u.s. department of the interior earthquake summary … · 11/15/2006 · u.s. department of the...
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Russia
China
Japan
Mongolia
JapanNorth Korea
South Korea
JapanJapan
United States
Seoul
TokyoKobe
TaeguPusan
Osaka
Jilin
Sendai
Dalian
Anshan
Harbin
KwangjuFukuoka
Qingdao Inch`on
Sapporo
Qiqihar
Yokohama
Tangshan
Changchun
P'yongyang
Khabarovsk
Vladivostok
Cheju
Chita
Wonsan Aomori
Kanggye
Magadan
Yakutsk
Nagasaki
Ch'ongjin
Ch'unch'on
Birobidzhan
Blagoveshchensk
Yuzhno-Sakhalinsk
Petropavloski-Kamchatskiy
120°110°
130°
130°
140°
140°
150°
150° 160°
160°
170°
30°
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40°
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50°
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Map prepared by U.S. Geological SurveyNational Earthquake Information Center2006Map not approved for release by Director USGS
EARTHQUAKE SUMMARY MAP XXXU.S. DEPARTMENT OF THE INTERIORU.S. GEOLOGICAL SURVEY
DISCLAIMERBase map data, such as place names and politicalboundaries, are the best available but may not be current or may contain inaccuracies and thereforeshould not be regarded as having official significance.
M8.3 Kuril Islands Earthquake of 15 November 2006
Ku r i l -K amc h a t k a T r e n c h
A'
A
S e ao f
O k h o t s k
Iturup
Urup
Simushir
Onetokan
P a c i f i cO c e a n
1973
1969
19181994
19781958 1978
1978
1995 1963 1963
1978
19161991
1918
19131915
1900
146°
146°
148°
148°
150°
150° 152°
152°
154°
154°
156°
156°
158°
43°43°
45°45°
47°47°
49°49°
Epicentral Region
Seismotectonic Setting
Seismic Hazard
EURASIAPLATE
74 mm/year
92 mm/year
OKHOTSKPLATE
NORTH AMERICAPLATE
PACIFIC PLATE
AMUR PLATE
2003
Kuril-
Kamch
atka T
rench
88 mm/year
Japan
Trenc
h
Emperor Seamoun t
Russia
China
Japan
Russia
North Korea
South Korea
Japan
United States
Seoul
TokyoKobe
TaeguPusan
OsakaKyoto
Jilin
Sendai
Harbin
Fukuoka
Sapporo
Qiqihar
Yokohama
Changchun
P'yongyang
Khabarovsk
Vladivostok
Wonsan Aomori
Matsuyama
Ch'ongjin
Ch'unch'on
Birobidzhan
Blagoveshchensk
Yuzhno-Sakhalinsk
Petropavloski-Kamchatskiy
120°
130°
130°
140°
140°
150°
150° 160°
160°
170°
170°
180°
30°
40° 40°
50° 50°
30°
0 500 1,000 1,500 2,000250Kilometers
Scale 1:20,000,000
Scale 1:2,500,000
DISCUSSIONThe Kuril Islands earthquake of 15 November 2006, occurred as thrust-faulting on theboundary between the Pacific plate and the Okhotsk plate. In the region of theearthquake's epicenter, the Pacific plate moves northwest with respect to the Okhotsk platewith a velocity of about 90 mm/year. The Pacific plate subducts beneath the Okhotsk plateat the Kuril-Kamchatka Trench and becomes progressively deeper to the northwest,remaining seismically active to a depth of 680 km. The 15 November mainshock occurredat shallow depth within about 80 km of the trench axis.The 15 November earthquake is the largest earthquake to have occurred in the centralKuril Islands since the early 20th century. A central Kuril Islands earthquake in 1915 isestimated to have had a magnitude of about 8. The central Kuril Islands commonlyexperiences one or more shocks of magnitude 6 or greater in a decade. To the southwest,the southern Kuril Islands chain experienced a magnitude 8.5 earthquake in 1963. To thenortheast, a magnitude 9 earthquake occurred offshore of Kamchatka in 1952.
Significant Earthquakes Mag ≥ 7.5
Year Mn Dy Lat Long Dep Mag1900 1 31 48.000 146.000 450 7.51913 8 1 47.500 155.500 0 7.71915 5 1 47.500 154.500 35 7.91916 10 31 45.400 154.000 0 7.61918 9 7 46.812 150.253 242 7.61918 11 8 43.816 152.775 63 7.51958 11 6 44.329 148.623 35 8.41963 10 13 44.770 149.798 13 8.61963 10 20 44.772 150.563 27 7.91969 8 11 43.478 147.815 45 8.21973 6 17 43.223 145.743 43 7.81978 3 23 44.982 148.523 21 7.61978 3 23 44.359 149.113 8 7.51978 3 24 44.233 148.923 12 7.51978 12 6 44.455 146.475 181 7.81991 12 22 45.615 151.010 25 7.61994 10 4 43.945 147.224 14 8.31995 12 3 44.663 149.300 33 7.9
Seismic hazard is expressed as peakground acceleration (PGA) on firmrock, in meters/sec², expected to beexceeded in a 50-yr period with aprobability of 10 percent.
