The The optimized frictional parameters yield the . At a focal depth of 27 km (17 mi), this great undersea earthquake measured 8.3 on the moment magnitude scale, making it the most powerful earthquake of 2003, as . This earthquake occurred 80 km southeastern off the Erimo Peninsula, on the surface of the . This event pair is rare because seismic waveforms of both events were instrumentally recorded. Using repeating earthquakes, coseismic and post-seismic velocity changes have been measured for the 1999İzmit and Düzce earthquakes (Peng & Ben-Zion 2006) and the 2003 Tokachi-Oki earthquake . Results of the survey show that the largest tsunami height was 4 m to the east of Cape Erimo, around Bansei-onsen, and locally at Mabiro. Earthquake Research Institute, University of Tokyo, Japan . 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. Share Simulated performance of steel moment-resisting frame buildings in the 2003 Tokachi-oki earthquake. In this zone, the higher slip values are in the range of 5-7 meters, and the remainders are lower and essentially distributed around the epicenter. The results also show that the tsunami height distribution of the 2003 Tokachi-oki earthquake is clearly different from that of the 1952 Tokachi-oki earthquake, suggesting . We study characteristics of long-period ground motions from the 2003 Tokachi-oki earthquake (Mj 8.0), a large interplate earthquake, based on spatial distribution maps and attenuation relationships for four kinds of peak ground velocity (PGV) value. River dike failures during the 1993 Kushiro-oki earthquake and the 2003 Tokachi-oki earthquake . LETTER Earth Planets Space, 56, 383-387, 2004 Strong ground motion recorded by high-rate sampling GPS at the closest site to the 2003 Tokachi-oki earthquake Junji Koyama1, Nikolay V. Shestakov2, and Ryou Honda3 1Division of Earth and Planetary Sciences, Graduate School of Science, Hokkaido University, Sapporo, 060-0810 Japan 2Institute of Applied Mathematics, Vladivostok, 690041 Russia 1) - very The result of the 2003 Tokachi-oki earthquake indicates that short wavelength displacement exist in the coastal region to the west of Kushiro. Inicio; Quienes Somos; Nuestros Servicios; Contacto; 2003 tokachi earthquake 1). This prediction is part of the ongoing test of a new short-term prediction method; the test covers territories of Japan, California, and Eastern Mediterranean. 1.. IntroductionThe 2003 Tokachi-oki earthquake took place on September 25 2003, at 19:50 (UTC) at almost the same location as the 1952 Tokachi-oki earthquake (Watanabe et al., 2004).The focal area of the Tokachi-oki earthquakes is close to the southern end of the Kuril trench where an arc-arc junction from the Kuril to Japan trench began as a result of the southwestward migration of the . CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): On September 26, 2003, a large earthquake with a magnitude of 8.0 occurred along the Kuril trench off Tokachi, Hokkaido, Japan. We analyzed the deformation observed in Hokkaido in the 2nd to the 7th year following the 2003 Tokachi-oki earthquake and examined the effect of two major mechanisms (i.e., afterslip and viscoelastic relaxation) for the observed postseismic (2003). The estimated tsunami source area (∼ 1.4 × 104 km2) coincides with the western-half of the ocean-bottom deformation area (∼2.52 × 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. Earth, Planets and Space, 2004 . At the south off Hokkaido, a previous large earthquake (Mj 8.2) with almost the same epicenter as the 2003 Tokachi-oki earthquake occurred in 1952 (Fig. 1. The 2003 Hokkaidō earthquake, scientifically named the 2003 Tokachi-Oki earthquake (十勝沖地震, 2003 Tokachi-Oki Jishin? If it existed, the pre-slip <Mw 6 In order to prevent such severe damage due to future earthquakes, we predicted the velocity response spectra in the long-period range at more than 1] We use subdaily GPS time series of positions in the first 5 hours following the 2003 Tokachi-oki earthquake (M w = 8.0) located offshore of Hokkaido, Japan, to estimate frictional parameters . Especially at Tomakomai, two tank fires broke out and six floating roofs sank. occurred offshore of the Tokachi region in southern Hok- [6] Earthquake pairs were defined as earthquakes with kaido, northern Japan, where the Pacific (PAC) plate sub- epicenter . Introduction with magnitudes of greater than 2.0 satisfying the Guten- [2] On September 26, 2003, a MJMA 8.0 earthquake berg-Richter law were selected for analysis. (2004). 