Lava Tube Morphometry Data

<strong>Description</strong> The data archived here include specific results from geologic mapping studies of the Martian volcano Alba Mons associated with the publication 'Distribution and Morphology of Lava Tube Systems on the Western Flank of Alba Mons, Mars,' submitted to the JGR/ESS Special Issue on Planetary Caves: Exploring Planetary Caves as Windows into Subsurface Geology, Habitability, and Astrobiology. <br> These results were generated from analyses of imaging and topographic datasets acquired from spacecraft orbiting Mars, and were used to provide descriptions and quantitative characteristics of lava tube systems on the western flank of Alba Mons. Included here are two tables containing data associated with Figure 10 (map of lava tube segments) and Figure 11 and Tables 1 and 2 (associated morphologic and morphometric parameters) of the publication. More details of the study can be found in the publication. <br> <strong>Data Files and Types</strong> Lava_Tube_Segments_Morphometry_A: ascii table, csv Lava_Tube_Segments_Morphometry_B: ascii table, csv <br> <strong>Data Spatial Reference</strong> Mars_2000_(Sphere) WKID: 104971 Authority: Esri Angular Unit: Degree (0.0174532925199433) Prime Meridian: Reference_Meridian (0.0) Datum: Mars_2000_(Sphere) Spheroid: Mars_2000_(Sphere) Semimajor Axis: 3396190.0 Semiminor Axis: 3396190.0 Inverse Flattening: 0.0 <br> <strong>Bounding Box</strong> West: -130.0 deg East: -115.0 deg North: 47.5 deg South: 37.5 deg <br> <strong>Header Fields (Line 1) and Description </strong> <strong>Lava_Tube_Segments_Morphometry_A.csv</strong> ID: Feature ID of lava tube segment location Morphology: Morphology Type Start_Long: Longitude of Line Feature Start Start_Lat: Latitude of Line Feature Start Start_Z: Elevation of Line Feature Start End_Longitude: Longitude of Line Feature End End_Latitude: Latitude of Line Feature End End_Z: Elevation of Line Feature End Center_Longitude: Longitude of Line Feature Midpoint Center_Latitude: Latitude of Line Feature Midpoint Length_km: Length of Line Feature in kilometers <br> <strong>Lava_Tube_Segments_Morphometry_B.csv</strong> ID: Feature ID of lava tube segment location Slope_Deg: Surface slope of line segment, degrees Reg_Slope: Regional slope from 50 km MOLA grid, degrees Reg_Aspect: Regional slope aspect from 50 km MOLA grid, degrees Slope_diff: Difference between line feature and regional slope, degrees Bearing: Orientation of line feature, degrees Bearing_diff: Difference between line feature orientation and aspect of regional slope, degrees Longitude: Longitude of Line Feature Midpoint Latitude: Latitude of Line Feature Midpoint <br> <br>