The co-eruptive elevation change map and post-eruptive elevation change rate map associated with the 2008 eruption of Okmok

Here are the results in a paper entitled "Characterization of the 2008 phreatomagmatic eruption of Okmok from ArcticDEM and InSAR: deposition, erosion, and deformation" submitted to JGR Solid Earth in 2020.

The main revision compared to version 1: This revision does not use one DEM (acquired on 15 May 2016) that was partly contaminated by clouds in the north flank of Ahmanilix. This revision mostly improves the result of the elevation change rate (rate.tif), but it also slightly changes the elevation change data and its corresponding uncertainties.

It includes the 2-m resolution surface elevation change of the 2008 Okmok eruption (Fig. 3a in the paper) and the 2-m resolution post-eruptive elevation change rate map (Fig. 4), as well as the corresponding uncertainties (Fig. S3). It also includes the boundary of the proximal deposit field classified using a minimum elevation increase of 2 m, the boundary of large slope failure, and the shorelines of two lakes (Fig. 3a and S5) at different acquisition times.

The GeoTIFF files can be viewed in free and open-source software QGIS, in Google Earth, or by Matlab using code https://github.com/ihowat/setsm_postprocessing/blob/master/readGeotiff.m. The shapefiles can be viewed in QGIS. Google Earth may not show some of the shapefiles well.

本数据集取自2020年投稿至《JGR Solid Earth》的论文《基于北极DEM（ArcticDEM）与合成孔径雷达干涉测量（InSAR）的奥克莫克（Okmok）2008年岩浆射汽喷发特征：沉积、侵蚀与形变》的相关研究成果。相较于版本1，本次修订的主要调整为：移除了一幅2016年5月15日获取、在Ahmanilix北翼存在部分云污染的数字高程模型（DEM）数据。本次修订主要优化了高程变化速率（rate.tif）的计算结果，同时对高程变化数据及其对应误差范围也进行了小幅修正。本数据集包含2008年奥克莫克喷发的2米分辨率地表高程变化数据（对应论文图3a）、2米分辨率的喷发后高程变化速率图（对应论文图4），以及对应的误差范围数据（对应论文补充材料图S3）。此外，数据集还涵盖以最小高程升高2米为阈值划分的近源沉积场边界、大型滑坡边界，以及不同获取时刻的两处湖泊岸线数据（对应论文图3a与补充材料图S5）。GeoTIFF格式文件可通过免费开源软件QGIS、Google Earth，或使用Matlab配合代码https://github.com/ihowat/setsm_postprocessing/blob/master/readGeotiff.m进行查看。Shapefile格式文件可在QGIS中查看，但Google Earth可能无法完整显示部分Shapefile文件。