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Constraining the Depth of Magma Reservoirs on Venus

De Toffoli, B. and Mazzarini, F. and Plesa, Ana-Catalina and Hauber, Ernst and Breuer, Doris (2021) Constraining the Depth of Magma Reservoirs on Venus. AGU Fall Meeting, 2021-12-13 - 2021-12-17, New Orleans USA & Online Everywhere.

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Official URL: https://agu.confex.com/agu/fm21/meetingapp.cgi/Paper/947420


The surface of Venus is dominated by volcanic materials and hundreds of volcanic edifices can be found across the planet [1]. The largest among these are the so-called coronae, i.e., circular to elongated features surrounded by concentric fractures that reach diameters of hundreds of kilometers, and large shield volcanoes (100-1000 km diameter); in addition thousands of small shield volcanoes (few tens of kilometers in diameter) pepper the Venusian surface. Such a large and widespread volcano population suggests the presence of a significant number of subcrustal/crustal magma reservoirs formed by magmatic upwelling. In order to produce the buoyancy necessary to mobilize magma, the energy available to the system needs to reach a critical value. When this condition is met, a gravitational instability occurs and leads to the vertical spread of material. The Rayleigh Taylor gravitational instability theory can be used to draw a relationship between the spacing of volcanic structures and edifices at the surface and the depth of the magmatic reservoirs beneath the volcanic fields. This analysis has been applied to volcanic clusters at several locations on Earth such as the Newer Volcanic Province in Southern Australia [2] and the Main Ethiopian Rift [3]. Assuming that the Rayleigh Taylor instability theory applied to coronae and volcanic fields on Venus, we use this approach to identify the depth of magma source regions that fed, and perhaps still feed, these features.

Item URL in elib:https://elib.dlr.de/148217/
Document Type:Conference or Workshop Item (Poster)
Title:Constraining the Depth of Magma Reservoirs on Venus
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
De Toffoli, B.UNSPECIFIEDhttps://orcid.org/0000-0002-3106-5689UNSPECIFIED
Mazzarini, F.Istituto Nazionale di Geofisica e VulcanologiaUNSPECIFIEDUNSPECIFIED
Plesa, Ana-CatalinaUNSPECIFIEDhttps://orcid.org/0000-0003-3366-7621UNSPECIFIED
Hauber, ErnstUNSPECIFIEDhttps://orcid.org/0000-0002-1375-304XUNSPECIFIED
Breuer, DorisUNSPECIFIEDhttps://orcid.org/0000-0001-9019-5304UNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:P45E-2472
Keywords:Venus, Volcanic structures, Thermal lithosphere
Event Title:AGU Fall Meeting
Event Location:New Orleans USA & Online Everywhere
Event Type:international Conference
Event Start Date:13 December 2021
Event End Date:17 December 2021
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Exploration of the Solar System
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Physics
Institute of Planetary Research > Planetary Geology
Deposited By: Plesa, Dr. Ana-Catalina
Deposited On:12 Jan 2022 07:54
Last Modified:24 Apr 2024 20:46

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