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Sismo minore mag. 3.0 - 27 km a sud da Skwentna, Borough di Matanuska-Susitna, Alaska, Stati Uniti, Monday, February 23, 2015 00:04:21

Sismo minore magnitudine 3.0 a 77 km di profondità

23 Feb 10:10 UTC: Primo a segnalare: USGS dopo 1 ora e 6 minuti.
Profondità ricalcolata da 77.9 a 77.1 km.

Dettagli del sismo

Data e ora	23 Feb 2015 09:04:21 UTC
Ora locale all'epicentro	Monday, February 23, 2015 00:04:21
Status	Confermato
Magnitudine	3
Prof.	77.1 km
Epicentro latitudine / longitudine	61.7582°N / 151.5155°W (Borough di Matanuska-Susitna, Alaska, Stati Uniti)
Antipodo	61.758°S / 28.485°E
Intensità di scuotimento	Non sentito
Sentito
Fonte dati primaria	USGS (United States Geological Survey)
Vulcano più vicino	Hayes (50 km / 31 mi)
Luoghi vicini	27 km SSO da Skwentna (pop: 37) \| Mappa \| Sismi nelle vicinanze 78 km O da Willow Creek (pop: 2,100) \| Mappa \| Sismi nelle vicinanze 87 km ONO da Big Lake (pop: 3,350) \| Mappa \| Sismi nelle vicinanze 91 km O da Houston (pop: 2,210) \| Mappa \| Sismi nelle vicinanze 98 km OSO da Susitna North (pop: 1,260) \| Mappa \| Sismi nelle vicinanze 105 km NO da Alaska City (pop: 298,700) \| Mappa \| Sismi nelle vicinanze 105 km ONO da Knik-Fairview (pop: 14,900) \| Mappa \| Sismi nelle vicinanze 111 km O da Wasilla (pop: 9,280) \| Mappa \| Sismi nelle vicinanze 114 km ONO da Eagle River (pop: 24,800) \| Mappa \| Sismi nelle vicinanze 114 km ONO da Eagle River (Anchorage) (pop: 24,800) \| Mappa \| Sismi nelle vicinanze
Meteo all'epicentro al momento del sismo
Energia sismica rilasciata stimata	2 x 10⁹ joules (554 kWh, equivalent to 0.477 tons of TNT) \| about seismic energy

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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.

Mag.	Prof.	Ubicazione	Fonte
3.0	77 km	78km W of Willow, Alaska	USGS

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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

User reports for this quake

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