HiRISE: High Resolution Imaging Science Experiment http://uahirise.org Image updates from the HiRISE Camera onboard the Mars Reconnaissance Orbiter en-us editor@uahiris.org (Ari) Wed, 22 May 2013 17:30:00 GMT Eastern Valles Marineris Bedrock Stratigraphy and Falling Duneshttp://uahirise.org/PSP_010277_1650As with all dunes, wind regime, sediment supply, topography, and climate are all important factors in where dunes form and persist. Ridges and a Valley with Flow Frontshttp://uahirise.org/ESP_031215_1830In this observation, we see heavily cratered terrain with deposits that record Martian geologic history and stratigraphy.How Did the Mound in Gale Crater Form?http://uahirise.org/ESP_030880_1750Scientists have been wondering about the origin of the central mound in Gale Crater since before Curiosity landed nearby.Ice in a Chlorite-Bearing Escarpment in Northwest Hellashttp://uahirise.org/ESP_027758_1530The image was captured at the beginning of southern spring, at a time period when south-facing escarpments still retain ices deposited during the winter. Spanish Catalog Update http://www.uahirise.org/es/catalogo.php This week's release available in Spanish/Imágenes para esta semana en español. Italian Catalog Update http://www.uahirise.org/it/catalogo.php This week's release available in Spanish/Immagini per questa settimana in italiano. Icelandic Catalog Update http://www.uahirise.org/is/catalog.php This week's release available in Spanish/Immagini per questa settimana in italiano.