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本研究基于北黄海及周边海域的多波束测深、浅地层剖面等地球物理数据，构建了北黄海全海域灾害地质分类体系，系统揭示了灾害地质类型、空间分布规律及其形成机制。首先，依据成因将北黄海灾害地质体划分为三类：内动力成因的活动构造类、外动力塑造的海底表层类及浅层埋藏类；其次，阐明了灾害地质空间分布特征及区域风险等级，如山东半岛北部海域属高风险区，主导因素为地震与活动断层；最后，揭示了灾害地质发育的主控因素：晚第四纪海平面波动（MIS 5-MIS 1沉积旋回）是主导表层与埋藏灾害地质形成的关键，而构造活动则主要控制基底不稳定性，导致火山活动、岩浆底辟及浅埋基岩失稳等灾害地质。该成果为北黄海地区的灾害风险评估、涉海工程安全防护及资源勘探开发提供了重要的科学依据。
Abstract：Based on multibeam bathymetry, shallow seismic profile, and other geophysical data from the North Yellow Sea and adjacent areas, a comprehensive classification system for geohazards across the entire North Yellow Sea was established. The types, spatial distribution patterns,and formation mechanisms of geohazards in the study area were. Firstly, geohazard bodies in the North Yellow Sea were categorized into three types according to their genesis: endogenic dynamic factors(active tectonic structures), exogenic dynamic shaping factors(seafloor surface features), and shallow-buried features. Secondly, the spatial distribution characteristics of geohazards and regional risk levels were elucidated.For instance, the northern waters of the Shandong Peninsula were identified as a high-risk area, primarily influenced by earthquakes and active faults. Finally, the dominant controlling factors for geohazard development were identified: Late Quaternary sea-level fluctuations(the MIS 5-MIS 1 sedimentary cycle) were found the key driver for the formation of surficial and shallow-buried geohazards, while tectonic activity may cause the basement instability, leading to geohazards such as volcanic activity, magmatic diapirs, and shallow-buried bedrock disturbance. These findings provide a critical scientific basis for geohazard risk assessment, marine engineering safety protection, and resource exploration and development in the North Yellow Sea.
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基本信息:
DOI：10.16562/j.cnki.0256-1492.2025071501
中图分类号:P694;P736
引用信息:
[1]陈珊珊,王中波,陈晓辉,等.北黄海及周边海域灾害地质特征及形成机制[J].海洋地质与第四纪地质,2025,45(05):44-55.DOI:10.16562/j.cnki.0256-1492.2025071501.
基金信息:
山东省自然科学基金项目“东海陆架及邻域海底流体渗漏系统的识别及形成机制研究”（ZR2022MD085）; 国家自然科学基金项目“东海北部外陆架晚更新世以来两期古三角洲的时空展步特征及物源属性研究”（41706069）; 陕西省科技计划项目“运动平台下二维声呐的图像拼接和目标三维重构技术研究”（2024JC-YBQN-0684）; 中国地质调查局项目（DD20243114,DD20230647,DD20160137,GZH200800501,DD20190819,DD20221720）