Heterogeneous structure around the rupture area of the 2003 Tokachi-oki earthquake (Mw = 8.0), Japan, as revealed by aftershock observations using Ocean Bottom Seismometers Epicenter of the earthquake was about 80km east-shoutheast of Erimo Cape, off shore of Tokachi. Coseismicslipcontoursafter YamanakaandKikuchi [2004]. (dashed lines), 1973 Nemuro, 1968 Tokachi, and 2003 Tokachi earthquakes. We also made limited inversion of nearfield records of the 1952 event and found that the 2003 asperity was also ruptured in 1952. Model region is denoted with a rectangle; depth of the plate interface is contoured in kilometers. The stations closest to the epicenter moved the greatest distances. A wavelet transform of the first ∼4 s of the P-wave concentrates information about earthquake magnitude from … 1-Hz GPS stations used in this study are shown as stars. Due to the 1952 Tokachi-Oki earthquake, 1 to 15% of wooden … Earth Planets Space 56 , … Note that the jump indicated by M8 is not indicative of the coseismic strain step of the 2003 Tokachi-oki earthquake. 104 km2) of the 1952 Tokachi-oki earthquake (Mw 8.1), previously inferred from tsunami waveform inversion. Next, real data assimilation for the 2003 Tokachi-oki earthquake is conducted to incorporate slip velocity data inferred from time dependent inversion of Global Navigation Satellite System time-series. 106: 2004: Rupture processes of the 2004 Chuetsu (mid‐Niigata prefecture) earthquake, Japan: A series of events in a complex fault system. We use the Network Inversion Filter to invert for the spatial and temporal evolution of afterslip in the 30 days following the earthquake. for the 2003 Tokachi‐oki earthquake (Mw = 8.3). Fig. earthquake. was hit by long-periodground motion from the Tokachi-oki earthquake 250 km away on the morning of26 September 2003 (local time = UT + 9 hours). Maximum run-up height of the tsunami waves reached 4 m above sea level. The large jump indicates a reset of the observation due to a 12 hour loss of power. The 2003 Hokkaidō earthquake, scientifically named the 2003 Tokachi-Oki earthquake (十勝沖地震, 2003 Tokachi-Oki Jishin), occurred off the coast of Hokkaidō, Japan on 26 September at 04:50 local time (19:50 UTC 25 September). ?1.4 ?? The objective of this study is to verify the main factors causing this damage by field investigations and earthquake response analyses. The event produced tsunami run-ups along the shoreline of southern Hokkaido that reached maximum heights of 4 meters. Talk:2003 Tokachi earthquake Jump to ... WikiProject Earthquakes (Rated Start-class, Low-importance) This article is part of WikiProject Earthquakes, a project to systematically present information on earthquakes, seismology, plate tectonics, and related subjects. 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. Joint inversion of strong motion and geodetic data for the source process of the 2003 Tokachi-oki, Hokkaido, earthquake K Koketsu, K Hikima, S Miyazaki, S Ide … Location of the 2003 Tokachi-Oki earthquake epicenter, its largest aftershock, and the tectonic framework. The optimized values of A–B, A and L are O(10 kPa), O(10 2 kPa) and O(10 mm), respectively. [1] GPS time series following the September 25, 2003 (UT) Tokachi‐oki earthquake (M W ∼ 8.0) reveal significant deformation. The tsunami source area of the 2003 Tokachi-oki earthquake estimated from tsunami travel times and its relationship to the 1952 Tokachi-oki earthquake. No one was killed, 6 shows three-component seismograms of the mainshock recorded at KOB1. Seismological monitoring on the 2003 Tokachi-oki earthquake, derived from off Kushiro permanent cabled OBSs and land-based observations. SCI - Research Center for Prediction of Earthquakes and Volcanic Eruptions (RCPEVE) Research output: Contribution to journal › Article › peer-review. The 2003 Tokachi-oki Earthquake occurred at Sept. 26 with JMA magnitude is MJ=8.0 and focal depth is 42km. The 2003 Tokachi-Oki earthquake was the third event of magnitude 8.0+ to strike the southeastern portion of Hokkaido in the last 50 years. Star denotes the epicenter of the ground to the ground surface vertical velocity as a function M = 8.3 2003 Tokachi-Oki earthquake which occurred on of frequency and horizontal wavelength. (2003) for strong ground motion prediction for future subduction earthquakes. An earthquake of magnitude 8.3 struck near the island on 26 September 2003. Model region is denoted with a rectangle; depth of the plate interface is contoured in kilometers. The representation theorem and the law governing the summation of random variables implies that, given that the slip amplitudes generated during an earthquake are distributed acco In the 2003 Tokachi-oki Earthquake, the test quay wall was shook with the seismic intensity of rank V+. 