WebMar 18, 2016 · The main features of the tectonically and magmatically active subduction system covered by the map are the South Sandwich Trench, the Southudes the South Sandwich Islands, and the East Scotia Ridge back-arc spreading centre (Livermore et al. 1997, Fretzdorff et al. 2002, Larter et al. 2003, Leat et jtKlVfC2k1Ya WebThe islands’ peaks range in elevation between 1,807 feet (551 m) and 3,600 feet (1,100 m), and stand in about 8,500 feet (2,600 m) of water. As is apparent in this true-color image, the islands are tall enough to disrupt the cloud patterns forming and flowing around them. Most of this scene is dominated by a large formation of low-level dyCs6KkotvkR WebAug 12, 2021 · M 8.1 - South Sandwich Islands region.-12 18:35:17 (UTC) 58.375°S 25.264°W. 22.8 km depth. Seismic observations suggest this earthquake is part of aplex seismic sequence. Our current interpretation is that this earthquake is the mainshock to a M7.5 that occurred ~170s earlier. The location, depth, mechanism, and mGy59gUIys3G WebAug 12, 2022 · On August 12, 2021, a series of powerful earthquakes shook the South Sandwich Islands. The initial earthquake measured magnitude 7.5 Mw. Just three minutes later, an 8.1 Mw quake followed, rupturing the shallow subduction zone. The entire event lasted an unusually long 260 seconds. p6N0dwOyjaIO
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