南美西海岸(智利)地震科学研究回顾及其对地震监测预报的启示

Abstract

Abstract: The Chilean subduction is one of the highest seismic activity zone in the world, which has been attacked by three large earthquake of M_W>8 since 2010. Based on related studies on seismic geology, historical earthquake, kinematic characterizes, etc., some interesting phenomenon that related to earthquake prediction and the relative research and cognition progress are summarized in this paper. ① Due to the well recorded historic earthquake and the comprehensive research on modern geodesy data-based interseismic fault locking, seismic gap and the high slip deficit locking zone have dominated several large earthquake in the recent years. ② Some seismogenic related precursors are found before the 2010 Maule M_W8.8 and the 2014 Iquique M_W8.1 earthquake. Different with the nesting of the two kinds of Mogi seismic gap before 2010 Maule M_W8.8 earthquake, continuously decreasing of b-value, clustering of pre-shocks, suddenly changes of GPS transient signal, etc., were sprung up before the main shock of the 2014 Iquique M_W8.1 earthquake. ③ The spatial distribution of coseismic slip and interseismic locking reveals the diversity of fault frictional properties. ④ Many cognitional debate on seismogenic physical mechanism and its complexity are still ongoing between different scientists and different methods. ⑤ After the combination of literature investigation and our daily work,some preliminary understanding and thinking are also discussed in this paper.

Key words: The Chilean subduction, Earthquake Study, Earthquake Prediction and Monitoring

CLC Number:

P315.7

SHI Fu-qiang, SHAO Zhi-gang, ZHU Lin, ZHANG Zhu-qi, SHAO Hui-cheng. Earthquake Science on the Western Coast of South American (Chile)and Implications for Earthquake Prediction: An Overview[J]. EARTHQUAKE, 2019, 39(1): 155-170.

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Earthquake Science on the Western Coast of South American (Chile)and Implications for Earthquake Prediction: An Overview

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