2003 Altai earthquake

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2003 Altai earthquake
2003 Altai earthquake is located in Russia
2003 Altai earthquake
UTC time 2003-09-27 11:33:25
ISC event 7136530
Local date September 27, 2003 (2003-09-27)
Local time 18:33
Magnitude 7.3 Mw [1]
Depth 12.3 km (8 mi) [1]
Epicenter 49°59′N 87°47′E / 49.99°N 87.79°E / 49.99; 87.79Coordinates: 49°59′N 87°47′E / 49.99°N 87.79°E / 49.99; 87.79 [1]
Type Oblique-slip [2]
Total damage $10.6–33 million [3][4]
Max. intensity X (Extreme) [3]
Landslides Yes [4]
Casualties 3 dead, 5 injured [3]

The 2003 Altai earthquake, or 2003 Chuya earthquake, occurred on September 27 at 18:33:26 local time with a moment magnitude of 7.3 and a maximum Mercalli intensity of X (Extreme). The epicenter of this oblique-slip shock was in Altai Republic, Russia near the borders of Mongolia, China, and Kazakhstan. Three deaths and five injuries were reported and the total damage was listed as $10.6–33 million.


This earthquake had components of right-lateral strike-slip and reverse movement in a segmented fault zone which had not been previously recognized.[5]


Between 99 and 300 houses destroyed, along with 1,942 other buildings affected. It was the strongest earthquake in this region since an estimated magnitude 7.7 earthquake on December 20, 1761.[3][4]

Ground effects[edit]

Landslides affected the Kosh-Agachsky and Ust’-Ulagan Districts.[4]


  1. ^ a b c ISC (2016), ISC-GEM Global Instrumental Earthquake Catalogue (1900–2012), Version 3.0, International Seismological Centre 
  2. ^ USGS (September 4, 2009), PAGER-CAT Earthquake Catalog, Version 2008_06.1, United States Geological Survey 
  3. ^ a b c d National Geophysical Data Center / World Data Service (NGDC/WDS), Significant Earthquake Database, National Geophysical Data Center, NOAA, doi:10.7289/V5TD9V7K 
  4. ^ a b c d USGS, M7.3 Respublika Altay, Russian Federation Earthquake of 27 September 2003 (PDF), United States Geological Survey 
  5. ^ Nissen, E.; Emmerson, B.; Funning, G. J.; Mistrukov, A.; Parsons, B.; Robinson, D. P.; Rogozhin, E.; Wright, T. J. (2007), "Combining InSAR and seismology to study the 2003 Siberian Altai earthquakes—dextral strike-slip and anticlockwise rotations in the northern India–Eurasia collision zone" (PDF), Geophysical Journal International, Wiley, 169 (1): 216–232, Bibcode:2007GeoJI.169..216N, doi:10.1111/j.1365-246X.2006.03286.x 

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