Ver.6 Final Report 2020-02-01 02:07 (UTC+9), SOUTHERN IBARAKI, 70Km Depth, M 5.3 By

Updated: 2020-02-01 02:19:07 (UTC+9) Ver.6 Final Report

2020-02-01 02:07 (UTC+9), SOUTHERN IBARAKI, 70km Depth, M 5.3 by JMA

Is Distribution Maximum Observed Is:4 Estimated Is for Major Cities

Histogram Max. Nighttime Distance of Estimated Is Municipality Obs. Is Population [km] 1 2 3 4 5-5+6-6+7 4 Motegi,Haga,Tochigi 15,000 59 4 Tsukuba,Ibaraki 210,000 4 3 Koto,Tokyo 460,000 44 3 Mito,Ibaraki 270,000 52 3 Kasukabe,Saitama 240,000 31 3 Kawaguchi,Saitama 560,000 40 3 Utsunomiya,Tochigi 510,000 64 3 Adachi,Tokyo 680,000 36 3 Funabashi,Chiba 610,000 35 3 Kita,Tokyo 340,000 42 3 Edogawa,Tokyo 680,000 38 3 Matsudo,Chiba 480,000 29 3 Sumida,Tokyo 250,000 41 3 Asahi,Yokohama,Kanagawa 250,000 76 3 Kashiwa,Chiba 400,000 18 3 Soka,Saitama 240,000 32 3 Itabashi,Tokyo 540,000 44 3 Nerima,Tokyo 710,000 49 3 Ota,Tokyo 690,000 59 S eism ic In ten sity (Is) d istrib u tio n is estim ated f ro m th e o b served d ata (c irc les) o f N IED K-N ET, KiK-n et, JM A, an d lo c al g o vern m en ts th at h ad b een 3 Suginami,Tokyo 550,000 53 c o llec ted b y 20 20 /0 2/0 1 0 2:18 :13. Th e h isto g ram sh o ws f req u en c y d istrib u tio n o f estim ated Is d erived f ro m in terp o latio n o f th e o b servatio n with 250 -m m esh . Th e d aytim e an d n ig h ttim e c o rresp o n d to 9:0 0 -18 :59 an d 19:0 0 -8 :59, resp ec tively. Th e d istan c e is m easu red f ro m th e ep ic en ter to th e c en ter o f th e m u n ic ip ality.

Is Exposed-Population Estimates of Each City

5- or greater 5+ or greater

Not Available Not Available Population exposed to Is 5- or greater are not estimated.

6- or greater 6+ or greater

Not Available Not Available

Major Historical Damaging Earthquakes in This Region Seismic Hazard Information of J-SHIS

Year Region M Damage J-SHIS is a Web service by NIED, to help prevent and prepare for earthquake Ryugasaki Earthquake,Minor damage in Chiba and Ibaraki such as damage to 1921 Southern Ibaraki 7.0 disaster by providing a public portal for seismic hazard information across Japan. houses and roads. West coast, Uragasuido Earthquake,1 dead in Tokyo, 1 dead in Yokohama, Kanagawa. Houses Is Distribution of 2% Probability of Is Distribution of Return Period of 50,000- 1922 6.8 Chiba were damaged. Exceedance in 50 Years year Kanto Earthquake,The maximum amplitude of 14-20 cm was observed in Tokyo. Over 105,000 dead or missing, over 109,000 houses collapsed, 102,000 partially Western 1923 7.9 destroyed, over 212,000 destroyed by fire. Many landslides. Tsunamis struck the Kanagawa coast of Kanto. Wave heights were 12 m in Atami, Sizuoka; 9.3 m in Aihama, Chiba. Northern Nishi Saitama Earthquake,16 dead, 207 collapses (76 houses and 131 non- 1931 6.9 Saitama residential houses). Imaichi Earthquake,10 dead, 290 houses collapsed, 2,994 partially destroyed, 618 1949 Northern Tochigi 6.2 non-residential houses collapsed. Many masonries were damaged. Many landslides were observed. 2 dead, 161 injured in Chiba. 16 houses collapsed and over 70,000 partially 1987 E Off Chiba 6.7 destroyed. Many roads damaged. The crustal earthquake with normal faults, induced by the 2011 off the Pacific Hamadori, 2011 7.0 Coast of Tohoku Earthquake. 4 dead, 10 injured (as of March 2016). Maximum Is Fukushima was 6-. The crustal earthquake with normal faults, induced by the 2011 off the Pacific 2012 E Off Chiba 6.1 Coast of Tohoku Earthquake. 1 dead, 1 injured. Maximum Is was 5+. R ef eren c e: N atio n al Astro n o m ic al O b servato ry o f Jap an , C h ro n o lo g ic al S c ien tif ic Tab les, M aru zen , (20 17) *p artially extrac ted