| 词条 | 1983 Chagos Archipelago earthquake |
| 释义 |
|title = 1983 Chagos Archipelago earthquake |date = {{Start date|1983|11|30|df=y}} |map2 = {{Location map | Indian Ocean | relief = yes | label = | lat = -6.85 | long = 72.11 | mark = Bullseye1.png | marksize = 30 | position = top | width = 250 | float = right | caption = }} |magnitude = {{M|s|link=y}} 7.7 |depth = 10 km |location = {{Coord|6.85|S|72.11|E}} |countries affected = |casualties = }} The 1983 Chagos Archipelago earthquake occurred on November 30 at 17:46 UTC in the region of the Chagos Archipelago, British Indian Ocean Territory. This earthquake had a magnitude of {{M|s|link=y}} 7.7. This earthquake occurred in the Indian Plate near the Central Indian Ridge. The Central Indian Ridge is unusually active in near-ridge earthquakes. The intense seismic activity in this region may indicate an early stage of converging plate boundary, which is responsible for the N-S extension near Chagos. There was a 40 cm tsunami reported in Victoria, Seychelles.[1][2] References1. ^{{cite web|url=http://www.gps.caltech.edu/uploads/File/People/kanamori/HKjgr88b.pdf |title=Archived copy |accessdate=2010-10-16 |deadurl=yes |archiveurl=https://web.archive.org/web/20110614090231/http://www.gps.caltech.edu/uploads/File/People/kanamori/HKjgr88b.pdf |archivedate=2011-06-14 |df= }} 2. ^https://earthquake.usgs.gov/earthquakes/eqarchives/significant/sig_1983.php External links
5 : Earthquakes in Asia|1983 earthquakes|Chagos Archipelago|1983 tsunamis|1983 in Seychelles |
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