本数据集为2011-2020年桥沟流域3个径流站径流、泥沙观测数据，通过径流站测流断面水位观测，泥沙取样，计算产流时的径流、泥沙量。数据包括桥沟流域站点分布图、径流站测流断面图、洪水水文要素摘录表、逐次洪水测验成果表。径流站情况见《桥沟流域2011-2020年情况说明》。", "ds_source": "
人工定时观测
", "ds_process_way": "1.水位观测：桥沟径流站利用建筑物侧壁上的水尺进行水位测定，非汛期每日8时观测一次，如有降雨，日水位变化缓慢时8时、20时观测两次；日水位变化较大或出现缓慢的峰谷时按2时、8时、14时、20时观测四次。汛期水位变化剧烈时按6分钟的倍数观测。 2.测流方式：平水时采用三角槽测流；水位高于三角槽时，在矩形溢洪道采用浮标法测流，浮标系数采用黄委子洲径流试验站浮标试验结果。 3.泥沙取样及处理：测流断面泥沙采用中泓浮标法取样，取沙次数取决于洪水水位变化的次数，洪峰时为控制含沙量变化而增加取样次数。样品处理采用置换法。
", "ds_quality": "由专业技术人员进行人工观测；数据录入过程中经过四级人工校核，分别是制表、初校、复校、审核，以确保数据质量。
", "ds_acq_start_time": "2011-01-01 00:00:00", "ds_acq_end_time": "2020-12-31 00:00:00", "ds_acq_place": "陕西省榆林市绥德县桥沟流域", "ds_acq_lon_east": 110.29555555555555, "ds_acq_lat_south": 37.49277777777778, "ds_acq_lon_west": 110.29138888888889, "ds_acq_lat_north": 37.50361111111111, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 227950, "ds_files_count": 14, "ds_format": "xls，doc，pdf", "ds_space_res": null, "ds_time_res": "次", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "839dcb08-ed85-4a61-be3d-375f51938dde.jpg", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "f447b2e7-0b54-4601-8d49-0164f2a3fd9a", "ds_serv_man": "敏玉芳", "ds_serv_phone": "09314967596", "ds_serv_mail": "myf@lzb.ac.cn", "doi_value": "", "subject_codes": [], "quality_level": 3, "publish_time": "2022-10-06 16:40:27", "last_updated": "2022-10-06 16:40:27", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.HWSDZhan.2020.87", "i18n": { "en": { "title": "Runoff and sediment observation data set of Qiaogou watershed in the first sub region of Loess Hilly and gully region from 2011 to 2020", "ds_format": "", "ds_source": " <pre><code> <p>Artificial timing observation</p>\n <pre><code> <p>In the process of observation, when there is an abnormal value of the self recording rain gauge, the observation value of the ordinary rain gauge is used for interpolation and verification; in the process of data entry, there are four levels of manual verification, which are tabulation, primary calibration, recalibration and audit, to ensure the data quality. </p>\n <pre><code> <p>This data set is the runoff and sediment observation data of Qiaogou watershed in the first sub region of Loess Hilly and gully region from 2011 to 2020. The runoff and sediment amount during runoff generation are calculated by water level observation at runoff station and sediment sampling. The data set includes the extraction table of flood hydrological elements, the result table of successive flood test, the daily average discharge table, the daily average sediment concentration table and the daily average sediment transport rate table of Qiaogou runoff station, Qiaogou yizhigou runoff station and Qiaogou erzhigou runoff station.\n <pre><code> <p>1. The flow measurement method of Qiaogou runoff station: the triangular groove is used for flow measurement, and the flow calculation is based on the push flow formula.\n