A fault model of the 1946 Nankaido earthquake derived from tsunami data. M 8.3 - 1946 Nankai Earthquake, Japan Thus, another quake is … The 1946 Nankai earthquake (昭和南海地震 Shōwa Nankai jishin) was a great earthquake in Nankaidō, Japan. The 1946 Nankai earthquake (南海地震 Nankai jishin) was a great earthquake in Nankaidō, Japan. Location of this band is on the deeper side of the focal regions of the 1944 Tonankai and 1946 Nankai earthquakes, which represent the last series of the Nankai Trough earthquake. On December 20, 1946, while Japan was recovering from all the devastation of World War II, it was hit once again with the Nankaido earthquake, a very powerful one of magnitude 8.1, along this line. Earthquake. The Nankai Trough is a convergent boundary where the Philippine Sea Plate is being subducted beneath the Eurasian Plate.Large earthquakes have been recorded along this zone since the 7th century, with a recurrence time of 100 to 200 years. Rupture process of the 1946 Nankai earthquake estimated using seismic waveforms and geodetic data Satoko Murotani1,2, Kunihiko Shimazaki1, and Kazuki Koketsu1 1Earthquake Research Institute, University of Tokyo, Tokyo, Japan, 2Now at National Museum of Nature and Science, Tsukuba, Japan Abstract The rupture process of the 1946 Nankai earthquake (M JMA 8.0) was estimated using seismic For instance, Cummins et al.
The results of this analysis establish that the earthquake rupture consisted of two main subevents, one lying within the 1-day aftershock area off the Kii Peninsula, while the other lies much farther to the west in the area of pronounced crustal deformation of western Shikoku. The 1946 Nankai Earthquake The previous Nankai Earthquake occurred on December 21st 1946 at 4:19am.

Earth Planet, Inter., 28: 32036.


The earthquake measured between 8.1 and 8.4 on the moment magnitude scale, and was felt from Northern Honshū to Kyūshū. We perform a simple subevent analysis of seismic P-waveforms from historical records of the 1946 Nankai earthquake. This paper considers seafloor deformation associated with the 1946 Nankai earthquake, which occurred in the Nankai Trough subduction zone off the coast of southwest Japan. Coseismic slip distribution on the fault plane of the 1946 Nankai earthquake (M w 8.3) was estimated from inversion of tsunami waveforms. Subevents of the 1946 Nankai earthquake (M jma 8.0) were distinguished from seismograms recorded on smoked papers with strong motion seismograms (T 0 =6s, amplification=2) and seismological data of Japan Meteorological Agency.Location and origin time of each subevent were roughly estimated from a hypocenter determination with phase readings of P and S waves for the subevent. Earthquake. It occurred on December 21, 1946, at 04:19 JST (December 20, 19:19 UTC). ADMIN; ATLAS; USGS National Earthquake Information Center, PDE; Additional Information The earthquake measured between 8.1 and 8.4 on the moment magnitude scale, and was felt from Northern Honshū to Kyūshū. Or, try our Real-time Notifications, Feeds, and Web Services . The 1946 Nankai earthquake (昭和南海地震 Shōwa Nankai jishin) was a great earthquake in Nankaidō, Japan. The Earthquake Event Page application supports most recent browsers, view supported browsers. It is therefore a zone of … Over 70 years have passed since the most recent shakes, the 1944 Tōnankai earthquake and the 1946 Nankai earthquake.

Experts believe there is a 70% to 80% probability of a severe Nankai Trough earthquake within 30 years. The Nankai Trough is a convergent boundary where the Philippine Sea Plate is being subducted beneath the Eurasian Plate.Large earthquakes have been recorded along this zone since the 7th century, with a recurrence time of 100 to 200 years. Earthquake []. The 1946 Nankai earthquake was the most recent in a long series of great earthquakes to have occurred along the Nankai Trough subduction zone, each of which has caused damage in southwestern Japan. Request PDF | The 1946 Nankai earthquake and segmentation of the Nankai Trough | We perform a simple subevent analysis of seismic P-waveforms from historical records of the 1946 Nankai earthquake. It occurred on December 21, 1946 at 04:19 JST (December 20, 19:19 UTC). The epicenter was on the sea floor 50km off the coast of Cape Shiono in Wakayama, and caused massive damage throughout Kochi and western Japan. The following three improvements from the previous study (Satake, 1993) were made. The easternmost segment of the Nankai trough remained unruptured during the 1944 and 1946 earthquakes that affected the rest of the trench. The Nankai Trough is a convergent boundary where the Philippine Sea Plate is being subducted beneath the Eurasian Plate.Large earthquakes have been recorded along this zone since the 7th century, with a recurrence time of 100 to 200 years. The earthquakes occur with a return period of about 90–200 years, and often occur in pairs, where a rupture along part of the fault is followed by a rupture elsewhere, notably the 1854 Ansei-Tōkai earthquake and the 1854 Ansei-Nankai earthquake the next day, and the 1944 Tōnankai earthquake, followed by the 1946 Nankaidō earthquake. Impact Summary; Technical Summary; Contributors.