A great diversity in the eruptive style of ArsiaMons volcano can be identified from THEMIS, MOCand MOLA data. Collectively, these data sets providethe first opportunity to study lava shields within thesummit caldera, kilometer-scale pit craters on theupper flanks, and the entire length of lava flows fromvent to distal flow lobes. As such, a more completepicture o...

Introduction: Evidence suggests that cold and dry conditions have persisted on Mars since the mid-to-late Hesperian period [1-3]. While it is likely that the climate conditions of Mars differed during the earlier Noachian period [e.g. 2], the exact nature of the martian climate during this earliest period of martian history remains unclear. Geological evidence has been interpreted by some previ...

[1] We have used new compositional information on Martian basaltic rocks from the Mars Exploration Rover Spirit and data from new stereo imaging by the High Resolution Stereo Camera (HRSC) on the Mars Express orbiter to constrain an existing analyticalnumerical computer model to assess the potential of Martian lavas to form lava channels by erosion of substrate. The basaltic rocks studied in Gu...

We present new radar-based techniques for efficient identification of surface changes generated by lava and pyroclastic flows, and apply these to the 1996 eruption of Manam Volcano, Papua New Guinea. Polarimetric Land P-band airborne synthetic aperture radar (SAR) data, along with a C-band DEM, were acquired over the volcano on 17 November 1996 during a major eruption sequence. The Lband data a...

Identifying the genes underlying adaptation is a major challenge in evolutionary biology. Here, we describe the molecular changes underlying adaptive coat color variation in a natural population of rock pocket mice, Chaetodipus intermedius. Rock pocket mice are generally light-colored and live on light-colored rocks. However, populations of dark (melanic) mice are found on dark lava, and this c...