1. Epicenter of the 2003 earthquake is shown with a star. Slip distributions 8.0 2003 Tokachi-Oki earthquake. It is the latest gigantic inter-plate thrust earthquake in Japan. The purpose of measuring the groundwater level or discharge rate of the wells is mainly to monitor hot spring resources. DOI link for River dike failures during the 1993 Kushiro-oki earthquake and the 2003 Tokachi-oki earthquake. Jun 3, 2019. Earthquakes similar to or like 2003 Hokkaidō earthquake The 2003 Hokkaidō earthquake, scientifically named the 2003 Tokachi-Oki earthquake (十勝沖地震), occurred off the coast of Hokkaidō, Japan on 26 September at 04:50 local time (19:50 UTC 25 September). Comparing detection level before and after installing OBSs, we found dramatic improvement of the earthquake detection level in the interesting region. It should be emphasized that . 2. (2004) in their joint seismic-geodetic slip inversion and by Miura et al. Precise aftershock distribution is important to understand the mechanism of this earthquake generation. A large slip of 2.1 m is also estimated on the subfault located near . First, a seismic quiescence started about 10 days before the 2003 Tokachi-Oki earthquake. Abstract. Introduction A megathrust earthquake of a magnitude 8.1 struck Hokkaido in North Japan at 4:50 on September 26, 2003 (JST). [7] On September 26, 2003 at 19:50 GMT a large thrust earthquake occurred off Tokachi-oki, Hokkaido, Northern Japan. ?2.52 ?? 104 km2) of the 1952 Tokachi-oki earthquake (Mw 8.1), previously inferred from tsunami waveform inversion. The 2003 M w 8.1 Tokachi-Oki earthquake was the first great subduction zone event to be captured by an array of ocean bottom seismometers (OBS) in its epicentral region (Figure 1). 33 dead, 287 injured. At a focal depth of 27 km (17 mi), this great undersea earthquake measured 8.3 on the moment magnitude scale, making it the most powerful earthquake of 2003, as . Its epicenter was located at 41°46.7′ N and 144°04.7′ E, at a depth of 42 km, and took place at 19:50 on 25 September 2003 UTC (at 04:50 on 26 September 2003 JST) ().The focal mechanism was a reverse fault with a shallow dipping fault plane and a maximum slip of 5.8 m (Yamanaka and Kikuchi, 2003). 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. [1] We use four repeating earthquake sequences located near Hokkaido to identify velocity changes caused by the M w 8.0 2003 Tokachi-Oki earthquake. Sakhalin Kuril Islands Japan Kuril Islands dispute Ainu people. We estimate the tsunami source area of the 2003 Tokachi-oki earthquake (Mw 8.0) from observed tsunami travel times at 17 Japanese tide gauge stations. A lot of strong-motion data obtained by the network provide a good opportunity for The source model we estimated for the 2003 Tokachi-Oki earthquake features the maximum slip concentration on the patches at deep southeast of the epicenter. A wavelet transform of the first ∼4 s of the P-wave concentrates information about earthquake magnitude from both waveform amplitude and frequency content. The 2003 Tokachi-oki earthquake ( M w 8.0) was an interplate megathrust earthquake that occurred along the Kurile trench on September 26, 2003 (Japan Standard Time). Tsunami height survey was conducted immediately after the 2003 Tokachi-oki earthquake. Key words: Asperity, source process, recurrent event, Tokachi-oki earthquake, Kuril trench. Joint inversion of the 2003 Tokachi‐oki earthquake data leads to maximum slip values (∼6 m) confined at depths greater than ∼25 km, between 30 and 80 km northwest of the hypocenter, with a patch of slip (3 m) in the deepest part of the source (∼50 km depth). Field survey for the 2003 Tokachi-oki earthquake tsunami was conducted by the scientists from all over Japan [Tanioka et al., 2004a, b]. The 2003 Tokachi-oki