This data set is the total surface runoff of hulugou drainage basin controlled by the hydrological section at the outlet of Qilian station on January 1, 2012 and December 1, 2012 (ls45a rotating cup type current meter produced by Chongqing Huazheng Hydrological Instrument Co., Ltd. is used for measurement). 1. Data overview: this data set is the total surface runoff of hulugou drainage basin controlled by the hydrological section of hulugou drainage basin at Qilian station on January 1, 2012 and December 1, 2012. /2. Data content: / at 08:00, 14:00 and 20:00 every day, the flow rate and water level change of the outlet hydrological section of hulugou River Basin shall be regularly observed (the flow rate shall be measured by ls45a rotating cup type current meter produced by Chongqing Huazheng Hydrological Instrument Company, and the water level change shall be monitored in real time by hobo pressure type water level meter), the water level flow relationship shall be established, and the outlet flow of the river basin shall be calculated. /3. Time and space range: / geographic coordinate: longitude: 99 ° 53 ˊ E; latitude: 38 ° 16 ˊ n; altitude: 2962.5m. /Hydrological section flow: the section flow refers to the water flow through a certain section in unit time, usually expressed in Q, and the unit is cubic meter / second.
(1) The evaporation capacity is measured by 20 special measuring cup at 20:00 every day; generally, the special measuring cup is used to measure the fresh water 20 mm (the original volume) and poured into the device at 20:00 the previous day, and the water volume (the margin) in the re measuring device 24 hours later, that is, at 20:00 the same day, the reduced volume is the evaporation capacity. That is: evaporation = original amount - allowance. If there is precipitation between 20:00 of the previous day and 20:00 of the current day, the calculation formula is: evaporation = original amount + precipitation - allowance.
(2) The precipitation is generally observed in two-stage system, i.e. once at 8:00 and once at 20:00 every day. In rainy season, the number of observation sections is increased, and when the rainfall is large, additional measurement is required. The daily rainfall is defined by 8:00 a.m. of each day, and the precipitation from 8:00 a.m. to 8:00 a.m. of the next day is regarded as the precipitation of the day. In case of rainfall, use 20 special measuring cup to measure. When it snows, only use the outer cylinder as the snow bearing apparatus, and then use the electronic balance (Shenyang Longteng es30k-12 model electronic balance, the minimum sensitivity is 0.2g) to weigh and measure.
Automatic acquisition
The data quality is high, and the data is basically not missing. The data measured by ls45a rotating cup flowmeter is calculated and analyzed. The results show that the data is authentic and can be further analyzed based on this data.
This work is licensed under
CC BY 4.0 (Creative Commons Attribution 4.0 International License).
CSTR:11738.11.ncdc.nieer.2020.1152
10.12072/ncdc.nieer.db3325.2023
