Mathematics – Logic
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufm.p51a0341m&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #P51A-0341
Mathematics
Logic
3307 Boundary Layer Processes, 3314 Convective Processes, 3322 Land/Atmosphere Interactions, 5415 Erosion And Weathering, 6225 Mars
Scientific paper
This work continues a long term research program into the fundamental very near-surface processes of dust devil vortices, especially in support of the ASU Vortex Simulator, as well as landed Martian missions such as MER and the Mars Express Beagle 2. Field experiments conducted in southern Nevada chased and directly sampled over 40 vortices with a profiling instrument array that extended down to the desert floor. Pressure, temperature, and horizontal/vertical wind speed and direction sensors reveal a complex microenvironment operating at the base of these thermal vortices. Preliminary analysis indicates that vortex inflow is stratified and fluctuates rapidly in a manner that contributes substantially to soil erosion and upward transport. Our report will characterize vortex dynamics and relate them to observed surface geologic and aerodynamic conditions as determined by complementary in-situ wind tunnel studies, among others.
Balme Matt
Greeley Ronald
Metzger Stephen M.
Ringrose Tim
Towner Martin
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