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Sismo leggero mag. 4.4 - North Pacific Ocean, 17 km a sud da Tateyama, Chiba, Giappone, lunedì, 13 set 2021 06:31 (GMT +9)

Sismo leggero mag. 4.4 - North Pacific Ocean, 17 km a sud da Tateyama, Chiba, Giappone, lunedì, 13 set 2021 06:31 (GMT +9) Sismo leggero mag. 4.4 - North Pacific Ocean, 17 km a sud da Tateyama, Chiba, Giappone, lunedì, 13 set 2021 06:31 (GMT +9)

Sismo leggero magnitudine 4.4 a 53 km di profondità

12 Sep 21:37 UTC: Primo a segnalare: NIED dopo 6 minuti.
Update Sun, 12 Sep 2021, 21:42

Moderate 4.4 quake hits near Tateyama, Tateyama-shi, Chiba, Japan

4.4 quake 13 Sep 6:31 am (GMT +9)
4.4 quake 13 Sep 6:31 am (GMT +9)
An earthquake of magnitude 4.4 occurred only 11 minutes ago 17 km south of Tateyama, Japan, Japan's National Research Institute for Earth Science and Disaster Resilience (NIED) reported.
The quake hit at a moderately shallow depth of 53.2 km beneath the epicenter near Tateyama, Tateyama-shi, Chiba, Japan, early morning on Monday, September 13th, 2021, at 6:31 am local time. 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.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.3 earthquake.
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 Tateyama (pop. 50,100) located 17 km from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Kamogawa (pop. 29,100) located 38 km from the epicenter, Miura (pop. 51,500) 40 km away, Yokosuka (pop. 429,000) 53 km away, Kimitsu (pop. 92,100) 58 km away, Kamakura (pop. 166,000) 60 km away, Kisarazu (pop. 122,500) 62 km away, Fujisawa (pop. 394,600) 67 km away, Yokohama (pop. 3,574,400) 70 km away, and Tokyo (pop. 8,336,600) 97 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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Dettagli del sismo

Data e ora12 Sep 2021 21:31:07 UTC
Ora locale all'epicentrolunedì, 13 set 2021 06:31 (GMT +9)
StatusConfermato
Magnitudine4.4
Prof.53.2 km
Epicentro latitudine / longitudine34.828°N / 139.842°E (North Pacific Ocean, Giappone)
Antipodo34.828°S / 40.158°W
Intensità di scuotimentoScuotimento molto debole
Sentito3 rapporti
Fonte dati primariaNIED (National Research Institute for Earth Science and Disaster Resilience)
Vulcano più vicinoOshima (42 km / 26 mi)
Luoghi vicini17 km S da Tateyama (pop: 50,100) | Mappa | Sismi nelle vicinanze
38 km SO da Kamogawa (pop: 29,100) | Mappa | Sismi nelle vicinanze
40 km SSE da Miura (pop: 51,500) | Mappa | Sismi nelle vicinanze
53 km SSE da Yokosuka (pop: 429,000) | Mappa | Sismi nelle vicinanze
58 km S da Kimitsu (pop: 92,100) | Mappa | Sismi nelle vicinanze
60 km SSE da Kamakura (pop: 166,000) | Mappa | Sismi nelle vicinanze
62 km S da Kisarazu (pop: 122,500) | Mappa | Sismi nelle vicinanze
67 km SSE da Fujisawa (pop: 394,600) | Mappa | Sismi nelle vicinanze
70 km SSE da Yokohama (pop: 3,574,400) | Mappa | Sismi nelle vicinanze
97 km S da Tokyo (pop: 8,336,600) | Mappa | Sismi nelle vicinanze
80 km NE da Shikine-jima Island (pop: 600) | Mappa | Sismi nelle vicinanze
212 km SE da Honshu Island (pop: 104,000,000) | Mappa | Sismi nelle vicinanze
Meteo all'epicentro al momento del sismoOvercast Clouds 25.1°C (77 F), humidity: 79%, wind: 3 m/s (5 kts) from NW
Energia sismica rilasciata stimata2.5 x 1011 joules (69.8 MWh, equivalent to 60 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.UbicazioneFonte
4.453 kmJapan: SE OFF BOSO PENINSULANIED
4.350 kmNEAR S. COAST OF HONSHU, JAPANEMSC

Seismograms

Seismic station: Shizuoka Sagara (JSG/JP network) | Distance from quake: 152 km / 95 mi | Show on map | Station Info
Seismic station Shizuoka Sagara: 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: 0.2-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (5)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Mercure Yokosuka (53 km NNW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 20-30 s
Yokohama, Kanazawa (61.7 km NNW of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / 2-5 s : Felt short bumps twice, while in bed  
Tokyo / not felt (reported through our app)
Tokyo / not felt (reported through our app)
Oppama / Light shaking (MMI IV) / rattling, vibrating / 15-20 s : Slow shaking (reported through our app)  

Earlier earthquakes in the same area

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