Earth surface evolution: a Phanerozoic gridded dataset of Global Plate Model reconstructions

This repository provides access to five reconstruction files as well as the code and the static polygons and rotation files used to generate them. This set of palaeogeographic reconstruction files provide palaeocoordinates for three global grids at H3 resolutions 2, 3, and 4, which have an average cell spacing of ~316 km, ~119 km, and ~45 km. Grids were reconstructed at a temporal resolution of one million years throughout the entire Phanerozoic (540–0 Ma). The reconstruction files are stored as comma-separated-value (CSV) files which can be easily read by almost any spreadsheet program (e.g. Microsoft Excel and Google Sheets) or programming language (e.g. Python, Julia, and R). In addition, R Data Serialization (RDS) files—a common format for saving R objects—are also provided as lighter (and compressed) alternatives to the CSV files. The structure of the reconstruction files follows a wide-form data frame structure to ease indexing. Each file consists of three initial index columns relating to the H3 cell index (i.e. the 'H3 address'), present-day longitude of the cell centroid, and the present-day latitude of the cell centroid. The subsequent columns provide the reconstructed longitudinal and latitudinal coordinate pairs for their respective age of reconstruction in ascending order, indicated by a numerical suffix. Each row contains a unique spatial point on the Earth's continental surface reconstructed through time. NA values within the reconstruction files indicate points which are not defined in deeper time (i.e. either the static polygon does not exist at that time, or it is outside the temporal coverage as defined by the rotation file).
The following five Global Plate Models are provided (abbreviation, temporal coverage, reference):

WR13, 0–550 Ma, (Wright et al., 2013)
MA16, 0–410 Ma, (Matthews et al., 2016)
TC16, 0–540 Ma, (Torsvik and Cocks, 2016)
SC16, 0–1100 Ma, (Scotese, 2016)
ME21, 0–1000 Ma, (Merdith et al., 2021)
In addition, the H3 grids for resolutions 2, 3, and 4 are provided.
For more information, please refer to the article describing the data:
Jones, L.A. and Domeier, M.M. 2023. Earth surface evolution: a Phanerozoic gridded dataset of Global Plate Model reconstructions. (TBC).
For any additional queries, contact: 
Mathew M. Domeier ([e-mail]) or Lewis A . Jones ([e-mail])
If you use these files, please cite: 
Jones, L.A. and Domeier, M.M. 2023. Earth surface evolution: a Phanerozoic gridded dataset of Global Plate Model reconstructions. Zenodo data repository. DOI:10.5281/zenodo.10069222

本仓库提供5份古地理重建文件，以及用于生成这些文件的代码、静态多边形与旋转文件。
这套数据集包含三种H3分辨率（2、3、4）的全球网格的古地理坐标，其平均网格单元间距分别约为316 km、119 km与45 km。
整个显生宙（540–0 Ma）期间，所有网格均以百万年为时间分辨率完成重建。
重建文件以逗号分隔值（comma-separated-value, CSV）格式存储，可被几乎所有电子表格软件（如Microsoft Excel、Google Sheets）或编程语言（如Python、Julia、R）直接读取。此外，还提供R数据序列化（R Data Serialization, RDS）文件——一种常用于保存R对象的轻量化压缩格式，作为CSV文件的替代方案。
重建文件采用宽格式数据框结构以简化索引操作。每份文件的初始三列为索引列，分别为H3单元索引（H3 cell index，即“H3地址”）、网格单元质心的现代经度与现代纬度。后续列以升序排列的数值后缀标注重建年代，依次对应各年代下重建得到的经纬度坐标对。每一行代表地球大陆表面上一个经时空重建得到的唯一空间点。重建文件中的NA值代表对应更深地质年代未定义的空间点（即该时刻不存在对应静态多边形，或超出旋转文件定义的时间覆盖范围）。

以下提供5个全球板块模型（缩写、时间覆盖范围、参考文献）：
WR13，0–550 Ma，（Wright等，2013）
MA16，0–410 Ma，（Matthews等，2016）
TC16，0–540 Ma，（Torsvik与Cocks，2016）
SC16，0–1100 Ma，（Scotese，2016）
ME21，0–1000 Ma，（Merdith等，2021）

此外，还提供分辨率为2、3、4的H3网格。

如需了解更多信息，请参阅介绍该数据集的学术论文：
Jones, L.A. 与 Domeier, M.M. 2023. 《地球表面演化：显生宙全球板块模型重建网格化数据集》（待刊）。

如有其他疑问，请联系：
Mathew M. Domeier（[e-mail]）或 Lewis A. Jones（[e-mail]）

若使用本数据集，请引用以下文献：
Jones, L.A. 与 Domeier, M.M. 2023. 地球表面演化：显生宙全球板块模型重建网格化数据集. Zenodo数据仓库. DOI:10.5281/zenodo.10069222