DOI: 10.5281/zenodo.7341461
title: Mutidisciplinary analysis of the Nippur Sulcus region on Ganymede

description: Description of this data set


The file named: "Epigeus ROI Geology.zip" is a ZIP archive containing the shapefiles of the Nippur Sulcus region for which the geological context is described. Such binary files can be easily opened with both commercial (eg ArcGIS) and free (eg QGIS) GIS software. The symbology compatible with old and new versions of ArcGIS is also included.


The file named: "Figure_5.dat" includes the processed data related to the maps shown respectively in panels a, b and c of Figure 5. These bidimensional maps are stored as a single-precision floating-point, little-endian binary stream of bytes, ordered according to the Band Sequential (BSQ) image encoding. This file can be easily opened with the commercial ENVI software, and is accompanied by a ASCII header file with same filename and suffix ".hdr". Such header file include details that are needed to properly open and read the ".dat" file without the ENVI software and regardless of the programming language being used.


The file named: "Figure_6.dat" includes the processed data related to the color composite map shown in Figure 6. This bidimensional map is stored as an 8-bit unsigned integer, little-endian binary stream of bytes ranging in value from 0 to 255, ordered according to the Band Interleaved by Pixel (BIP) image encoding. This file can be easily opened with the commercial ENVI software, and is accompanied by a ASCII header file with same filename and suffix ".hdr". Such header file include details that are needed to properly open and read the ".dat" file without the ENVI software and regardless of the programming language being used.


The files named: "Figure_7_ascii.txt" is as ASCII file containing the spectral profiles shown in Figure 7, resulting from the processing of spectroscopic data of Ganymede coming from the Galileo/NIMS mosaic g1g009ci.qub, calibrated in units of radiance factor I/F. The first column represents the NIMS set of wavelengths expressed in microns (µm), while the other four columns from left to right are respectively the spectral profiles of unit c3, unit c2, unit ssgN, and unit dtr, after normalization of I/F at 0.8 µm.


The file named: "shape_Nippur_Sulcus.zip" is a ZIP archive including the shape files for the grooves mapped in the Nippur Sulcus region. Such binary files can be easily opened with both commercial (eg ArcGIS) and free (eg QGIS) GIS software.


The file named: "Figures_8+9_Nippur_grooves_length" is an ASCII file specifying the length in km of the 198 grooves mapped in the Nippur Sulcus region, used both to display the frequency histogram (Figure 9) and for the computation of the cumulative length distribution (Figure 10).


The file named: "2400i_DEM_radius_equi_prep_sh_rad_coord.dat" includes the synthetic topography (DEM) of the Nippur Sulcus region derived from the 2400r high resolution SSI optical image after equirectangular projection. Latitude and longitude values of each pixel in the projected image are also provided. These bidimensional maps are stored as a single-precision floating-point, little-endian binary stream of bytes, ordered according to the Band Sequential (BSQ) image encoding. This file can be easily opened with the commercial ENVI software, and is accompanied by a ASCII header file with same filename and suffix ".hdr". Such header file include details that are needed to properly open and read the ".dat" file without the ENVI software and regardless of the programming language being used.


The file named: "simulated_radargrams.zip" is a ZIP archive including the four ASCII files named: "radargram_3_MHz_full_topography.txt", "radargram_3_MHz_rescaled_topography.txt", "radargram_1_MHz_full_topography.txt", and "radargram_1_MHz_rescaled_topography.txt. These are the radargrams represented respectively in panels a, b, c and d of Figure 14. Each file is an ASCII table consisting of 1200 lines and 200 columns, in which each column represents a simulated echo, and each line a sample in a given echo. Comma separated values represent echo power expressed in dB and normalized to the power of an echo from a perfectly flat surface. Echo samples are 0.33 microsecond apart, while echoes are spaced about 720 m along the ground track of the spacecraft.