthening the original role of EIA. Fourth, manuals related to EIA need to be implemented. There are various manuals and guidelines available for writing, reviewing and consulting EIA reports by stage, project and environmental medium in the current EIA system, such as the practical manual for strategic EIA and the manual for reviewing and writing EIA reports. These manuals indirectly mention spatial data as “data related to forest floor,” rather than provide clear definitions of various spatial data by environmental medium. They even mention the utilization of ‘degree of green naturality (DGN)’ that is no longer updated. For this reason, it will be possible to actualize the utilization of spatial data in various EIA-related manuals and to promote it by reflecting the inventory of EIA spatial data established in this study. Ultimately, nationally certified spatial data continues to be developed and improved, and it is highly likely to be utilized in overall areas of environment. This can also be considered and reflected in the EIA system going forward.

ICT 발전트렌드에 대응하는 공간정보의 환경이슈 적용 체계 구축 : 빅데이터 분석과 위성영상 활용을 중심으로

이명진 ( Moung-jin Lee ),이정호 ( Jeongho Lee ),윤정호,심창섭,김근한,채성호,이선민 한국환경연구원 2017 기본연구보고서 Vol.2017 No.-

This study aims to conduct a case study of best practices overseas and a pilot study to deal with major environmental issues in Korea through integration of ICT that has recently become a major issue, focusing on satellite images among various kinds of environmental spatial information. The study analyzed the case in which satellite images were most frequently used in all of environmental spatial information based on the study results made in the previous year. In addition, it analyzed the characteristics of satellite images in Korea and overseas, and examined the cases in which they were used in the field of environment. Furthermore, an applicable technology roadmap was drawn up to apply the case in which satellite images and ICT are integrated ― detecting drought by analyzing the variation of soil moisture ― to Korea, and a pilot study was conducted on the basis of the roadmap in Jeonbuk. There is more and more use of satellite images as an actual tool to resolve various environmental issues as shown in the previous year’s research findings. Thus, to cope with environmental problems through precise earth observation, South Korea will manage at least 8 satellites by 2020. Considering the technical characteristics of the research topic which is integration and use of environmental spatial information of satellite images and ICT, this study comparatively analyzed satellite images classified into earth observation satellites, meteorological/ocean/environmental satellites, and geostationary environmental satellites. In addition, it studied cases in which multi-sensor satellite images are used, especially verifiable projects from overseas about integration and use of satellite images and ICT. Moreover, multifaceted analysis was attempted to empirically review measures against environmental issues through integration and use of environmental spatial information of multi-sensor satellite images and ICT by conducting a detailed analysis by period and field in order to determine which satellite images in particular are mainly used in Korea, using text mining among big data analysis. Based on this analysis, a technology roadmap was drawn up, which is the technical system of integration and use of satellite images and ICT in the actual case of soil moisture. A pilot study was conducted to select the study area for actual implementation of the technology roadmap. Then a method was implemented to analyze and use the data required for observation and verification using satellite images based on ICT. In addition, an application plan was presented based on restructuring of integration and use of ICT and satellite images developed later. The characteristics of local and global satellite images were analyzed and summarized, which can be utilized in the current and future environment field. Data of local and global satellites were also investigated and summarized by classifying them into earth observation satellites (Arirang series, Landsat series), meteorological/ocean/environmental satellites (Chollian series, etc.), and geostationary environmental satellites (TEMPO, Chollian-2B GEMS, etc.). In the case study of using multi-sensor satellite images, total 55 literatures were examined, which used domestic earth observation satellites (Arirang series), meteorological/ ocean/ environmental satellites (Chollian series), and environmental thematic maps. Total 15 cases including hydrologic disasters were examined in the case of using domestic earth observation satellites, total 18 cases including studies on soil moisture were examined in the case of using domestic meteorological/ocean/environmental satellites, and total 22 cases including selection of soil erosion factor were used in the case of using environmental thematic maps. These 55 cases were analyzed in 6 fields: disaster, agriculture, forest, ocean, water quality and climate. As a result of analyzing cases of Korea’s leading satellites Arirang and Chollian as well as environmental thematic maps, about 50% of 55 cases were directly or indirectly related to soil moisture. More specifically, direct or indirect correlation with soil moisture was found in 9 out of 14 cases in the disaster category, 7 out of 7 cases in the agriculture category, 3 out of 8 in the forest category, 1 out of 3 in the ocean category, 5 out of 17 in the water quality category, and 1 out of 6 in the climate category. This showed that research on soil moisture is adequate for research on integration and use of domestic satellites and thematic maps in the field of environment. Based on the above, a case study was conducted on the integration and use of soil moisture-related satellite images and ICT. The advanced cases about integration and use of satellite images and ICT included ‘AfSIS project’, ‘WEAM4i project’, and ‘ERMES project’. This study examined and summarized which technical role is performed by satellite images and ICT in the environmental issues of soil moisture for each case. In analyzing the integration and use of multi-sensor satellite images using big data, the text mining method was used, which is a method of analyzing unstructured data and natural language among various methods of big data analysis. This was conducted in a network analysis through the self-developed text mining program based on the R program developed in the previous year. A detailed