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이창복,Lee, Tchang Bok 한국산림과학회 1970 한국산림과학회지 Vol.10 No.1
한라산에 자라는 구상나무는 4개의 품종으로 구성되었다. 이 중에서 푸른 구상나무와 붉은 구상나무는 학계에 새로 보고하는 것이기에 그의 원기재(原記載)와 더불어 발표한다. 검 구상나무는 지리산에서 발견된바 있으나 한라산에서는 이번이 처음이다. 목련나무의 대목(大木)도 여기에서 처음발견 되었다. Abies koreansa Wilson grows at the upper part of Mts. Halla, Chiri, Mudung, Kaji and Dokyu. It was at first collected by Father U. Faurie on the May of 1907 from the Mt. Halla, Quelpaert. Cone colour of this species varies from green to black purple and the typical colour of it is violet purple. A form of black purple was named by Hatushima in 1934. Green and reddish brown or reddish purple colours of this species were discovered recently at the Mt. Halla. All these forms can be identified as the following. for. koreana - Abies koreana Wilson in Journ. Arn. Arb. 1, 188(1920) ; Mori, En. 27(1922) ; Uyeki, Timb. Tr. 117(1926) et Woody Pl. 5(1940) ; Chung et al, Comm. Nam. 12(1937) ; Handb. Kor. Manch. For. 71(1939) ; Kawamoto, III. For. P1. 16(1940) ; T. Lee, Arb. Kor. 12(1947) et Billiogr. Woody P1. 233(1966) ; Nakai, Synopt. 23(1952)-A. nephrolepis sensu Nakai, Rep. Veg. Chirisan 23, no. 27(1915) et Rep. Veg. Quelpaert Isl. 13, no. 142 (1915), non Max. (1866) Strobili violaceo-purpurei, bracteis viridibus juvenilibus vel stramineis matureis. Mt. Halla ( Lee, no. 970527K. ) for. chlorocarpa, forma nova ; Strobili et bracteae viridi sed rubescent in apice juvenili inflerescentiae. Mt. Halla ( Lee, no. 970527C. ) for. rubrocarpa, forma nova ; Strobili et bracteae rubro-purpurei vel rubro-fusui Mt. Halla ( Lee, no. 970527R. ) for nigrocarpa Hatushima, Rep. Exp. For. Kyushu U. 40(1934) ; T. Lee, Arb. Kor. 12(1947) et Bibliogr. Woody P1,233(1966). Strobili et bracteae nigro-purpurei. Mt. Halla (Lee, no. 970527N. )
포항 로란-C (9930M) 신호를 이용한 ASF 해상측정
이창복,이종구,김영재,황상욱,이상정,양성훈,Lee, Chang-Bok,Lee, Jong-Koo,Kim, Young-Jae,Hwang, Sang-Wook,Lee, Sang-Jeong,Yang, Sung-Hoon 한국항해항만학회 2011 한국항해항만학회지 Vol. No.
Loran(LOang RAnge Navigation) 신호를 이용한 측위 시에 정확도에 가장 큰 영향을 미치는 오차요소는 TOA(Time of Arrival) 측정에서의 ASF(Additional Secondary Factor)이다. 따라서 공항접근이나 항만 접안 등의 측위 정확도를 만족시키려면 먼저 정확한 ASF측정이 선행되어야 하는데, 본 연구에서는 해상에서 ASF를 측정하는 기법을 연구하였다. 그 측정방법으로 포항 Loran-C 주국(9930M)에서 송신하는 로란 신호와 로란 수신기의 기준신호를 세슘원자시계를 기준으로 측정함으로써 해상에서의 ASF를 측정하였고 영일만 해상의 12 곳의 측정지점을 3 km 간격으로 설정하여 측정하였다. 해상측정에서 정확도를 높이기 위해서 전기장 안테나와 자기장 안테나를 동시에 사용하였으며 정확한 위치측정을 위해서 DGPS(Differential GPS)수신기를 이용하였다. 이런 방법을 이용하여 해상에서 ASF를 측정함으로써 ASF 예측값과 비교한 결과를 얻었다. A significant factor limiting the ranging accuracy of Loran (Long Range Navigation) signal is the additional secondary factor (ASF) in the time of arrival (TOA) measurements. Precise ASF values are essential if Loran deliver the high absolute accuracies demanded for aircraft approach, maritime harbour entrance. We measured the absolute propagation delay between Pohang Loran signal and Loran receiver output signal by comparing with Cesium atomic clock. In this study we measured ASFs between Pohang 9930M station and the 12 measurement points in the Yeongil Bay by using the measurement technique of absolute time delay. The measurement points were spaced at interval of 3 km by 3 km. An E-field antenna and an H-field antenna were used to improve the accuracy of ASF measurements and a DGPS (Differential GPS) receiver was used for accurate positions. We have gotten the result that the measured ASFs were compared with the predicted ASFs through this measurement technique.
