Abstract:Widespread valley networks (VNs) on Mars and other evidence point to an
early warm and wet climate. However, ongoing debates still exist about
VN’s formation processes and associated climatic conditions. The power
law relationship between basin length and area (Hack’s Law) can be
diagnostic of different fluvial processes related to climatic
conditions. Past studies of Hack’s Law on Mars at local sites have
produced inconclusive results. Here we used a parameter-free method to
delineate watersheds globally on … Show more
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