0 500 1,000 1,500 2,000250Kilometers
Scale 1:20,000,000
EXPLANATIONGlobal Seismic Hazard
0 - 0.2 cm/sec².2 - .4.4 - .8.8 - 1.61.6 - 3.23.2 - 6.46.4 - 9.8
-200
-200
-150
-150
-100
-100
-50
-50
0
0
50
50
100
100
150
150
-200 -200
-150 -150
-100 -100
-50 -50
Depth SectionA A'
DATA SOURCESEARTHQUAKES AND SEISMIC HAZARD USGS, National Earthquake Information Center NOAA, National Geophysical Data Center IASPEI, Centennial Catalog (1900 - 1999) and extensions (Engdahl and Villaseñor, 2002) HDF (unpublished earthquake catalog) (Engdahl, 2003) Global Seismic Hazard Assessment Program (GSHAP, 1999)PLATE TECTONICS PB2002 (Bird, 2003)BASE MAP ESRI (1992), Digital Chart of the World GLOBE (1999) IOC, IHO, and BODC (2003)
0 100 200 300 40050Kilometers
EXPLANATION
15 November 2006
AftershocksEarthquake Magnitude
4.50 - 4.995.00 - 5.996.00 - 6.997.00 - 7.998.00 - 8.99
Earthquake Depth0 - 65 km65 - 300300 - 600
Plate BoundarySubductionTransformDivergentConvergent
Finite Fault Model
REFERENCESBird, P., 2003, An updated digital model of plate boundaries: Geochem. Geophys. Geosyst., v. 4, no. 3, pp. 1027- 80.Engdahl, E.R. and Villaseñor, A., 2002, Global Seismicity: 1900 - 1999, chap. 41 of Lee, W.H.K., and others,eds.,International Earthquake and Engineering Seismology, Part A: New York, N.Y., Elsevier Academic Press, 932 p.Engdahl, E.R., Van der Hilst, R.D., and Buland, R.P., 1998, Global teleseismic earthquake relocation with improvedtravel times and procedures for depth determination: Bull. Seism. Soc. Amer., v. 88, p. 722-743.Environmental Systems Research Institute, Inc., 1992, 1993, Digital Chart of the World: ESRI, Data Dictionary andCDROM(4), Redlands, Calif., USA.GLOBE Task Team and others, 1999, The Global Land One-Kilometer Base Elevation (GLOBE) Digital ElevationModel, Version 1.0: National Oceanic and Atmospheric Administration, Boulder, Colo., USA.IOC, IHO, and BODC, 2003, Centenary Edition of the GEBCO Digital Atlas: CD-ROM(2), British OceanographicData Centre, Liverpool, UK.Ji, C., D.J. Wald, and D.V. Helmberger, Source description of the 1999 Hector Mine, California earthquake; Part I:Wavelet domain inversion theory and resolution analysis, Bull. Seism. Soc. Am., Vol 92, No. 4. pp. 1192-1207, 2002.
Bassin, C., Laske, G. and Masters, G., The Current Limits of Resolution for Surface Wave Tomography in NorthAmerica, EOS Trans AGU, 81, F897, 2000.
FINITE FAULT MODELContributed byC. Ji, California Institute of TechnologyDistribution of the amplitude and direction of slip forsubfault elements (small rectangles) of the fault rupturemodel are determined from the inversion of teleseismic bodywaveforms. Arrows indicate the amplitude and direction ofslip (of the hanging wall with respect to the foot wall); theslip amount is also color-coded as shown. The view is fromabove, per-pendicular to the fault plane.The orientation of the finite fault plane may differ from thecorresponding best double couple nodal plane depicted in thefocal mechanism diagram on the main map. This is due todifferent methods of analysis.The strike of the fault rupture plane is 214 (S 34 W) and thedip is 15°. The dimensions of the subfault elements are 20km in the strike direction and 12.5 km in the dip direction.
EXPLANATIONSlip, Finite Fault Model
0 - 100100 - 200200 -300300 -400400 -500500 -600600 -700700 - 800800 - 900
Kuril Islands, Russia15 November 2006 11:14:16 UTC46.616° N, 153.224° EDepth 28.5 kmMw = 8.3 (Harvard)A great earthquake occurred 495 km (305 miles) SSW ofSevero-Kuril'sk, Kuril Islands, Russia and 1665 km (1030 miles)NE of Tokyo, Japan, at 5:14 AM MDT, Nov 15, 2006 (10:14 PMlocal time in Russia). The magnitude and location may berevised when additional data and further analysis results areavailable.Felt at Misawa and Yokosuka, Japan and at Petropavlovsk-Kamchatskiy, Russia. At least three docks at Crescent City,California, were damaged by a tsunami with a measured waveheight of 1.8 m. Measured wave heights (peak-to-trough) of thetsunami: 0.60 m at Tokachi, 0.40 m at Nemuro and 0.20 m atKushiro, Japan; 1.52 m at Kahului, 1.14 m at Haleiwa, 0.99 m atWaianae, 0.99 m at Hilo, 0.89 m at Nawiliwili and 0.89 m atKalaupapa, Hawaii; 0.20 m at Shemya Island and 0.08 m atAmchitka Island, Alaska.
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