Knowledge (XXG)

Tōkai earthquakes

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the Tokai Earthquake bulletins to allow emergency measures for earthquake disaster prevention. These are categorized into three types: Investigation Report on Tokai Earthquake Prediction, Tokai Earthquake Watch, and Explanatory Information on Tokai Earthquake Warning. Each report indicates the level of danger using a color code of blue, yellow and red.
94:, 7. Emergency planners are anticipating and preparing for potential scenarios after such an earthquake, including the possibility of thousands of deaths and hundreds of thousands of injuries, millions of damaged buildings, and cities that include Nagoya and Shizuoka devastated. Concern has been expressed over the presence of the 153:
with predicting the next one. There is now a dense array of instruments placed to accumulate a continuous stream of data related to seismicity, strain, crustal expansion, tilt, tidal variations, ground water fluctuations and other variables. They are watching for an anomaly in this data which might
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To support predictions, JMA has developed a seismic and crustal deformation observation network covering the region in conjunction with related organizations, and observes related data around-the-clock basis. After monthly assessments, or when anomalous data are detected, JMA issues Information on
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On all but one occasion, rupture of segment C (±D ±E) has been followed by rupture of segments A+B within a few years. This behavior has been reproduced by modeling the viscoelastic response of the megathrust fault plane with lateral variations in both convergence rate and frictional properties.
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The pattern of historical seismicity reveals that the megathrust surface is segmented, with five separate zones of rupturing identified, conventionally labeled A–E, from west to east. Earthquakes involving the A+B segments are generally referred to as
117:. The reports stated that if a 9.0 earthquake occurred on the Nankai Trough, the effects would be very serious. The quake itself would likely kill thousands, and a series of 34-meter (112-foot) tall tsunamis would impact areas from the 220:
to support the prediction of its occurrence. As pre-slip may be too slight to be detected by the observation systems currently in place, it is not possible to say that the Tokai Earthquake will be predicted without fail.
365:. If the Committee concludes that the Tokai Earthquake is imminent, the Director-General of JMA will report this conclusion to the Prime Minister, who will then hold a Cabinet meeting and issue a warning statement ( 145:
with a magnitude of around 8. The Tokai region will be subjected to extremely strong shaking with seismic intensity of 6-lower or greater, and huge tsunamis are expected to hit the Pacific coast in the region.
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Information on future quakes is published irregularly. Since November 2017, this information limited to Tokai earthquakes has not been announced, and "Information on the Nankai megathrust earthquake (
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To determine whether anomalous phenomena are precursors to the Tokai Earthquake, JMA convenes the Earthquake Assessment Committee for Areas under Intensified Measures against Earthquake Disaster (
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Shortly after the 2011 Tōhoku earthquake, new reports were released which indicated the significant likelihood of another magnitude 9 earthquake occurring elsewhere in Japan, this time on the
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As serious damage from strong shaking and huge tsunamis is expected, the Japanese government has designated this region as Areas under Intensified Measures against Earthquake Disaster.
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erupted 49 days after this earthquake and the Hōei crater was created. About 20,000 people were killed and 60,000 houses collapsed, the Tosa area was affected by the tsunami.
91: 1014: 161:(CCEP) designated the Tōkai region as an Area of Specific Observation in 1970, and upgraded it to an Area of Intensified Observation in 1974. Following the passing of the 718: 158: 1101: 162: 1566: 1750: 937: 1646: 912: 1159: 1581: 103: 598: 754: 286: 258: 1551: 547: 1094: 74:. The Tōkai segment has been struck by earthquakes in 1498, 1605, 1707, and 1854. Given the historic regularity of these earthquakes, 1219: 107: 1485: 1025: 157:
Following the prediction of an earthquake in the relatively near future, and in order to try to predict when it would occur, the
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Hirahara, K.; Kato N.; Miyatake T.; Hori T.; Hyodo M.; Inn J.; Mitsui N.; Sasaki T.; Miyamura T.; Nakama Y.; Kanai T. (2004).
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in 1969 pointed out that another great shallow earthquake was possible in the "near future" (i.e., in the next few decades).
