GEOMAGIA50.v3: 1. general structure and modifications to the archeological and volcanic database
GEOMAGIA50.v3: 1. general structure and modifications to the archeological and volcanic database
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DOI：
10.1186/s40623-015-0232-0
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发表时间：
2015-05-12
影响因子：
3
通讯作者：
Constable, Catherine G.
中科院分区：
文献类型：
--
作者：
Brown, Maxwell C.;Donadini, Fabio;Constable, Catherine G.
背景：GEOMAGIA50.v3是一个全面的在线数据库，提供对过去50千米内记录地球磁场的各种材料的已发表的古地磁、岩石磁学和年代学数据的访问。发现：自2006年首次发布以来，该数据库的结构和功能进行了更新，并增加了大量数据。值得注意的修改如下：(1)纳入了来自考古和火山材料的更多强度、方向性和元数据，并改进了放射性碳年代记录；(2)新的数据模型，以适应来自湖泊和海洋沉积物的古地磁、岩石磁和年代学数据；(3)改进了考古地磁/火山查询中的地理约束，允许选择特定地点；(4)在考古地磁/火山查询中更灵活的方法和统计约束；(5)从一系列时变的全球场模型计算全新世地磁场的预测；(6)可搜索的参考表；以及(7)更新的网络界面。这份文件描述了对数据库的一般修改以及古地磁和火山数据库的具体方面。结论：GeOMAGIA50.v3的地磁和火山部分目前包含了1959至2014年间发表的461项研究中的14,645项数据(偏角、倾角和古强度)。我们回顾了用于获得这些数据的古地磁方法，并讨论了这些数据在数据库中的应用。随着遗留数据的增加和新研究的发表，数据库继续扩大。基于Web的界面可在http://geomagia.gfz-potsdam.de上找到
Background: GEOMAGIA50.v3 is a comprehensive online database providing access to published paleomagnetic, rock magnetic, and chronological data from a variety of materials that record Earth's magnetic field over the past 50 ka.Findings: Since its original release in 2006, the structure and function of the database have been updated and a significant number of data have been added. Notable modifications are the following: (1) the inclusion of additional intensity, directional and metadata from archeological and volcanic materials and an improved documentation of radiocarbon dates; (2) a new data model to accommodate paleomagnetic, rock magnetic, and chronological data from lake and marine sediments; (3) a refinement of the geographic constraints in the archeomagnetic/volcanic query allowing selection of particular locations; (4) more flexible methodological and statistical constraints in the archeomagnetic/volcanic query; (5) the calculation of predictions of the Holocene geomagnetic field from a series of time varying global field models; (6) searchable reference lists; and (7) an updated web interface. This paper describes general modifications to the database and specific aspects of the archeomagnetic and volcanic database. The reader is referred to a companion publication for a description of the sediment database.Conclusions: The archeomagnetic and volcanic part of GEOMAGIA50.v3 currently contains 14,645 data (declination, inclination, and paleointensity) from 461 studies published between 1959 and 2014. We review the paleomagnetic methods used to obtain these data and discuss applications of the data within the database. The database continues to expand as legacy data are added and new studies published. The web-based interface can be found at http://geomagia.gfz-potsdam.de