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Sa, 31. Okt 2020, 05:59
Devastation caused by the landslide. Source: AAP Newswire
At least nine people have been killed after torrential rain caused a landslide on the northeast flank of the volcano, which tore a 4 km path through the village of Los Angelitos, Nejapa. 60 homes were buried and 75 damaged. Landslides at San Salvador are a known hazard- other destructive events occurred in 1982 and 2001. ... alles lesen
Mi, 23. Jan 2013, 11:05
Current seismic signal San Salvador (GRDA station, SNET)
Small volcanic quakes and weak tremor are visible at the seismogram, but within normal levels for this active volcano. ... alles lesen

San Salvador

Schichtvulkan 1893 m / 6,211 ft
El Salvador, 13.73°N / -89.29°W
Aktueller Status: normal / ruhend (1 von 5)
Last update: 31 Oct 2020 (Devastating rain-caused landslide on NE flank)

San Salvador volcano is a massive stratovolcano immediately northwestwest of El Salvador city. Its modern summit cone is also called the Boqueron stratovolcano. It formed within a 6 km wide caldera left by the collapse of the predecessor volcano about 40,000 years ago. Remnants of the caldera rim form the Picacho and Jabalí peaks.
Boqueron volcano is truncated by a steep-walled, 500 m deep and 1500 m wide summit crater, which formed during a large eruption about 800 years ago. Before the last eruption in 1917, the crater of Boqueron contained a 400 m wide lake, which was replaced by a small, 30 m high young cinder cone, called Boqueroncito, built during the eruption along with a major lava flow on the north flank.
Most historical eruptions from San Salvador originated from flank vents.

Interaktive Karte zeigen
Typische Tätigkeit: effusive flank fissure eruptions
Ausbrüche: 1917, 1806 (?), 1671, 1658, 1572 ± 2, ?1200, 640 AD ± 30 years

TimeMag. / TiefeEntfernungEpizenter
Sat, 10 Apr 2021 (GMT) (1 earthquake)
2021-04-09 22:37:56 (10 Apr 2021 04:37:56 GMT)
2.6

26 km - Mehr
1 kmNordpazifik, 91 km südlich von San Salvador, El Salvador
Fri, 9 Apr 2021 (GMT) (2 Erdbeben)
9. Apr. 2021 02:18 (GMT -6) (9 Apr 2021 08:18:45 GMT)
3.4

1 km - Mehr
135 kmNordpazifik, 96 km südwestlich von Sonsonate, El Salvador
8. Apr. 2021 21:57 (GMT -6) (9 Apr 2021 03:57:40 GMT)
3.0

186 km - Mehr
20 kmDepartamento de La Libertad, 31 km nordwestlich von San Salvador, El Salvador
Wed, 7 Apr 2021 (GMT) (2 Erdbeben)
7. Apr. 2021 09:11 (GMT -6) (7 Apr 2021 15:11:31 GMT)
3.4

6 km - Mehr
109 kmNordpazifik, 81 km südlich von Sonsonate, El Salvador
7. Apr. 2021 01:41 (GMT -6) (7 Apr 2021 07:41:48 GMT)
3.1

10 km - Mehr
110 kmNordpazifik, 80 km südwestlich von Sonsonate, El Salvador

Beschreibung

The San Salvador or Quezaltepeque volcanic center formed in the southern part of the main graben of El Salvador and is dominantly andesitic. 3 fracture zones that extend beyond the base of San Salvador volcano have been the locus for numerous flank eruptions, including 2 that formed maars on the WNW and SE sides.
Most of the 4 historical eruptions recorded since the 16th century have originated from flank vents, including two eruptions in the 17th century from the NW-flank cone of El Playón, during which explosions and a lava flow damaged inhabited areas.

1999 unrest
A small seismic swarm occurred in August 1999, when volcano-tectonic earthquakes about 5 km from the crater were detected. No other signs of unrest were noted.

1917 eruption
The last eruption of San Salvador volcano began on 6 June 1917 following strong and destructive earthquakes lasting for 2 hours. The eruption consisted of an effusive fissure eruption on the NW flank followed by a moderately explosive summit eruption (similar, but smaller in scale, to the Eyafjallajökull eruption in 2010).
The effusive phase produced a large aa lava flow on the NW flank, left a row of cinder cones on the eruptive fissure, and lasted about a week. The second phase started simultaneously with the waning of the waning of the first phase from a fissure vent inside the summit crater. It quickly evaporated a former 400 m wide lake and built the small Boqueroncito cinder cone. ...mehr

See also: Sentinel hub | Landsat 8
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