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ranged from Suruga Bay to the deep ocean, and struck primarily in the Tōkai region, but destroyed houses as far away as
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The shaking caused by an earthquake is not the same as, and not totally determined by, the energy released. See
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Given the magnitude of the last two earthquakes, the next is expected to have at least a magnitude scale of 8.0
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When it is considered that the Tokai Earthquake may occur and the prime minister issues a warning declaration (
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When there is increased likelihood that an observed phenomenon is a precursor to the Tokai Earthquake.
1052:(大江戸歴史百科, "Historical Encyclopedia of Great Edo"). Tokyo: Kawade Shobō Shinsha Publishers, 2007. p253. 1681: 1676: 1561: 1169: 1048:
Kawade Shobō Shinsha Editorial Team (eds.). "Ansei Daijishin" (安政大地震, "Great Earthquakes of Ansei").
683: 614:, 1,500 people died in Shishikui Awa, 350 deaths in Tosa Nishinoura, and 400 in the vicinity of Cape 606:
The tsunami struck from the Pacific coast of Kyushu, Miyazaki, led to the deaths of 57 on the island
398:) earthquakes. These earthquakes repeat at intervals generally in the range of 90 – 200 years. 270:
Response warning declaration from the prime minister and local-government disaster management plans.
916: 1365: 1259: 847: 695: 126: 792: 1717: 379: 366: 264: 762: 38: 723: 578:, 26,000 people died. Nankai earthquakes also occurred around the same time, according to the 51: 294:
Response to notification from the government and local-government disaster management plans.
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Tōkai, Tōnankai and Nankai earthquakes occurred at the same time with magnitude 8.4–8.6.
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The Japanese government is taking the Tōkai earthquakes seriously and has charged the
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1,000 households were destroyed with 5,000 people drowned. 10,000 people drowned in
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The Tokai Earthquake is expected to occur in the near future along the trench near
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Areas under Intensified Measures against Earthquake Disaster (shown in yellow)
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Future Tokai earthquakes are expected to occur with the sequence of
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Annual Report of the Earth Simulator Center April 2004 - March 2005
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Establishment of Headquarters for Earthquake Disaster Prevention
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When the Earthquake Assessment Committee (Regular) meets.
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split houses, and 400 shrines and temples were damaged.
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Landslides. Many houses, shrines and temples collapsed.
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Tokai earthquake preparedness in Shizuoka prefecture
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JMA monitors unusual deformation that may accompany
