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Séisme modéré mag. 4.5 - Yerba Buena Island, 3.2 km au sud-est de Berkeley, Comté dAlameda County, Californie, États-Unis, jeudi, le 04 janvier 2018 10:39

Séisme modéré mag. 4.5 - Yerba Buena Island, 3.2 km au sud-est de Berkeley, Comté dAlameda County, Californie, États-Unis, jeudi, le 04 janvier 2018 10:39 Séisme modéré mag. 4.5 - Yerba Buena Island, 3.2 km au sud-est de Berkeley, Comté dAlameda County, Californie, États-Unis, jeudi, le 04 janvier 2018 10:39

Séisme modéré magnitude 4.5 à 13 km de profondeur

4 Jan 10:44 UTC: Premier à signaler: EMSC après 5 minutes.
Jan 4 10:46: Magnitude recalculée de 4.7 à 4.5.

Détails du séisme

Date et l'heure4 Jan 2018 10:39:36 UTC
Heure locale à l'épicentre
StatutConfirmé
Magnitude4.5
Profondeur13.0 km
Épicentre latitude / longitude37.86°N / 122.24°W (Comté dAlameda, Californie, États-Unis)
Antipode sismique37.86°S / 57.76°E
Intensité d'agitationSecousses modérées
Senti814 rapports
Source de données principaleEMSC (European-Mediterranean Seismological Centre)
Volcan le plus prèsClear Lake (132 km / 82 mi)
Lieux à proximité3 km ESE de Berkeley (pop: 121,000) | Carte | Séismes à proximité
7 km NNE de Oakland (pop: 419,300) | Carte | Séismes à proximité
10 km N de Alameda (pop: 78,600) | Carte | Séismes à proximité
13 km SE de Richmond (pop: 109,700) | Carte | Séismes à proximité
16 km OSO de Walnut Creek (pop: 68,900) | Carte | Séismes à proximité
17 km NNO de San Leandro (pop: 90,700) | Carte | Séismes à proximité
18 km ENE de San Francisco (pop: 864,800) | Carte | Séismes à proximité
65 km NNO de San José (pop: 1,026,900) | Carte | Séismes à proximité
103 km SO de Sacramento (pop: 490,700) | Carte | Séismes à proximité
Énergie sismique estimée libérée3.5 x 1011 joules (98.6 MWh, équivalent à 84.8 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.ProfondeurLieuSource
4.513 km SAN FRANCISCO BAY AREA, CALIF.EMSC
4.412 km- 2km SE of Berkeley, CAUSGS
shake map
(shakemap: USGS)

Seismograms

Seismic station: Columbia College, Columbia, CA, USA (CMB/BK network) | Distance from quake: 164 km / 102 mi | Show on map | Station Info
Seismic station Columbia College, Columbia, CA, 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. Source: IRIS Buffer of Uniform Data (BUD) webtool
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Témoignages pour ce séisme (1733)

Les rapports des utilisateurs estiment l'intensité perçue des secousses du sol en fonction de l' Échelle MMI (Modified Mercalli Intensity Scale).
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North Beach / Light shaking (MMI IV) : This is my first earthquake experience as I’m from Sydney, Australia. I was sleeping and was woken up by the shaking. It was confusing but not too alarming.  
North Beach / Light shaking (MMI IV) : This is my first earthquake experience as I’m from Sydney, Australia. I was sleeping and was woken up by the shaking. It was confusing but not too alarming.  
Livermore, Alameda, California (46 km ESE of epicenter) [Map] / Moderate shaking (MMI V) : Awoke as a result of strong shake in our livermore townhome at around 2:30am  
Concord, Ca (23.5 km ENE of epicenter) [Map] / Light shaking (MMI IV) : Strong jolt. scared the cat sleeping on the bed. (reported through our app)  
Fremont (42.2 km SSE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
San Rafael / Light shaking (MMI IV) : Woke up seconds before the actual quake. The couch and dishes were shaken and our Christmas tree was rattling.  
Santa Clara, California (57 km SSE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
94546 / Moderate shaking (MMI V)
Fremont (49.1 km SE of epicenter) [Map] / Moderate shaking (MMI V) : Rolling earthquake. Could hear the roar building before actually feeling movement. Had just sat down on the toilet at the start so sound and movement seemed amplified. The wave feeling seemed to linger for awhile.  
3880 brighton avenue, oakland, ca 94602 (6.2 km SSE of epicenter) [Map] / Light shaking (MMI IV) : We sustained no damage but the  
Los Gatos / Very weak shaking (MMI II)
Antioch (40.9 km ENE of epicenter) [Map] / Light shaking (MMI IV) : It awakened our me and my family. Mostly like a strong vibration shake (reported through our app)  
Concord,ca (23.5 km ENE of epicenter) [Map] / Light shaking (MMI IV) : Woke me up. (reported through our app)  
Oakland / Moderate shaking (MMI V) : About 30 minutes of of light rumbling.  
sebastopol / Light shaking (MMI IV) : At 2:40 am, my lazy boy c  
Larkspur, CA / Light shaking (MMI IV) : I felt it because it woke me up at 2:39 PST. It was the first one I've felt in nearly 7 years.  
Concord, CA / Moderate shaking (MMI V)
Pittsburg / Weak shaking (MMI III)
Richmond, CA / Light shaking (MMI IV)
Santa Clara (59.7 km SSE of epicenter) [Map] / Light shaking (MMI IV) : Felt the ground shaking while sleeping, the doors were shaking and could hear the sound of the ground shaking.  
San Bruno / Strong shaking (MMI VI) : Felt shaking for 5-10 seconds 2:39  
San Pablo (14.2 km NW of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Concord, ca / Light shaking (MMI IV)
Concord / Moderate shaking (MMI V) : Woke up to saking  
Financial Dietrich San Francisco / Moderate shaking (MMI V)
North Beach / Light shaking (MMI IV) : This is my first earthquake experience as I’m from Sydney, Australia. I was sleeping and was woken up by the shaking. It was confusing but not too alarming.  
Pacifica / Moderate shaking (MMI V)
Salinas, CA / Weak shaking (MMI III)
Palo Alto (51.7 km S of epicenter) [Map] / Light shaking (MMI IV) : Felt like it was between light to moderate shaking. Woke up to sound of things rattling and my bed shaking. On bbc 2nd floor of Defenders Lodge at VA center. (reported through our app)  
250 beach San fran / Strong shaking (MMI VI)
Menlo park, ca / Light shaking (MMI IV) : Jolts were repeated not just once House creaked loudly and repeatedly, bed jumping around  
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Earlier earthquakes in the same area

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