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Katla volcan

Mise à jour: 3 févr.. 2023 09:59 GMT -
volcan sous-glaciaire 1512 m / 4,961 ft
Southern Iceland, 63.63°N / -19.06°W
Condition actuelle: normal / en sommeil (1 sur 5)
Last update: 18 oct. 2022 (continuous seismic swarm may trigger glacial flood, jökulhlaup warning)

Katla volcano, located near the southern end of Iceland's eastern volcanic zone, is hidden beneath the Myrdalsjökull icecap. Katla is one of Iceland's most active and most dangerous volcanoes, infamous for its large eruptions happening on average every 50-100 year, causing devastating glacial floods (jökullhlaups).
In recent year, increased seismicity and inflation of Katla has been being measured. Katla, statistically due for a new eruption, is being very closely monitored and an eruption in a not too distant future would not come as a big surprise.

Montrer carte interactive
Style éruptif tipique: Explosive basaltic and dacitic eruptions, voluminous lava flows
Eruptions du volcan Katla: 920 AD, 950 AD (?), 1150, 1177, 1245, 1262, 1311, 1357, 1416, 1440, 1450, 1500, 1580, 1612, 1625, 1660-61, 1721, 1755-56, 1823, 1860, 1918, 1955(?), 1999(?), 1918

Derniers séismes proches

HeureMag. / ProfondeurDistance/Lieu
dimanche, 29 janvier 2023 GMT (2 séismes)
29 janv. 2023 07:55 (GMT +0) (29 janv.. 2023 07:55 GMT)
2.7

0.1 km
6.7 km (4.2 mi)
Iceland: 3.0 Km ESE of Goðabunga
29 janv. 2023 07:55 (GMT +0) (29 janv.. 2023 07:55 GMT)
2.7

0.1 km
6.7 km (4.2 mi)
Iceland: 3.0 Km ESE of Goðabunga

Introduction

The subglacial dominantly basaltic volcano is one of Iceland's most active and is a frequent producer of damaging jökulhlaups, or glacier-outburst floods. A large 9 x 14 km subglacial caldera with a long axis in a NW-SE direction is up to 750 m deep. Its high point reaches 1380 m, and three major outlet glaciers have breached its rim.

Although most historical eruptions have taken place from fissures inside the caldera, the Eldgjá fissure system, which extends about 60 km to the NE from the current ice margin towards Grímsvötn volcano, has been the source of major Holocene eruptions. An eruption from the Eldgjá fissure system about 934 AD produced a voluminous lava flow of about 18 cu km, one of the world's largest known Holocene lava flows. Katla has been the source of frequent subglacial basaltic explosive eruptions that have been among the largest tephra-producers in Iceland during historical time and has produced dacitic explosive eruptions during the Holocene.

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Source: GVP, Smithsonian Institute


See also: Sentinel hub | Landsat 8 | NASA FIRMS
Location of Katla volcano and other volcanoes on Iceland
Location of Katla volcano and other volcanoes on Iceland
mar., 18 oct. 2022, 04:57

Katla volcano (Southern Iceland): continuous seismic swarm may trigger glacial flood, jökulhlaup warning

Distribution of earthquakes beneath Mýrdalsjökull glacier, blue lines refer to water/drainage divides, MY signs refer to cauldrons (image: Kristín Jónsdóttir)
A swarm of small earthquakes has been occurring beneath Mýrdalsjökull glacier covering Katla volcano over the past 2 days. ... Read all
ven., 4 sept. 2020, 08:13

Katla volcano (Iceland): earthquake yesterday

Earthquake detected near the Katla caldera yesterday (image: Volcano Discovery)
The Icelandic Met Office (IMO) recorded an earthquake with magnitude M 3.1 that occurred at 12:39 local time yesterday located in the northeastern part of the Katla caldera near Austmannsbunga. ... Read all
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