analysis was conducted for each time and field regarding which satellite images are mainly used in Korea. In addition, the theoretical background of the integration and use of multi-sensor satellite images was analyzed. This was categorized into spatial resolution, spectral resolution and temporal resolution to present integration method. Based on the above, central spectral wavelength range, and spatial resolution were elicited, which form the basis of integration and use of multi-sensor satellite images in the field of environment. It is necessary to integrate and use the earth observation satellites with good spatial resolution and meteorological/ocean/environmental satellites with good temporal resolution as a integration and utilization of multi-sensor satellite images. In particular, it is necessary to use earth observation satellites that can be ingegrated in 300-500 nm wavelength band provided by Chollian 2B. In restructuring the use of environmental spatial information focusing on satellite images that applied ICT, a measure to resolve actual environmental issues of soil moisture was presented based on the aforementioned plan of integration and use. To this end, a technology roadmap was drawn up to establish the application and utilization scheme of satellite images on soil moisture and ICT, which is intended to apply global advanced projects related to soil moisture (integration of satellite images and ICT) in Korea. More specifically, a technological system is established and presented to apply the integration and use of soil moisture-related satellite images and ICT from overseas verifiable projects in Korea through the following steps: 1) acquiring soil moisture data using satellite images, 2) linking external data by establishing the ICT platform, and 3) providing analysis and utilization services. A pilot study was conducted by selecting an actual study area for demonstration in order to implement the method to analyze and use the data by linking ICT-based external data and observing local soil moisture among the content of technology roadmap. Finally, this study restructured the plan to integrate environmental spatial information focused on satellite images with ICT to resolve environmental issues of soil moisture into a soil moisture time-space monitoring system. The system to apply to environmental issues using soil moisture satellite images and ICT need soil moisture data and climate/air observation data derived from multi-sensor satellite images of earth and environmental observation satellites, as well as in-situ data on soil moisture and related thematic maps. The available environmental spatial information are produced and managed by Korea Aerospace Research Institute, National Environmental Satellite Center, Korea Meteorological Administration, Rural Development Administration, and KEI. Based on this data, ICT such as ‘big data platform,’ ‘artificial intelligence cognitive computing,’ ‘cloud computing,’ ‘IoT (Internet of Things),’ and ‘5G wired and wireless network’ can be used to predict agricultural production, forecast drought damages, provide customized services for consumers such as farming data, and support policy decision making. Review of policy suggestions was carried out in four views. The first is the need to renew and upgrade the environmental thematic maps (content and cycle). The most fundamental element of the environmental thematic map is land cover map, which is made based on satellite images and aerial photographs. In other words, to renew and upgrade the land cover maps as well as environmental thematic maps, it is necessary to integrate basic data focusing on satellite images and latest ICT in the right place. This can be actively used as the basic data to create new industrial values for the general public based on quaternary industries. Thus, it is necessary to actively invest in technological development and conduct research to renew land cover maps and related environmental thematic maps. The second is the need to reestablish the systematic status of satellite images. In the current legal-systematic regulations related to satellite images in Korea, satellite images are a type of satellite information (including communications, sound and voice), without providing their purpose of creating information and distinguishing or defining satellite information according to their use. Information from satellite images in the form of remote sensing can be used as spatial information in various issues of national life, such as environment, climate, land management, transportation, disaster and climate change. integration of data among multi-sensor remote sensing satellites and integration among different fields can be relatively easy, and demands for this is expected to grow in the future. In other words, there is a need for a new system regarding management and use of remote sensing satellite information. The third is the need to expand accessibility to satellite image data. To actualize the potential for policy application with the use of satellite images as well as integration with other fields like ICT, it is necessary to gradually ease the current access control of satellite information. Provisions about information security in laws and systems related to satellite image data must be amended. In addition, security regulations related to satellite images managed by government departments and affiliated agencies related to information security and military security must also be improved immediately, with focus on alleviating access to information. The fourth is the need to increase participation of private enterprises supporting the implementation of the new government policies. The major strategy in the 100 major government projects by the new government is creating jobs, and development of processing software, which is the essence of remote sensing satellite information service, can be acknowledged as the key technology of new future growth engine. Furthermore, not large companies but small and medium-sized enterprises (SMEs) or startups can focus on this business in terms of market size. Therefore, it is important to nurture service startups or specialized SMEs in the fields of remote sensing, ICT and integration and use of these fields as a major part of governance in the new government. It is also necessary to politically encourage the participation of private enterprises instead of having the government or a national institution lead the entire project from data processing and distribution after producing raw satellite images.

