2003 Tokachi earthquake

2003 Hokkaidō earthquake
平成15年（2003年）十勝沖地震 (Heisei15-nen (2003-nen) Tokachi-Oki Jishin)
Oil tank fire in Tomakomai
2003 Tokachi earthquake is located in Hokkaido
2003 Tokachi earthquake
Kushiro
Kushiro
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Map showing the epicenter of the mainshock
UTC time2003-09-25 19:50:06
ISC event7134409
USGS-ANSSComCat
Local date26 September 2003
Local time04:50
Magnitude8.3 Mw[1]
Depth27 km (17 mi)
Epicenter41°47′N 143°52′E / 41.78°N 143.86°E / 41.78; 143.86
TypeMegathrust
Areas affectedJapan
Total damage¥213 billion (US$1.9 billion)[2] (Damage to fishing ports, agriculture, and infrastructure)
Max. intensityMMI IX (Violent)[3]

JMA 6−
Peak acceleration1.11 g
1091 Gal
TsunamiYes (4.0 m)
LandslidesYes
Aftershocks65+ (max 7.4 Mw)
Casualties1 dead (indirect), 849 injured, 2 missing[4]

The 2003 Hokkaidō earthquake, scientifically named the 2003 Tokachi-Oki earthquake (平成15年十勝沖地震, Heisei jūgo-nen Tokachi-Oki jishin), occurred off the coast of Hokkaidō, Japan on 26 September at 04:50 local time (19:50 UTC 25 September). At a focal depth of 27 km (17 mi), this great undersea earthquake measured 8.3 on the moment magnitude scale, making it the most powerful earthquake of 2003, as well as one of the most intense earthquakes to hit Japan since modern record-keeping began in 1900.

The Hokkaido earthquake caused extensive damage, destroying roads all around Hokkaidō, and triggered power outages and extensive landslides.[1] Over 800 people were injured.[5] The earthquake also caused a tsunami reaching 4 meters in height.[6] The earthquake's presence was felt throughout Japan, stretching all the way to Honshu and Tokyo.[1]

  1. ^ a b c "2003 Hokkaido earthquake". United States Geological Survey. 3 October 2003. Archived from the original on 2008-08-28. Retrieved 2008-07-12.
  2. ^ Cite error: The named reference yen was invoked but never defined (see the help page).
  3. ^ Kenji Hirata; Yuichiro Tanioka; Kenji Satake; Shigeru Yamaki; Eric L. Geist (2004). "The tsunami source area of the 2003 Tokachi-oki earthquake estimated from tsunami travel times and its relationship to the 1952 Tokachi-oki earthquake". Earth, Planets and Space. 56 (3): 367–372. Bibcode:2004EP&S...56..367H. doi:10.1186/BF03353066. S2CID 55586940.
  4. ^ Cite error: The named reference mlit was invoked but never defined (see the help page).
  5. ^ S. F. A. Rafeeqi and S. H. Lodi (April 2004). "Earthquakes Cause Damages in Pakistan, Iran, Japan and Morocco" (PDF). Cowasjee Earthquake Study Centre. Archived from the original (PDF) on October 4, 2006. Retrieved May 20, 2012.
  6. ^ "List of 2003 tsunamis". International Tsunami Information Center. 2005. Archived from the original on 2012-02-13. Retrieved 2008-07-12.