earthquake occurred off the southeast coast of Hokkaido, Japan on 26 September 2003. Groundwater of two wells flows out . Slip values are very low (≤1 m) updip from the hypocenter. [2] On September 26, 2003, a M JMA 8.0 earthquake occurred offshore of the Tokachi region in southern Hokkaido, northern Japan, where the Pacific (PAC) plate subducts below the Eurasian (EUR) plate from the Kuril Trench. Epicenter of the earthquake was about 80km east-shoutheast of Erimo Cape, off shore of Tokachi. If you would like to participate, you can choose to edit the article attached to this page (see Wikipedia:Contributing FAQ for more information), or . We estimate the tsunami source area of the 2003 Tokachi-oki earthquake (Mw 8.0) from observed tsunami travel times at 17 Japanese tide gauge stations. Tokachi-oki earthquake in northern Japan, September 25, 2003, magnitude 8.1, was predicted six months in advance by a short-term earthquake precursor "chain" that reflects an increase of the correlation range among small earthquakes. ABS Consulting - The Tokachi-oki Earthquake in 2003 Go to Japanese Report Summary A severe earthquake struck Hokkaido, Japan, at 4:50 am on September 26, 2003. With this method, we observe the influence of velocity reductions at the near surface and also near the The 2003 Tokachi-oki earthquake, a large (Mw=8.0) interplate earthquake, occurred on 26 September, 2003 (Figure 1). The GPS waveforms were inverted to model the spatio-temporal evolution of the fault slip . The April 2011 Fukushima earthquake (福島県浜通り地震, Fukushima-ken Hamadōri jishin, lit."Fukushima Hamadōri earthquake") was a potent magnitude 6.6 M w intraplate aftershock that occurred at 17:16 JST (08:16 UTC) on 11 April, in the Hamadōri region of Fukushima, Japan.With a shallow focus of 13 km (8.1 mi), the earthquake was centred inland about 36 km (22 mi) west of Iwaki . At a focal depth of 27 km (17 mi), this great undersea earthquake measured 8.3 on the moment magnitude scale, making it the most powerful earthquake of 2003, as . This article is part of WikiProject Earthquakes, a project to systematically present information on earthquakes, seismology, plate tectonics, and related subjects. Key words: 2003 Tokachi-oki earthquake, 1-Hz GPS measurements, coseismic deformation, preseismic deforma-tion. Here we present observations of CID associated with the 2003 September 25 (19:50:06 UT) Tokachi-oki Earthquake (M w 8.0), a typical interplate thrust earthquake at the Japan Trench near Hokkaido, and the foreshock (M w 6.9, 10:07 UT) of the 2004 September 5 Southeast Off-Kii-Peninsula Earthquakes, an earthquake with high-angle thrust mechanism . The Tokachi-oki earthquake (M8.1), that took place on 2003 September 25, was one of the most important seismic events in the last 50 years in Japan. Entertainment & Media Published. Seismograms showed that long-period motions were predominant and duration became longer when the seismic waves propagated into the Yufutsu Plain, where Tomakomai is located. that the 2003 Tokachi-oki earthquake was a recurrent event of the 1952 Tokachi-oki earthquake. The slip distribution of the 2003 Tokachi-oki earthquake is estimated from the 11 tsunami waveforms recorded at 9 tide gauges in the southern Hokkaido and eastern Tohoku coasts and two ocean bottom tsunami-meters (pressure gauges) off Kamaishi, Tohoku. Tsunami height survey was conducted immediately after the 2003 Tokachi-oki earthquake. The 2021 Chiba earthquake (Japanese: 千葉県北西部地震, Hepburn: Chiba-ken Hokuseibu Jishin) was an earthquake that occurred in Japan at 22:41 JST (13:41 UTC) on October 7, 2021.. Key words: The 2003 Tokachi-oki earthquake, slip distribution, tsunami waveform inversion. 