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Volcano Calendar 2019: We're proud to present our 2019 volcano calendar: 13 different and attractive images of volcanoes, volcanic landscapes and phenomena taken during volcano tours over the past few years.
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30 mars - 6 avril 2019: Land of Theseus - Saronic Gulf (Greece)
2-17 mai 2019: Du Krakatau à Bali - Java (Indonésie)
4-11(12) mai 2019: Fascinant Volcan et la Légende de l'Atlantide - Île de Santorin, Grèce
4-12 mai 2019: Montagnes de Feu - du Stromboli à l'Etna - Eoliennes + Etna
18-26 mai 2019: Montagnes de Feu - du Stromboli à l'Etna - Eoliennes + Etna
25 mai - 1 juin 2019: Etna Discovery - Etna volcano (Italy)
7-12 juin 2019: Expédition au Volcan Yasur - Vanuatu (Mer du Sud)
8-23 juil. 2019: Du Krakatau à Bali - Java (Indonésie)
3-18 sept. 2019: Du Krakatau à Bali - Java (Indonésie)
12-20 oct. 2019: Montagnes de Feu - du Stromboli à l'Etna - Eoliennes + Etna
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Diaporama
Long Valley caldera (California, USA): small earthquake swarm east of Mammoth Mountain
Tuesday, Feb 11, 2014
An small earthquake swarm at shallow depths (around 5 km) occurred east of Mammoth Mountain during the past week. The largest quake was a magnitude 3.0 event on 5 Feb. ... [details]
Mammoth Mountain volcano (California, USA) activity update
Map of recent quakes near Mammoth Mountain
Sunday, Feb 03, 2013
Small earthquakes continue beneath and (mostly) immediately to the SE of Mammoth Mountain in the Sierra Nevada range. [details]
 

Mammoth Mountain volcan

lava domes 3369 m / 11,053 ft
California, USA, 37.63°N / -119.03°W
Condition actuelle: normal / en sommeil (1 sur 5)
Mammoth Mountain webcams / données en temps réel | Reports
Mammoth Mountain livres
Last update: 11 Feb 2014 (occasional seismic swarms)
Style éruptif tipique: effusif
Eruptions du volcan Mammoth Mountain: 1260 ± 40 years
HeureMag. / DepthDistanceLocation
Wed, 20 Feb 2019
Wed, 20 Feb 20:05 UTCM 1.0 / 3.1 km28 km26km SW of Toms Place, CA (USA)
Wed, 20 Feb 16:38 UTCM 1.0 / 4.8 km15 km11km W of Toms Place, CA (USA)
Wed, 20 Feb 11:23 UTCM 1.1 / 1.6 km26 km15km SW of Toms Place, CA (USA)
Wed, 20 Feb 11:19 UTCM 0.7 / 7.4 km14 km10km WNW of Toms Place, CA (USA)
Wed, 20 Feb 07:27 UTCM 0.5 / 6.1 km14 km12km WNW of Toms Place, CA (USA)
Voir tous
Mammoth Mountain est un complexe de lave-dôme sur le rebord SW de la caldeira de Long Valley, en Californie. Malgré sa relation géographique proche, on croit qu'il a sa propre chambre magmatique différentes de celles qui sous-tendent caldeira de Long Valley et les cratères d'Inyo.

Introduction:

The last eruption of the lava dome complex itself took place about 57,000 years ago. There are more than 35 vents fed by the same magma chamber, including Red Cones, two basaltic cinder cones SE of Mammoth Mountain and SE of Devils Postpile National Monument. The cones, whose name derives from their colorful upper scoria deposits, were radiocarbon dated at about 8900 years ago.
Phreatic eruptions on the north side of Mammoth Mountain took place about 700 years ago. The recent unrest, including seismicity, gas emission, and tree kill, at the Long Valley caldera is thought to be related to a dike intrusion beneath Mammoth Mountain in 1989.
(Source: GVP)


Derniers images satellite

en haut
 

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