[PPS08-05] Greeley et al. (2006) revisited: the size distribution and frequency of dust devils at the Gale crater
Keywords:Mars, dust devil
On the other hand, there may be atmospheric phenomena that change the thickness of the boundary layer and the stability. Stationary and traveling waves in low latitudes may modify the atmospheric conditions regarding dust devil occurrences although amplitudes of the diurnal and seasonal variations are larger than those of such waves. If the atmospheric waves can modify the conditions of dust devil occurrences significantly, we can find the correlation between the phase of the waves around the Spirit rover and dust devils frequency observed by the Spirit/Navcam. However, Greeley et al. (2006; 2010) neither reported the number of dust devils observed on each sol nor listed time stamps of each observed dust devil. The correlation between the atmospheric waves and dust devil frequency cannot be investigated only based on information they showed in their paper. Therefore, we again detect dust devils from images the Spirit took, estimate the diameter of the dust devils and record the time of the occurrences.