Volcan Mont Spurr
L'un des volcans actifs les plus proches d'Anchorage, à environ 125 km à l'ouest. Son éruption de 1992 a saupoudré la ville de cendres et fermé l'aéroport. Une nouvelle période d'agitation a commencé en 2024 avec la hausse des séismes, des émissions de gaz et du soulèvement du sol, et en 2025 les scientifiques ont averti qu'une éruption était probable.
Dernière éruption
1992
Éruption au XXe siècle
Sommet
3.4 km
Stratovolcan · Andésite / Andésite basaltique
Activité
Niveau de fond normal
1 événements (taux ×0.7)
Carte interactive du volcan et de la sismicité
Sismicité dans un rayon de 50 km, panaches de cendres VAAC actifs et limites des plaques tectoniques.
Sismicité récente dans un rayon de 50 km
1 événements au cours des 12 dernières heures à moins de 25 km du cratère.0.7 fois le taux habituel de ce volcan.
| Heure | Magnitude | Épicentre / lieu | Distance |
|---|---|---|---|
| 6m il y a | M0.9 | 75 km SW of Skwentna, Alaska | 27 km |
| 11h il y a | M0.5 | 72 km WNW of Beluga, Alaska | 11 km |
| 12h il y a | M2.5 | 44 km WNW of Beluga, Alaska | 21 km |
| 1d il y a | M0.5 | 70 km WNW of Tyonek, Alaska | 6.4 km |
| 1d il y a | M2.2 | 62 km W of Tyonek, Alaska | 30 km |
| 1d il y a | M0.6 | 66 km WNW of Beluga, Alaska | 3.8 km |
| 1d il y a | M0.5 | 57 km WNW of Beluga, Alaska | 10 km |
| 1d il y a | M1.7 | 17 km WNW of Tyonek, Alaska | 48 km |
| 1d il y a | M0.9 | 70 km WNW of Tyonek, Alaska | 5.3 km |
| 2d il y a | M0.4 | 74 km WNW of Beluga, Alaska | 18 km |
| 2d il y a | M0.4 | 69 km WNW of Tyonek, Alaska | 8.7 km |
| 2d il y a | M1.7 | 52 km WNW of Beluga, Alaska | 13 km |
| 2d il y a | M1.8 | 37 km NW of Beluga, Alaska | 38 km |
| 3d il y a | M1.0 | 65 km WNW of Tyonek, Alaska | 11 km |
| 3d il y a | M1.9 | 52 km SSW of Skwentna, Alaska | 38 km |
| 3d il y a | M2.0 | 52 km SSW of Skwentna, Alaska | 37 km |
| 4d il y a | M0.4 | 68 km WNW of Beluga, Alaska | 8.9 km |
| 4d il y a | M0.4 | 63 km WNW of Beluga, Alaska | 7.0 km |
| 4d il y a | M0.5 | 68 km WNW of Beluga, Alaska | 11 km |
| 4d il y a | M0.3 | 58 km WNW of Tyonek, Alaska | 7.1 km |
| 4d il y a | M1.4 | 39 km NW of Beluga, Alaska | 37 km |
| 5d il y a | M1.5 | 57 km SSW of Skwentna, Alaska | 32 km |
| 5d il y a | M1.1 | 69 km WNW of Beluga, Alaska | 9.3 km |
| 5d il y a | M1.2 | 52 km SSW of Skwentna, Alaska | 37 km |
| 6d il y a | M1.1 | 59 km WNW of Beluga, Alaska | 5.8 km |
| 6d il y a | M0.6 | 61 km WNW of Beluga, Alaska | 9.3 km |
| 6d il y a | M0.6 | 58 km WNW of Beluga, Alaska | 6.7 km |
| 6d il y a | M1.0 | 46 km SW of Skwentna, Alaska | 44 km |
| 6d il y a | M0.5 | 66 km WNW of Beluga, Alaska | 5.6 km |
| 6d il y a | M0.9 | 32 km NNW of Beluga, Alaska | 47 km |
| 6d il y a | M1.0 | 46 km NW of Beluga, Alaska | 31 km |
