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1943 Alahan Panjang earthquakes

Earthquakes in Indonesia

1943 Alahan Panjang earthquakes
Summary

Earthquakes in Indonesia

FieldValue
title1943 Alahan Panjang earthquakes
map2{{Location mapIndonesia Sumatra
reliefyes
lat-1.0
long101.0
markBullseye1.png
marksize40
positiontop
width250
floatright
local-dateJune 9, 1943
timestampdoublet
timestamp-A1943-06-08 20:42:46
timestamp-B1943-06-09 03:06:20
local-time-A03:42:46
local-time-B10:06:20
isc-event-A899871
isc-event-B899872
anss-url-A/iscgem899871
anss-url-B/iscgem899872
magnitude-A7.5
magnitude-B7.8
depth15 km
10 km
location
countries affectedIndonesia
intensityIX (Destructive) (both events)

| local-date = June 9, 1943 | timestamp-A = 1943-06-08 20:42:46 | timestamp-B = 1943-06-09 03:06:20 | local-time-A = 03:42:46 | local-time-B = 10:06:20 | isc-event-A = 899871 | isc-event-B = 899872 | anss-url-A = /iscgem899871 | anss-url-B = /iscgem899872 | magnitude-A = 7.5 | magnitude-B = 7.8 10 km

Map of the Great Sumatran Fault with labelled segments

The 1943 Alahan Panjang earthquakes occurred on June 8 and June 9 UTC (June 9, 1943, local time) in Sumatra, then under Japanese occupation. This was an earthquake doublet (the shocks occurred at the same location on consecutive days).

The first mainshock occurred on June 8 at 20:42 UTC. It ruptured the Suliti segment of the Sumatran Fault Zone. The magnitude was given as 7.2,

The second mainshock occurred on June 9 at 03:06 UTC. It ruptured the Sumani segment of the Sumatran Fault Zone and perhaps the northwestern part of the Suliti segment. The magnitude was given as 7.5, or 7.4.

Alahan Panjang was damaged in the earthquakes. Right lateral offsets were reported near the town of Solok.

Near the Sumani segment, earthquake doublets occurred repeatedly. Similar earthquake doublet nearby include the earthquakes in 1926 and 2007.

References

References

  1. {{Short-isc. OB. 899871
  2. {{Short-isc. OB. 899872
  3. (2007). "The Sumatran Fault Zone – from Source to Hazard". [[Journal of Earthquake and Tsunami]].
  4. Natawidjaja, D. H.. (2003). "Neotectonics of the Sumatran fault and paleogeodesy of the Sumatran subduction zone". [[California Institute of Technology]].
  5. (2010). "Source model of an earthquake doublet that occurred in a pull-apart basin along the Sumatran fault, Indonesia". [[Geophysical Journal International]].
  6. Aydan, Ö.. (2007). "A reconnaissance report on the 2007 Singkarak Lake (Solok) earthquake with and emphasis on the seismic activity of Sumatra Fault following the 2004 and 2005 great off-Sumatra earthquakes". [[Japan Society of Civil Engineers]].
  7. (2002). "International Handbook of Earthquake & Engineering Seismology". [[Academic Press]].
  8. (2022). "Gempa Nusantara: A Database of 7380 Macroseismic Observations for 1200 Historical Earthquakes in Indonesia from 1546 to 1950". Bulletin of the Seismological Society of America.
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

1943-earthquakes 1943-in-indonesia earthquakes-in-indonesia june-1943-in-asia 1943-disasters-in-indonesia
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