Abstract
In 1605, a magnitude of 7.5 grade earthquake was occurred in the northeast of Hainan island, which caused a large area of land subsidence into sea. Previous studies have shown that the seismogenic fault of this earthquake is the Maniao-Puqian fault. About this fault, there has been a lack of in-depth research on the fault activity, the controlled subsidence process and the state of underground structure in this area since the late Cenozoic. To investigate the latest active age and the specific location distribution of the Maniao-Puqian fault, and the influence of its normal fault on the subsidence of Dongzhaigang area, detailed investigation work has been done on this fault area, through the near-surface seismic reflection method. This work can provide important technical support for the construction of Jiangdong New district of Haikou City.
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