本数据集为1991-2000年桥沟流域3个径流站径流、泥沙观测数据。桥沟流域位于陕西省榆林市绥德县，属于裴家茂沟（无定河一级支流）的一级支流。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1991-2000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": "1991-01-01 00:00:00", "ds_acq_end_time": "2000-12-31 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": 394261, "ds_files_count": 5, "ds_format": "xls，doc，pdf", "ds_space_res": null, "ds_time_res": "次", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "9f429a6f-1c1d-4374-b73c-92faced74980.jpg", "ds_thumb_from": 2, "ds_ref_way": "黄河水土保持绥德治理监督局（绥德水土保持科学试验站），1991-2000年黄土丘陵沟壑区第一副区桥沟流域径流、泥沙观测数据集，国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn/)，2020，doi：10.12072/ncdc.HWSDZhan.db0070.2020", "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": null, "quality_level": 3, "publish_time": "2020-12-10 00:57:16", "last_updated": "2020-12-24 15:59:09", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.HWSDZhan.2020.121", "i18n": { "en": { "title": "Observation data set of runoff and sediment in Qiaogou watershed, the first sub region of Loess Hilly and gully region, 1986-1990", "ds_format": "", "ds_source": "Instrument continuous observation manual timing observation
", "ds_quality": "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.
", "ds_ref_way": "", "ds_abstract": "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 1986 to 1990. The runoff and sediment yield are calculated by water level observation and sediment sampling at runoff station. The data set includes the measured discharge results table, flood hydrological elements extraction table, successive flood test results table, daily average discharge table, daily average sediment concentration table and daily average sediment transport rate table of Qiaogou runoff station, Qiaogou yizhigou runoff station and Qiaogou erzhigou runoff station.
", "ds_time_res": "次", "ds_acq_place": "", "ds_space_res": "", "ds_projection": "", "ds_process_way": "Precipitation observation instruments include SM1 ordinary rain gauge with a diameter of 20cm and dsj2 siphon type self recording rain gauge. The SM1 type adopts the 8-hour and 20-hour two-stage system for annual observation. It mainly observes the start and end time of precipitation and makes statistics of precipitation. When the intermittent time of precipitation is more than 15 minutes, it is observed as two times of precipitation before and after the interval. When the intermittent time is less than 15 minutes, it is recorded as one-time precipitation observation. If one-time precipitation crosses 8 hours and 20 hours, it should be measured at 8 hours and 20 hours. Dsj2 type adopts 24 section system for flood season observation. In case of failure of self recording rain gauge, the observation data of ordinary rain gauge is used for supplement.
", "ds_ref_instruction": " " } }, "submit_center_id": "ncdc", "data_level": 0, "recommendation_value": 0, "license_type": "https://creativecommons.org/licenses/by/4.0/", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "belong_to_nieer": false, "ds_topic_tags": [ "径流模数", "径流系数", "输沙率", "水位", "侵蚀模数", "流量", "含沙量", "径流深度", "径流量", "土壤流失量" ], "ds_subject_tags": [ "水文学" ], "ds_class_tags": [], "ds_locus_tags": [ "绥德", "桥沟", "榆林", "陕西省" ], "ds_time_tags": [ 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000 ], "ds_contributors": [ { "true_name": "黄河水土保持绥德治理监督局（绥德水土保持科学试验站）", "email": "hhstbcsdzljdj@163.com", "work_for": "黄河水土保持绥德治理监督局（绥德水土保持科学试验站）", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "雷欣", "email": "hhstbcsdzljdj@163.com", "work_for": "黄河水土保持绥德治理监督局（绥德水土保持科学试验站）", "country": "中国" } ], "ds_managers": [ { "true_name": "郭玉梅", "email": "hhstbcsdzljdj@163.com", "work_for": "黄河水土保持绥德治理监督局（绥德水土保持科学试验站）", "country": "中国" }, { "true_name": "黄河水土保持绥德治理监督局（绥德水土保持科学试验站）", "email": "hhstbcsdzljdj@163.com", "work_for": "黄河水土保持绥德治理监督局（绥德水土保持科学试验站）", "country": "中国" } ], "category": "水土保持" }