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Relevant bibliographies by topics / Tohoku-Oki earthquakes

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Academic literature on the topic 'Tohoku-Oki earthquakes'

Author: Grafiati

Published: 6 September 2023

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Journal articles on the topic "Tohoku-Oki earthquakes"

1

Nishikawa, T., T. Matsuzawa, K. Ohta, N. Uchida, T. Nishimura, and S. Ide. "The slow earthquake spectrum in the Japan Trench illuminated by the S-net seafloor observatories." Science 365, no. 6455 (August 22, 2019): 808–13. http://dx.doi.org/10.1126/science.aax5618.

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Investigating slow earthquake activity in subduction zones provides insight into the slip behavior of megathrusts, which can provide important clues about the rupture extent of future great earthquakes. Using the S-net ocean-bottom seismograph network along the Japan Trench, we mapped a detailed distribution of tectonic tremors, which coincided with very-low-frequency earthquakes and a slow slip event. Compiling these and other related observations, including repeating earthquakes and earthquake swarms, we found that the slow earthquake distribution is complementary to the Tohoku-Oki earthquake rupture. We used our observations to divide the megathrust in the Japan Trench into three along-strike segments characterized by different slip behaviors. We found that the rupture of the Tohoku-Oki earthquake, which nucleated in the central segment, was terminated by the two adjacent segments.

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2

Du, Cunpeng, Haitao Yin, Shengwen Yu, Le Yang, and Yuan Jia. "Effects of the 2011 Mw 9.0 Tohoku-Oki Earthquake on the Locking Characteristics and Seismic Risk of the Yishu Fault Zone in China." Sustainability 15, no. 5 (February 28, 2023): 4321. http://dx.doi.org/10.3390/su15054321.

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To ascertain the 2011 Tohoku-Oki Mw 9.0 earthquake’s impact on the stability of the Yishu fault zone, this study inverts the fault locking degree and slip rate defect distribution of the Yishu fault zone using GPS horizontal velocity field data covering the period from 1999 to 2009 and from April 2011 to 2019. This is based on the block negative dislocation model. Combined with the b value and strain field characteristics, the properties of deformation of the Yishu fault zone before and after the earthquake are comprehensively analyzed. The results show that before the 2011 Tohoku-Oki Mw 9.0 earthquake, the locking degree and depth of the northern segment of the Yishu fault zone were higher, while the locking depth of the southern segment of the fault was shallower. The 2011 Tohoku-Oki earthquake produced different coseismic effects on the southern and northern sections of the Yishu fault zone. The extension on the southern section and compression on the northern section caused the strain release in the southern sections of the Yishu fault zone following the earthquake. After it, the regional locking degree of the southern section of the Yishu fault zone was relieved. However, the locking degree of the northern segment of the fault zone was still high and the depth was deep, at about 26 km. In addition, the northern section of the Yishu fault zone was a section with an abnormally low b value and small earthquakes in the northern segment are sparse at present. The coseismic compression of the northern section caused by the 2011 Tohoku-Oki earthquake is conducive to its locking and easily accumulates stress, so it is necessary to pay attention to its seismic risk.

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Okawa, Izuru, Toshihide Kashima, Shin Koyama, and Masanori Iiba. "Recorded Responses of Building Structures during the 2011 Tohoku-Oki Earthquake with Some Implications for Design Practice." Earthquake Spectra 29, no. 1_suppl (March 2013): 245–64. http://dx.doi.org/10.1193/1.4000130.

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During the 2011 Tohoku-oki earthquake, a large number of response records from various types of buildings were obtained. The records give us the actual motions of buildings during the exceptionally large earthquakes that are considered comparable with design earthquakes. Various types of earthquake response records have been collected, and their properties with several buildings that will exhibit implications for structural design are discussed.

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4

Tao, Zheng Ru, Xia Xin Tao, and Wei Jiang. "A Review on Long-Term Evaluation of Occurrence Probability for Subduction-Zone Earthquakes in Eastern Japan." Applied Mechanics and Materials 166-169 (May 2012): 2190–96. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.2190.

