Map prepared by U.S. Geological SurveyNational Earthquake Information Center18 June 2008Map 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.

J a p a nB a s i n

Hokkaido

JAP A

N T R

E NC H

2003

Kinki

Kanto

Chubu

Tohoku

Hokkaido

Gifu

Aomori

Osaka

Kyoto Nagoya

Yokohama

Sendai

Sapporo

Tokyo

1968

1952

1944

1933

1995

1994

19931993

1989

1984

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1981

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19091909

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19061906

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19011901

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SHINGUTANABE

GoboOwaseKAINAN

KOYASANWAKAYAMA

HashimotoFUKE IZUMI-

SANO

NAGANOKISHIWADA ISESAKURAI MATSUZAKAKOKUBU

OSAKAAKASHIKOBE NARA

ARAITOYOHAMATSU HAMAMATSU

TOYOHASHI MATSUZAKIUENO

KAKEOAWATOYONAKAIKEDAMIKISHIMADAAKUTAGAWA

Seki YAIZUNISHIOFUJIEDASanda

TOKONAMEHANDACHIKURA

OKAZAKIYOKKAICHI ITOSHIZUOKA TATEYAMA

KARIYAOTSU

KYOTO HINO SHIMIZUKUSATSUSASAYAMA TOYOTAATAMINUMAZU Kamogawa

KATADAMISHIMA Misaki

NAGOYA YOSHIWARAECHIGAWA SETO FUJINOMIYA OHARAODAWARA YOKOSUKA

HIKONE OKOSHIFUKUCHIYAMA FUJISAWAHIRATSUKATAJIMIOGAKI KISARAZU

GIFUMOBARAMAIZURU

OIHIGASHI-MAIZURU

SEKI FUJI-YOSHIDA

KINOMOTO IIDAKATAKAI

MiyazuMinoIWATAKI AOYAGI CHIBANARUTOKOFU HACHIOJIAMINO

TOKYOENZAN

SAKURA AsahiYokaichiba

AKAHO TAKO CHOSHIHACHIMAN ICHIKAWA

HANNO OMIGAWATAKEFU RyugaskiOMIYAKAWAGOE NODASABAE ChinoSUWAFUKUI OKAYOTAKAYAWA IshiokaKUMAGAYA KOGA

MATSUMOTOFURUKAWA Tomioka ISEZAKI SHIMODATETAKASAKIFUNATSU ASHIKAGAKARUIZAWA

KasamaMAEBASHIKOMATSU UEDA KIRYU KUJIOmachi UTSUNMIYAMATSUSHIRO

KANAZAWA FUKUNO HITACHINumataSUZAKANAGANO KARASUYAMAISURUGI TOYAMATAKAOKA

NikkoTAKAMATSU FUSHIKI UOZU LiyamaHIMI UEDA ONAHAMATAIRANANAO TAKADA ShirakawaTOGI

