COSI-Corr Analysis of Nili Patera Dunes

A collection of analyses focusing on ripple motion on several dunes within the Nili Patera dune field on Mars. See the paper Hood et al., 2021 (Under Review) for greater details on the generation of data. HiRISE images (not included) were compared using the COSI-Corr software (see: Leprince , et al., 2007. , IEEE Transactions on Geoscience and Remote Sensing, 45, 1529-1558.) and ripple motion was determined from these comparisons. The folder "CosiCorrResults" contains these results as TIF images and the file FluxMapInfo includes details on which HiRISE images were used to make each flux map and when these images were taken in the martian year. Several sites were selected, in which the surface ripple patterns were mapped (see NiliDunesShapefiles.gdb/LeeWakePatternsA(B,C)). Transects were selected (NiliDunesShapefiles.gdb/LeeWakeA(B,C)Points_Patterns, MultiDuneATransectsPoints_Patterns) for analysis of ripple migration rate in comparison with ripple patterns. These analyses are detailed in the .xlsx files LeeWakeA(B,C)Points_Patterns.xlsx and LeeWakeAPoints_Patterns_Extended.xlsx In addition, 2-D ripples were traced (NiliDunesShapefiles.gdb/TwoDRippleLines(points)) and local wind directions were determiend based on their orientation and the shape of the underlying slope. The Rasters DuneHeightDEM and DTEEC_017762_1890_018039_1890_A01 were used to determine the shape of the slope.

本数据集为聚焦火星尼利帕特拉沙丘场（Nili Patera dune field）内多座沙丘沙波纹运动的分析合集。有关数据生成的更多细节，请参阅Hood等人2021年（待刊）的相关论文。研究使用COSI-Corr软件（详见Leprince等人2007年发表于《IEEE Geoscience and Remote Sensing Transactions》的论文，第45卷，第1529-1558页）对未包含在本数据集中的高分辨率成像科学实验（High Resolution Imaging Science Experiment，HiRISE）影像进行配准比对，并通过此类比对得到沙波纹的运动信息。‘CosiCorrResults’文件夹以标签图像文件格式（Tagged Image File Format，TIF）存储了上述分析结果；FluxMapInfo文件则详细记录了制作每幅通量图所使用的HiRISE影像，以及这些影像对应的火星年拍摄时间。研究选取了多个点位，对地表沙波纹形态进行了制图（详见NiliDunesShapefiles.gdb/LeeWakePatternsA(B,C)）。同时选取了若干断面（对应路径为NiliDunesShapefiles.gdb/LeeWakeA(B,C)Points_Patterns、MultiDuneATransectsPoints_Patterns），用于对比分析沙波纹迁移速率与沙波纹形态的关联。上述分析的详细结果存储于LeeWakeA(B,C)Points_Patterns.xlsx与LeeWakeAPoints_Patterns_Extended.xlsx这两个电子表格文件中。此外，研究还对二维沙波纹进行了追踪（对应路径为NiliDunesShapefiles.gdb/TwoDRippleLines(points)），并基于其走向与下伏坡度形态确定了局地风向。本次分析使用了DuneHeightDEM与DTEEC_017762_1890_018039_1890_A01两个栅格数据来确定坡度形态。