摘要
华南滨海断裂带是一条经历多期次活动的强活动断裂带,它控制着台湾海峡的地震活动和构造活动,也控制着台湾海峡的形成和演化。台湾海峡的滨海断裂带是华南滨海断裂带的一部分,是影响沿海海岸工程建设最大的一条强活动断裂带。简要分析了该断裂带的地质地貌特征和在地球物理剖面上的反映,以及它对台湾海峡地震活动的控制作用。根据台湾海峡的活动断裂、地震活动和深部构造应力分布特点,初步划分出该断裂带在未来100a内的6个潜在震源区,它们分别是A区(7-7.5级)、B区(5.25-6.5级)、C区(6.75-7级)、D区(5.5-6.5级)、E区(6.5-6.75级)和F区(5.5-6.5级)。
The littoral fault belt of South China is an active fault belt having experienced several stages of activities. It controls the tectonic activities as well as the formation and evolvement of the Taiwan Strait. According to the seismic profile, the littoral fault belt of the Taiwan Strait is a part of the littoral fault belt of South China and is a strong active fault belt affecting coast engineering construction. The paper briefly analyzes the geological and geomorphological features and geophysical profile of the fault belt, and discusses the potential seismic focus zone near the belt. According to the distributions of the active faults, seismic activities and deep tectonic stress field, the potential seismic focus zone is divided into 6 regions as follows: region A (M_s=7—7.5), region B (M_s=5.25—6.5), region C (M_s=6.75—7), region D (M_s=5.5—6.5), region E (M_s=(6.5)—6.75), and region F (M_s=5.5—6.5).
出处
《热带海洋学报》
CAS
CSCD
北大核心
2004年第4期19-24,共6页
Journal of Tropical Oceanography
基金
广东省自然科学基金项目(021561)
关键词
华南滨海断裂带
活动性
台湾海峡
南海东北部
littoral fault belt of South China
activity
Taiwan Strait
northeastern South China Sea