ICT 발전트렌드에 대응하는 공간정보의 환경이슈 적용 체계 구축

이명진 ( Moung-jin Lee ),이정호 ( Jeougho Lee ),윤정호,김근한,오관영,박보영,한지현 한국환경연구원 2016 기본연구보고서 Vol.2016 No.-

The purpose of this study is to converge various environmental spatial information and advanced ICT (Information and Communication Technology) technology, to develop cases that are instantly applicable to the environmental issues that have recently emerged and ultimately to suggest their efficient utilization by reforming the ways environmental spatial information is utilized. Considering the technical characteristics of the theme of this study ― the convergence and utilization of environmental spatial information and ICT ― this study reviewed the status of established environmental spatial information, relevant cases and previous studies about how ICT is being applied in the area of environment. In addition, text mining analysis, one of the big-data analysis techniques, was performed on domestically-published papers in environmental areas that utilized spatial information and ICT. By doing so, this study attempted a multifaceted analysis to empirically review measures to address environmental issues by using spatial information and ICT. Through the review of early studies and case studies of how environmental spatial information is established, it was found that the environmental spatial information that 22 public agencies (the Ministry of Environment, the Korea National Park Service, the National Institute of Ecology, etc.) have already obtained and can establish going forward accounted for 53.8% of the 837 data types of the entire system, and 74.9% in case of environmental thematic maps. To review the cases and the status of how ICT is used in environmental areas, we divided ICT into 9 categories including green ICT (public and industrial convergence services), big data (big data platforms), and artificial intelligence (AI and cognitive computing). The definition, role and market condition of each ICT was reviewed, and cases in which ICT was directly used in environmental areas in the United Kingdom, Germany, China and South Korea were collected and analyzed. For a meta analysis of the utilization of environmental spatial information and ICT in environmental areas, a text mining technique used to analyze atypical data and natural languages among big data analysis methods was employed. In total, 1,228 domestically-published papers acquired from the NDSL (http://www.ndsl.kr) were analyzed. The results of the text mining analysis are divided into two groups. First, the status of the utilization of environmental spatial information in environmental areas in South Korea was analyzed, and the results showed that the utilization of environmental spatial information has continued to increase from 1996 to 2015. The results of the keyword frequency analysis of the utilization of environmental spatial information showed that the area with the highest frequency rate was “environment in general“ covering agriculture, environmental education, land coverage and others (40.85%). According to the results of keyword time series analysis, for the period between 1996 and 2000 the share of the studies on “climate“ was the highest, but since 2001, the share of the studies on “environment in general“ has been on the rise. The results can be attributable to the growing attention to environmental education and the application of environmental technology to areas like “agriculture,” and “environmental education” since 2001. Through keyword correlation analysis, 80 correlation rules were generated in total. The category that generated the most correlation rules among environmental areas was “environment in general (17),” followed by “climate (16),” “biodiversity (11),” “soil quality (11),” “water quality (9),” “air quality (5),” “marine health (5),” “hazardous materials & health care (3),” “waste (2),” and “noise (1).” Second, the status of the utilization of ICT in environmental areas was analyzed. The results showed that, for the period between 1996 and 2015, the largest amount of papers (68) among the 359 collected papers were published in 2012, and the number has gradually increased since then. The results of the keyword frequency analysis of the utilization of ICT showed that the frequency rate of the “environment in general” category was the highest (38.60%). The analysis results of the “environment in general” and “climate” categories were very high, similar to those of the utilization of environmental spatial information mentioned above. According