Earthquake short-term and temporary prediction method based on high-order magnetic anomaly derivative

Abstract

The invention discloses an earthquake short-term and impending prediction method based on a high-order magnetic anomaly derivative. The method comprises the following steps: selecting a geomagnetic F component as an earthquake short-term and impending prediction data source; fitting the geomagnetic F component to obtain a high-order polynomial; deriving the high-order polynomial to obtain a high-order magnetic anomaly derivative; and earthquake short-term and temporary prediction is carried out by using a high-order magnetic anomaly derivative in combination with the geomagnetic field. The method has the advantages that the earthquake prediction precision is improved, and damage caused by earthquakes is reduced as much as possible.

Description

technical field [0001] The invention relates to the field of earthquake prediction, in particular to an earthquake short-term and imminent prediction method based on high-order magnetic anomaly derivatives. Background technique [0002] Earthquake prediction is an important scientific issue directly related to the safety of people's lives and properties. Although there is currently no way to prevent earthquakes from occurring, accurate prediction of earthquakes allows sufficient time to take emergency measures to minimize losses. After decades of exploration, scholars at home and abroad have discovered several kinds of precursory information related to earthquakes. Among them, geomagnetism is an important method for earthquake precursory observation. Through experimental and theoretical research, the distribution and variation of the Earth's magnetic field when an earthquake is approaching have been discovered. , and more importantly, the spatial and temporal properties of ...

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Problems solved by technology

But there are still some problems: First, these methods are all related to the geomagnetic Z component, but the Z component data is more obviously affected by the magnetic storm, which reduces the reliability of anomaly information; second, the prediction period selected by the above methods is relatively long (about 90 days ), there is no advantage in short-term earthquake prediction; most importantly, the above method has extremely high requirements for the location of the earthquake and the quality of the obtained data, which undoubtedly increases the difficulty of earthquake prediction

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