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Evaluation approach of occurrence probability for subduction-zone earthquakes adopted in “National Seismic Hazard Maps for Japan” is reviewed, especially for the area of the 2011 off the Pacific coast of Tohoku Earthquake (2011 Tohoku Earthquake in short). One problem is pointed that the occurrence probability of such a large earthquake cannot be predicted just from seismicity in a region small like Miyagi-ken-Oki area or southern Sanriku-Oki. The whole subduction zone in eastern Japan is suggested to be taken into account with the interaction between the energy released in quakes. Finally, a simple test to predict the next large earthquake in the subduction-zone by means of Artificial Neural Network is presented, and the result for the years of 2008-2018 shows there may be an earthquake with magnitude up to 8.8 in the zone.

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5

Suito, Hisashi. "Current Status of Postseismic Deformation Following the 2011 Tohoku-Oki Earthquake." Journal of Disaster Research 13, no. 3 (June 1, 2018): 503–10. http://dx.doi.org/10.20965/jdr.2018.p0503.

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Postseismic deformation following the 2011 Tohoku-Oki earthquake has been observed by the Global Navigation Satellite System (GNSS) Earth Observation Network System (GEONET) and the Seafloor Geodetic Observation (SGO) over the past six and half years. Observed deformation at onshore sites exceeds 140 cm horizontally, there is uplift of 50 cm, and deformation tends eastward. However, offshore sites reveal complex patterns ranging from near-zero deformation in the northern part of Iwate-Oki, to westward in the southern part of Iwate-Oki, Miyagi-Oki, and the northern part of Fukushima-Oki regions, and eastward in the southern part of Fukushima-Oki and Ibaraki-Oki regions, respectively. The vertical deformation pattern is more complex than the horizontal. Offshore sites demonstrate subsidence but a large uplift is observed onshore along the Pacific coast. Subsidence is only observed along the Pacific coast in the northern part of Iwate, where there are variations in uplift or subsidence patterns. Many previous 2011 Tohoku-Oki event studies have used a primary model that considers only the afterslip effect. However, westward displacements observed by the SGO highlight the importance of viscoelastic relaxation, even during short-term deformation. It is thus considered that studies on postseismic deformation following the 2011 Tohoku-Oki earthquake should adopt a combined afterslip and viscoelastic model. Postseismic deformation following this event is estimated to continue for more than a few decades; therefore, assessing this effect is crucial for interpreting crustal deformation in Japan. Information on the status of interplate coupling or slip is also vital when assessing earthquake occurrence probability. The continued observation of postseismic deformation and careful monitoring of temporal and spatial changes in interplate coupling or slip will mitigate hazards from successive large megathrust earthquakes and improve understanding of crustal activity in Japan.

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Tong, P., D. Zhao, and D. Yang. "Tomography of the 2011 Iwaki earthquake (M 7.0) and Fukushima nuclear power plant area." Solid Earth Discussions 3, no. 2 (December 22, 2011): 1021–36. http://dx.doi.org/10.5194/sed-3-1021-2011.

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Abstract. High resolution tomographic images of the crust and upper mantle in and around the area of the 2011 Iwaki earthquake (M 7.0) and the Fukushima nuclear power plant are determined by inverting a large number of high-quality arrival times with both the finite-frequency and ray tomography methods. The Iwaki earthquake and its aftershocks mainly occurred in a boundary zone with strong variations in seismic velocity and Poisson's ratio. Prominent low-velocity and high Poisson's ratio zones are revealed under the Iwaki source area and the Fukushima nuclear power plant, which may reflect fluids released from the dehydration of the subducting Pacific slab under Northeast Japan. The 2011 Tohoku-oki earthquake (Mw 9.0) caused static stress transfer in the overriding Okhotsk plate, resulting in the seismicity in the Iwaki source area that significantly increased immediately following the Tohoku-oki mainshock. Our results suggest that the Iwaki earthquake was triggered by the ascending fluids from the Pacific slab dehydration and the stress variation induced by the Tohoku-oki mainshock. The similar structures under the Iwaki source area and the Fukushima nuclear power plant suggest that the security of the nuclear power plant site should be strengthened to withstand potential large earthquakes in the future.

