珠江口外潜在强震区海陆地震联测的初步结果

doi:10.11978/j.issn.1009-5470.2012.03.010

Abstract

Abstract: An onshore-offshore seismic experiment is the most effective method to study the deep crustal structure of land-ocean transitional area. In order to study the deep seismogenic structure of potential strong earthquake zone off the Pearl River Estuary, this paper compares the data of onshore-offshore seismic experiments off the Pearl River Estuary in 2004 and 2010, with emphasis placed on analyzing the profile OBS2010-1 located at the land-ocean transitional area off the Dangan Islands. The data-processing of the profile gives high-quality data. We obtained clear shallow-crustal structure from multi-channel seismic data. Various seismic phases were recorded by permanent seismic stations, portable seismic stations, and Ocean Bottom Seismometers. The permanent seismic stations received air-gun signals over a distance of 360 km. All these provide a strong base for the study of deep seismogenic structure of the potential strong earthquake zone for future research.

Key words: onshore-offshore seismic experiment, Pearl River Estuary, potential strong earthquake zone, crustal structure, littoral fault zone

CLC Number:

P738.4

CAO Jing-he, XIA Shao-hong, SUN Jin-long, ZHU Jun-jiang, XU Hui-long. Preliminary results of onshore-offshore seismic experiments in a potential strong earthquake area off the Pearl River Estuary[J].Journal of Tropical Oceanography, 2012, 31(3): 71-78.

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Preliminary results of onshore-offshore seismic experiments in a potential strong earthquake area off the Pearl River Estuary

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