Computer-generated global map of valley networks on Mars

Computer-generated global map of valley networks on Mars

[1] The presence of valley networks (VN) on Mars suggests that early Mars was warmer and wetter than present. However, detailed geomorphic analyses of individual networks have not led to a consensus regarding their origin. An additional line of evidence can be provided by the global pattern of dissection on Mars, but the currently available global map of VN, compiled from Viking images, is inco...

Automatic mapping of valley networks on Mars

Martian valley networks bear some resemblance to terrestrial drainage systems, but their precise origin remains an active research topic. A limited number of valley networks have been manually mapped from images, but the vast majority remains unmapped because standard drainage mapping algorithms are inapplicable to valleys that are poorly organized and lack spatial integration. In this paper we...

Computer Mapping of Valley Networks on Mars: an Overview of Methods and Challenges

Global Constraints on Rainfall on Ancient Mars : Oceans , Lakes , and Valley Networks

Introduction: The last five decades of Martian exploration have shown evidence for standing surface liquid water in Mars' ancient past [1]. The Vi-king, Mars Global Surveyor (MGS), and Mars Reconnaissance Orbiter (MRO) spacecraft have all observed valley networks in the equatorial and southern tropical regions of Mars [2][3]. As well, recent observations by the MRO HiRISE camera show geo-morpho...

Deltas and valley networks on Mars: implications for a global hydrosphere

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