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Explanatory Information on Tokai Earthquake Warning
330:Investigation Report on Tokai Earthquake (Regular) 719:Coordinating Committee for Earthquake Prediction 610:, destroyed 700 houses in a village west of the 305:Investigation Report on Tokai Earthquake (Extra) 159:Coordinating Committee for Earthquake Prediction 562:(altitude 7m) were swept away by a tsunami. In 682:caused damage along the entire coast from the 1095: 473:Many people were killed by collapsing houses. 297:Preparatory action based on prevention plans 8: 1008: 1006: 786: 784: 782: 780: 316:When any anomalous phenomena are observed. 245:Action to be taken by public organizations 42:Nankai, Tōnankai and Tōkai earthquake areas 1756:Earthquake clusters, swarms, and sequences 1102: 1088: 1080: 558:was severely shaken. The buildings around 409: 133:, and other areas with large populations. 242:Action to be taken by the general public 163:Large-Scale Earthquake Countermeasure Act 154:precede the next major Tōkai earthquake. 83: 18:Large-Scale Earthquake Countermeasure Act 232: 175: 104:earthquake followed by a tsunami in 2011 37: 34:Anticipated area of the Tokai Earthquake 29: 745: 499:was damaged, and the big bell of the 394:) earthquakes and E Tōkai (literally 7: 883: 881: 879: 877: 875: 873: 871: 869: 867: 865: 62:that have occurred regularly with a 888:Information on the Tokai Earthquake 841:Elaine Kurtenbach (April 1, 2012). 576:Shida District, Shizuoka Prefecture 373:Relation to other major earthquakes 102:was severely damaged after a large 1024:. pp. 121–126. Archived from 938:"気象庁|東海地震について | 東海地震に関連する情報の種類と流れ" 25: 430:Years since previous earthquake 1751:Megathrust earthquakes in Japan 599:1605 Keichō Nankaidō earthquake 171:Earthquake Assessment Committee 100:Fukushima I Nuclear Power Plant 755:"The Tokai Earthquake of 20xx" 1: 1703:Nankai megathrust earthquakes 734:Nankai megathrust earthquakes 193:Nankai megathrust earthquakes 27:Class of earthquakes in Japan 1066:Tokai earthquake information 940:. 2014-03-18. Archived from 915:. 2014-03-18. Archived from 913:"気象庁|東海地震について | 東海地震に関連する情報" 729:List of earthquakes in Japan 560:the great Buddha of Kamakura 406:Historical Tōkai earthquakes 344:No further action required. 319:No further action required. 110:, the highest on the scale. 1730:Matsushiro earthquake swarm 1647:2018 Hokkaido Eastern Iburi 1070:Japan Meteorological Agency 151:Japan Meteorological Agency 96:Hamaoka Nuclear Power Plant 66:of 100 to 150 years in the 1772: 580:Geological Survey of Japan 503:fell down. The tsunami in 363:governmental organizations 322:Collection of Information 236:Information issued by JMA 495:The main building of the 55: 830:Mercalli intensity scale 714:1944 Tōnankai earthquake 108:nuclear event of level 7 92:Japanese intensity scale 1725:South Kantō earthquakes 974:「南海トラフ地震に関連する情報」の発表について 195:has been in operation. 663:Ansei-Tōkai earthquake 281:Tokai Earthquake Watch 225:Prediction information 208:earthquake occurrence. 181: 43: 35: 1486:1994 offshore Sanriku 1441:1973 Nemuro Peninsula 976:気象庁報道発表資料(2017年9月26日) 900:気象庁が発表する「東海地震に関連する情報」 357:), which consists of 179: 137:Earthquake prediction 41: 33: 1713:Tōnankai earthquakes 1111:Earthquakes in Japan 1050:Ō-Edo Rekishi Hyakka 765:on February 24, 2012 531:Considerable damage. 239:Announcement timing 202:strain accumulation, 848:The Huffington Post 800:Earth Planets Space 791:Kiyoo Mogi (2004). 