热带海洋学报 ›› 2010, Vol. 29 ›› Issue (1): 104-110.doi: 10.11978/j.issn.1009-5470.2010.01.104

• 海洋地质学 • 上一篇    下一篇

珠江口海域灾害地质因素及其与环境变化的关系

孙杰1, 詹文欢1, 贾建业2, 丘学林1   

  1. 1. 中国科学院边缘海地质重点实验室, 中国科学院南海海洋研究所, 广东 广州 510301;
    2. 广东水利电力职业技术学院, 广东 广州510635
  • 收稿日期:2008-11-27 修回日期:2009-02-10 出版日期:2010-01-15 发布日期:2001-01-08
  • 作者简介:孙杰(1978—), 男, 山东省烟台市人, 助理研究员, 博士, 主要从事海洋地质研究。
  • 基金资助:

    中国科学院边缘海地质重点实验室开放研究基金(MSGL08-24); 中国科学院海洋地质与环境重点实验室开放课题(MGE2008
    KG02); 广东省自然科学基金(07004206); 广东省908专项(GD908-01-06)

Hazardous geology and its relationship with environmental evolution in the Pearl River Estuary

SUN Jie1, ZHAN Wen-huan1, JIA Jian-ye2, QIU Xue-lin1   

  1. 1.CAS Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; 2. Guangdong Technical College of Water Resource and Electric Engineering, Guangzhou 510610, China
  • Received:2008-11-27 Revised:2009-02-10 Online:2010-01-15 Published:2001-01-08

摘要:

珠江口海域地质环境比较复杂, 孕育着多种灾害地质因素。通过收集的浅地层剖面、卫星遥感、钻孔资料及系统的野外调查, 研究了珠江口海域灾害地质类型及其分布, 编制了珠江口灾害地质示意图。珠江口海域灾害地质类型很多, 可划分为新构造灾害地质、侵蚀堆积灾害地质、承压流体塑性体灾害地质、结构不均匀性灾害地质4个类型, 包括活动断层、地震、浅层气、沙波、潮流沙脊、冲蚀槽沟、海岸侵蚀与淤积、陡坎、埋藏古河道、浅埋基岩面等。它们的分布范围很广且密集。新构造运动及晚更新世以来海平面变化, 决定了珠江口海域复杂的海洋灾害地质类型及分布。珠江口众多的灾害地质问题将会对经济发展和海底工程建设安全构成潜在威胁, 应该引起高度重视。

关键词: 灾害地质因素, 分布, 地质环境, 演变, 珠江口

Abstract:

The geological environments in the Pearl River Estuary are comparatively complicated and pregnant with hazardous geology factors. High-resolution seismic data, satellite remote sensing, borehole data and systematic survey have been used to examine marine hazardous geologic types and their distributions in the Pearl River Estuary; hazardous geologic maps of the estuary have been completed. The geological hazards are classified into neotectonic, erosive-deposit, fluid-plastic and heterogeneous hazardous geology types, including active fault, earthquake, coastal erosion, coastal accumulation, sand wave, tidal sand ridge, buried paleochannel, shallow gas, erosion gutter, shallow bedrock, among others. The scale of distribution of hazardous geologic types is large; the types of hazardous geology are complex and distributed in almost the whole area. Geologic environmental evolution including neotectonic movement and sea-level change since late Pleistocene decides the formation and regularity of geologic hazards. More attentions should be given to severe hazardous geologic phenomena that can greatly threaten regional economic development and engineering construction.

Key words:  hazardous geology factors, distribution, geologic environmental, evolution, Pearl River Estuary