KASHIWAZAKI KORIYAMANAGAOKA WAKAMATSUSANJO

Kamo GosenFUKUSAIMAMAKI NIITSU

KAMEDAYONEZAWANIIGATA SHIBATA

Murakami YAMAGATA SENDAISHIOGAMA ISHINOMAKI

WAKUYAFURUKAWA

SANUMATSURUOKA Shinjo

SAKATA ICHINOSEKI

MIZUSAWAKAMAISHI

HANAMAKI

MIYAKOMORIOKAAKITA

NOSHIRO ODATE

HACHINOHEHIROSAKI Sambongi

AJIGASAWAAOMORI

NOHEJI

HAKODATE

MURORANDATE

TOMAKOMAI

CHITOSEKUTCHAN SHIRANUKA

KUSHIROIWANAI KURIYAMASAPPORO YUBARI

144°

144°

142°

142°

140°

140°

138°

138°

136°

136°

42° 42°

40° 40°

38° 38°

36° 36°

34° 34°

K U R I L -

K AM C H ATK A TR E N C H

J A PAN

T RE N

C H

IZ U T R E NCH

N A N S E I - S

H O TO ( RY U K Y U ) T

R E N C H

OKHOTSKPLATE

AMUR PLATE

OKINAWAPLATE

PACIFIC PLATEE A S T

C H I N AS E A

Y E L L O WS E A

S E A O F J A P A N

Kuril Is la

nds

J A P A N

N O R T HK O R E A

S O U T HK O R E A

N o r t h w e s tP a c i f i cB a s i n

S h at s

k y R

i se

K u r i l B a s i n

J a p a nB a s i n

CHINABirobidzhan

Gifu

Shimonoseki

Naha

NagasakiCheju Matsuyama

Ch'ungjuCh'unch'on

KaesongHaeju

HamhungSinuijuAomoriKanggye

Ch'ongjin

Yuzhno-Sakhalinsk

Blagoveshchensk

TaeguKwangjuPusan

Taipei

Hangzhou

FukuokaKitaKyushu

HiroshimaOsaka

KobeKyoto

Nagoya YokohamaKawasakiChonju

Qingdao TaejonInch`on

SendaiP'yongyangDalian

Anshan ShenyangFushunSapporoVladivostokJilin

Changchun

Harbin

QiqiharKhabarovsk

Seoul

Shanghai

Tokyo

160°

160°

150°

150°

140°

140°

130°

130°

50° 50°

40° 40°

30° 30°

M6.9 Northern Honshu, Japan Earthquake of 13 June 2008

0 200 400100Kilometers

Birobidzhan

Gifu

Shimonoseki

NagasakiCheju Matsuyama

Ch'ungjuCh'unch'on

KaesongHaejuWonsan

HamhungSinuijuAomoriKanggye

Ch'ongjin

Yuzhno-Sakhalinsk

Blagoveshchensk

TaeguKwangju Pusan

Fukuoka KitaKyushu

Hiroshima Osaka KobeKyoto Nagoya YokohamaKawasakiChonju

TaejonInch`on

SendaiP'yongyangDalian

AnshanShenyang Fushun

SapporoVladivostokJilinChangchun

Harbin

QiqiharKhabarovsk

Seoul

Shanghai

Tokyo

160°

160°

150°

150°

140°

140°

130°

130°

50° 50°

40° 40°

30° 30°

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 ProgramPLATE TECTONICS AND FAULT MODEL PB2002 (Bird, 2003) Finite Fault Model, Chen Ji, UC Santa Barbara (2007)BASE MAP NIMA and ESRI, Digital Chart of the World USGS, EROS Data Center NOAA GEBCO and GLOBE Elevation Models

0 400 800 1,200 1,600200Kilometers

Scale

Prepared in cooperation

with the Global Seismographic

Network

Tectonic Setting

Seismic Hazard

Epicentral Region

Honshu Earthquake 13 June 2008 23:42:46 UTC 39.122° N., 140.678° E.Depth 10 kmMw = 6.9 (USGS) An earthquake occurred about 85 km (50 miles) SSE of Akita, Honshu, Japan or about 100 km (60 miles) NNW of Sendai, Honshu, Japan or about 390 km (240 miles) N of TOKYO, Japan at 5:43 PM MDT, Jun 13, 2008 (Jun 14 at 8:43 AM local time in Japan). Shaking was felt over a wide region. Ten deaths and 236 injuries were reported.

TECTONIC SUMMARYThe Mw 6.9 Honshu earthquake of June 13th2008 occurred in a region of convergencebetween the Pacific Plate and the Okhotsksection of the North American Plate in northernJapan, where the Pacific plate is moving west-northwest with respect to North America at arate of approximately 8.3 cm/yr. The hypocenterof the earthquake indicates shallow thrustingmotion in the upper (Okhotsk) plate, abovethe subducting Pacific plate, which lies atapproximately 80 km depth at this location.The earthquake occurred in a region of upper-plate contraction, probably within the complicat-ed tectonics of the Ou Backbone Range,known to have hosted several large earth-quakes in historic times. The largest of theseevents occurred in 1896, approximately 70kmnorth of the June 13th event, and killed over200 people in the local area.

