TY  - Data
T1  - Observation data set of runoff stations at the gully mouth of the third sub-region of the Loess Hills and Gullies area from 1954 to 1958
A1  - None
DO  - 10.12072/ncdc.HWTSZhan.db0016.2020
PY  - 2022
DA  - 2022-08-16
PB  - National Cryosphere Desert Data Center
AB  - <p>This data set is the observation data of the flow station of daliushugou watershed in the third sub region of Loess Hilly and gully region from 1954 to 1958. Including sediment observation and precipitation observation data. There are two kinds of rain gauge used in precipitation observation, self recording rain gauge and ordinary rain gauge. There are two types of self recording rain gauge: one is imitated Su Ν - 1 self recording meter; the other is dsj2 siphon self recording meter made by Tianjin Ocean instrument factory. The ordinary rain gauge is divided into two types according to the size of the rain bearing caliber, i.e. the standard rain tube with the diameter of 20 cm and the simple rain tube with the diameter of 11.3 cm. According to the general rainfall, the distance between two pipes is 2m. In addition to observing according to the specified time interval, each station should also record the beginning and ending time of precipitation.The flow measuring structure of daliushugou is a triangular wide crested weir. The water level discharge relationship calibrated and corrected by the measured points is used to deduce the flow data according to the water level.The sediment concentration was measured by one point method at the water edge. The number of sampling is basically the same as that of current measurement. Sometimes, the sampling frequency is increased appropriately to control the change of sediment concentration. The filtration method is usually used for sand sample treatment.It includes daily precipitation observation results table, precipitation extraction table, maximum precipitation table of each period (1), hydrological elements extraction table of runoff station, and successive flood test results table of runoff station.
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/80f66f71-1743-439c-8691-1576d4dbf5ae
ER  -