Linear dune orientation in Antarctica
Linear snow dunes are eolian bedforms with a wide range of sizes (10-10³m long; 0.1-1m high) which are similar to those found in sand deserts and on other planets. This dataset provides the orientation of hectometer linear (>30m-1km) snow dunes in Antarctica with Sentinel-2 and Landsat-8 images (respectively 10m and 15m resolution) at 25km resolution. The dataset also includes the elongating and bed-instability mode orientations. They are obtained using the theory developed for sand dunes by Courrech et al. 2014, DOI:10.1130/G35657.1. This theory shows that for the same wind regime, two different dune orientation (bed-instability and elongating) can exist depending on the sediment availability. The elongating and bed-instability mode orientations derived from ERA-5 reanalysis at ERA-5 Reanalysis resolution (0.25°x0.25°)
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