| 6d il y a | M0.4 | 65 km WNW of Beluga, Alaska | 6.0 km |
| 7d il y a | M-0.7 | 69 km WNW of Tyonek, Alaska | 4.6 km |
| 7d il y a | M0.8 | 52 km SSW of Skwentna, Alaska | 37 km |
| 7d il y a | M-0.3 | 65 km W of Tyonek, Alaska | 16 km |
| 7d il y a | M0.6 | 65 km SW of Skwentna, Alaska | 26 km |
| 7d il y a | M1.0 | 57 km SSW of Skwentna, Alaska | 32 km |
| 7d il y a | M1.3 | 53 km SSW of Skwentna, Alaska | 36 km |
| 8d il y a | M0.7 | 57 km SSW of Skwentna, Alaska | 33 km |
| 8d il y a | M0.5 | 56 km SSW of Skwentna, Alaska | 33 km |
| 8d il y a | M0.5 | 56 km SSW of Skwentna, Alaska | 33 km |
| 8d il y a | M0.3 | 55 km SSW of Skwentna, Alaska | 34 km |
| 8d il y a | M0.1 | 56 km SSW of Skwentna, Alaska | 33 km |
| 8d il y a | M0.8 | 56 km SSW of Skwentna, Alaska | 33 km |
| 8d il y a | M1.1 | 55 km SSW of Skwentna, Alaska | 35 km |
| 8d il y a | M0.2 | 56 km SSW of Skwentna, Alaska | 34 km |
| 8d il y a | M1.8 | 44 km W of Tyonek, Alaska | 32 km |
| 8d il y a | M0.9 | 54 km SSW of Skwentna, Alaska | 35 km |
| 8d il y a | M-0.1 | 56 km SSW of Skwentna, Alaska | 34 km |
| 8d il y a | M0.6 | 56 km SSW of Skwentna, Alaska | 33 km |
| 8d il y a | M2.0 | 37 km NNW of Beluga, Alaska | 48 km |
| 8d il y a | M0.7 | 69 km WNW of Tyonek, Alaska | 5.2 km |
| 8d il y a | M2.0 | 28 km NW of Beluga, Alaska | 42 km |
| 9d il y a | M-0.4 | 60 km W of Tyonek, Alaska | 15 km |
| 9d il y a | M0.3 | 66 km WNW of Beluga, Alaska | 2.6 km |
| 9d il y a | M2.1 | 46 km WNW of Tyonek, Alaska | 19 km |
| 10d il y a | M2.1 | 65 km WNW of Beluga, Alaska | 17 km |
| 10d il y a | M-0.6 | 58 km WNW of Beluga, Alaska | 9.2 km |
| 10d il y a | M0.5 | 71 km WNW of Beluga, Alaska | 12 km |
| 10d il y a | M1.4 | 66 km WNW of Beluga, Alaska | 11 km |
| 11d il y a | M0.5 | 65 km WNW of Beluga, Alaska | 4.1 km |
| 11d il y a | M0.6 | 59 km WNW of Beluga, Alaska | 6.0 km |
| 11d il y a | M0.7 | 66 km WNW of Tyonek, Alaska | 11 km |
| 12d il y a | M0.7 | 55 km WNW of Tyonek, Alaska | 11 km |
| 13d il y a | M0.5 | 70 km WNW of Tyonek, Alaska | 5.7 km |
| 13d il y a | M-0.2 | 80 km WNW of Tyonek, Alaska | 15 km |
| 13d il y a | M0.9 | 72 km WNW of Beluga, Alaska | 15 km |
| 13d il y a | M0.5 | 91 km W of Tyonek, Alaska | 34 km |
| 13d il y a | M1.9 | 61 km W of Tyonek, Alaska | 24 km |
| 14d il y a | M0.4 | 59 km WNW of Beluga, Alaska | 16 km |
| 15d il y a | M0.0 | 63 km W of Tyonek, Alaska | 19 km |
| 15d il y a | M0.2 | 60 km WNW of Beluga, Alaska | 17 km |
| 15d il y a | M-0.0 | 59 km WNW of Beluga, Alaska | 17 km |
| 15d il y a | M0.1 | 62 km WNW of Beluga, Alaska | 16 km |
| 16d il y a | M2.0 | 28 km NW of Beluga, Alaska | 42 km |
| 17d il y a | M0.6 | 67 km WNW of Tyonek, Alaska | 8.3 km |
| 17d il y a | M-0.7 | 59 km WNW of Beluga, Alaska | 8.7 km |
