Sand dune movement in the Victoria Valley, Antarctica

Bourke, M. C.; Ewing, R. C.; Finnegan, D. C.; McGowan, Hamish A.

doi:10.1016/j.geomorph.2009.02.028

Cited by 79 publications

(43 citation statements)

References 43 publications

(86 reference statements)

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“…1c and 3; Table 2). For comparison, data for dunes at Victoria Valley, Antarctica (Bourke et al, 2009) and the Salton Sea, California (Pelletier, 2013) are provided in Fig. 3, and demonstrate that most terrestrial barchan sand fluxes are an order of magnitude higher than those on Mars.…”

Section: Regional Aeolian Activitymentioning

confidence: 99%

Aeolian dune sediment flux heterogeneity in Meridiani Planum, Mars

et al. 2017

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It is now known unambiguously that wind-driven bedform activity is occurring on the surface of Mars today, including early detections of active sand dunes in Meridiani Planum's Endeavour crater. Many of these reports are only based on a few sets of observations of relatively isolated bedforms and lack regional context. Here, we investigate aeolian activity across central Meridiani Planum and test the hypothesis that dune sites surrounding Endeavour crater are also active and part of region-wide sediment migration driven by northwesterly winds. All 13 dune fields investigated clearly showed evidence for activity and the majority exhibited dune migration (average rates of 0.6 m/Earth-year). Observations indicate substantial geographic and temporal heterogeneity of dune crest fluxes across the area and per site. Locations with multiple time steps indicate dune sand fluxes can vary by a factor of five, providing evidence for short periods of rapid migration followed by near-stagnation. In contrast, measurements at other sites are nearly identical, indicating that some dunes are in a steady-state as they migrate. The observed sediment transport direction was consistent with a regional northeasterly-to-northwesterly wind regime, revealing more variations than were appreciated from earlier, more localized studies. Craters containing shallow, degraded, flat-floored interiors tended to have dunes with high sediment fluxes/activity, whereas local kilometer-scale topographic obstructions (e.g., central peaks, yardangs) were found to be inversely correlated with dune mobility. Finally, the previous, more limited detections of dune activity in Endeavour crater have been shown to be representative of a broader, region-wide pattern of dune motion.

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Section: Regional Aeolian Activitymentioning

confidence: 99%

Aeolian dune sediment flux heterogeneity in Meridiani Planum, Mars

et al. 2017

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“…The factor of five between the two fluxes suggests that the saltation flux is about four times the reptation flux (from Bridges et al, 2012b; acknowledgement to Nature Publishing Group). References: Bodélé (Vermeesch and Drake, 2008); ripples to dunes (Greeley and Iversen, 1985); Peru (Gay, 1999); Kelso (Lancaster, 1994); Victoria Valley (Bourke et al, 2009);Mauritania (Ould Ahmedou et al, 2007); Salton Sea (Long and Sharp, 1964); Saudi Arabia (Fryberger et al, 1984).…”

Section: Comparisons With Earthmentioning

confidence: 99%

Bedform migration on Mars: Current results and future plans

et al. 2013

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“…Advances in computer hardware and software throughout the 1990s facilitated a shift in study to the reflectance characteristics of dune surfaces (Paisley et al, 1991;Lancaster et al, 1992;Tsoar and Karnieli, 1996;Walden and White, 1997;White et al, 1997;Blumberg, 1998;Pease et al, 1999) and innovative approaches for quantifying historical changes in dune activity (Anthonsen et al, 1996;Brown and Arbogast, 1999). In the last decade, additional progress has been made in the quantitative analysis of dune morphodynamics Vermeesch and Drake, 2008;Bourke et al, 2009;Necsoiu et al, 2009) and dune field pattern analysis (Kocurek and Ewing, 2005;Ewing et al, 2006;Bishop, 2007;Wilkins and Ford, 2007;Mason et al, 2008;Bishop, 2010;Ewing and Kocurek, 2010a,b;Hugenholtz and Barchyn, 2010;Kocurek et al, 2010).…”

Section: Introductionmentioning

confidence: 99%