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Tong, P., D. Zhao, and D. Yang. "Tomography of the 2011 Iwaki earthquake (M 7.0) and Fukushima nuclear power plant area." Solid Earth 3, no. 1 (February 14, 2012): 43–51. http://dx.doi.org/10.5194/se-3-43-2012.

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Abstract. High-resolution tomographic images of the crust and upper mantle in and around the area of the 2011 Iwaki earthquake (M 7.0) and the Fukushima nuclear power plant are determined by inverting a large number of high-quality arrival times with both the finite-frequency and ray tomography methods. The Iwaki earthquake and its aftershocks mainly occurred in a boundary zone with strong variations in seismic velocity and Poisson's ratio. Prominent low-velocity and high Poisson's ratio zones are revealed under the Iwaki source area and the Fukushima nuclear power plant, which may reflect fluids released from the dehydration of the subducting Pacific slab under Northeast Japan. The 2011 Tohoku-oki earthquake (Mw 9.0) caused static stress transfer in the overriding Okhotsk plate, resulting in the seismicity in the Iwaki source area that significantly increased immediately following the Tohoku-oki mainshock. Our results suggest that the Iwaki earthquake was triggered by the ascending fluids from the Pacific slab dehydration and the stress variation induced by the Tohoku-oki mainshock. The similar structures under the Iwaki source area and the Fukushima nuclear power plant suggest that the security of the nuclear power plant site should be strengthened to withstand potential large earthquakes in the future.

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Kasai, Kazuhiko, Akira Mita, Haruyuki Kitamura, Kazuhiro Matsuda, Troy A. Morgan, and Andrew W. Taylor. "Performance of Seismic Protection Technologies during the 2011 Tohoku-Oki Earthquake." Earthquake Spectra 29, no. 1_suppl (March 2013): 265–93. http://dx.doi.org/10.1193/1.4000131.

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Many buildings in the Tohoku and Kanto area were strongly shaken during the Tohoku-oki earthquake on 11 March 2011. Soon after the earthquake, the Japan Society of Seismic Isolation (JSSI) established committees to investigate the performance of structures where modern seismic protection methods were used. Since response-control technologies are relatively new, few systems had been validated with actual earthquakes. Generally, the various buildings performed well, and there were no failures of superstructures of base-isolated or supplementally damped buildings. Failures of numerous expansion joints and lead dampers in base-isolated buildings are described. Acceleration records of both base-isolated and supplementally damped buildings are analyzed and their seismic performance characteristics are discussed.

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Shibazaki, Bunichiro, and Hiroyuki Noda. "What Caused the 2011 Tohoku-Oki Earthquake? : Effects of Dynamic Weakening." Journal of Disaster Research 9, no. 3 (June 1, 2014): 252–63. http://dx.doi.org/10.20965/jdr.2014.p0252.

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Some observational studies have suggested that the 2011 great Tohoku-Oki earthquake (Mw9.0) released a large portion of the accumulated elastic strain on the plate interface owing to considerable weakening of the fault. Recent experimental and theoretical studies have shown that considerable dynamic weakening can occur at high slip velocities because of thermal pressurization or thermal weakening processes. This paper reviews severalmodels of the generation of megathrust earthquakes along the Japan Trench subduction zone, that considers thermal pressurization or a friction law that exhibits velocity weakening at high slip velocities, and it discusses the causes of megathrust earthquakes. To reproduce megathrust earthquakes with recurrence intervals of several hundreds of years, it will be necessary to consider the existence of a region at the shallow subduction plate boundary where significant dynamic weakening occurs due to thermal pressurization or other thermal weakening processes.

