Weathering Processes on Martian Craters: Implications on Recurring Slope Lineae and the Location of Liquid Water  

作　　者：Pablo Garcia-Chevesich Eduardo Bendek Roberto Pizarro Rodrigo Valdes-Pineda David Gonzalez Horacio Bown Eduardo Martínez Luis Gonzalez 

机构地区：[1]Department of Hydrology and Atmospheric Sciences & Department of Agricultural and Biosystems Engineering, University of Arizona, Tucson, USA [2]Faculty of Forest Sciences and Nature Conservation, International Hydrology Research Group, University of Chile, Santiago, Chile [3]International Sediment Initiative and International Hydrological Programme, UNESCO, Paris, France [4]Ames Research Center, NASA, Washington DC, USA [5]Technological Center for Environmental Hydrology, University of Talca, Talca, Chile [6]Faculty of Forest Sciences, University of Concepción, Concepción, Chile

出　　处：《Open Journal of Modern Hydrology》2017年第4期245-256,共12页现代水文学期刊（英文）

摘　　要：Recent attention has been put into recurring slope lineae (RSL), after the discovery that water is present in them. It is assumed that RSL are due to flowing water. However, even though that might be the case, the general characteristics of RSL as well as their seasonal and spatial distribution in Mars, and their occurrence within craters, suggest that RSL correspond to the weathering of frozen aquifers, which coincides with slope stability processes occurring in impact craters and scree slopes from Earth. In this study, we associated RSL with similar weathering processes occurring on impact craters and hydrogeological processes occurring on Earth (including ice, water, and wind erosion and natural aquifer recharge processes). We were able to create a conceptual model on how RSL develop, why are they found mostly in mid latitudes around craters, why are they present in more frequency in one side of crates in high latitudes, and why are there more RSL in the Martian southern hemisphere. Considering the whole hydrogeological processes occurring in craters that experience RSL, we were able to predict where large quantities of liquid water are most likely to be present in the red planet.Recent attention has been put into recurring slope lineae (RSL), after the discovery that water is present in them. It is assumed that RSL are due to flowing water. However, even though that might be the case, the general characteristics of RSL as well as their seasonal and spatial distribution in Mars, and their occurrence within craters, suggest that RSL correspond to the weathering of frozen aquifers, which coincides with slope stability processes occurring in impact craters and scree slopes from Earth. In this study, we associated RSL with similar weathering processes occurring on impact craters and hydrogeological processes occurring on Earth (including ice, water, and wind erosion and natural aquifer recharge processes). We were able to create a conceptual model on how RSL develop, why are they found mostly in mid latitudes around craters, why are they present in more frequency in one side of crates in high latitudes, and why are there more RSL in the Martian southern hemisphere. Considering the whole hydrogeological processes occurring in craters that experience RSL, we were able to predict where large quantities of liquid water are most likely to be present in the red planet.

关 键 词：MARS Recurring SLOPE Lineae (RSL) WEATHERING Processes CRATERS GROUNDWATER 

分 类 号：R73[医药卫生—肿瘤]