678:. The accompanying 386:) earthquakes, C+D 1718:Nankai earthquakes 1557:2007 Kuril Islands 1547:2006 Kuril Islands 1446:1974 Izu Peninsula 1416:1963 Kuril Islands 1215:1771 Great Yaeyama 991:www.data.jma.go.jp 540:September 11, 1498 191:) " targeting the 182: 44: 36: 1738: 1737: 1708:Tōkai earthquakes 1567:2008 Iwate–Miyagi 1466:1983 Sea of Japan 1341:1925 North Tajima 1321:1911 Kikai Island 724:Kanto earthquakes 705: 704: 655:December 23, 1854 524:Shohei earthquake 482:December 11, 1096 444:Hakuhō earthquake 351: 350: 48:Tōkai earthquakes 16:(Redirected from 1763: 1696:Related articles 1496:2000 Izu Islands 1346:1927 North Tango 1336:1923 Great Kantō 1104: 1097: 1090: 1081: 1053: 1046: 1040: 1039: 1037: 1036: 1030: 1019: 1010: 1001: 1000: 998: 997: 983: 977: 971: 965: 959: 953: 952: 950: 949: 934: 928: 927: 925: 924: 909: 903: 897: 891: 885: 860: 859: 857: 855: 838: 832: 822: 816: 815: 813: 811: 797: 788: 775: 774: 772: 770: 761:. Archived from 750: 696:Kōchi Prefecture 688:Chiba prefecture 656: 628: 627:October 28, 1707 592: 591:February 3, 1605 541: 517: 483: 467:Ninna earthquake 461: 437: 436:November 26, 684 424:Death toll 410: 334: 329: 309: 304: 285: 280: 257: 252: 233: 88: 57: 21: 1771: 1770: 1766: 1765: 1764: 1762: 1761: 1760: 1741: 1740: 1739: 1734: 1691: 1687:2024 Hyūga-nada 1505: 1451:1978 Izu Ōshima 1431:1968 Hyūga-nada 1411:1961 North Mino 1376:1941 Hyūga-nada 1304: 1280:1891 Mino–Owari 1185:1662 Hyūga-nada 1113: 1108: 1062: 1057: 1056: 1047: 1043: 1034: 1032: 1028: 1017: 1012: 1011: 1004: 995: 993: 985: 984: 980: 972: 968: 960: 956: 947: 945: 936: 935: 931: 922: 920: 911: 910: 906: 898: 894: 886: 863: 853: 851: 840: 839: 835: 823: 819: 809: 807: 795: 790: 789: 778: 768: 766: 752: 751: 747: 742: 710: 654: 635:Hoei earthquake 626: 590: 548:Meiō earthquake 539: 515: 501:Tōdai-ji temple 497:imperial palace 489:Kōwa earthquake 481: 459: 435: 408: 375: 361:and members of 332: 331: 327: 307: 306: 302: 283: 282: 278: 255: 254: 250: 227: 169:) in 1978, the 139: 87: 28: 23: 22: 15: 12: 11: 5: 1769: 1767: 1759: 1758: 1753: 1743: 1742: 1736: 1735: 1733: 1732: 1727: 1722: 1721: 1720: 1715: 1710: 1699: 1697: 1693: 1692: 1690: 1689: 1684: 1679: 1674: 1672:2022 Fukushima 1669: 1664: 1659: 1657:2021 Fukushima 1654: 1649: 1644: 1639: 1637:2016 Fukushima 1634: 1629: 1624: 1622:2015 Ogasawara 1619: 1614: 1609: 1604: 1602:2011 Fukushima 1599: 1594: 1589: 1584: 1579: 1574: 1569: 1564: 1559: 1554: 1549: 1544: 1539: 1534: 1529: 1524: 1519: 1513: 1511: 1507: 1506: 1504: 1503: 1498: 1493: 1488: 1483: 1478: 1473: 1468: 1463: 1458: 1453: 1448: 1443: 1438: 1433: 1428: 1423: 1418: 1413: 1408: 1403: 1398: 1393: 1388: 1383: 1378: 1373: 1368: 1363: 1358: 1353: 1351:1930 North Izu 1348: 1343: 1338: 1333: 1331:1922 Shimabara 1328: 1323: 1318: 1312: 1310: 1306: 1305: 1303: 1302: 1297: 1292: 1287: 1282: 1277: 1272: 1267: 1262: 1257: 1252: 1247: 1242: 1237: 1232: 1227: 1222: 1217: 1212: 1207: 1202: 1197: 1192: 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288: 277: 276: 272: 269: 266: 262: 260: 249: 248: 244: 241: 238: 235: 234: 231: 224: 222: 219: 215: 207: 204: 201: 200: 199: 196: 194: 190: 185: 178: 174: 172: 168: 164: 160: 155: 152: 147: 144: 136: 134: 132: 128: 124: 120: 116: 115:Nankai Trough 111: 109: 106:, causing a 105: 101: 97: 93: 89: 79: 77: 73: 69: 65: 64:return period 61: 53: 49: 40: 32: 19: 1707: 1632:2016 Tottori 1612:2012 Sanriku 1552:2007 Chūetsu 1537:2005 Fukuoka 1532:2004 Chūetsu 1527:2003 Tokachi 1510:21st century 1501:2000 Tottori 1491:1995 Hanshin 1476:1993 Kushiro 1461:1982 Urakawa 1436:1968 Tokachi 1421:1964 Niigata 1406:1952 Tokachi 1381:1943 Tottori 1356:1933 Sanriku 1326:1914 Senboku 1316:1909 Anegawa 1309:20th century 1295:1896 Sanriku 1240:1847 Zenkoji 1195:1703 Genroku 1175:1611 Sanriku 1160:1596 Fushimi 1125:679 Tsukushi 1049: 1044: 1033:. 