{"id":"efd94ed5-5c4f-438b-9e44-959b65afa896","title":"青藏高原南北现代过程镁同位素和锶同位素数据集（2018年8月至9月）","title_en":"A dataset of Mg and Sr isotopes of modern processes in the north and south of the Tibetan Plateau (August-September 2018)","serial":"","user_limit":"为尊重知识产权、保障数据作者的权益、扩展数据中心的服务、评估数据的应用潜力，请数据使用者在使用数据所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明数据来源和数据作者。对于转载（二次或多次发布）的数据，作者还须注明原始数据来源。","instructions":"数据文件以数据类型、地区和时间为关键词命名，数据以Excel表格格式存储，文件名为“The variations of dissolved Mg and Sr isotopes along the Yangtze River（2018）”，可直接用微软办公软件Excel打开。","description":"本研究所分析的样品来自于2018年8、9月采集的长江全流域河水样品。河水镁同位素和锶同位素都在中国科学院地球环境研究所（IEECAS）多接收电感耦合等离子体质谱仪（Thermo-Fisher Neptune plus MC-ICP-MS）上测试。其中，镁同位素的分析精度（2SD）在0.06‰以内, Sr同位素的分析精度（2SD）大部分在0.000020以内。长江干流的河水镁同位素δ26Mg值整体从上游到下游呈下降趋势，变化范围为上游源头的-0.59‰到下游的-1.36‰，主要支流变化范围为-1.00‰到-1.55‰。锶同位素变化范围从0.709894到0.711446。长江的源头段的河水镁同位素受到了次生碳酸盐矿物沉淀的分馏作用，干流中下游和主要支流受到了碳酸盐风化主导。锶同位素主要受到碳酸盐风化主导，下游有硅酸盐风化的贡献。数据结果可以用于研究青藏高原地区的现代风化过程。","doi":"10.11888/Terre.tpdc.271844","projection":"","language":"zh","share_type":"offline","east":122.32,"west":90.22,"south":24.45,"north":35.9,"scale":null,"crs":null,"filesize":0.1,"share_policy":"c","ts_created":"2021-11-25T17:53:04.163433+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-12-01T16:28:00.188897+08:00","time_description":"","datas_group":2,"time_description_en":"","data_format":null,"project":[11],"specials":[],"cite":null,"review_status":5,"review_invite":[],"review_editor":{"id":42421,"last_login":"2022-04-08T15:16:51.670544+08:00","username":"任慧霞","email":"510727846@qq.com","is_active":true,"is_staff":true,"user_name":"任慧霞"},"data_sources":null,"temporal_resolution":"Yearly","spatial_resolution":"10km - 100km","license":"Attribution 4.0 International (CC BY 4.0)","fund":[694],"subtopics":{"metadata":"efd94ed5-5c4f-438b-9e44-959b65afa896","three_pole":null,"third_pole":null},"username":"颜茂都","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":19}