Seismic source rapid determination method and system based on single rectangular model

Abstract

The invention provides a seismic source rapid determination method and system based on a single rectangular model, seismic data and high-frequency GNSS data are combined to realize rapid determination of a seismic source, and the method comprises the following steps: a strong seismograph and a seismograph collect original motion information of a seismic station, a GNSS receiver collects basic navigation positioning information of a GNSS observation station, and the basic navigation positioning information is sent to a ground computing center; the ground computing center constructs a seismic station characteristic function time sequence, judges whether the seismic station is triggered by an earthquake or not, and accurately picks up the initial movement moment of the seismic station according to the seismic station characteristic function time sequence when the earthquake occurs; the ground computing center determines the epicenter position, and generates GNSS observation station motion information according to the basic navigation positioning information of the GNSS observation station; and the ground computing center estimates the point source magnitude, estimates the initial fault size of the single rectangular model according to the point source magnitude, inverts the parameters of the single rectangular model, and sends earthquake early warning information to an earthquake early warning center.

Description

technical field [0001] The invention relates to the field of earthquake early warning, in particular to a method and system for quickly determining an earthquake source based on a single rectangular model. Background technique [0002] Earthquakes of different scales occur frequently around the world every year, posing a huge threat to life and property safety. Earthquake prediction and prediction is a problem that is difficult to solve in the short term. In this case, earthquake early warning and emergency relief are particularly important. The rapid determination of the length and direction of earthquake focal rupture is of great significance for earthquake early warning, earthquake field prediction, post-earthquake disaster assessment and rapid rescue. Because of the seismographs and strong motion instruments used in the traditional earthquake early warning system, the phenomenon of instrument tilt, rotation and range overrun in the near-field area of ​​large earthquakes...

AI Technical Summary

Problems solved by technology

In order to make up for the unreliable data caused by strong motion instruments and seismographs in the near-field area of ​​major earthquakes due to instrument tilt, rotation, and range overrun in conventional earthquake early warning systems, solve the low universality and low timeliness of existing source inversion strategies In view of this problem, the present invention discloses a method and system for quickly determining the source of an earthquake based on a single rectangular model

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