YV_2011 : RUM-RHUM

RHUM-RUM experiment, 2011-2015, code YV (Réunion Hotspot and Upper Mantle – Réunion's Unterer Mantel) funded by ANR, DFG, CNRS-INSU, IPEV, TAAF, instrumented by DEPAS, INSU-OBS, AWI and the Universities of Muenster, Bonn, La Réunion

https://seismology.resif.fr/networks/#/YV__2011
Terrestrial seismic network Lithosphere and Asthenosphere Upper and lower mantle tomography Seismic anisotropy and mantle flow Body and surface wave seismology Réunion Hotspot Piton de la Fournaise volcano Mantle plume Ocean Bottom seismometers Mascareignes basin Central and South-West Indian ridges Rodrigues ridge Ocean bottom seismic and hydroacoustic network  Creative Commons Attribution 4.0 International

Abstract : RHUM-RUM (Réunion Hotspot and Upper Mantle - Réunions Unterer Mantel) is a French-German passive seismic experiment designed to image an oceanic mantle plume – or lack of plume – from crust to core beneath La Réunion Island, and to understand these results in terms of material, heat flow and plume dynamics. La Réunion hotspot is one of the most active volcanoes in the world, and its hotspot track leads to the Deccan Traps of India, one of the largest flood basalt provinces on Earth, which erupted 65 Ma ago. The genesis and the origin at depth of the mantle upwelling and of the hotspot are still very controversial. In the RHUM-RUM project, 57 German and French ocean-bottom seismometers (OBS) have been deployed in october 2012 over an area of 2000 km x 2000 km2 centered on La Réunion Island, using the French “Marion Dufresne” vessel and have been recovered in October 2013 by the German “Meteor” vessel. The one-year OBS deployment (Oct. 2012 – Oct. 2013) is augmented by terrestrial deployments in the Iles Eparses in the Mozambique Channel, in Madagascar, Seychelles, Mauritius, Rodrigues and La Réunion islands. A significant number of OBS has been also distributed along the Central and South West Indian Ridges to image the lower-mantle beneath the hotspot, but also to provide independent opportunity for the study of these slow to ultra-slow ridges and of possible plume-ridge interactions, in particular beneath the Rodrigues ridge that could sign a physical link between the Réunion hotspot and the Central Indian Ridge.

Abstract : RHUM-RUM (Réunion Hotspot and Upper Mantle - Réunions Unterer Mantel) is a French-German passive seismic experiment designed to image an oceanic mantle plume – or lack of plume – from crust to core beneath La Réunion Island, and to understand these results in terms of material, heat flow and plume dynamics. La Réunion hotspot is one of the most active volcanoes in the world, and its hotspot track leads to the Deccan Traps of India, one of the largest flood basalt provinces on Earth, which erupted 65 Ma ago. The genesis and the origin at depth of the mantle upwelling and of the hotspot are still very controversial. In the RHUM-RUM project, 57 German and French ocean-bottom seismometers (OBS) have been deployed in october 2012 over an area of 2000 km x 2000 km2 centered on La Réunion Island, using the French “Marion Dufresne” vessel and have been recovered in October 2013 by the German “Meteor” vessel. The one-year OBS deployment (Oct. 2012 – Oct. 2013) is augmented by terrestrial deployments in the Iles Eparses in the Mozambique Channel, in Madagascar, Seychelles, Mauritius, Rodrigues and La Réunion islands. A significant number of OBS has been also distributed along the Central and South West Indian Ridges to image the lower-mantle beneath the hotspot, but also to provide independent opportunity for the study of these slow to ultra-slow ridges and of possible plume-ridge interactions, in particular beneath the Rodrigues ridge that could sign a physical link between the Réunion hotspot and the Central Indian Ridge.

Publication : 2017
Issued : Jan. 1, 2017
Collected : April 5, 2011 -> Dec. 31, 2015

-33.7018 < Latitude < -11.5824
40.3401 < Longitude < 70.0222
Madagascar, la Réunion, Mauritius, Rodrigues, Mozambique channel, Iles Eparses, South-West Indian ridge, Central Indian ridge 
Approx. 2.5 Tb;78 stations


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