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A Method for Acquisition and Analysis of Precursor Data of Large Earthquake Fault Area

A technology of fracture area and data, applied in the field of precursor data acquisition and analysis of fracture area in earthquake monitoring, to achieve the effect of novel data acquisition and analysis method

Active Publication Date: 2016-06-01
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

If a monitoring network is densely deployed in the fault zone, it will be possible to discover the seismogenic process of a large earthquake

Method used

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  • A Method for Acquisition and Analysis of Precursor Data of Large Earthquake Fault Area
  • A Method for Acquisition and Analysis of Precursor Data of Large Earthquake Fault Area
  • A Method for Acquisition and Analysis of Precursor Data of Large Earthquake Fault Area

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Embodiment Construction

[0016] The features and advantages of the present application will be described with reference to the accompanying drawings.

[0017] my country is an earthquake-prone country. The high-intensity area above VII covers 1 / 2 of the country, including 23 provincial capitals and 2 / 3 of the large cities with a population of more than one million; my country currently has 650 million rural population living in earthquake risk areas above VI. Since the 20th century, the number of earthquake deaths in my country has accounted for about 2 / 5 of the global earthquake death toll, and since the second half of the 20th century, the number of earthquake deaths in my country has accounted for about 1 / 2 of the death toll of all natural disasters in my country during the same period.

[0018] In terms of earthquake monitoring, my country's "Digital Seismic Observation Network" project has 40 component borehole strain gauges and more than 60 borehole body strain gauges. During the 5.12 Wenchuan ...

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Abstract

The invention discloses a method for acquiring and analyzing earthquake fracture area omen data, which aims to an imminent quake forecast method of an intensive distribution platform network monitoring earthquake omen signal. The method comprises the steps as follows: on an earthquake fracture band, monitoring points of earthquake omen are intensively distributed at intervals of about 10 km, including magnetic irradiation, ground stress, ground sound, ground temperature and sound transmitting monitoring; one data center is set in one fracture area, real-time abnormal determination of each omen parameter is performed, the abnormal monitoring is triggered on the conditions of abnormity, abnormal asset, and comprehensive asset of multiple omen parameters, and future earthquake is forecasted according to the abnormal phenomenon and history abnormal conditions. The abnormal monitoring comprises recording abnormal initial time and the absolute abnormal value, and calculating abnormally concentrated equivalent energy; the abnormal asset comprises remarkable abnormal area locking, unit abnormal area equivalent energy, and unit abnormal time equivalent energy; the multiple parameter asset comprises determining abnormal affected areas and locking the fracture areas.

Description

technical field [0001] The invention relates to a method for collecting and analyzing precursory data in a fault area in earthquake monitoring. Background technique [0002] As of 2008, my country has completed a new generation of China digital seismic observation system consisting of national digital seismic network, regional digital seismic network, volcano digital seismic network and mobile digital seismic network. The National Digital Seismic Network is an earthquake monitoring network covering the whole country. The station layout adopts the principle of uniform distribution. It consists of 152 ultra-broadband and very wide-band seismic stations, 2 small-aperture seismic arrays, and 1 national earthquake It consists of a network center and a national earthquake network data backup center. Except for some areas of the Qinghai-Tibet Plateau, the distance between national digital seismic stations in most parts of the country has reached about 250 kilometers, and the densi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/00
Inventor 王新安雍珊珊王腾谢峥林科郭朝阳张国新冯晓星葛彬杰
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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