本数据集包含1880—2000年文献记载的巴尔喀什湖年平均水位数据、和1992-2018年来自1972年9月至2017年10月TM遥感卫星分析提取的年平均水位和湖水表面面积数据，共148条数据。
", "ds_source": "文献记录来自中亚哈萨克斯坦、乌兹别克斯坦和吉尔吉斯斯坦公布的数据（网站下载）和直接从中亚购买统计年鉴、相关专业书籍等。遥感分析数据来自对1972年9月至2017年10月TM遥感卫星的分析提取结果。
", "ds_process_way": "文献数据的采集是对数据源中的信息进行中文翻译、数据筛选和整理。\n遥感分析数据是基于1972—2018年间的Landsat影像，采用全域-局部自适应迭代的阈值分割方法提取湖泊面积信息。
", "ds_quality": "文献记录数据整理过程未做改动。遥感分析结果与文献记录数据平均误差0.18%。
", "ds_acq_start_time": "2019-01-01 00:00:00", "ds_acq_end_time": "2020-09-20 00:00:00", "ds_acq_place": "巴尔喀什湖", "ds_acq_lon_east": null, "ds_acq_lat_south": null, "ds_acq_lon_west": null, "ds_acq_lat_north": null, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 15158, "ds_files_count": 1, "ds_format": "xls", "ds_space_res": "无", "ds_time_res": "无", "ds_coordinate": "无", "ds_projection": "无", "ds_thumbnail": "a8cd5360-0b12-4e65-808f-1f7210d42fca.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "a5877b42-96ea-4f13-af7e-246f355413d6", "doi_value": "", "subject_codes": [ "170.55" ], "quality_level": 1, "publish_time": "2025-04-15 12:37:07", "first_publish_time": null, "last_updated": "2025-05-28 16:57:26", "protected": false, "protected_to": null, "lang": "zh", "cstr": "33110.11.ariddc.00360", "license": null, "extra": null, "files_shape": [ { "name": "Lake Balkhash water level dataset, 1880-2018.xlsx", "size": 15158, "is_dir": false } ], "features": null, "data_level": 0, "i18n": { "en": { "title": "1880-2018 Water level of Lake Balkhash in Kazakhstan-area", "ds_abstract": "This dataset includes the annual average water level data of Lake Balkhash recorded in the literature from 1880 to 2000, and the annual average water level and lake surface area data extracted from TM remote sensing satellite analysis from September 1972 to October 2017 from 1992 to 2018. A total of 148 data pieces.
", "ds_source": "The documentary records come from data published by Kazakhstan, Uzbekistan and Kyrgyzstan in Central Asia (downloaded from the website) and direct purchase of statistical yearbooks and related professional books from Central Asia. Remote sensing analysis data comes from analysis and extraction results of TM remote sensing satellites from September 1972 to October 2017.
", "ds_process_way": "The collection of literature data involves the Chinese translation, data screening and sorting of the information in the data source.\nRemote sensing analysis data is based on Landsat images from 1972 to 2018, and a whole-local adaptive iterative threshold segmentation method is used to extract lake area information.
", "ds_quality": "No changes have been made to the document record data collation process. The average error between remote sensing analysis results and literature record data is 0.18%.
", "ds_acq_place": "Balkhash Lake", "ds_format": "xls", "ds_projection": "no", "ds_space_res": "no", "ds_time_res": "no" } }, "license_type": null, "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, "ds_topic_tags": [ "水位", "面积" ], "ds_subject_tags": [ "水文学" ], "ds_class_tags": [], "ds_locus_tags": [ "巴尔喀什湖" ], "ds_time_tags": [ 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 ], "ds_contributors": [ "吉力力·阿不都外力", "罗毅", "黄粤", "刘铁" ], "ds_meta_authors": [ "李锦" ], "ds_managers": [ "刘铁" ], "category": "水文" }