to the results of keyword time series analysis, the share of the studies on “public convergence service” was the highest. The analyzed studies on “public convergence service” roughly covered the concepts and status of the utilization of ICT in medical, national defense, and health care fields. In other words, instead of discussing detailed measures to directly utilize ICT-based technologies in each field, they focused only on setting a conceptual direction for the improvement of such fields through the integration of ICT. Through keyword correlation analysis, 17 correlation rules were generated in the “environment in general” category, followed by “climate (15),” “water quality (9),” “air quality (7),” “biodiversity (4),” “hazardous materials & health care (2),” “man-made disaster (2),” “soil quality (2),” and “marine health (1).” To provide an example of improving the utilization of environmental spatial information by reflecting ICT, the current status of South Korea`s environmental spatial information mentioned above, and the up-do-date status and applicability of ICT were reviewed. First, technology maps were formulated based on the results of the text mining analysis to obtain quantitative results. Among the contents of the technology maps, two key environmental issues (heat wave caused by climate change, and earthquake among natural disasters) were selected. Measures were suggested to address each of the two issues by converging the reviewed environmental spatial information and ICT in this study. A framework for addressing heat wave by tapping into ICT first requires 5 types of environmental spatial information that can be utilized (satellite image, climate change scenario & atmospheric observation data, disaster-related data, water resource data, and environmental statistics & spatial information). Each of the applicable spatial information is being produced and managed by public agencies including the National Geographic Information Institute, the Korea Meteorological Administration, the Ministry of Environment, the Ministry of Land, Infrastructure and Transport, and the Korea Environment Institute (KEI). Based on the information, it is possible to reform the current heat wave alert service for the public into a more detailed and consumer-centered alert service by utilizing content-based green ICT such as “public convergence service,” “artificial intelligence cognitive computing,” and “big data platform.” A framework to address earthquake by utilizing ICT also requires the same 5 types, in addition to information on seismic center and magnitude, and environmental infrastructure. Each of the applicable spatial information is produced and managed by public agencies such as the National Geographic Information Institute, the Korea Meteorological Administration, the Ministry of Environment, the Ministry of Land, Infrastructure and Transport, the Korea Expressway Corporation and the Korea Environment Corporation. By utilizing content-based green ICT such as “public convergence service,” “artificial intelligence cognitive computing,” and “big-data platform” based on the information, the current earthquake alert service can be improved to include real-time alert system, information distribution through various media, AI-based system to handle civil complaints, and social infrastructure damage estimation. Policy recommendations were made from two perspectives. The first is the necessity of R&D on the convergence of ICT and environmental areas. Early studies only focused on the concept and possibility of the utilization and application of ICT rather than discussing cases of direct application. There is almost no case where ICT was directly applied to address large-scale environmental issues. In other words, environmental spatial information needs to be established according to the purpose of each case, and to converge ICT in the right place at the right time. By doing so, a proactive response system should be established to address the issues that continue to occur due to climate change and natural disasters. The second is the necessity of pursuing R&D on convergence across agencies. For the convergence of ICT and environmental areas, it is essential to facilitate cooperation between the public agencies that establish environmental spatial information and those that develop ICT. Thus, cross-organizational collaboration is needed to promote actual cooperation and to address environmental issues through efficient R&D and the distribution of research results.

