Journal
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
Volume 123, Issue 12, Pages 3388-3391Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2018JF004824
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- National Natural Science Foundation of China [11750410687]
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Martin and Kok (2018a, ) measured two distinct aeolian saltation transport thresholds: a larger threshold below which continuous saltation transport becomes intermittent and a smaller threshold below which intermittent saltation transport ceases. In the spirit of Bagnold, they interpreted the former threshold as the fluid threshold, associated with transport initiation, and the latter threshold as the impact threshold, associated with transport cessation. Here I describe and support an alternative interpretation of these two thresholds as two distinct cessation thresholds associated with splash entrainment and, respectively, with compensating energy losses of rebounding particles. This interpretation was recently proposed by Pahtz and Duran (2018a, ). To resolve this controversy, further field studies are needed.
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