| 17d il y a | M0.0 | 58 km WNW of Beluga, Alaska | 17 km |
| 17d il y a | M0.1 | 69 km WNW of Tyonek, Alaska | 11 km |
| 17d il y a | M0.8 | 78 km WNW of Tyonek, Alaska | 14 km |
| 17d il y a | M1.0 | 40 km WSW of Tyonek, Alaska | 39 km |
| 17d il y a | M-0.3 | 69 km WNW of Beluga, Alaska | 4.9 km |
| 17d il y a | M0.4 | 67 km WNW of Beluga, Alaska | 4.0 km |
| 18d il y a | M-0.7 | 69 km WNW of Tyonek, Alaska | 5.0 km |
| 18d il y a | M0.8 | 70 km WNW of Tyonek, Alaska | 6.3 km |
| 18d il y a | M0.7 | 70 km WNW of Tyonek, Alaska | 5.5 km |
| 18d il y a | M0.7 | 73 km WNW of Beluga, Alaska | 9.1 km |
| 18d il y a | M1.7 | 65 km W of Tyonek, Alaska | 29 km |
| 19d il y a | M1.5 | 30 km W of Tyonek, Alaska | 40 km |
| 19d il y a | M1.4 | 41 km WNW of Tyonek, Alaska | 25 km |
| 19d il y a | M1.8 | 21 km WNW of Beluga, Alaska | 44 km |
| 20d il y a | M1.5 | 61 km W of Tyonek, Alaska | 30 km |
| 20d il y a | M-0.3 | 84 km W of Tyonek, Alaska | 25 km |
| 20d il y a | M-0.6 | 57 km WNW of Tyonek, Alaska | 8.2 km |
| 21d il y a | M1.1 | 65 km WNW of Beluga, Alaska | 3.4 km |
| 21d il y a | M1.3 | 43 km WNW of Tyonek, Alaska | 22 km |
| 21d il y a | M-0.6 | 57 km WNW of Beluga, Alaska | 8.8 km |
| 21d il y a | M1.3 | 59 km W of Tyonek, Alaska | 15 km |
| 22d il y a | M0.5 | 67 km WNW of Tyonek, Alaska | 4.5 km |
| 22d il y a | M1.1 | 39 km NW of Beluga, Alaska | 41 km |
| 22d il y a | M-0.3 | 65 km W of Tyonek, Alaska | 31 km |
| 22d il y a | M0.0 | 90 km W of Tyonek, Alaska | 33 km |
| 22d il y a | M0.6 | 63 km NW of Beluga, Alaska | 25 km |
| 23d il y a | M-0.8 | 68 km WNW of Tyonek, Alaska | 3.9 km |
| 23d il y a | M1.0 | 72 km WNW of Tyonek, Alaska | 13 km |
| 23d il y a | M0.4 | 58 km WNW of Tyonek, Alaska | 7.7 km |
| 23d il y a | M1.8 | 44 km SSW of Skwentna, Alaska | 48 km |
| 23d il y a | M-0.6 | 57 km WNW of Beluga, Alaska | 8.5 km |
| 23d il y a | M2.2 | 49 km SSW of Skwentna, Alaska | 45 km |
| 24d il y a | M-0.5 | 61 km W of Tyonek, Alaska | 14 km |
| 24d il y a | M-0.6 | 63 km WNW of Tyonek, Alaska | 12 km |
| 24d il y a | M0.6 | 49 km WNW of Tyonek, Alaska | 19 km |
| 24d il y a | M2.3 | 47 km WNW of Beluga, Alaska | 23 km |
| 24d il y a | M-0.0 | 56 km WNW of Tyonek, Alaska | 9.7 km |
| 24d il y a | M1.1 | 32 km WNW of Tyonek, Alaska | 33 km |
| 25d il y a | M-0.1 | 57 km W of Tyonek, Alaska | 24 km |
| 25d il y a | M1.8 | 38 km WSW of Tyonek, Alaska | 41 km |
| 25d il y a | M1.8 | 64 km WNW of Tyonek, Alaska | 1.5 km |
| 26d il y a | M0.7 | 64 km WNW of Beluga, Alaska | 2.5 km |
| 26d il y a | M0.8 | 72 km WNW of Beluga, Alaska | 14 km |
| 26d il y a | M0.6 | 66 km WNW of Beluga, Alaska | 2.5 km |
| 28d il y a | M-0.4 | 58 km WNW of Beluga, Alaska | 8.9 km |
