초록

­ 독도 북부해역 해역(북위 37도 20분 - 3B도, 동경 131도 - 132도 40분, 18,500km²)에 대한 해저지질도 작성 및 대륙붕 경계확정을 위한 자료획득­ 한국 해저지질도 제 17집(제주 동남해역 약 20,000km², 1/50만) 발간

Abstract ▼

The objectives of the project are to publish the regional marine geologic maps and to understand the tectonic frameworks of Korea''s offshore, and to develop a better understanding of the nature, quantity, distribution and formation of Korea''s offshore mineral resources as well. The survey area IS

The objectives of the project are to publish the regional marine geologic maps and to understand the tectonic frameworks of Korea''s offshore, and to develop a better understanding of the nature, quantity, distribution and formation of Korea''s offshore mineral resources as well. The survey area IS situated off the southern coast of Korea, the NE part of the East China Sea, 131°00 ′ - 132°40′ I in logitude and 37°20 ′ - 38°00′ I in latitude. A geophysical survey of 2,530 line-km consists of water depth sounding by single- and multi-beam echo sounder, 3.5kHz subbottom profiling, digital mr gun seismic profiling and measurement of gravity and magnetic intensity using gradiometer and magmetometer. Based on the onboard seismic interpretation 40 sediment cores of several meters long wereraised by piston corer. The survey vessel, R/V Tamhae 2, was positioned by Differential Global Positioning System (DGPS).Seismic interpretation, magnetic and gravity modelling, sedimentological and geochemical analysis, and age dating were done to understand geological processings and to produce marine geological maps such as bathymetric map, bottom sediment distribution map, isopach map of Recent sediments, total and residual magnetic map and gravity anomaly map. The scientific report, KR-04(C)-04, was published in 2004 and marine geological maps will be published in 2005 by KIGAM. This project was fully supported by MOCIE.