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). Postseismic deformation of the 2003 Tokachi-oki earthquake (M w 8.0) has been observed by GNSS. This hypothesis is tested with ground motions recorded during the 2003 Tokachi-oki, Japan, earthquake by seismometers located at the ground surface (K-NET and KiK-net) and in the boreholes (KiK-net). It was followed by a M7.4 aftershock at 21:08 UTC on the same day. Chapter 4 - The 2003 Tokachi-Oki earthquake 32 1. The pressure change starts at the arrival of seismic waves and reaches its maximum. The epicentral distance to the nearest observation well is about 250 km and . River dike failures during the 1993 Kushiro-oki earthquake and the 2003 Tokachi-oki earthquake book This event occurred at 19:50:07 UTC, had an epicentre located at 41.780° N, 144.079° E (Fig. Damaging Long-period Ground Motions from the 2003 Mw 8.3 Tokachi-oki, Japan Earthquake Kazuki Koketsu; Kazuki Koketsu 1. A great earthquake, named the 2003 Tokachi-oki earthquake, occurred in the southern Kuril subduction zone on 26th September 2003,4:50 JST (41.7797°N, 144.0795°E, 42 km depth; Japan Meteorological Agency). 104 km2) coincides with the western-half of the ocean-bottom deformation area (?? Share. Results of the survey show that the largest tsunami height was 4 m to the east of Cape Erimo, around Bansei-onsen, and locally at Mabiro. Seismic velocity Reductions Caused by the 2003 Tokachi-Oki Earthquake Rubinstein, J. L., N. Uchida, and G. C. Beroza (2007), Seismic velocity Reductions Caused by the 2003 Tokachi-Oki Earthquake , J. Geophys. Tokachi-oki Earthquake [5] The 2003 September 25 (19:50 UTC) Tokachi-oki earthquake (M 8) was the first megathrust earthquake in Japan recorded by its nationwide GPS network, GEONET, since its densification (Figure 1). The rupture area of the 2003 Tokachi-oki earthquake is similar to the western part of the rupture area of the 1952 Tokachi-oki earthquake estimated by Hirata et al. Model region is denoted with a rectangle; depth of the plate interface is contoured in kilometers. An earthquake of magnitude 8.3 struck near the island on 26 September 2003. of 5. The 1-Hz GPS displacement waveforms show good agreement with integrated accelerometer records except for low frequency noise that are inherently present in integrated seismic records. (dashed lines), 1973 Nemuro, 1968 Tokachi, and 2003 Tokachi earthquakes. Because of the large aftershock, the post-earthquake position was based on data between 20:00 and 21:00 UTC on September 25. Observation of aftershocks of the 2003 Tokachi-Oki earthquake was conducted in the southern part of the Tokachi basin in Hokkaido, Japan for estimation of local site effects. Broadband velocity seismographs installed at the Ohtsu water level observatory and Monsizu stations of the Warning Information System of Earthquake (WISE) network recorded long-period pulses produced by tilt motions resulting from the 2003 Tokachi-Oki earthquake (M 8.3) of 25 September 2003.The long-period pulse signal is represented using a low-pass-filtered expansion composed of intrinsic . 3.. A cabled array of strong-motion OBS, deployed in the rupture-zone region by The largest slip of 4.3 m is estimated on the subfault located off Hiroo. LETTER Earth Planets Space, 56, 341-345, 2004 Re-examination of aftershocks of the 1952 Tokachi-oki earthquake and a comparison with those of the 2003 Tokachi-oki earthquake Nobuo Hamada1 and Yasunori Suzuki2 1Meteorological Research Institute, 1-1, Nagamine, Tsukuba 305-0052, Japan 2Association for the Development of Earthquake Prediction, 1-5-18 Sarugaku-cho, Chiyoda-ku, Tokyo 101-0064, Japan Using a moving window cross-correlation technique, we identify delays in the arrival time of seismic waves that accumulate linearly with time into the seismogram. The long-period component of seismic ground motion generated by earthquakes attenuates more slowly with distance than higher frequencies and so persists to much . Its ground motion was recoreded at 655 stations of the nationwide strong motion networks, K-NET and KiK-net. Download . We analyze 1-Hz GPS data recorded during the 2003 Tokachi-Oki earthquake. Static offsets for the Tokachi-oki earthquake have pre-viously been estimated by GSI (2003) and were used by Koketsu et al. We investigated the similarities and differences between the rupture processes of the 1952 and 2003 Tokachi-oki earthquakes ( Mw ∼ 8) that occurred 51 years apart in the southernmost region of the Kuril subduction zone. 