This dataset is the runoff and sediment observation data of the Gully Caliber Flow Station in the Lv'ergou Basin from 2021 to 2024. The observation section of Lv'ergou is a natural trapezoidal section; The flow observation adopts the buoy method to measure the flow velocity, and the flow velocity area method to calculate the flow rate; Sediment sampling and flow measurement are carried out simultaneously, with the same number of sampling and flow measurement times. Sand samples are taken using the water edge one point method, and sediment concentration is measured using the displacement method.
The data includes: measured flow results table, excerpt table of flood hydrological elements, observation results table of successive flood precipitation, test results table of successive floods, daily average flow rate table, daily average sediment concentration table, and daily average suspended sediment transport rate table.
CSTR:11738.11.ncdc.hwtszhan.db2703.2023
10.12072/ncdc.hwtszhan.db2703.2023
<p>Manual timing observation.
Rainfall observed by rain gauge; Artificial observation of flow yield in the catchment basin; Artificial sand sampling and replacement method are used to calculate sediment concentration and then calculate sediment yield; The vegetation coverage is measured by the visual estimation method, and the canopy closure is measured by the needle method.
<p>According to the provisions of "Specification for Water and Soil Conservation Test" (SD239) and "Specification for Water and Soil Conservation Test" (SL419), professional technical personnel shall observe, sort out and compile the data.
Observation data shall be measured, calculated, sorted and analyzed according to the requirements of "four follow-up", and errors and unreasonable records of observation shall be timely handled and corrected, and notes shall be made.
During the compilation and entry of observation data, it is manually checked at four levels, including tabulation, initial calibration, recheck and review. The data compilation is carried out in strict accordance with the relevant observation and compilation specifications and procedures, and in accordance with the process of first calibration, second calibration, review, recheck and review to ensure the quality of data results.
This work is licensed under
CC BY 4.0 (Creative Commons Attribution 4.0 International License).