| 28d il y a | M1.1 | 42 km SW of Skwentna, Alaska | 47 km |
| 29d il y a | M0.8 | 60 km W of Tyonek, Alaska | 29 km |
| 29d il y a | M-0.2 | 64 km W of Tyonek, Alaska | 18 km |
| 29d il y a | M-0.1 | 41 km WNW of Beluga, Alaska | 23 km |
| 29d il y a | M0.9 | 63 km WNW of Nikiski, Alaska | 37 km |
| 29d il y a | M-0.5 | 70 km WNW of Tyonek, Alaska | 5.4 km |
| 29d il y a | M-0.8 | 68 km WNW of Tyonek, Alaska | 5.2 km |
| 30d il y a | M0.4 | 69 km WNW of Tyonek, Alaska | 5.2 km |
| 30d il y a | M-0.7 | 69 km WNW of Tyonek, Alaska | 5.2 km |
| 30d il y a | M1.8 | 65 km SW of Skwentna, Alaska | 32 km |
| 31d il y a | M-0.4 | 70 km WNW of Tyonek, Alaska | 5.4 km |
| 31d il y a | M-0.6 | 70 km WNW of Tyonek, Alaska | 5.6 km |
| 31d il y a | M0.1 | 66 km WNW of Beluga, Alaska | 3.6 km |
| 32d il y a | M-0.1 | 58 km WNW of Beluga, Alaska | 14 km |
| 32d il y a | M-0.4 | 64 km WNW of Beluga, Alaska | 2.2 km |
| 32d il y a | M-0.4 | 69 km WNW of Tyonek, Alaska | 5.6 km |
| 32d il y a | M0.1 | 60 km WNW of Tyonek, Alaska | 5.4 km |
| 32d il y a | M1.9 | 45 km WSW of Tyonek, Alaska | 43 km |
| 33d il y a | M2.0 | 19 km WNW of Beluga, Alaska | 46 km |
| 33d il y a | M2.4 | 56 km WNW of Nikiski, Alaska | 49 km |
| 34d il y a | M-0.3 | 60 km W of Tyonek, Alaska | 14 km |
| 35d il y a | M1.9 | 61 km WNW of Nikiski, Alaska | 40 km |
| 35d il y a | M1.4 | 24 km NW of Beluga, Alaska | 46 km |
| 35d il y a | M1.4 | 50 km NNW of Beluga, Alaska | 43 km |
| 35d il y a | M0.5 | 83 km SW of Skwentna, Alaska | 22 km |
| 35d il y a | M0.5 | 49 km SSW of Skwentna, Alaska | 42 km |
| 35d il y a | M0.5 | 54 km W of Tyonek, Alaska | 18 km |
| 35d il y a | M1.2 | 57 km SSW of Skwentna, Alaska | 32 km |
| 35d il y a | M0.3 | 61 km WNW of Tyonek, Alaska | 13 km |
| 37d il y a | M0.5 | 53 km SW of Skwentna, Alaska | 36 km |
| 37d il y a | M1.2 | 35 km WNW of Beluga, Alaska | 29 km |
| 37d il y a | M-0.5 | 58 km WNW of Beluga, Alaska | 9.3 km |
| 37d il y a | M-0.6 | 56 km WNW of Beluga, Alaska | 9.9 km |
| 38d il y a | M1.1 | 30 km WNW of Tyonek, Alaska | 34 km |
| 38d il y a | M2.6 | 40 km SSW of Skwentna, Alaska | 50 km |
| 38d il y a | M0.5 | 56 km SSW of Skwentna, Alaska | 33 km |
| 38d il y a | M1.4 | 53 km WNW of Tyonek, Alaska | 17 km |
| 38d il y a | M1.4 | 32 km WNW of Beluga, Alaska | 32 km |
| 38d il y a | M1.6 | 30 km NW of Beluga, Alaska | 41 km |
| 38d il y a | M-0.3 | 58 km WNW of Beluga, Alaska | 9.7 km |
| 38d il y a | M-0.4 | 65 km WNW of Beluga, Alaska | 4.3 km |
| 38d il y a | M0.6 | 64 km W of Tyonek, Alaska | 19 km |
| 39d il y a | M-0.2 | 64 km WNW of Beluga, Alaska | 6.4 km |
| 39d il y a | M-0.4 | 57 km WNW of Beluga, Alaska | 9.4 km |
| 39d il y a | M-0.4 | 68 km WNW of Tyonek, Alaska | 4.2 km |
| 39d il y a | M-0.4 | 67 km WNW of Beluga, Alaska | 4.6 km |
