Fatiando a Terra Data: Sierra Negra volcano, Ecuador - Topography
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This is a topography point cloud of the 2018 lava flows of the Sierra Negra volcano, located on the Galápagos islands, Ecuador. The data are generated using structure from motion (SFM) and shows nice topographic features and different roughness of the lava flows. Good to show examples of calculating slope and other terrain properties from the point cloud or gridded data. <strong>Note:</strong> This is a processed and formatted version of the source dataset below. It's meant for use in documentation and tutorials of the Fatiando a Terra project. Please <strong>cite the original authors</strong> when using this dataset. <strong>Changes made: </strong>Data were cropped to smaller region to align with previously published studies of the data and make file sizes under 10 Mb. Coordinates converted from UTM to WGS84 geographic. Export to a compressed CSV for easier loading with Pandas. <strong>Source: </strong>Carr, B. (2020). Sierra Negra Volcano (TIR Flight 3): Galápagos, Ecuador, October 22 2018. Distributed by OpenTopography. https://doi.org/10.5069/G957196P <strong>Additional reference:</strong> Carr, B. B., Lev, E., Sawi, T., Bennett, K. A., Edwards, C. S., Soule, S. A., et al. (2021). Mapping and classification of volcanic deposits using multi-sensor unoccupied aerial systems. Remote Sensing of Environment. https://doi.org/10.1016/j.rse.2021.112581 <strong>Source license: </strong>CC-BY <strong>Repository: </strong>https://github.com/fatiando-data/sierra-negra-topography
本数据集为厄瓜多尔加拉帕戈斯群岛内格拉火山（Sierra Negra Volcano）2018年熔岩流的地形点云数据。该数据集通过运动恢复结构（Structure from Motion, SFM）技术生成，清晰呈现了熔岩流的典型地形特征与差异化粗糙度，可用于演示如何从点云或网格化数据中计算坡度及其他地形属性。 <strong>备注：</strong>本数据集为下述源数据集的经处理与格式化版本，专为Fatiando a Terra项目的文档与教程开发。使用本数据集时，请<strong>引用原作者文献</strong>。 <strong>修改说明：</strong>为适配该数据集已发表的相关研究，将数据裁剪至更小区域，并将文件大小控制在10 MB以内；将坐标从通用横轴墨卡托（UTM）投影坐标系转换为世界大地测量系统1984（WGS84）地理坐标系；导出为压缩CSV格式，以便于通过Pandas库快速加载。 <strong>源数据集：</strong>Carr, B.（2020）. 内格拉火山（TIR飞行3次）：厄瓜多尔加拉帕戈斯，2018年10月22日. 由OpenTopography发布. https://doi.org/10.5069/G957196P <strong>补充参考文献：</strong>Carr, B. B., Lev, E., Sawi, T., Bennett, K. A., Edwards, C. S., Soule, S. A. 等（2021）. 基于多传感器无人航空系统的火山沉积测绘与分类. 环境遥感（Remote Sensing of Environment）. https://doi.org/10.1016/j.rse.2021.112581 <strong>源数据集许可协议：</strong>CC-BY <strong>存储仓库：</strong>https://github.com/fatiando-data/sierra-negra-topography
