[l] The SHARAD instrument on the Mars Reconnaissance Orbiter detects subsurface interfaces beneath lava flow fields northwest of Ascraeus Mons. The interfaces occur in two locations; a northern flow that originates south of Alba Patera, and a southern flow that originates at the rift zone between Ascraeus and Pavonis Montes. The northern flow has permittivity values, estimated from the time del...

Introduction: The Vallis Schröteri exists on the Aristarchus Plateau (305-313 °E, 22-30 °N) which is a topographic high surrounded by basaltic maria. The rille appears a singular sinuous rille as meandering primary rille including a more meandering inner rille. Typical sinuous rilles are 20 to 40 km in length and less than 1 km in width [1], however, the primary rille of Vallis Schröteri has be...

Abstract The effusion rate of lava is one the most important eruption parameters, as it closely related to migration process magma underground and on surface, such changes in flow direction or formation new effusing vents. Establishment a continuous rapid estimation method has been an issue volcano research well disaster prevention planning. For effusive eruptions low-viscosity lava, we examine...

Distinguishing between lava types and facies using remote sensing data is important for interpreting the emplacement history of flow-fields on Earth other planetary bodies. Lava typically include a mixture record collective material preserved at particular location. We seek to determine if in 2014–2015 Holuhraun flow-field are discernible radar roughness analysis. Furthermore, we also distingui...

We have developed a method for determining paleoelevations of highland areas on the basis of the vesicularity of lava flows. Vesicular lavas preserve a record of paleopressure at the time and place of emplacement because the difference in internal pressure in bubbles at the base and top of a lava flow depends on atmospheric pressure and lava flow thickness. At the top of the flow, the pressure ...

River channels and valleys have been observed on several planetary bodies in addition to the Earth. Long sinuous valleys on Venus, our Moon and Jupiter's moon Io are clearly formed by lava, and branching valleys on Saturn's moon Titan may be forming today by rivers of methane. But by far the most dissected body in our Solar System apart from the Earth is Mars. Branching valleys that in plan res...

THE CITY OF HILa, on the island of Hawaii, lies on the flank of one of the world 's most active volcanoes, Mauna Loa. For more than a century the danger of destruction of the city by lava flows has been recognized. Old documents recount the apprehension with which Hilo residents watched the advance of the lava flows of 1852 and 1855. In 1881 concern was even greater, as the flow front crawled w...

Introduction: The acquisition of image data from the Mars Odyssey THermal EMission Imaging System (THEMIS) and the European Space Agency’s Mars Express High Resolution Stereo Camera (HRSC) have enabled new observations, and in some cases interpretations, of small volcanic features in the Tharsis region of Mars. While image resolution limitations have traditionally hampered detailed inspection o...