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Séisme modéré mag. 4.8 - Océan Pacifique Nord, 20 km au sud-est de Kashima-shi, Japon, dimanche, 18 sept. 2022 11:09 (GMT +9) -

Séisme modéré mag. 4.8 - Océan Pacifique Nord, 20 km au sud-est de Kashima-shi, Japon, dimanche, 18 sept. 2022 11:09 (GMT +9) Séisme modéré mag. 4.8 - Océan Pacifique Nord, 20 km au sud-est de Kashima-shi, Japon, dimanche, 18 sept. 2022 11:09 (GMT +9)

Séisme modéré magnitude 4.8 à 47 km de profondeur

18 Sep 02:12 UTC: Premier à signaler: VolcanoDiscovery après 2 minutes.
18 Sep 02:16: Maintenant en utilisant une nouvelle source de données: NIED
... [show all] ...
19 Sep 03:02: Profondeur recalculée de 46.8 à 46.7 km (de 29 à 29 mi).
Update Sun, 18 Sep 2022, 02:33

Magnitude 4.7 earthquake strikes near Kashima-shi, Ibaraki, Japan

4.7 quake 18 Sep 11:09 am (GMT +9)
4.7 quake 18 Sep 11:09 am (GMT +9)
A moderately shallow magnitude 4.7 earthquake was reported in the morning near Kashima-shi, Ibaraki, Japan.
According to Japan's National Research Institute for Earth Science and Disaster Resilience (NIED), the quake hit on Sunday, September 18th, 2022, at 11:09 am local time at a moderately shallow depth of 38.9 km. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
Our monitoring service identified a second report from the citizen-seismograph network of RaspberryShake which listed the quake at magnitude 5.0. Other agencies reporting the same quake include the German Research Centre for Geosciences (GFZ) at magnitude 5.0, the European-Mediterranean Seismological Centre (EMSC) at magnitude 4.8, and France's Réseau National de Surveillance Sismique (RéNaSS) at magnitude 5.0.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Omigawa (pop. 25,800) located 3 km from the epicenter, Itako (pop. 25,800) 9 km away, Kashima-shi (pop. 65,800) 10 km away, Sawara (pop. 47,200) 10 km away, Katori-shi (pop. 83,200) 11 km away, Нарита (pop. 100,600) 29 km away, Ryūgasaki (pop. 85,800) 39 km away, and Mito (pop. 246,500) 55 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Tokyo (pop. 8,336,600) located 86 km from the epicenter, and Yokohama (pop. 3,574,400) 100 km away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.

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Détails du séisme

Date et l'heure18 Sep 2022 02:09:46 UTC -
Heure locale à l'épicentredimanche, 18 sept. 2022 11:09 (GMT +9)
StatutConfirmé
Magnitude4.8
Profondeur46.7 km
Épicentre latitude / longitude35.8282°N / 140.7854°E (Océan Pacifique Nord, Japon)
Antipode sismique35.828°S / 39.215°W
Intensité d'agitationSecousses faibles
Senti7 rapports
Source de données principaleUSGS (United States Geological Survey)
Volcan le plus prèsTakahara (149 km / 93 mi)
Lieux à proximité11 km NNO de Hasaki (pop: 39,200) | Carte | Séismes à proximité
17 km NE de Asahi (pop: 41,700) | Carte | Séismes à proximité
20 km SE de Kashima-shi (pop: 65,800) | Carte | Séismes à proximité
26 km ESE de Sawara (pop: 47,200) | Carte | Séismes à proximité
27 km ESE de Katori-shi (pop: 83,200) | Carte | Séismes à proximité
43 km E de Narita (pop: 100,600) | Carte | Séismes à proximité
100 km E de Tokyo (pop: 8,336,600) | Carte | Séismes à proximité
102 km ENE de Kawasaki (pop: 1,306,800) | Carte | Séismes à proximité
220 km NE de Shikine-jima Island (pop: 600) | Carte | Séismes à proximité
320 km SE de Sado Island (pop: 55,200) | Carte | Séismes à proximité
Météo à l'épicentre au moment du séismeBroken Clouds 29.3°C (85 F), humidity: 82%, wind: 8 m/s (16 kts) from SSE
Énergie sismique estimée libérée1 x 1012 joules (278 MWh, équivalent à 239 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
4.847 km11 Km NNW of Hasaki, JapanUSGS
5.010 kmJapan: Near TokyoRENASS
4.860 kmNEAR EAST COAST OF HONSHU, JAPANEMSC
5.056 kmNear East Coast of Honshu, JapanGFZ
4.847 kmNear East Coast of Honshu, JapanRaspberryShake
4.810 kmNear East Coast Of Honshu, JapanIRIS
4.739 kmJapan: SOUTHERN IBARAKI PREFNIED
5.052 kmNear East Coast of Honshu, JapanGeoAu

Seismograms

Seismic station: Matsushiro, Japan (MAJO/IU network) | Distance from quake: 245 km / 152 mi | Show on map | Station Info
Seismic station Matsushiro, Japan: 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 (7)

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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Ishioka, Ibaraki (60.1 km NW of epicenter) [Map] / Very weak shaking (MMI II) : Sitting on chair, noticed small shaking | One user found this interesting.  
hitachinaka (67 km NNW of epicenter) [Map] / Weak shaking (MMI III) : minimal shaking | One user found this interesting.  
Narita airport / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Light shaking | One user found this interesting.  
Narita (39.2 km W of epicenter) [Map] / Weak shaking (MMI III)
Narita, Japan (39.5 km W of epicenter) [Map] / Weak shaking (MMI III)
Narita / Weak shaking (MMI III) / horizontal (sideways) swinging / 5-10 s
Narita / Light shaking (MMI IV) / rattling, vibrating / 10-15 s

Earlier earthquakes in the same area

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