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Method for quickly estimating earthquake magnitude based on fusion of multiple types of data sources

A data source and magnitude technology, applied in seismology, seismic measurement, seismic signal processing, etc., can solve the problems of false alarms, low magnitude reliability, and low magnitude, so as to reduce false alarm rate and improve accuracy Effect

Active Publication Date: 2018-09-21
山东省地震局
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Problems solved by technology

P d The method is affected by the epicentral distance, and the reliability of the measured magnitude is low for some earthquake events with few epicentral stations.
[0007] (2) For the calculated larger earthquake (M s ≥6.5), both methods will appear magnitude saturation, the calculated magnitude is low, the recognition rate is unstable, and false positives are prone to occur

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  • Method for quickly estimating earthquake magnitude based on fusion of multiple types of data sources
  • Method for quickly estimating earthquake magnitude based on fusion of multiple types of data sources
  • Method for quickly estimating earthquake magnitude based on fusion of multiple types of data sources

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] Such as figure 1 As shown, the present invention provides a method for rapidly estimating magnitude by fusing multiple data sources, comprising the following steps:

[0037] Step 1: Threshold Trigger Judgment

[0038] Firstly, the real-time data streams produced by the seismometric and strong motion stations are used to judge the triggering of earthquake events. After satisfying the spatial concentration of the three triggering stations, ...

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Abstract

The invention discloses a method for quickly estimating earthquake magnitude based on fusion of multiple types of data sources. The method disclosed by the invention has the benefits that the method for quickly determining the earthquake magnitude by the combined use of high-frequency GPS, strong vibration and multiple types of seismic data is proposed aiming at different applicable scope of various early warning earthquake magnitude calculation methods; the problem that when only a single method is used for determining the earthquake magnitude, the misreport is easy to occur as well as the problem that when initial P wave records are used for determining the earthquake magnitude, the earthquake magnitude saturation is easy to occur is solved, the dynamic and continuous determination on the earthquake magnitude is realized, and the magnitude estimate accuracy is improved to a greatest extent; the method can be applied to an earthquake early warning system, thereby effectively reducingthe misreport rate of the system.

Description

technical field [0001] The invention relates to the technical field of earthquake prevention and disaster reduction, in particular to a method for rapidly estimating magnitude by fusing multiple types of data sources. Background technique [0002] my country is one of the earthquake-prone countries in the world. In recent years, strong earthquakes have occurred frequently. The Wenchuan M8.0 earthquake on May 12, 2008, the Yushu M7.1 earthquake on April 14, 2010, and the Lushan M7.0 earthquake on April 20, 2013 The occurrence of the disaster had a huge impact on the local economic and social development, and caused serious losses to people's lives and property. [0003] Today, earthquake prediction has not achieved a major breakthrough, and the earthquake early warning system is one of the new technologies recognized in the world that can effectively mitigate earthquake disasters. The earthquake early warning system uses the principle that the propagation speed of seismic wav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/00G01V1/30
CPCG01V1/307G01V2210/6161G01V2210/63G01V1/01
Inventor 蔡寅刘希强曲保安夏岩尹玉振
Owner 山东省地震局
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