A Big Earth Data Platform for Three Poles

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Terrestrial Surface2

Human-Nature Relationship1

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1.Flood level simulation data of typical dam break in the middle section of Himalaya Mountains (2021)

During the thematic implementation period (2019-2021), the data set collected sediment samples of typical dam break flood in the middle of the Himalaya mountains through the field, including sample number, longitude and latitude of sampling points and other field data. Through sample data processing, testing and analysis, the relevant parameters of high-energy flood scale in Yarlung Zangbo River Basin, such as water depth, flow velocity and so on, changing with time, were obtained. The simulation results can provide reference for the analysis of flood dynamic process in corresponding basins, and preliminarily reveal that the high-energy ancient flood in Yarlung Zangbo provides a direct erosion power source for the "tectonic tumor" model of the Grand Canyon, which may lead to the change of the Indian ocean current and may cause disastrous damage to the ancient humans in the lower Ganges plain.

LIU Weiming

TPDC

doi: 10.11888/Terre.tpdc.272448 618 192 Open Access 2022-05-13

2.Flood risk assessment data in Himalayas (2016)

This data includes: 30m mountain flood comprehensive risk data, 30m mountain flood risk data, 30m mountain flood disaster bearing body data and 30m mountain flood vulnerability distribution data in the Himalayas. Based on the results of national investigation and evaluation of mountain flood disasters, the distribution of comprehensive risk indicators of mountain flood disasters in the study area, the distribution of mountain flood risk indicators in each administrative village, the distribution of mountain flood disaster bearing body indicators and the distribution of mountain flood vulnerability indicators are obtained, forming the comprehensive risk distribution data of mountain flood disasters in the Himalayas. This data is helpful to analyze the spatial variation characteristics and distribution law of mountain flood disaster. The zoning of mountain flood disaster risk plays a guiding role in the flood control management and deployment of flood control emergency departments.

WANG Zhonggen