The Second Tibetan Plateau Scientific Expedition (STEP) program

Brief Introduction: Second Tibetan Plateau Scientific Expedition Program

Number of Datasets: 51

  • Water quality dataset of Jiangcuo Lake (2017)

    Water quality dataset of Jiangcuo Lake (2017)

    This is the water quality data of the vertical profile of the observation point in Jiangcuo Lake. There are two observation points. It is observed on July 10, 2017. The data is stored as an excel file.

    2019-11-18 1004 14 View Details

  • Sounding observation dataset of  Ali Station (2017)

    Sounding observation dataset of Ali Station (2017)

    This is the sounding observation data set measured by the sounding instrument. It is released by Ali Station, Institute of Tibetan Plateau Research, Chinese Academy of Sciences. The observation time is separately at 12:00, 16:00, 20:00 September 2, 2017, at 16:00, 20:00 September 3, 2017, at 8:00, 12:00, 16:00, 20:00, September 4,2017, at 0:00, 4 :00, 8:00, 12:00, 16:00, 20 :00 September 5, 2017, at 0:00, 4 :00, 8:00, September 6,2017. The original data accuracy is as follows. The data accurate to the integer position are logarithmic pressure, relative humidity, altitude, horizontal wind direction, azimuth, and elevation. The data accurate to one decimal place are temperature, air pressure, dew-point temperature, horizontal wind speed, and longitude. And the data accurate to two decimal places are meridional wind velocity, zonal wind velocity, vapor-to-liquid ratio and latitude. Quality control includes eliminating the missing data and the empty data. The data is stored as an excel file.

    2019-11-18 1061 5 View Details

  • Groundwater level observation data of Selincuo Lake (2017)

    Groundwater level observation data of Selincuo Lake (2017)

    This is the groundwater level observation data set of Selincuo Lake. It can be used in Climatology, Environmental Change, Hydrologic Process in cold regions and other disciplinary areas. The data is observed from June 20, 2017 to August 18, 2017. It is measured by automatic water gauge and a piece of data is recorded every 60 minutes. The data includes the water pressure and water temperature of the groundwater level observation point on the west bank of Selincuo Lake. The original data is precise, with the pressure accurate to 0.001kP and the water temperature 0.001℃. The original data forms a continuous time series after quality control. And the daily mean index data is obtained through calculation. The data is stored as an excel file.

    2020-05-29 2128 4 View Details

  • Bathymetric data of Mapam Yumco Lake (2017)

    Bathymetric data of Mapam Yumco Lake (2017)

    This data set is the measurement of the depth of Mapam Yumco Lake during the River and Lake Source Investigation in 2017. It can be used to map lake isobath, to estimate the water quantities in lakes and to study water balance of the basin. The data observed time is from September 5, 2017 to September 7, 2017. It was measured by the Lowrance HDS-5 sonar depth finder. The original measured data contains a lot of invalid depth data, which has all been eliminated in the post-selecting process. The selected measuring line is reasonable, and the data covers various depth gradients. The data is stored as an excel file.

    2019-11-18 1688 6 View Details

  • Water quality dataset of Saibucuo lake (2017)

    Water quality dataset of Saibucuo lake (2017)

    This is the water quality data of the vertical profile of the observation point in Saibucuo Lake. The data is observed on June 30, 2017. The data is stored as an excel file.

    2019-11-18 1510 10 View Details

  • Bathymetric data of Co Ngoin Lake (2017)

    Bathymetric data of Co Ngoin Lake (2017)

    This data set comprises the depth measurements of Co Ngoin Lake during the River and Lake Source Investigation from June to July in 2017. The measurements were obtained on June 24, 2017 using a Lowrance HDS-5 sonar depth finder. The original data are made into the isobath map processed by the Surfer 13 software using the Kriging method. The original measured data contain numerous invalid depth data, all of which has been eliminated in the postselection process. The selected measurement line is reasonable, and the data cover various depth gradients.

    2019-11-18 1689 9 View Details

  • Precipitation observation data on Taerma Township (2016-2017)

    Precipitation observation data on Taerma Township (2016-2017)

    This is the precipitation observation data of the observation point in Taerma Township. It can be used in Glaciology, Climatology, Environmental Change, Hydrologic Process in Cold Regions and other disciplinary areas. The data is observed from September 15, 2016 to August 17, 2017. It is measured by automatic rain gauge and a piece of data is recorded every 60 minutes. The original data forms a continuous time series after quality control, and the daily mean index data is obtained through calculation. The original data meets the accuracy requirements of China Meteorological Administration (CMA) and the World Meteorological Organization (WMO) for meteorological observation. Quality control includes eliminating the systematic error caused by the missing point data and sensor failure. The data is stored as an excel file.

    2019-11-18 881 4 View Details

  • Core XRF scan data of Selincuo Lake (2017)

    Core XRF scan data of Selincuo Lake (2017)

    This is the core XRF scan data of Selincuo Lake in 2017. The main parameters include magnetic susceptibility and the abundance of each mineral element.

    2019-11-18 848 1 View Details

  • Water quality multi-parameter dataset of Laangcuo Lake (2017)

    Water quality multi-parameter dataset of Laangcuo Lake (2017)

    This is the water quality multi-parameter data set of Laangcuo Lake during the River and Lake Source Investigation in 2017. It can be used to acquire basic physical and chemical indices of lakes. And it can prepare for the following modern observation studies of lakes. The data is observed on September 8, 2017. It is measured by the YSI EXO2 multi-parameter water quality instrument. Instrument calibration is made before each measurement based on the altitude of the lake and the local pressure. The measuring interval is 0.25 s. To ensure the data is continuously acquired, the instrument is slowly released. The original data includes data measured above the water surface, which is exposed to the air, and it has all been eliminated in the post processing. The data is stored as an excel file.

    2019-11-18 1348 13 View Details

  • Hydrogen and oxygen isotope data of lakes from rivers and lakes (2017)

    Hydrogen and oxygen isotope data of lakes from rivers and lakes (2017)

    This data set is the hydrogen and oxygen isotope ratio data of water samples collected in the Selincuo, Gayringco, and Co Ngoin Lake during the Water Source Study in 2017. The water sample collection time is from June 2017 to July 2017. It can be used in Lake Water Cycle, Lake Environmental Changes, Study of Isotopic Geochemistry and other disciplinary areas.

    2019-11-18 1987 3 View Details

  • Bathymetric data of Laangcuo Lake (2017)

    Bathymetric data of Laangcuo Lake (2017)

    This data set is the measurement of the depth of Laangcuo Lake during the River and Lake Source Investigation in 2017. It can be used to map lake isobath, to estimate the water quantities in lakes and to study water balance of the basin. It was measured by the Lowrance HDS-5 sonar depth finder. The original measured data contains a lot of invalid depth data, which has all been eliminated in the post-selecting process. The selected measuring line is reasonable, and the data covers various depth gradients. The data is stored as an excel file.

    2019-11-18 1383 6 View Details