黑河生态水文遥感试验：水文气象观测网数据集（7号点-平川桥径流观测数据-2015）

该数据集包含了2015年1月1日至2016年3月11日的黑河中游径流加密观测中7号点的河流水位和流速观测数据。2014年底传感器出现异常，维修后3月25日调试正常。观测点位于甘肃省张掖市临泽县平川乡黑河桥，河床为砂砾石，断面不稳定。观测点的经纬度是N39.331667°，E 100.099722°，海拔1375米，河道宽度130米。2015年水位观测采用SR50超声波测距仪，采集频率30分钟。数据说明包括：
水位观测，观测频率30分钟，单位（cm）；缺值数据统一采用字符串-6999表示。
水文气象网或站点信息请参考Li et al. (2013)，观测数据处理请参考He et al.(2016)。

This dataset contains in-situ river water level and flow velocity observations collected at Station No.7 during the intensive runoff observation campaign in the middle reaches of the Heihe River, spanning from January 1, 2015 to March 11, 2016. The monitoring sensors malfunctioned by the end of 2014, and were debugged and restored to normal operation on March 25 after repair.

The observation station is located at the Heihe Bridge in Pingchuan Township, Linze County, Zhangye City, Gansu Province. The riverbed is composed of gravel and sand, and the river cross-section is unstable. The geographic coordinates of the station are N39.331667° and E100.099722°, with an altitude of 1375 meters and a river channel width of 130 meters.

In 2015, an SR50 ultrasonic rangefinder was used for water level observations, with a sampling interval of 30 minutes. Detailed information about the dataset is as follows:
1. Water level observations: The observation frequency is 30 minutes, with the unit being centimeter (cm). Missing values are uniformly denoted by the string "-6999".
2. For information on the hydrometeorological network and monitoring stations, please refer to Li et al. (2013). For data processing procedures of the observed data, please refer to He et al. (2016).