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Hashimoto, Manabu. "Crustal Deformation Associated with the 2011 Tohoku-Oki Earthquake: An Overview." Earthquake Spectra 29, no. 1_suppl (March 2013): 81–98. http://dx.doi.org/10.1193/1.4000117.

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The 2011 Tohoku-oki earthquake generated large displacements in and around the Japanese islands that were detected by the nationwide GPS network, sea-floor geodetic surveys, and space-borne radars. The east-west extension exerted on the Japanese islands by this event induced inland events of Mw6 or larger earthquakes. Coseismic subsidence of up to 1 m was observed along the coast where subsidence was found during the interseismic period. This observation contradicts expectations based on the concept of the recurrence of inter-plate earthquakes. Therefore, postseismic motions or other large events are expected to resolve this paradox.

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Dissertations / Theses on the topic "Tohoku-Oki earthquakes"

1

Kubo, Hisahiko. "Study on rupture processes of large interplate earthquakes estimated by fully Bayesian source inversions using multi period-band strong-motion data －The 2011 Tohoku-oki and the 2011 Ibaraki-oki earthquakes－." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/199110.

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Scala, Antonio <1985&gt. "Rupture Dynamics Along Subduction Zones: Structural and Geometrical Complexities and the Case of Tohoku-Oki Earthquake." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7489/1/Thesis_Antonio_Scala.pdf.

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We aim to characterize the rupture dynamics along the subduction zones. We investigated the shear/normal stress coupling when geometrical discontinuities and/or realistic velocity fields induce normal traction perturbations. The Spectral Element Method (SEM) is shown to be a powerful numerical tool to perform dynamic simulations for subduction earthquakes due to its geometrical flexibility and to the easy implementation of classical seismological boundary conditions. Sharp variations of normal stress are induced when a rupture propagates between dissimilar materials. Performing dynamic simulations along bimaterial interfaces, we show how the Coulomb friction law leads to unstable solutions due to the missing time/length scale of shear/normal coupling. We also show how the shear stress response has to be properly delayed to provide stable physical reliable solutions and how this delay can allow to define a length, comparable with the dissipation zone, which can be interpreted as the length of coupling. Free surface interaction is shown to generate a break of symmetry in the shallow part of dipping faults. In particular larger ground motion on the hanging wall and thus larger coseismic slip is evidenced. Due to the fault/free surface interaction this slip is shown to be generally associated with low-frequency radiation. Finally, exploiting these results some dynamic models of Tohoku earthquake are presented. The main source features of that event can be addressed in terms of influence of geometry and structure and thus of shear/normal coupling. Along dip we find a bilateral rupture faster trenchward where the largest coseismic slip is measured. Strong rupture accelerations due to geometrical and velocity discontinuities imply high-frequency sub-sources in the deep part of the subduction. We finally show how taking into account these dynamic features the tsunami scenarios for the Tohoku earthquake lead to higher estimates for tsunami hazard.

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Scala, Antonio <1985&gt. "Rupture Dynamics Along Subduction Zones: Structural and Geometrical Complexities and the Case of Tohoku-Oki Earthquake." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7489/.

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We aim to characterize the rupture dynamics along the subduction zones. We investigated the shear/normal stress coupling when geometrical discontinuities and/or realistic velocity fields induce normal traction perturbations. The Spectral Element Method (SEM) is shown to be a powerful numerical tool to perform dynamic simulations for subduction earthquakes due to its geometrical flexibility and to the easy implementation of classical seismological boundary conditions. Sharp variations of normal stress are induced when a rupture propagates between dissimilar materials. Performing dynamic simulations along bimaterial interfaces, we show how the Coulomb friction law leads to unstable solutions due to the missing time/length scale of shear/normal coupling. We also show how the shear stress response has to be properly delayed to provide stable physical reliable solutions and how this delay can allow to define a length, comparable with the dissipation zone, which can be interpreted as the length of coupling. Free surface interaction is shown to generate a break of symmetry in the shallow part of dipping faults. In particular larger ground motion on the hanging wall and thus larger coseismic slip is evidenced. Due to the fault/free surface interaction this slip is shown to be generally associated with low-frequency radiation. Finally, exploiting these results some dynamic models of Tohoku earthquake are presented. The main source features of that event can be addressed in terms of influence of geometry and structure and thus of shear/normal coupling. Along dip we find a bilateral rupture faster trenchward where the largest coseismic slip is measured. Strong rupture accelerations due to geometrical and velocity discontinuities imply high-frequency sub-sources in the deep part of the subduction. We finally show how taking into account these dynamic features the tsunami scenarios for the Tohoku earthquake lead to higher estimates for tsunami hazard.

