This page was last modified on 22 December 2015, at 21:44. 9 (July 12, 22: 17 JST) caused serious tsunami disasters in the southwestern part of Hokkaido, particularly on Okushiri Island (a tiny island off the southwest coast of Hokkaido with a population of about 4,500 at the time of earthquake). It had an estimated length of 150 km with a displacement of 2.5 m. The island of Okushiri subsided by 5–80 cm. [2] The quake caused fires to start in the town of Okushiri, adding greatly to the total damage. 1. Thus the major tsunamigenic earthquakes of 1993 and 1983 may be the result of such tectonic interactions of Pacific plate subduction off the west coasts of Honshu and Hokkaido, rather than of active collision of the North American plate with the Eurasian plate - as previously stated. Magnetic susceptibility and its anisotropy were measured for all samples from the four cores (Table 2) and down-core plots of the mean magnetic susceptibility (K), K3 inclinations and the key anisotropy parameters q, Pj, L and F against lithologic column obtained for each core are displayed in Fig. [1] It had a magnitude of 7.7 on the moment magnitude scale and a maximum felt intensity of VIII (Severe) on the Mercalli intensity scale. The tsunami reached Okushiri between 2 and 7 minutes after the earthquake. Key words: Tsunamis, 1993 Hokkaido Nansei-Oki earthquake, Okushiri Island. The fault geometry and slip distribution of the Hokkaido Nansei‐oki, Japan, earthquake of July 12, 1993 are estimated using seismic wave, tsunami, and geodetic data. Abstract. The earthquake … With the exception of the tsunami produced by the far off Chile Earthquake, each of these tsunamis resulted in at least 100 people The 1993 southwest-off Hokkaido earthquake (北海道南西沖地震, Hokkaidō Nansei Oki Jishin) occurred at 13:17:12 UTC on 12 July 1993 in the Sea of Japan near the island of Hokkaido. On 26 Sept. 2003, at 04:50 local time an earthquake with a magnitude of 8.0 on the Richter Scale struck off the coast of Japan's Hokkaido Prefecture. Landslide. Tsunami Event - July 12, 1993 Okushiri, Japan Main Event Page. Okushiri had been struck by another tsunami 10 year earlier. date of event: Monday, July 12th 1993 13:17:12 (gmt), 22:17 (Local okushiri time) Overall Description of the Hokkaido Nansei Oki Earthquake 1993 Earthquake in Sea of Japan 42.8 N, 139.2 E The Moment Tensor Rate Function inversion from P waves shows one nodal plane shallowly dipping to the west and the other nodal plane steeply dipping to the east. The hokkaido earthquake 1993. [2], The tsunami inundated large parts of Okushiri, despite its tsunami defenses. This was because the Hokkaido Electric Power Company's coal-fired power plant in Atsuma was heavily damaged by fires that broke out during the earthquake. The Hokkaido-Nansei-Oki earthquake on July 12 produced one of the largest tsunamis in Japan's history. The earthquake had two distinct shocks. The first lasted for 20 seconds, while the second lasted 35 seconds. Damage to sewer pipes in Kushiro City caused by the January 15, 1993 Kushiro-Oki and the October 4, 1994 Hokkaido-Toho-Oki earthquakes is reported and… The earthquake cut power to all 2.95 million households in Hokkaido. The M7.8 Hokkaido Nansei-Oki earthquake that occurred on 12 July, 1993 at 22:17 local time, produced a devastating tsunami wave that quickly hit Okushiri Island [1,2,3,4,5,6] (see Figure 1a–f).Approximately 4 min after the mainshock, a tsunami that was reported to be approximately 10 m high struck and swept away much of the urban area of the island’s Aonae Cape. A tsunami was widely observed in the Sea of Japan with a run-up of 3.5 m at Akita in northern Honshu, up to 4.0 m in southeastern Russia and up to 2.6 m on the coast of South Korea. Date: 12th July 1993. WHAT CAUSES EA RTHQUAKES TO GENERATE A TSUNAMI AND A LANDSLIDE ? The coast itself is rocky, but at Taisei it has a narrow plain and a beach consisting of sand … On July 12, 1993, a magnitude 7.8 earthquake struck in the Sea of Japan, triggering a tsunami that crashed into Hokkaido and Okushiri islands … The slide occurred in two phases that may match the two separate shocks recorded for the earthquake. The occurrence of the 1983 event led to the suggestion of