GCI(Geospatial Correlative Integration) 및 확률강우량을 고려한 인제지역 산사태 취약성도 작성

이명진 ( Moung Jin Lee ),이사로 ( Sa Ro Lee ),전성우 ( Seong Woo Jeon ),김근한 ( Geun Han Kim ) 한국환경연구원 2013 환경정책연구 Vol.12 No.3

The aim is to analysis landslide vulnerability in Inje, Korea, using GCI(Geospatial Correlative Integration) and probability rainfalls based on geographic information system (GIS). In order to achieve this goal, identified indicators influencing landslides based on literature review. We include indicators of exposure to climate(rainfall probability), sensitivity(slope, aspect, curvature, geology, topography, soil drainage, soil material, soil thickness and soil texture) and adaptive capacity(timber diameter, timber type, timber density and timber age). All data were collected, processed, and compiled in a spatial database using GIS. Karisan-ri that had experienced 470 landslides by Typhoon Ewinia in 2006 was selected for analysis and verification. The 50% of landslide data were randomly selected to use as training data, while the other 50% being used for verification. The probability of landslides for target years (1 year, 3 years, 10 years, 50 years, and 100 years) was calculated assuming that landslides are triggered by 3-day cumulative rainfalls of 449 mm. Results show that number of slope has comparatively strong influence on landslide damage. And inclination of 25~30°, the highest correlation landslide. Improved previous landslide vulnerability methodology by adopting GCI. Also, vulnerability map provides meaningful information for decision makers regarding priority areas for implementing landslide mitigation policies.

기후변화 연동 지하수 함양량 산정 모델 개발 및 정책방향 고찰

이명진 ( Moung Jin Lee ),이정호 ( Joung Ho Lee ),전성우 ( Seong Woo Jeon ),홍현정 ( Hyun Jung Houng ) 한국환경연구원 2010 환경정책연구 Vol.9 No.2

Global climate change is destroying the water circulation balance by changing rates of precipitation, recharge and discharge, and evapotranspiration. The Intergovernmental Panel on Climate Change (IPCC 2007) makes changes in rainfall pattern due to climate system changes and consequent shortage of available water resource a high priority as the weakest part among the effects of human environment caused by future climate changes. Groundwater, which occupies a considerable portion of the world`s water resources, is related to climate change via surface water such as rivers, lakes, and marshes, and direct interactions, being indirectly affected through recharge. Therefore, in order to quantify the effects of climate change on groundwater resources, it is necessary to not only predict the main variables of climate change but to also accurately predict the underground rainfall recharge quantity. In this paper, the authors selected a relevant climate change scenario, In this context, the authors selected A1B from the Special Report on Emission Scenario (SRES) which is distributed at Korea Meteorological Administration. By using data on temperature, rainfall, soil, and land use, the groundwater recharge rate for the research area was estimated by period and embodied as geographic information system (GIS). In order to calculate the groundwater recharge quantity, Visual HELP3 was used as main model for groundwater recharge, and the physical properties of weather, temperature, and soil layers were used as main input data. General changes to water circulation due to climate change have already been predicted. In order to systematically solve problems associated with how the groundwater resource circulation system should be reflected in future policies pertaining to groundwater resources, it may be urgent to recalculate the groundwater recharge quantity and consequent quantity for using via prediction of climate change in Korea in the future and then reflection of the results. The space-time calculation of changes to the groundwater recharge quantity in the study area may serve as a foundation to present additional measures for the improved management of domestic groundwater resources.

레이더 위성영상을 활용한 침수피해 지역 파악 및 완화방안 연구

이명진 ( Moung Jin Lee ),명수정 ( Soo Jeong Myeong ),전성우 ( Seong Woo Jeon ),원중선 ( Joong Sun Won ) 한국환경연구원 2009 환경정책연구 Vol.8 No.2

This study applied satellite radar imagery to identify flooded areas and examined post-flooding conditions using time-series satellite radar imagery for the development of flood damage mitigation strategies. Using time-series satellite radar images, this study constructed a map delineating areas vulnerable to frequent flood damage. The extracted flooded areas were combined with reference land use maps to examine flood damage by land use type. Major landuse types with severe flood damage were agricultural and forested areas. The analysis of the damage conditions, in terms of land use, served as the basis for developing flood damage mitigation policies, in conjunction with land use planning. The policies for flood damage mitigation can be summarized as land use regulations, land use planning, and flood damage mapping. A preventive measure to minimize flood damage of properties, which regulates developing areas with high flooding potential, is highly recommended. Although this study suggested a number of policies for flood damage mitigation, they represent only a small number of possible policies useful for mitigating flood damage and other environmental problems. Based upon the results of this study, it may be concluded that satellite radar imagery has great potential in providing basic data for large-scale environmental problems such as flooding and oil spills. Nevertheless, further examinations should be conducted and the application of satellite radar imagery should be used to examine other environmental problems.