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4

Hidayat, Panuntun. "Poroelastic rebound following the 2011 Tohoku-oki earthquake (Mw=9.0) as deduced from geodetic data and its application to infer the Poisson's ratio." Kyoto University, 2019. http://hdl.handle.net/2433/242618.

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Sun, Tianhaozhe. "Crustal deformation associated with great subduction earthquakes." Thesis, 2017. https://dspace.library.uvic.ca//handle/1828/8372.

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The slip behaviour of subduction faults and the viscoelastic rheology of Earth’s mantle govern crustal deformation throughout the subduction earthquake cycle. This Ph.D. dissertation presents research results on two topics: (1) coseismic and postseismic slip of the shallowest segment of subduction faults and (2) postseismic deformation following great subduction earthquakes controlled by mantle viscoelasticity. Topic 1: Slip behaviour of the shallowest subduction faults. By modelling high-resolution cross-trench bathymetry surveys before and after the 2011 Mw 9.0 Tohoku-oki earthquake, we determine the magnitude and distribution of coseismic slip over the most near-trench 40 km of the Japan Trench megathrust. The inferred > 60 m average slip and a gentle increase by 5 m towards the trench over this distance indicate moderate degree of net coseismic weakening of the shallow fault. Using near-trench seafloor and sub-seafloor fluid pressure variations as strain indicators in conjunction with land-based geodetic measurements, we determine coseismic-slip and afterslip distributions of the 2012 Mw 7.6 Costa Rica earthquake. Here, trench-breaching slip similar to the Tohoku-oki rupture did not occur during the earthquake, but afterslip extended to the trench axis and reached ~0.7 m over 1.3 years after the earthquake, exhibiting a velocity-strengthening behaviour. These two contrasting examples bracket a possibly wide range of slip behaviour of the shallow megathrust. They help us understand why large tsunamis are generated by some but not all subduction earthquakes. Topic 2: Postseismic deformation following great subduction earthquakes. Due to the asymmetry of megathrust rupture, with the upper plate undergoing greater coseismic tension than the incoming plate, viscoelastic stress relaxation causes the trench and land areas to move in opposite, opposing directions immediately after the earthquake. Seafloor geodetic measurements following the 2011 Tohoku-oki earthquake, modelled in this work, provided the first direct observational evidence for this effect. Systematic modelling studies in this work suggest that such viscoelastic opposing motion should be common to all Mw ≥ 8 subduction earthquakes. As the effect of viscoelastic relaxation decays with time and the effect of fault relocking becomes increasingly dominant, the dividing boundary of the opposing motion continues to migrate away from the rupture area. Comparative studies of ten 8 ≤ Mw ≤ 9.5 subduction earthquakes in this dissertation quantifies the primary role of earthquake size in controlling the “speed” of the evolution of this deformation. Larger earthquakes are followed by longer-lived opposing motion that affects a broader region of the upper plate.
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Brown, Lonn. "Strength of Megathrust Faults: Insights from the 2011 M=9 Tohoku-oki Earthquake." Thesis, 2015. http://hdl.handle.net/1828/6581.

