CONTROLLED SOURCE SEISMIC INVESTIGATION OF THE CRUSTAL STRUCTURE BENEATH EREBUS VOLCANO AND ROSS ISLAND, ANTARCTICA
System (WARS), which is an area of active crustal extension. Mount Erebus, located on Ross Island is one of the few volcanoes on Earth that has a persistent, convecting lava lake. Marine geophysical observations north of Ross Island have identified the north-south trending Terror Rift within the old...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.211.2647 http://www.ees.nmt.edu/outside/alumni/papers/2011t_maraj_s.pdf |
| Summary: | System (WARS), which is an area of active crustal extension. Mount Erebus, located on Ross Island is one of the few volcanoes on Earth that has a persistent, convecting lava lake. Marine geophysical observations north of Ross Island have identified the north-south trending Terror Rift within the older and broader Victoria Land Basin, which is a component of the WARS. Mount Erebus and Ross Island are circumstantially associated with the Terror Rift and its thin (∼20 km) crust. The nature and extent of the Terror Rift in controlling the evolution of Ross Island volcanism and the on-going eruptive activity of Erebus volcano are unknown. A controlled-source seismic experiment (Tomo-Erebus, TE) was undertaken during the 2008-2009 Austral summer field season to examine the shallow magmatic system beneath Erebus volcano (TE-3D) and the deeper crustal structure beneath Ross Island (TE-2D). This work investigates the TE-2D component, which was designed to produce a two-dimensional P wave velocity model along a 76 km east-west profile across Ross Island. For TE-2D, 21 seismic recorders (Ref |
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