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San Salvador Vulkan

Aktualisiert: 25. Sep. 2022 09:02 GMT -
Schichtvulkan 1893 m / 6,211 ft
El Salvador, 13.73°N / -89.29°W
Aktueller Status: normal / ruhend (1 von 5)
Last update: 9 Mär 2022 (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 anzeigen
Typische Aktivität: effusive flank fissure eruptions
Ausbrüche des San Salvador: 1917, 1806 (?), 1671, 1658, 1572 ± 2, ?1200, 640 AD ± 30 years

Letzte Erdbeben in der Nähe

UhrzeitMag. / TiefeEntfernung/Ort
Mittwoch, 21. September 2022 GMT (1 Beben)
20. Sep. 2022 23:14 (GMT -6) (21. Sep. 2022 05:14 GMT)
2.8

1 km
188 km (117 mi)
19 km nordwestlich von San Lorenzo, Departamento de Valle, Honduras
Dienstag, 20. September 2022 GMT (1 Beben)
19. Sep. 2022 20:49 (GMT -6) (20. Sep. 2022 02:49 GMT)
3.0

6 km
85 km (53 mi)
27 km nördlich von Usulutan, El Salvador
Mittwoch, 14. September 2022 GMT (2 Beben)
14. Sep. 2022 12:48 (GMT -6) (14. Sep. 2022 18:48 GMT)
2.8

5 km
158 km (98 mi)
Departamento de La Union, 39 km östlich von San Miguel, El Salvador
14. Sep. 2022 01:28 (GMT -6) (14. Sep. 2022 07:28 GMT)
4.0

5 km
25 km (16 mi)
19 km südlich von San Salvador, 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 | NASA FIRMS
Neueste Nachrichten
Sa, 31. Okt 2020, 05:59

San Salvador volcano (El Salvador) activity update: Devastating rain-caused landslide on NE flank

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. ... Read all
Mi, 23. Jan 2013, 11:05

San Salvador volcano (El Salvador) activity update

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. ... Read all
Neueste Nachrichten
Sa, 31. Okt 2020, 05:59

San Salvador volcano (El Salvador) activity update: Devastating rain-caused landslide on NE flank

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. ... Read all
Mi, 23. Jan 2013, 11:05

San Salvador volcano (El Salvador) activity update

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. ... Read all
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