nascent subduction along the Japan Sea coast off northern Hon-I shu (Kobayashi, 1983; Nakamura,, 1983) which the 1993 earthquake tends to … Many serious damages such as landslide, liquefaction and collapse of houses occurred from this earthquake. [4], The Okushiri-port landslide involved a volume of 1.5 x 105 m³ of rock. At 2217 local time (1317 UTC), the M s ‐7.8 quake rocked the west coast of Hokkaido and the small, offshore island of Okushiri in the Sea of Japan, generating a major tsunami. Onshore tsunami deposits resulting from the 1993 Southwest Hokkaido and 1983 Japan Sea earthquakes were described to evaluate the feasibility of tsunami deposits for inferring paleoseismic events along submarine faults. In 1993, the Hokkaido Nansei-Oki Earthquake Tsunami hit Okushiri Island located to the west of Hokkaido. Liquefaction caused road deformation and inclination of houses in Sapporo city, Hokkaido. The 1993 Southwest Hokkaido Earthquake of Magnitude 7. The Okushiri-port landslide involved a volume of 1.5 x 10 5 m³ of rock. A tsunami warning was given 5 minutes after the earthquake by the JMA. Japan Meteorological Agency officially named this earthquake 平成5年(1993年)北海道南西沖地震 (, "Comments for the Significant Earthquake", "Recent Landslides in Western Hokkaido, Japan", "Okushiri Tsunami Generated by southwest-off Hokkaido earthquake", https://infogalactic.com/w/index.php?title=1993_Hokkaidō_earthquake&oldid=696404377, Articles containing Japanese-language text, Creative Commons Attribution-ShareAlike License, About Infogalactic: the planetary knowledge core. The slide failure occurred at the base of a volcanic breccia bed. It triggered a major tsunami that caused deaths on Hokkaidō and in southeastern Russia, with a total of 230 fatalities recorded. Home Question 1 Question 2 Question 3 Question 4 More WHAT IS AN EARTHQUAKE? Paper No. The slide occurred in two phases that may match the two separate shocks recorded for the earthquake. The t… New escape routes were also provided and help was given for households to purchase emergency broadcast receivers. The Hokkaido Nansei-Oki Earthquake Tsunami that struck Okushiri Island off western Hokkaido, Japan’s northeasternmost island in 1993 killed about 200 in Okushiri Town, which had a population of less than 4,000. [3], The rupture occurred on a fault that dipped at 24 degrees to the east. In order to understand the damage caused by the earthquake… Scientists believe they have found a breakthrough in what caused the 1993 tsunami fires in Hokkaido (Image: GETTY/AFP) The fire spread further when … The 1993 Hokkaido earthquake was the strongest to strike Japan in 25 years, producing "scenes of utter devastation, with houses and Buddhist temples splintered in … The earthquake occurred in the backarc region of the convergent boundary where the Pacific Plate subducts beneath the Eurasian Plate. 5. Japan Sea Earthquake, the 1993 Hokkaido-Nansei-Oki Earthquake, the 2010 Chile Earthquake and the 2011 Great East Japan Earthquake were large enough to trigger the warning system for giant tsunamis. Liquefaction Case Study of Volcanic Gravel Layer during 1993 Hokkaido­ Nansei-Oki Earthquake . DOI: 10.20965/JDR.2007.P0044 Corpus ID: 132785042. At 10.17 pm on the evening of 12 July 1993 an earthquake with a magnitude of 7.8 occurred in the Sea of Japan off the south west coast of Hokkaido. However, this was too late for the inhabitants of Okushiri. Within 2–5 minutes, extremely large waves engulfed the Okushiri coastline and the central west coast of Hokkaido. The 1993 southwest-off Hokkaido earthquake (北海道南西沖地震, Hokkaidō Nansei Oki Jishin?) While the death toll for this disaster seems relatively low, it is a big jump up from the next largest earthquake in recent history which only saw 40 people perish. Tsunami Disaster Caused by 1993 Earthquake in Northern Part of Japan Sea Yoshitaka Hayashi Geological Survey Department Kokusaikogyo Company, Ltd. 3-6-1, Asahigaoka Hino-shi, 191 Japan OUTLINE OF DISASTER At 10:17 p.m. on the 12th of July 1993, a large earthquake (magnitude 7.8) occurred in the southwest of Hokkaido, Japan (Figure 1). Earlier today (6 Sep), at 3:00 a.m. (2:00 a.m. here in Singapore) in Hokkaido, Japan washitby another earthquake. The