| 39d il y a | M2.1 | 63 km WNW of Nikiski, Alaska | 40 km |
| 39d il y a | M-0.6 | 53 km WNW of Tyonek, Alaska | 12 km |
| 39d il y a | M0.1 | 72 km WNW of Beluga, Alaska | 7.9 km |
| 40d il y a | M-0.5 | 59 km W of Tyonek, Alaska | 15 km |
| 40d il y a | M0.8 | 66 km WNW of Tyonek, Alaska | 1.8 km |
| 40d il y a | M0.6 | 67 km WNW of Beluga, Alaska | 3.5 km |
| 40d il y a | M0.3 | 72 km WNW of Tyonek, Alaska | 14 km |
| 41d il y a | M0.5 | 60 km W of Tyonek, Alaska | 14 km |
| 41d il y a | M0.6 | 52 km WNW of Beluga, Alaska | 21 km |
| 41d il y a | M0.3 | 60 km W of Tyonek, Alaska | 30 km |
| 42d il y a | M-0.6 | 64 km WNW of Beluga, Alaska | 1.2 km |
| 42d il y a | M-0.5 | 66 km WNW of Beluga, Alaska | 2.4 km |
| 42d il y a | M1.2 | 46 km WNW of Beluga, Alaska | 20 km |
| 42d il y a | M-0.5 | 61 km WNW of Beluga, Alaska | 4.1 km |
| 42d il y a | M0.6 | 38 km NW of Beluga, Alaska | 35 km |
| 42d il y a | M-0.6 | 69 km WNW of Tyonek, Alaska | 5.5 km |
| 42d il y a | M-0.7 | 69 km WNW of Tyonek, Alaska | 5.9 km |
| 42d il y a | M-0.3 | 69 km WNW of Tyonek, Alaska | 4.9 km |
| 42d il y a | M-0.3 | 69 km WNW of Tyonek, Alaska | 4.5 km |
| 42d il y a | M1.6 | 39 km WNW of Beluga, Alaska | 27 km |
| 43d il y a | M-0.5 | 70 km WNW of Tyonek, Alaska | 6.1 km |
| 43d il y a | M0.4 | 64 km WNW of Nikiski, Alaska | 42 km |
Profil géologique et tectonique
StratovolcanLe Mont Spurr est un édifice actif de type Stratovolcan, formé dans un contexte actif : Zone de subduction / croûte continentale (> 25 km). Lithologie dominante : Andésite / Andésite basaltique.
Type d'édificeStratovolcan
Roche principaleAndésite / Andésite basaltique
TectoniqueZone de subduction
Arc volcaniqueArc volcanique Alaska Peninsula
Dossier du volcan
VN #313040Paramètres officiels du catalogue, coordonnées, altitude et classification géotectonique.
PaysÉtats-Unis
Coordonnées du cratère61.299°, -152.251°
Sommet3.4 km
Sous-régionArc volcanique Alaska Peninsula
Source du catalogueSmithsonian GVP (#313040)
Infrastructure Officielle de Surveillance
Télémétrie des essaims calculée sur 18 réseaux par rapport au bruit de fond de 30 jours.Comprendre la Physique et les Modèles →
Profil sismique régional
Alaska et arc des Aléoutiennes
Découvrez la surveillance sismique en direct, les références historiques de danger, les modèles de glissement des failles et les intervalles de récurrence pour Alaska et arc des Aléoutiennes.
Ouvrir le pôle régionalQuestions fréquentes (FAQ)
Protocoles scientifiques, opérationnels et d’urgence vérifiés
La dernière éruption du Mont Spurr enregistrée par le Global Volcanism Program de la Smithsonian remonte à 1992.
Catalogue : Smithsonian Institution, Global Volcanism Program.Fiche Smithsonian GVP