A comprehensive query system for earthquake information based on qgis

Abstract

The invention discloses a QGIS-based comprehensive query system of seismic information. The system includes a seismic-information database, a GIS and a display system. According to the comprehensive query system, the seismic information is identified at geographic information locations and latitude and longitude coordinates, by which seismic sources can be visually seen in a map, to assist in thevector map of railway trunk lines, location relationships between selected locations of stations and the existing railway trunk lines can be more clearly seen and analyzed, and impacts of a certain earthquake on sections and the railway trunk lines are visually seen through analyzing a seismic waveform file. According to the comprehensive query system, viewing and analysis of the seismic information can be realized in multiple environments, and storage and viewing of information are more highly efficient and securer. GIS functions in the comprehensive query system are powerful, analysis capability and multiple functions can enable a seismic analyst to easily use a computer to realize browsing of the GIS and data analysis operations, and work efficiency is greatly improved.

Description

technical field [0001] The invention relates to a comprehensive query and display method for seismic information, which performs GIS positioning and data analysis on relevant information such as seismic sources and stations. It belongs to the comprehensive utilization field of earthquake relief and geographic information system. Background technique [0002] Large and small earthquakes occur every day on the earth, most of which are small in magnitude or occur in remote areas such as the seabed and are not perceived by people. However, strong earthquakes that occur in human activity areas often cause damage to human life and property. Huge damage, so the earthquake is one of the main natural disasters on the earth, known as the head of the group of disasters, extremely destructive. [0003] Seismic waves generated by earthquakes can directly cause damage or even collapse of buildings, damage the ground, produce ground cracks, collapse, etc. In mountainous areas, it may also...

AI Technical Summary

Problems solved by technology

[0006] Through the analysis and research of a large number of earthquake data at home and abroad, we found that only a few earthquakes with extremely large intensity levels can cause direct damage to railway foundations, bridges, railway tracks, etc., and affect driving safety.

Although a large number of seismic activities have low intensity and cannot directly damage the railway structure, their strong vibrations will cause major harm to the moving trains, and even cause the trains to overturn and suffer heavy losses.

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