Near-bottom bathymetry and back-scatter data acquired with AUV IDEFX during the AMORGOS-22 cruise

Near-bottom multibeam bathymetry and back-scatter data acquired along the Amorgos and Santorini-Amorgos faults, in the Aegean sea. High-resolution bathymetry data (1 m/pixel) were acquired by the autonomous underwater vehicle (AUV) IdefX, deployed during the AMORGOS-22 cruise (https://doi.org/10.17600/18001479) with the MBES EM2040. The dataset consists of six DEMs as well as fourteen back-scatter mosaics (i.e. two versions for each dives, raw and processed (compention of the antenna diagram)). In addition, a DEM extracted from dive 2 is provided. The bathymetric data were processed with GLOBE, while the back-scatter data were processed with Sonarscope. Renavigation of the vehicule was necessary during processing and is applied to both the bathymetric grids and backscatter mosaics. Files are provided in TIF format, projected in UTM 35 N (WGS 84).

本数据集为采集自爱琴海阿莫戈斯（Amorgos）与圣托里尼-阿莫戈斯断裂带沿线的近底多波束测深与反向散射数据。其中，分辨率为1米/像素的高分辨率测深数据，由搭载多波束测深系统（MBES）EM2040的自主水下航行器（AUV）"IdefX"于AMORGOS-22科考航次期间采集，该航次的DOI链接为https://doi.org/10.17600/18001479。本数据集包含6个数字高程模型（DEM）以及14幅反向散射镶嵌图，即每次下潜对应原始数据与经过天线方向图补偿后的处理版本共两套数据；此外，还提供了从第2次下潜数据中提取的数字高程模型。测深数据采用GLOBE软件进行处理，反向散射数据则通过Sonarscope软件完成处理。数据处理过程中需对航行器进行重新导航，该校正已应用于所有测深网格与反向散射镶嵌图。所有数据文件均采用TIF格式存储，投影坐标系为UTM 35 N（WGS 84）。