Glacial lake disaster monitoring and early warning method based on multi-source information data

Abstract

The invention relates to a glacial lake disaster monitoring and early warning method based on multi-source information data. The glacial lake disaster monitoring and early warning method based on multi-source information data includes the steps: combined with interpretation of satellite remote sensing images at different time periods, seepage characteristics of moraine ridge rock soil, glacier tongue gradient, distance of glaciers and glacier tongues from glacial lakes, displacement of glaciers and moraine ridges, glacial lake surface monitoring, climate and hydrological condition monitoring,establishing a numerical model based on the above multi-source information, normalizing each glacial lake outburst risk indicator, and performing preliminary assessment on the possibility of glacial lake collapse through an intelligent algorithm; and performing glacial lake collapse disaster simulation and flood evolution analysis through numerical calculations for the possible disaster conditions, and issuing early warnings based on the simulation calculation results, so as to effectively organize disaster relief and disaster reduction. Combined with various research methods, such as the remote sensing image and interpretation technology, the hydrology and geological monitoring technology, the intelligent algorithm and the numerical simulation technology, the glacial lake disaster monitoring and early warning method based on multi-source information data, has long monitoring service time, can accurately monitor the glacial lake disaster risk indicators and can accurately carry out early warning of the glacial lake disaster and the other advantages.

Description

technical field [0001] The invention relates to the field of electrical data analysis, in particular to a monitoring and early warning method for ice lake disasters based on multi-source information data. Background technique [0002] Since the middle of the 20th century, most of the glaciers in western my country have been in a state of strong retreat, especially the glaciers in the Himalayas, the glaciers in the mountains of southeastern Tibet and the Hengduan Mountains, and the glaciers in the Kunlun Mountains and Karakorum Mountains. Tibet has a large area of ​​glaciers, permafrost and perennial snow, and the runoff of glacial meltwater reaches 32.5 billion m3, accounting for about 53.6% of the national glacier runoff. According to the statistics interpreted from the remote sensing images of LandSat TM, ETM and CBERS, as of 2006, there were 2,483 glacial lakes of various types in Tibet with an area of ​​0.014 km2 or more, and the total area of ​​glacial lakes was 366.56 ...

AI Technical Summary

Problems solved by technology

However, most of the existing glacial lake disasters focus on theoretical research and numerical simulation methods, but do not analyze the glacial lake disasters based on the research on the evolution trend of glacial lakes under climate change and the real-time monitoring data of risk factors, and issue early warnings in time.

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