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Séisme mineur mag. 3.0 - 27 km au sud de Skwentna, Arrondissement de Matanuska-Susitna, Alaska, États-Unis, Monday, February 23, 2015 00:04:21

Séisme mineur magnitude 3.0 à 77 km de profondeur

23 Feb 10:10 UTC: Premier à signaler: USGS après 1 heure et 6 minutes.
Profondeur recalculée de 77.9 à 77.1 km.

Détails du séisme

Date et l'heure	23 Feb 2015 09:04:21 UTC
Heure locale à l'épicentre	Monday, February 23, 2015 00:04:21
Statut	Confirmé
Magnitude	3
Profondeur	77.1 km
Épicentre latitude / longitude	61.7582°N / 151.5155°W (Arrondissement de Matanuska-Susitna, Alaska, États-Unis)
Antipode	61.758°S / 28.485°E
Intensité d'agitation	Pas ressenti
Senti
Source de données principale	USGS (United States Geological Survey)
Volcan le plus près	Hayes (50 km / 31 mi)
Lieux à proximité	27 km SSO de Skwentna (pop: 37) \| Carte \| Séismes à proximité 78 km O de Willow Creek (pop: 2,100) \| Carte \| Séismes à proximité 87 km ONO de Big Lake (pop: 3,350) \| Carte \| Séismes à proximité 91 km O de Houston (pop: 2,210) \| Carte \| Séismes à proximité 98 km OSO de Susitna North (pop: 1,260) \| Carte \| Séismes à proximité 105 km NO de Alaska City (pop: 298,700) \| Carte \| Séismes à proximité 105 km ONO de Knik-Fairview (pop: 14,900) \| Carte \| Séismes à proximité 111 km O de Wasilla (pop: 9,280) \| Carte \| Séismes à proximité 114 km ONO de Eagle River (pop: 24,800) \| Carte \| Séismes à proximité 114 km ONO de Eagle River (Anchorage) (pop: 24,800) \| Carte \| Séismes à proximité
Météo à l'épicentre au moment du séisme
Énergie sismique estimée libérée	2 x 10⁹ joules (554 kWh, équivalent à 0.477 tonnes de TNT) \| about seismic energy

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Données pour le même séisme indiquées par différentes agences

Info : Plus les agences signalent le même séisme et publient des données similaires, plus vous pouvez avoir confiance dans les données. Il faut normalement jusqu'à quelques heures pour que les paramètres sismiques soient calculés avec une précision quasi optimale.

Mag.	Profondeur	Lieu	Source
3.0	77 km	78km W of Willow, Alaska	USGS

Séismes les plus récents Top 20 dernières 24 heures Quakes in the US Alaska and Aleutian Islands

Seismograms

Seismic station: Skwentna, AK, USA (SKN/AK network) | Distance from quake: 25 km / 15 mi | Show on map | Station Info

Seismic station Skwentna, AK, USA: vertical movement plot around time of quake (source: IRIS/BUD)

Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.5-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

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Seismic station Skwentna, AK, USA: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Skwentna, AK, USA: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake, showing horizontal E-W and N-S ground movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Barrier Glacier, Mount Spurr, Alaska (SPBG/AV network) | Distance from quake: 72 km / 45 mi | Show on map | Station Info

Seismic station Barrier Glacier, Mount Spurr, Alaska: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Barrier Glacier, Mount Spurr, Alaska: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Barrier Glacier, Mount Spurr, Alaska: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Captain Cook Nikiski, AK, USA (CAPN/AK network) | Distance from quake: 112 km / 69 mi | Show on map | Station Info

Seismic station Captain Cook Nikiski, AK, USA: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Captain Cook Nikiski, AK, USA: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Captain Cook Nikiski, AK, USA: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Castle Rocks, AK, USA (CAST/AK network) | Distance from quake: 187 km / 116 mi | Show on map | Station Info

Seismic station Castle Rocks, AK, USA: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Castle Rocks, AK, USA: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Castle Rocks, AK, USA: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Poorman, AK, USA (J19K/AK network) | Distance from quake: 324 km / 201 mi | Show on map | Station Info

Seismic station Poorman, AK, USA: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Poorman, AK, USA: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Poorman, AK, USA: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Témoignages pour ce séisme

Les rapports des utilisateurs estiment l'intensité perçue des secousses du sol en fonction de l' Échelle MMI (Modified Mercalli Intensity Scale).

There are no user reports for this quake.

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