大姚地震前连续形变短期前兆特征

EARTHQUAKE ›› 2005, Vol. 25 ›› Issue (2): 75-82.

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Successive deformation short-term precursor chara- cteristics before the Dayao earthquake

ZHANG Li¹, NIU An-fu², TANG Shu-en², WANG Yong′an¹

1. Earthquake Administration of Yunnan Province, Kunming 650041;
2. China Seismic NetworksCenter, Beijing 100036;
3. Bureau for Precaution against earthquake Disaster of Kunming City, Kunming 650011, China

Received:2004-06-14 Revised:2004-08-01 Online:2005-04-30 Published:2021-11-10

Abstract

Abstract: This paper summarized the short-term anomalous characteristics of simulated and numeralized deformation before the Dayao M_S6.2 earthquake, 2003 in Yunnan Province. Simulated deformation tilt one-way data demonstrated the obvious expediting change and turning change; crustal stress demonstrates step change and big amplitude motion change before the earthquake; gravity has not shown anomaly. Anomalous distribution is 97 km to 346 km from the epicenter. The anomalous station ratio (within distance of 400 km from the epicenter) is 35.7%. Among 9 observation items of numeralized deformation, tilt and crustal stress at Chuxiong station show outstanding change, though it is impacted by rainfall, it still has short-term precursory significance.

Key words: Dayao earthquake, Successive deformation, Simulating and Numeralization, Short-term precursor

CLC Number:

P315.72⁺5

ZHANG Li, NIU An-fu, TANG Shu-en, WANG Yong′an. Successive deformation short-term precursor chara- cteristics before the Dayao earthquake[J]. EARTHQUAKE, 2005, 25(2): 75-82.

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[3]	ZHOU Long-quan, LIU Jie, MA Hong-sheng, ZHOU Jun-jie. Simultaneous Inversion for the 2003 Dayao M6.2 and M6.1 Earthquakes Sequence Locations and Velocity Structure in the Hypocentral Area [J]. EARTHQUAKE, 2009, 29(2): 12-24.
[4]	ZHOU Long-quan, LIU Gui-ping, MA Hong-sheng, HUA Wei. Monitoring crustal media variation by using repeating earthquakes [J]. EARTHQUAKE, 2007, 27(3): 1-9.
[5]	ZHENG Wen-jun, SHAO Yong-xin, TIAN Shan, DONG Xiao-yang. Study on the spatial evolution of the short-term anomaly of Rn in underground water before strong shocks in the tectonic area of North China and the discrim- inative mark of precursors [J]. EARTHQUAKE, 2006, 26(4): 29-36.
[6]	LIU Li-fang, LIU Jie, SU You-jin. Comparison study on source parameters of Yao'an earth- quake sequence and Dayao earthquake sequence [J]. EARTHQUAKE, 2006, 26(1): 10-18.
[7]	WU Cheng-dong, FU Hong, Liu Jie. Shear wave splitting of aftershocks with M=6.2 and 6.1 after Dayao Earthquake in Yunnan 2003 [J]. EARTHQUAKE, 2006, 26(1): 1-9.
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[9]	LIN Hui, ZHANG Ping, TANG Cai, FU Hong. Study on synthetical anomaly characteristics of short-term precursors of strong earthquakes in Yunnan area [J]. EARTHQUAKE, 2004, 24(4): 113-118.
[10]	LIU Yao-wei, NIU An-fu, LU Jun. Study progress of physical analysis and explanation of short-term strong earthquake precursory anomaly characteristics [J]. EARTHQUAKE, 2004, 24(4): 57-65.
[11]	ZHANG Jing, NIU An-fu, GAO Fu-wang, Ji Ping. On the imminent and short-term characteristics of earthquake anomalies obtained from the digital deformation observations [J]. EARTHQUAKE, 2003, 23(1): 70-76.
[12]	TIAN Shan, ZHENG Wen-jun, GUAN Hua-ping, GAO Yu-zhu, CHENG Rui-nian. The relation between annual variation of earth resistivity and meteorologic factors and water table [J]. EARTHQUAKE, 2000, 20(4): 45-49.
[13]	CHEN Li-de. Common features of medium-and short-term precursory anomalies before strong earthquakes [J]. EARTHQUAKE, 2000, 20(2): 7-14.
[14]	Xiao Lizhu, Liu Yongxiu, Shi Hang. APPLICATION OF INHOMOGENEOUS DEGREE OF SEISMICITY TO MEDIUM-AND SHORT-TERM EARTHQUAKE PREDICTION IN GAN SU PROVINCE AND ITS NEIGHBOURING AREA [J]. EARTHQUAKE, 1998, 18(2): 189-194.

Successive deformation short-term precursor chara- cteristics before the Dayao earthquake

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