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.

EXPLANATIONMain Shock M6.8

Mag ≥ 7.00 - 69 km70 - 299300 - 600

Plate BoundariesSubductionTransformDivergent

ConvergentVolcanoes

RELATIVE PLATE MOTIONSPlate boundary symbols indicate thegeneral pattern of relative plate motion.The Pacific Plate, however, is movingwest-northwest relative to the OkhotskPlate at approximately 8.3 cm/yr.

0 400 800 1,200 1,600200Kilometers

Scale

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 Academeic Press, 932 p.Engdahl, E.R., Van der Hilst, R.D., and Buland, R.P., 1998, Global teleseismic earthquake relocation with improved trav- el times and procedures for depth determination: Bull. Seism. Soc. Amer., v. 88, p. 722-743.

Scale 1:4,000,000

Finite Fault Modelfor M6.8 Earthquake

Significant Earthquakes Mag >= 7.5

Year Mon Day Time Lat Long Dep Mag1896 08 31 1706 39.500 140.700 0 7.21901 08 09 1833 40.600 142.300 35 7.51906 01 21 1349 34.000 137.000 350 7.71909 03 13 1429 34.500 141.500 35 7.61915 11 01 0724 38.300 142.900 35 7.51923 09 01 0258 35.405 139.084 35 7.91923 09 02 0246 34.900 140.200 35 7.61931 03 09 0348 40.484 142.664 35 7.71933 03 02 1731 39.224 144.622 35 8.41938 05 23 0718 36.458 141.755 35 7.71938 11 05 0843 37.009 142.045 35 7.91938 11 05 1050 37.108 142.081 35 7.81938 11 06 0853 37.287 142.283 35 7.71944 12 07 0435 33.750 136.000 0 8.11952 03 04 0122 42.500 143.000 0 8.11953 11 25 1748 34.034 141.786 35 7.91960 03 20 1707 39.871 143.435 2.1 7.81964 06 16 0401 38.434 139.226 13.1 7.51968 05 16 0049 40.903 143.346 25.8 8.31968 05 16 1039 41.593 142.786 11.8 7.81978 06 12 0814 38.224 142.009 53.3 7.71983 05 26 0300 40.468 139.080 20 7.71993 01 15 1106 43.022 144.124 102 7.61993 07 12 1317 42.883 139.225 20.4 7.71994 12 28 1219 40.530 143.403 29.2 7.8

Peak Ground Acceleration in m/sec**2

.2 .4 .8 1.6 2.4 3.2 4.0 4.8

S e a o f J a p a n

EPICENTRAL REGION

P a c i f i c O c e a n

EXPLANATIONEarthquake Magnitude

5.50 - 5.996.00 - 6.997.00 - 7.998.00 - 8.99

9.00 - 9.99

Earthquake Depth0 - 6970 - 299300 - 700

FINITE FAULT MODELContributed byGavin Hayes, NEIC and ChenJi, University of California atSanta BarbaraDistribution of the amplitudeand direction of slip forsubfault elements (smallrectangles) of the fault rupturemodel are determined from theinversion of teleseismic bodywaveforms. Arrows indicatethe amplitude and direction ofslip (of the hanging wall withrespect to the foot wall); theslip amount is also color-codedas shown. The view of therupture plane is from above.The strike of the fault ruptureplane is N25E and the dip is49.67 NW. The dimensions ofthe subfault elements are 3 kmin the strike direction and 2 kmin the dip direction. Theseismic moment releasedbased on the plane is 2.466E+26 dyne.cm.

1:20,000,000

1:20,000,000

EPICENTRAL REGION

Did You Feel It?

Distan

ce al

ong s

trike 2

05° (N

155°

W) (k

m)

Distance downdip (km)

Dip 49.67° Northwest 0

-22

0

-19

23

Slip (cm)0 - 5050 - 100100 - 150150 - 200200 - 250250 - 300300 - 350350 - 400400 - 450450 - 500500 - 550