Estimating Grain Sizes of Martian Dune Sand: A Freeware‐Based Methodology With Initial Results

Autor:	D. M. Burr, V. N. H. Nguyen, T. M.‐G. Gibson, T. Chinchkhede
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	Martian sand sizes Aeolian deposits open‐source methodology thermal inertia Astronomy QB1-991 Geology QE1-996.5
Zdroj:	Earth and Space Science, Vol 11, Iss 9, Pp n/a-n/a (2024)
Druh dokumentu:	article
ISSN:	2333-5084
DOI:	10.1029/2024EA003697
Popis:	Abstract Grain sizes of Martian sand dunes are critical sedimentological data on sand provenance and transport pathways. Thermal inertia values are used to characterize the grain sizes of dune sand. Most early characterizations involved single dune fields. Recent work based on global data sets has provided more wide‐spread dune sand locations, though these data sets include the non‐sandy interdune areas. To provide a more accurate grain size characterization, we leverage a global thermal inertia data set, a global dune database and a global imaging mosaic to develop a freeware‐based methodology for deriving grain sizes. This methodology involves delineation of sand‐only areas within dune fields and collection of thermal inertia values from those areas. We consider a unimodal histogram of values with a mode
Databáze:	Directory of Open Access Journals
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