2. The May 2003 Miyagi earthquake is an earthquake struck the east coast of the Japanese island of Honshū at 18.24 pm (09:46 UTC) on May 26. After 2003 Tokachi Earthquake (M8.0), Hokkaido, Japan, post seismic deformation was observed, and this observation indicates occurrence of afterslip at eastern side of the earthquake. axis with transverse accelerations for the M8.1 Tokachi-oki earthquake, September 25, 2003. Super structure and pile foundation of Konan junior high school were severely damaged by the Tokachi-oki Earthquake, September 26, in 2003. Earth, planets and space 56 (3), 329-334, 2004. 3. The 2003 Tokachi-Oki earthquake was the largest earthquake to occur globally in that year and reruptured the portion of the Kuril-Japan Trench that last broke in the great Tokachi-Oki earthquake of 1952 (Hamada & Suzuki 2004).The abundance of local data in this region coupled with the large magnitude of the event has led to a range of models for the rupture being … 104 km2) coincides with the western-half of the ocean-bottom deformation area (?? edly, the tsunami arrived at Tokachi Harbor at 04:56 with a wave height of 4.3 m, while the Japanese Nationwide Coastal Wave Observa- in Hokkaido with respect to the 2003 Tokachi-oki Earthquake (c) Plots of of the NS and EW components in western Hokkaido (In the orthogonal direction of rupture propagation) / 0.05 0.0003r 0 (2.4) / 0.08 0.0003r 0 (2.5) / / Relational Expression of σ/πagainst the Hypocentral Distance for Inter-plate Earthquake … The resulting characteristics found by this analysis are as follows: (1) The value ofDbegan to decrease in 1998, and had been very small, for about one year before the main shock occurrence. An imaginary wave front to a Coseismicslipcontoursafter YamanakaandKikuchi [2004]. Accelerations recorded by seismic networks of Hokkaido indicated a high intensity The estimated tsunami source area (?? ?2.52 ?? reductions coincident with an earthquake [e.g., Li et al., 1998, 2003]. StochasticModelofaSubduction-ZoneEarthquake:SourcesandGround Motions for the 2003 Tokachi-oki, Japan, Earthquake by Daniel Lavallée,* Hiroe Miyake, and Kazuki Koketsu Abstract The representation theorem and the law governing the summation of random variables implies that, given that the slip amplitudes generated during an The missing data are indicated by … The 2003 Hokkaidō earthquake, scientifically named the 2003 Tokachi-Oki earthquake, occurred off the coast of Hokkaidō, Japan on 26 September at 04:50 local time (19:50 UTC 25 September). This is the first earthquake with a magnitude of 8 after the nation wide high-density strong-motion network was installed. Thrust-faulting events of the size of the July 15, 2003, earthquake are typically about 230x80 km (length x width); modeling of this earthquake implies dimensions of about 100x120 km, mostly down-dip of the hypocenter. Introduction A megathrust earthquake of a magnitude 8.1 struck Hokkaido in North Japan at 4:50 on September 26, 2003 (JST). reductions coincident with an earthquake [e.g., Li et al., 1998, 2003]. The 2003 Tokachi-Oki earthquake was the third event of magnitude 8.0+ to strike the southeastern portion of Hokkaido in the last 50 years. The Tokachi-Oki earthquake was a thrust (compressional) earthquake, and so the GPS stations on Hokkaido moved to the southeast and downwards. The temporal changes in fractal dimensionDof hypocen- ter distribution before the occurrence of the 2003 Tokachi- oki Earthquake was analyzed in this study. Static offsets for the Tokachi-oki earthquake have pre-viously been estimated by GSI (2003) and were used by Koketsu et al. 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