Identifying Submarine Engineering Geologic Hazards in a Potential Gas Hydrate Target Area on the Southern Continental Margin of the South China Sea
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Published:2022-12-16
Issue:12
Volume:10
Page:2008
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ISSN:2077-1312
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Container-title:Journal of Marine Science and Engineering
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language:en
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Short-container-title:JMSE
Author:
Xu Zhenqiang,
Li Yang,
Yan WeiORCID,
Lv Yaoyao,
Zhang Guoqing,
Lu Dongyu,
Zhu Zuofei
Abstract
The southern continental margin-slope area of the South China Sea is a complex passive continental margin with diverse tectonic structures and movements. This area is rich in gas hydrate resources and is also an area with a high incidence of potential geological hazards. Identifying and understanding the potential submarine geological hazards in this area is very important for disaster prevention and management during the future exploration and development of marine resources. In this paper, five types of potentially hazardous geological bodies are identified in the research area through high-precision two-dimensional seismic processing and interpretation, including submarine mounds, pockmarks, mass transport deposits, submarine collapses and faults. At the same time, the seismic reflection characteristics and the changes in its morphology and surrounding strata are described. In addition to the causes of geological hazards in this region and their influence on exploration and development, the research prospects of geological hazards in this region are also suggested. Special tectonic and sedimentary conditions, fluid activities and hydrate decomposition may be the conditions for geological hazards in this region, which pose a significant threat to the exploration and development of seabed resources and marine engineering construction in this region. Not only does our conclusion provide useful data for the development and utilization of gas hydrate, but it also presents theoretical suggestions for reducing geological hazards in the development process.
Funder
Guangzhou Science and Technology Project
Project of Sanya Yazhou Bay Science and Technology City
Hainan Research Institute of China Engineering Science and Technology Development Strategy
Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory
Geological Investigation Programs of China Geological Survey
Subject
Ocean Engineering,Water Science and Technology,Civil and Structural Engineering
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