Hirahama coast faces the epicentral region of the 1993 Hokkaido-nansei-oki earthquake, which caused the well-known tsunami that devastated Okushiri Island . Introduction The Hokkaido Nansei-Oki (southwest off Hokkaido) earthquake of July 12, 1993 generated devastating tsunamis that caused significant damage in Japan, particularly on Okushiri Island. Within 2-5 minutes, extremely large waves engulfed the Okushiri coastline and the central west coast of Hokkaido. Lua error in Module:Coordinates at line 668: callParserFunction: function "#coordinates" was not found. A September 2018 earthquake rocked south central Hokkaidō, with its epicenter near the island’s main New Chitose Airport. occurred at 13:17:12 UTC on 12 July 1993 in the Sea of Japan near the island of Hokkaido. Geophys., this issue. The Hokkaido‐Nansei‐Oki earthquake on July 12 produced one of the largest tsunamis in Japan's history. Only 5 A maximum run-up of 32 m was recorded on the western part of the island near Monai. Abstract: This report reviews damages caused by the magnitude 7.8 earthquake which occurred … 6.6 in magnitude, Damage totaling over yen 66 billion was a severe blow to the community, which had an annual budget of only yen 5 billion. The Okushiri tsunami was generated by a Mw 7.7 (HRV) earthquake (42.851°N 139.197°E), at 13:17 UTC, near Hokkaido, Japan (according to the USGS). The magnitude 6.7 shake … On September 6th, 2018, at 3:07 local time, a strong earthquake of magnitude Mw = 6.6 struck the east Iburi region in Hokkaido, Japan. The island of Okushiri was hardest hit, with 165 casualties from the earthquake, the tsunami and a large landslide.[2]. [3], The destructive power of this tsunami led to an overhaul of the sea defences on Okushiri involving the construction of tsunami sluices on a river and strengthened embankments. 3.20 T. Kokusho, Y. Tanaka, K. Kudo and T. Kawai SYNOPSYS During the Hokkaido-Nansei-Oki Earthquake, a high-land area around the foot of the [5], From Infogalactic: the planetary knowledge core. Sato, H., Shimamoto, T., Tsutsumi A., and Kawamoto, E. (1994),Onshore Tsunami Deposits Caused by the 1993 Southwest Hokkaido Earthquake and the 1983 Japan Sea Earthquake, Pure and Appl. It had a magnitude of 7.7 on the moment magnitude scale and a maximum felt intensity of … Location: Hokkaido. The earthquake shaking caused moderately severe damage, VIII on the Mercalli scale. At 2217 local time (1317 UTC), the M s-7.8 quake rocked the west coast of Hokkaido and the small, offshore island of Okushiri in the Sea of Japan, generating a major tsunami. Keywords: Hokkaido, Nansei-oki, Japan Earthquake, July 12, 1993, Postearthquake Investigations, Strong Ground Motion, Tsunamis, Fires, Structural Damage, Liquefaction, Ground Failure, Lifelines, Highways, Tunnels, Transportation Systems, Port Failures, and Earthquake Engineering. Japan has experienced many disasters that have caused massive loss of property and lives. This disaster was identified as one of the major Tsunamis that have led to destruction of property and lives. Damage and Reconstruction at Okushiri Town Caused by the 1993 Hokkaido Nansei-Oki Earthquake Tsunami @article{Shuto2007DamageAR, title={Damage and Reconstruction at Okushiri Town Caused by the 1993 Hokkaido Nansei-Oki Earthquake Tsunami}, author={N. Shuto}, journal={Journal of disaster research}, year={2007}, … The slide failure occurred at the base of a volcanic breccia bed. 道南西沖地震 (, 気象庁が命名した気象及び地震火山現象, "Comments for the Significant Earthquake", "Late Cenozoic tectonic development of the back arc region of central northern Honshu, Japan, revealed by recent deep seismic profiling", "Independent active microplate tectonics of northeast Asia from GPS velocities and block modeling", "Okushiri Tsunami Generated by southwest-off Hokkaido earthquake". of the 1993 event, had a similar focal mechanism, but smaller mag-nitude and fault dimensions (Sata-ke 1986). earth­quake oc­curred in the backarc re­gion of the con­ver­gent bound­ary Results shown below were created with the NOAA MOST tsunami model.. Narrated perspective on the 1993 Okushiri tsunami: "Tsunami--Killer Wave, Born of Fire" Death Toll: 230. 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