Mathematics – Logic
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufm.p21a0201e&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #P21A-0201
Mathematics
Logic
5415 Erosion And Weathering, 5460 Physical Properties Of Materials, 5470 Surface Materials And Properties, 5494 Instruments And Techniques, 6225 Mars
Scientific paper
During the traverses of the Mars Exploration Rovers Spirit and Opportunity over their respective landing sites, telemetry data were collected from the rover inertial measurement unit (IMU) and suspension system at 2-8 Hz. Joint angles in the rover's rocker-bogie suspension system, rover attitude, and rover reported position were used to calculate x-y-z coordinates of each of the six rover wheels. These data were used to create mm-scale topographic profiles along selected rover traverses. Terrain at Meridiani Planum is remarkably flat, consistent with predictions from orbital data. For example, the 140.9 m long sol 82 traverse shows a variation of 40.3 cm over the total traverse with a height standard deviation of only 3.2 cm over the first 55 m. In contrast, profiles from the Gusev crater landing site are rougher and characteristic of a surface with abundant rocks and hollows. The sol 45 and 50 traverses show the profile of Laguna Hollow, a ~20 m wide and half meter deep crater. At both landing sites, cm scale periodicity is evident in some segments of the traverse, suggesting the wavelength and amplitude of aeolian bedforms is being sensed and recorded by the rover wheels. Data are being analyzed to compute surface roughness statistics (RMS height, RMS deviation, and Hurst exponent) and evaluate azimuthal dependency of roughness. These statistics, when compared to those of analog terrestrial terrains, provide insight into the geomorphological processes shaping the martian surface in Gusev Crater and at Meridiani Planum. Further, along with stereo imaging from Pancam and Navcam, examination of topographic profiles allows ground truthing over multiple length scales terrain roughness estimates derived from radar scattering and MOLA pulse width.
Arvidson Ray E.
Ehlmann Bethany L.
Seelos Frank P.
Snider Nathaniel O.
No associations
LandOfFree
Terrain Roughness from MER Traverse Profiles at Gusev Crater and Meridiani Planum does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Terrain Roughness from MER Traverse Profiles at Gusev Crater and Meridiani Planum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Terrain Roughness from MER Traverse Profiles at Gusev Crater and Meridiani Planum will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1647009