Distribution and properties of intertidal Surface Sediments of Kyeonggi Bay, West Coast of Korea
이창복,유홍룡,박경수,LEE, CHANG-BOK,YOO, HONG-RHYONG,PARK, KYUNG-SOO The Korean Society of Oceanography 1992 韓國海洋學會誌 Vol.27 No.4
Kyeonggi Bay, a macrotidal coastal embayment in the Yellow Sea coast of central korea, is fringed by vastly developed tidal flats. About 400 surface sediment samples were collected from the intertidal and subtidal zones of Kyeonggi Bay for a study of the sediment distribution pattern and the surface sediment characteristics of this environment. The kyeonggi Bay surface sediment becomes progressively finer in the shoreward direction, from offshore sand to shoreward silty sand and sandy silt. This shoreward-fining trend is repeated again on the tidal flat and, as a consequence, a grain-size break occurs near the low-water line which separates the intertidal area from the subtidal one. The intertidal and subtidal sediments differ from each other in textural characteristics such as mean grain size and skewness and this can be interpreted to result from differences in hydraulic energy and morphology between the two environments. The mineral and chemical compositions of the Kyeonggi Bay sediments are largely controlled by the sediment grain size. Smectite was nearly absent in the clay mineral assemblage of Kyeonggi Bay sediment. The contents of Co, Cu and Ni were high in the Banweol tidal flat, which suggests a continuous process of accumulation of these metals. the intertidal environment appears to respond rapidly to artificial coastal modifications, the effects of which should be taken into consideration when planning a dam construction or coastal reclamation.
한국 동남해역 대륙붕과 대륙사면 표면퇴적물의 분포와 특성
이창복,박용안,최진용,김기범,Lee, Chang-Bok,Park, Yong Ahn,Choi, Jin-Yong,Kim, Gi-Beom 한국해양학회 1989 韓國海洋學會誌 Vol.24 No.1
A total of 139 surface sediment samples, collected from the continental shelf and slope off the southeastern coast of Korea, were analyzed in order to understand their grain-size, mineral composition and organic carbon content. Based on the grain-size characteristics, five surface sedimentary facies were distinguished: sand, clay, mud, sand-mud mixed, and sand-clay mixed facies. The sand facies appears to be composed mostly of relict sand. For mud, most of which seem to be of recent origin, two different sources were suggested, based principally on their areal distribution pattern and the local hydrographic conditions. Heavy mineral composition of the fine-sand size fraction allowed us to distinguish different sand populations from the study area. On the whole, the Hupo Bank sediments showed a high content of garnet, while the sediments from the northern part of the continental shelf were characterized by a relatively high content of metamorphic minerals (kyanite, sillimanite, andalusite, staurolite). Among clay minerals, the most abundant was illite, with chlorite, kaolinite and smectite following in decreasing order. Organic carbon contents in the sediments of the study area were generally high and showed an average value of 1.94%. The sediment grain-size exerted a strong influence on the organic carbon content. The highest organic carbon content, on the other hand, was found in the continental slope sediments.