Color and Morphology of Lava Flows on Io

摘要: Abstract Analyses of color and morphologic changes in Voyager images lava flows on Io were conducted to extend previous flow studies additional volcanoes preparation for comparison Galileo data. Blue orange filter Atar, Daedalus, Ra Paterae examined identify systematic downflow decreases blue/orange reflectivity suggested earlier as diagnostic cooled sulfur flows. the morphology 21 at these volcanoes, with analysis Agni, Masaaw, Mbali, Shoshu, Talos Paterae. A total 66 up 245 km length mapped consistent rheologic expected occur Although are observed, trends not consistent, even same edifice. Individual exhibit a statistically significant increase ratio, decrease or lack progressive variation. Color have similar magnitudes across flow, ranges observed from volcano volcano, suggesting that processes controlling ratios edifices. In addition, using widening branching an indicator low viscosity exhibited by cooling high temperatures, do behavior simple sulfur.