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Retrieved 763:the original 748: 694:(modern-day 608:Hachijō-jima 427:Description 400: 395: 391: 383: 376: 352: 333:   328:   308:   303:   284:   279:   256:   251:   228: 218:strainmeters 211: 205:pre-slip and 197: 186: 183: 167:大規模地震対策特別措置法 156: 148: 140: 119:Kantō region 112: 80: 68:Tōkai region 58:) are major 47: 45: 1662:2021 Miyagi 1617:2014 Nagano 1597:2011 Miyagi 1587:2011 Nagano 1582:2011 Tōhoku 1542:2005 Miyagi 1522:2003 Miyagi 1471:1984 Nagano 1456:1978 Miyagi 1396:1946 Nankai 1391:1945 Mikawa 1361:1936 Miyagi 1290:1894 Shōnai 1270:1872 Hamada 1265:1858 Hietsu 1250:1854 Nankai 1235:1833 Shōnai 1210:1751 Takada 1180:1662 Kanbun 1165:1605 Keichō 1155:1586 Tenshō 1145:1361 Shōhei 962:南海トラフ地震について 574:, while in 454:No records 390:(literally 382:(literally 60:earthquakes 1745:Categories 1667:2021 Chiba 1642:2018 Osaka 1607:2012 Chiba 1572:2008 Iwate 1517:2001 Geiyo 1426:1968 Ebino 1401:1948 Fukui 1300:1896 Rikuu 1285:1894 Tokyo 1255:1854 Tōkai 1230:1828 Sanjō 1220:1792 Unzen 1205:1741 Kampo 1130:684 Hakuho 1118:Historical 1035:2009-11-14 996:2021-05-02 948:2021-05-02 923:2021-05-02 740:References 644:Mount Fuji 143:Suruga Bay 76:Kiyoo Mogi 1682:2024 Noto 1677:2023 Noto 1562:2007 Noto 1200:1707 Hōei 1190:1677 Bōsō 1170:1611 Aizu 1150:1498 Meiō 1135:869 Jōgan 810:March 11, 759:About.com 672:epicenter 572:Ise-Shima 417:Magnitude 384:South Sea 1366:1939 Oga 1260:1855 Edo 708:See also 396:East Sea 388:Tōnankai 287:東海地震注意情報 259:東海地震予知情報 214:pre-slip 127:Shizuoka 52:Japanese 854:May 19, 769:May 19, 680:tsunami 564:Ōminato 528:unknown 492:unknown 470:unknown 448:unknown 131:Shikoku 639:20,000 616:Muroto 552:40,000 505:Suruga 380:Nankai 216:using 123:Kyūshū 1068:from 1029:(PDF) 1018:(PDF) 902:- JMA 890:- JMA 796:(PDF) 667:3,000 603:2,300 421:Name 413:Date 347:None 338:(定例) 313:(臨時) 72:Japan 856:2012 812:2011 771:2012 701:147 670:The 649:102 621:107 585:137 534:265 510:209 476:203 369:) . 367:警戒宣言 267:) . 265:警戒宣言 56:東海地震 46:The 964:気象庁 690:to 676:Edo 659:8.4 631:8.4 595:7.9 568:Ise 556:Kai 544:8.4 520:8.5 486:8.4 464:8.5 440:8.3 121:to 70:of 1747:: 1020:. 1005:^ 989:. 864:^ 845:. 828:, 804:56 802:. 798:. 779:^ 757:. 698:). 566:, 129:, 54:: 1103:e 1096:t 1089:v 1038:. 999:. 951:. 926:. 858:. 814:. 773:. 618:. 582:. 165:( 86:w 84:M 50:( 20:)

Index

Large-Scale Earthquake Countermeasure Act


Japanese
earthquakes
return period
Tōkai region
Japan
Kiyoo Mogi
Mw
Japanese intensity scale
Hamaoka Nuclear Power Plant
Fukushima I Nuclear Power Plant
earthquake followed by a tsunami in 2011
nuclear event of level 7
Nankai Trough
Kantō region
Kyūshū
Shizuoka
Shikoku
Suruga Bay
Japan Meteorological Agency
Coordinating Committee for Earthquake Prediction
Large-Scale Earthquake Countermeasure Act
大規模地震対策特別措置法
Earthquake Assessment Committee

南海トラフ地震に関連する情報
Nankai megathrust earthquakes
pre-slip

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