다중 이차곡면 방정식을 이용한 중력자료의 지형보정

다국어 초록 (Multilingual Abstract)

The multiquadric terrain equation reproduces topography which is much closer to the real one than the digital terrain model. Also, terrain correction calculated by using the multiquadric terrain model shows a better result than that of digital terrain model. The accuracy of terrain correction depends on the accuracy of terrain data. Therefore, determination of the mean elevation of a terrain compartment by taking simple average of the maximum and minimum terrain height is not recommended. To obtain more accurate mean elevation of a compartment, a smaller scale topographic map such as 1:5,000 map is desirable for reading terrain data. But 1:25,000 map can be used for practical use. The pattern size of 250m×250m compartment is appeared to be suitable for near correction(D-F range), and 5㎞×5㎞ size for far correction. The computer program developed in this research can be used in all cases of surface and subsurface gravity surveys.