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(corresponding data of the year to be updated) runoff and sediment observation data set of qiaozigou drainage station in the third sub region of Loess Hilly and gully region from 1991 to 2000
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English name
(corresponding data of the year to be updated) runoff and sediment observation data set of qiaozigou drainage station in the third sub region of Loess Hilly and gully region from 1991 to 2000
DOI
10.12072/ncdc.HWTSZhan.db0038.2020
CSTR
CSTR:11738.11.ncdc.HWTSZhan.2021.69
Share type
Offline
Category
Soil and Water Conservation
Datasets description

This data set is the runoff and sediment observation data set of qiaozigou watershed in the third sub region of the Loess Hilly and gully region from 1990 to 1999. The runoff and sediment amount during runoff generation are calculated by water level observation and sediment sampling at runoff station. The data set includes the measured discharge results of Qiaozi Donggou and Qiaozi xigougou calibre flow stations, the extract table of flood hydrological elements, the successive flood test results, the daily average discharge table, the daily average sediment concentration table and the daily average suspended sediment transport rate table.

Base information
collect time 1991/01/01  -  2000/12/31
collect place Qiaozigou watershed, Qinzhou District, Tianshui City, Gansu Province
altitude 1235.0m - 1707.2m
data size 1.7 MB
data format
Coordinate system
Data thumbnail
Data source description

Artificial timing observation

Data processing method

  1. Flow observation: the flow measuring structures of qiaozidonggou and qiaozixigou runoff stations are triangular wide crested weirs. When there is little water, the flow is measured by the volume method with the connecting tube, and the flow is calculated by the buoy method for the flood. In flood, straw is used as a buoy, while wood chips and sorghum poles are used as buoys in normal water. The buoy coefficients are not calibrated, and they are all 0.85. The observation time of runoff station is generally twice at 8:00 and 20:00 every day. In flood period, the observation times are increased according to the water regime, generally 5-10 times a day, and 20-40 times for some large floods.
  2. Sediment concentration observation: sampling by water side one point method. 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.

Data quality description

Manual observation is carried out by professional and technical personnel; four levels of manual verification are carried out in the process of data input, which are tabulation, initial calibration, re calibration and audit, so as to ensure the data quality.

Citations and annotations
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If you need to apply for use, please contact the data contributor "Yellow River water and soil conservation and Tianshui water and soil conservation scientific test station" (Tianshui water and soil conservation scientific test station) LQ15902908809@163.com Tel: 15902908809

For the achievements published in English, please refer to the following specifications： The dataset is provided by National Cryosphere Desert Data Center. (http://www.ncdc.ac.cn).

Data reference
Yellow River Soil and Water Conservation Tianshui Governance Supervision Bureau (Water and Soil Conservation Tianshui Scientific Experimental Station). (corresponding data of the year to be updated) runoff and sediment observation data set of qiaozigou drainage station in the third sub region of Loess Hilly and gully region from 1991 to 2000. National glacial and frozen desert scientific data center(http://www.ncdc.ac.cn/), 2020. DOI: 10.12072/ncdc.HWTSZhan.db0038.2020.
license agreement
Creative Commons License   This work is licensed under a Creative Commons Attribution 4.0 International License.
# title file size
1 桥子沟流域综合说明.docx 53.6 kB
2 桥子东沟
3 桥子西沟
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east 105.73
west 105.71
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contacts:
phone:
0931-4967596
mailbox:
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Contact information
contributors:
Yellow River Soil and Water Conservation Tianshui Governance Supervision Bureau (Water and Soil Conservation Tianshui Scientific Experimental Station)
author:
Liu Xiao
manager:
liuqi

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