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Recent Hotspot Volcanism on Venus from VIRTIS Emissivity Data

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). American Association for the Advancement of Science (AAAS). DOI: 10.1126/science.1186785

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Abstract

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.

Item URL in elib:https://elib.dlr.de/71458/
Document Type:Article
Title:Recent Hotspot Volcanism on Venus from VIRTIS Emissivity Data
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Smrekar , Suzanne E.Jet Propulsion Laboratory, Mail Stop 183-501, 4800 Oak Grove Drive, Pasadena, CA 91109, USAUNSPECIFIED
Stofan, Ellen R.Proxemy Research, 20528 Farcroft Lane, Laytonsville, MD 20882, USAUNSPECIFIED
Müller, Nilsnils.mueller (at) dlr.deUNSPECIFIED
Treimann, AllanLunar and Planetary Institute, 3600 Bay Area Boulevard, Houston, TX 77058, USAUNSPECIFIED
Elkins-Tanton, LindaMassachusetts Institute of Technology, Earth, Atmospheric, and Planetary Sciences, Building 54-824, 77 Massachusetts Avenue, Cambridge, MA 02139, USAUNSPECIFIED
Helbert, Jörnjoern.helbert (at) dlr.deUNSPECIFIED
Piccioni, GiuseppeIstituto Nazionale di Astrofisica-Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF), Via del Fosso del Cavaliere 100, 00133 Rome, ItalyUNSPECIFIED
Drossart, PierreLaboratoire d'Études Spatiales et d'Instrumentation en Astrophysique (LESIA), Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 Place Jules Janssen, 92195 Meudon, FranceUNSPECIFIED
Date:April 2010
Journal or Publication Title:Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:328
DOI :10.1126/science.1186785
Publisher:American Association for the Advancement of Science (AAAS)
Status:Published
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 (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Terahertz and Infrared Sensors
Deposited By: Helbert, Dr.rer.nat. Jörn
Deposited On:08 Nov 2011 10:39
Last Modified:08 Mar 2018 18:50

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