表生地球化学是研究地球表层系统的交叉学科,与气候、环境、人类活动等密切相关。随着大数据时代的来临,表生地球化学正面临着新的机遇和挑战。为了给深时数字地球(Deep-time Digital Earth,DDE)科学计划的数据平台建设提供借鉴和参考,...表生地球化学是研究地球表层系统的交叉学科,与气候、环境、人类活动等密切相关。随着大数据时代的来临,表生地球化学正面临着新的机遇和挑战。为了给深时数字地球(Deep-time Digital Earth,DDE)科学计划的数据平台建设提供借鉴和参考,文章对现有的表生地球化学领域的数据及其数据库进行了初步调研。结果表明,表生地化数据具有多元化、跨学科的特点,大多数的数据处于缺乏统一标准和非结构化状态;诸如GEOTRACES、PANGAEA等大型数据库具有相对成熟的数据标准和数据管理经验,SISAL数据库在数据结构化的层面上取得了关键成果,都为表生地球化学数据库的进一步建设和完善提供了基本方法和参考经验。文章最后提出表生地球化学大数据建设应以研究目标和需求为导向,组建相应专题科研工作组,集中力量,全面推动学科数字化。展开更多
Chemical analyses of water and soil samples from the region of Bao Tou, and chemical equilibrium calculations indicate a large amount of water-soluble fluorine accumulating in the surface soil, giving rise to ground w...Chemical analyses of water and soil samples from the region of Bao Tou, and chemical equilibrium calculations indicate a large amount of water-soluble fluorine accumulating in the surface soil, giving rise to ground water with high fluorine during the process of soda-salinizatiun. Thermodynamic calculations of ground water from the region of Bao Tou show: △GaCO3>△GC2F2 >△GCaSO4,, leading to the following sequence in respect to fluorine: CaCO3→CaF2→Ca8O4. But during the process of sodasalinization the sequence should be: CaSO4→NaF→ NaCl. Ground water saturated with fluorine is generally related to water-soluble fluorine-rich sediments of the Middle-Pleistonce series, the distribution of which is controlled by new tectonic movement on one hand,and controls the distribution of endemic fluorosis on the other hand.展开更多
文摘表生地球化学是研究地球表层系统的交叉学科,与气候、环境、人类活动等密切相关。随着大数据时代的来临,表生地球化学正面临着新的机遇和挑战。为了给深时数字地球(Deep-time Digital Earth,DDE)科学计划的数据平台建设提供借鉴和参考,文章对现有的表生地球化学领域的数据及其数据库进行了初步调研。结果表明,表生地化数据具有多元化、跨学科的特点,大多数的数据处于缺乏统一标准和非结构化状态;诸如GEOTRACES、PANGAEA等大型数据库具有相对成熟的数据标准和数据管理经验,SISAL数据库在数据结构化的层面上取得了关键成果,都为表生地球化学数据库的进一步建设和完善提供了基本方法和参考经验。文章最后提出表生地球化学大数据建设应以研究目标和需求为导向,组建相应专题科研工作组,集中力量,全面推动学科数字化。
文摘Chemical analyses of water and soil samples from the region of Bao Tou, and chemical equilibrium calculations indicate a large amount of water-soluble fluorine accumulating in the surface soil, giving rise to ground water with high fluorine during the process of soda-salinizatiun. Thermodynamic calculations of ground water from the region of Bao Tou show: △GaCO3>△GC2F2 >△GCaSO4,, leading to the following sequence in respect to fluorine: CaCO3→CaF2→Ca8O4. But during the process of sodasalinization the sequence should be: CaSO4→NaF→ NaCl. Ground water saturated with fluorine is generally related to water-soluble fluorine-rich sediments of the Middle-Pleistonce series, the distribution of which is controlled by new tectonic movement on one hand,and controls the distribution of endemic fluorosis on the other hand.
