Smrekar , Suzanne E. and Stofan, Ellen R. and Müller, Nils and Treimann, Allan and Elkins-Tanton, Linda and Helbert, Jörn and Piccioni, Giuseppe and Drossart, Pierre (2010) Recent Hotspot Volcanism on Venus from VIRTIS Emissivity Data. Science, 328 (5978). Science. DOI: 10.1126/science.1186785.
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The questions of whether Venus is geologically active and how the planet has resurfaced over the past billion years have major implications for interior dynamics and climate change. Nine “hotspots”—areas analogous to Hawaii, with volcanism, broad topographic rises, and large positive gravity anomalies suggesting mantle plumes at depth—have been identified as possibly active. This study used variations in the thermal emissivity of the surface observed by the Visible and Infrared Thermal Imaging Spectrometer on the European Space Agency’s Venus Express spacecraft to identify compositional differences in lava flows at three hotspots. The anomalies are interpreted as a lack of surface weathering. We estimate the flows to be younger than 2.5 million years and probably much younger, about 250,000 years or less, indicating that Venus is actively resurfacing.
|Title:||Recent Hotspot Volcanism on Venus from VIRTIS Emissivity Data|
|Journal or Publication Title:||Science|
|In Open Access:||No|
|In ISI Web of Science:||Yes|
|Keywords:||Venus, Vulkanismus, VenusExpress|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||Space Science and Exploration|
|DLR - Research area:||Raumfahrt|
|DLR - Program:||R EW - Erforschung des Weltraums|
|DLR - Research theme (Project):||R - Vorhaben Venus Express Kamera|
|Institutes and Institutions:||Institute of Planetary Research > Terahertz and Infrared Sensors|
|Deposited By:||Dr.rer.nat. Jörn Helbert|
|Deposited On:||08 Nov 2011 10:39|
|Last Modified:||26 Mar 2013 13:31|
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