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http://dx.doi.org/10.5916/jkosme.2013.37.2.242

A proposal of marine geophysical exploration techniques for offshore plant installation  

Ha, Ji-Ho (한국해양대학교 에너지자원공학과)
Ko, Hwi-Kyung (한국해양대학교 에너지자원공학과)
Cho, Hyen-Suk (한국해양대학교 에너지자원공학과)
Chung, Woo-Keen (한국해양대학교 에너지자원공학과)
Ahn, Dang (삼성중공업 조선해양연구소)
Shin, Sung-Ryul (한국해양대학교 에너지자원공학과)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.37, no.2, 2013 , pp. 242-251 More about this Journal
Abstract
Recently, while global concern over offshore resources exploration and development is being increased rapidly, offshore plant industry is highlighted as an industry of high added value. Along with this global trend, domestic concern over offshore plant development is being increased as well. In the overseas case, a marine geotechnical survey guideline for confirming characteristics of seabed sediments is available at the time of installation of offshore plant but such guideline is not available in our country. In this study, survey techniques fit for domestic marine environment was applied according to overseas guideline at southern coastal area, Korea. Among the marine geophysical survey techniques being proposed abroad, magnetic survey and seabed photograph were excluded. However, highly reliable data analysis was enabled for marine geophysical survey, which includes in-situ coring investigation and laboratory soil test. In addition, continuous ocean current survey was included to find scour potential due to the current around the offshore plant. Although coring depth is not so deep, we predicted geological structure through the analysis of amplitude features of seismic data. Characteristics of seabed sediments cold be obtained regionally and directly through combined analysis of marine geophysical survey data and coring data.
Keywords
Offshore plant installation; Marine geophysical survey; Seismic data; Coring data; Laboratory soil test;
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