Hydrogen and oxygen stable isotope data set of groundwater and surface water in Naqu basin, the upper reaches of Nujiang River (2020-2021)

From September 3 to September 9, 2020, groundwater and surface water were collected in the upper reaches of Nujiang River Basin (i.e. Naqu basin in Nujiang River source area), and the samples were immediately put into 100 ml high density polyethylene (HDPE) bottles. 18O and D are analyzed and tested by liquid water isotope analyzer (picarro l2140-i, USA), and the stable isotope ratio is expressed by the thousand difference relative to Vienna "standard average seawater" (VSMOW). δ 18O and δ The analysis error of D is ± 0.1 ‰ and ± 1 ‰ respectively. It provides basic data support for subsequent analysis of groundwater source analysis in Naqu basin.

0 2022-06-01

Flood simulation data of historical barrier lake breaking in Qinghai Tibet scientific research area

The data includes three typical cases: Flood Simulation of Yigong Landslide in 2000, Baige landslide in the upper reaches of Jinsha River in 2018, and scenario simulation of wokaqu River Basin crossed by Sichuan Tibet railway. The data is the water level and elevation data flowing along the downstream after the barrier lake burst. The TIF format with spatial projection coordinate information is horizontal Mercator projection. For a typical case, the dynamic adaptive grid two-dimensional flood process model newflood is used for simulation analysis. The input data of the model are terrain data, driving data, etc. SRTM 30 meter resolution DEM data is used for topographic data. Because of the large gradient of wokaqu, the water area of barrier lake is relatively small, so DEM is resampled before simulation. The simulation results can provide a reference for the analysis of flood dynamic process in the corresponding basin.

0 2021-09-03

Water system data of Sichuan Tibet tranffic corridor (2015)

The data set contains the data of rivers and lakes in Sichuan Tibet transportation corridor. The river is divided into 1-4 grades. The rivers are numbered and geocoded. The data can be used not only as the basic elements of regional geographic base map, but also as the basic conditions of hydrological regional division. The data source is not the national 1:1 million basic geographic data, covering the national land area and the main islands including Taiwan Island, Hainan Island, Diaoyu Island, South China Sea Islands and their adjacent waters, with a total of 77 1:1 million maps. The overall current situation of the data is 2015. 2000 national geodetic coordinate system, 1985 National elevation datum, longitude and latitude coordinates are used.

0 2021-07-19

Basic meteorological data of Yigong (2018-2019)

This data is the data of the automatic weather station (AWS, Campbell company) set up in Yigong Zangbu basin by the Southeast Tibet alpine environment comprehensive observation and research station of Chinese Academy of Sciences in 2018. The geographic coordinates are 30.1741 n, 94.9334 e, and the altitude is 2282m. The underlying surface is grassland. The data include daily arithmetic mean data of air temperature (℃), relative humidity (%), wind speed (M / s), water vapor pressure (kPa) and air pressure (MB) and daily accumulated value of precipitation. The original data is an average value recorded in 10 minutes. The temperature and humidity are measured by hmp155a temperature and humidity probe. The rainfall instrument is tb4, the atmospheric pressure sensor is ptb210, and the wind speed sensor is 05103. These probes are 2 m above the ground. Data quality: the quality of the original data is better, less missing. The data station is a meteorological station in the lower altitude of the Qinghai Tibet Plateau, which will be updated from time to time in the future. It can be used by researchers studying climate, hydrology, glaciers, etc.

0 2021-01-27