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). We use search for a linear increase in delays in the coda, as described above, because accurate origin times are unavailable and the S arrivals are often emergent, making differential S-P times undependable. Embed size(px) Link. Coseismicslipcontoursafter YamanakaandKikuchi [2004]. Introduction . A number of major thrust‐type earthquakes have occurred along this trench ( Figure 1 ). 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). Report. 1. (Received November 27, 2003; Revised May 10, 2004; Accepted May 26, 2004) Tokachi-oki earthquake in northern Japan, September 25, 2003, magnitude 8.1, was predicted six months in advance by a short-term earthquake precursor "chain" that reflects an increase of the correlation range among small earthquakes. This is the first earthquake with a magnitude of 8 after the nation wide high-density strong-motion network was installed. 1). 2003 Tokachi-Oki, Japan, earthquake with Mw 8.3 were recorded with the microbarographs distributed in Japan. The 2003 Tokachi-oki earthquake (Mw=8.0) caused the severe damage to oil storage tanks such as fires and sinking of floating roofs by liquid sloshing excited by long-period strong ground motions. The 2003 Tokachi-oki earthquakeThe 2003 Tokachi-oki earthquake had a magnitude M JMA 8.0. The 2003 Tokachi-oki earthquake caused the severe damage to oil storage tanks by liquid sloshing. The estimated tsunami source area (?? The main source parameters are as follows: the seismic moment 1.0 × 1021 Nm (Mw = 8.0); (strike, dip, rake . For several subsets of seismometers, we compute the PDF of the PGA and the parameters of the Lévy law that best fit the PDF. Nineteen wells are observation wells to monitor the static groundwater level. Talk:2003 Tokachi earthquake. 5 Categories. Menu. The rupture zone of the 2003 Tokachi-oki earthquake is close to the source region of the 1952 Tokachi-oki earthquake as described by Yamanaka and Kikuchi (2003), suggesting that such large earthquakes occurred repeatedly at fixed asperities. After 1.2 yr of the Tokachi Earthquake, two large events (M7.1, M6.9) occurred at off Kushiro, which is located 150km east from the Tokachi Earthquake. The 2003 Tokachi-oki earthquake is a large interplate earthquake between the Pacific and Okhotsk plates, where large interplate earthquakes periodically occur. ), occurred off the coast of Hokkaidō, Japan on 26 September at 04:50 local time (19:50 UTC 25 September). In this region, the pacific plate subducts towards N60°W under Hokkaido from the Kuril trench at a rate of about 80 mm/year [ DeMets et al., 1990 ]. The 2003 Tokachi-oki earthquake (M8.0) occurred off the south coast of Hokkaido Island, Japan on September 26, 2003. 2003 tokachi earthquake - vebdr.com The tsunami arrivals from the 2003 Tokachi-oki Earthquake∗1. Using a moving window cross-correlation technique, we identify delays in the arrival time of seismic waves that accumulate linearly with time into the seismogram. Large tsunami heights of about 4 m were observed at Hyakuninhama to the east of Cape Erimo and along the beach between Horokayanto and Oikamanai. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): [1] We use four repeating earthquake sequences located near Hokkaido to identify velocity changes caused by the Mw 8.0 2003 Tokachi-Oki earthquake. The pressure change starts at the arrival of seismic waves and reaches its maximum amplitude at the arrival of Rayleigh waves, suggesting that the observed pressure change was driven by the ground motion of seismic waves passing by . Real-time continuous observations of microearthquakes since 1999 have brought us tremendous findings. The results also show that the tsunami height distribution of the 2003 Tokachi-oki earthquake is clearly . The 1952 Tokachi earthquake ( Japanese: 1952年十勝沖地震 ), which occurred at 10:22:41 local time on 4 March in the sea near Tokachi District, Hokkaidō, had a magnitude of 8.1 on the moment magnitude scale. The epicenter was recorded approximately 4 kilometers (2.5 mi) southwest of Chiba in Chiba Prefecture.The earthquake struck a depth of around 62.0 kilometers (38.5 mi) to 75.0 kilometers (46.6 mi) with a .
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