Interactive 3d models and animations for understanding earth’s coordinate systems

This work presents datasets that can be used for getting a good understanding of an essential geoscience content knowledge that describe earth's coordinate systems. This include coordinate system used for spherical/spheroidal earth with latitudes and longitudes and their subsequent transformations to 2d maps on a variety of media (paper as well as digital) using the process of map projections. The datasets include PDF documents that are embedded with 3d models, animations and mathematical equations. The dataset has separate PDF documents for geographic (for spherical earth) and projected (2d) coordinate systems. Additionally, the data set include individual 3d models that can be used in various digital systems (including apps) and the animations in mp4 format that can be watched on most of the modern digital devices.

本研究提供了可用于深入理解地球坐标系相关核心地球科学专业知识的数据集。此类数据集涵盖用于球面/类球面地球的经纬度坐标系，以及通过地图投影（map projection）将此类坐标系转换为各类介质（纸质及数字介质）上二维地图的相关内容。本数据集包含内嵌三维模型、动画及数学公式的PDF文档，且针对地理（球面地球适用）坐标系与投影（二维）坐标系分别提供了独立的PDF文档。此外，本数据集还包含可在各类数字系统（含应用程序）中使用的独立三维模型，以及可在多数现代数字设备上播放的MP4格式动画文件。