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The state of stress in forearc regions depends on the balance of two competing factors: the plate coupling force that generates margin-normal compression, and the gravitational force, that generates margin-normal tension. Widespread reversal of the focal mechanisms of small earthquakes after the 2011 Tohoku-oki earthquake indicate a reversal in the dominant state of stress of the forearc, from compressive before the earthquake to tensional afterwards. This implies that the plate coupling force dominated before the earthquake, and that the coseismic weakening of the fault lowered the amount of stress exerted on the forearc, such that the gravitational force became dominant in the post-seismic period. This change requires that the average stress drop along the fault represents a significant portion of the fault strength. Two cases are possible: (1) The fault was strong and the stress drop was large or nearly-complete (e.g. from 50 MPa to 10 MPa), or (2) that the fault was weak and the stress drop was small (e.g. from 15 MPa to 10 MPa). The first option appears to be consistent with the dramatic weakening associated with high-rate rock friction experiments, while the second option is consistent with seismological observations that large earthquakes are characterized by low average stress drops. In this work, we demonstrate that the second option is correct. A very weak fault, represented by an apparent coefficient of friction of 0.032, is sufficient to put the Japan Trench forearc into margin-normal compression. Lowering this value by ~0.01 causes the reversal of the state of stress as observed after the earthquake. A slightly stronger fault, with a strength of 0.045, does not agree well with the observed spatial extent of normal faulting for the same coseismic reduction in strength. We also calculate distributions of stress change on the fault and average stress drop values for the Tohoku-oki earthquake, as predicted from 20 published rupture models which were constrained by seismic, tsunami, and geodetic data. Our results reconcile seismic observations that average stress drops for large megathrust events are low with laboratory work on high-rate weakening that predicts very high or complete stress drop. We find that, in all rupture models, regions of high stress drop (20 – 55 MPa) are probably indicative of dynamic weakening during seismic slip, but that the heterogeneous nature of fault slip does not allow these regions to become widespread. Also, coseismic stress increase on the fault occurs in many parts of the fault, including parts of the area that experienced high slip (> 30 m). These two factors ensure that the average stress drop remains low (< 5 MPa). The low average stress drop during the Tohoku earthquake, consistent with values reported for other large earthquakes, makes it unambiguous that the Japan Trench megathrust is very weak.
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7

Zannat, Umma Jamila. "Network Effect in Geocentre Motion." Phd thesis, 2019. http://hdl.handle.net/1885/157069.

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Geocentre motion is the motion of the centre of mass of the Earth system with respect to the geometric centre of figure of the solid Earth surface because of the continual deformation of the Earth by geophysical processes. This motion is important both in theory and in practice to understand and interpret various mass transport phenomena and their consequences, such as sea level rise, postseismic relaxation, polar ice melting, and glacial isostatic adjustment. Global reference frames for space geodetic point positioning are realised using measurements of the relative motion between satellites orbiting around the centre of mass on one hand and stations placed on the Earth's surface on the other. Therefore, reliable modelling of the geocentre motion is vital for the stability and the accuracy of these reference frames. In turn, the interpretation of many geodynamical quantities of current interest, such as the mean sea level, depends heavily on the quality of the adopted reference frame. Space geodetic measurement of the true geocentre motion, however, is difficult due to the discrete and therefore incomplete sampling of the Earth's surface by geodetic stations. In other words, there is a discrepancy between the centre of figure of the Earth surface and the centre of network of the stations, called the network effect, arising from the sampling bias of the geodetic network. In this work, we develop a method to estimate the magnitude of the network effect for a network of a given size \(N\). For a given crustal deformation model, we consider the Helmert parameters of transformation, that is, the parameters characterising a Euclidean similarity transformation, between the centre of figure frames before and after the deformation event. Our proposed estimate for the network effect, which we call the `expected bias', is the standard deviations of the changes in these parameters by the event as measured by a random network of the size \(N\). We show that, in accordance with probability theory, the expected bias scales as \(1/\sqrt{N}\), and we provide an explicit formula for this estimate in terms of the vector spherical harmonics expansion of the displacement field. We assess the effectiveness of the expected bias as an estimate of the network effect by simulating the displacement fields for two illustrative geodynamical processes: (instantaneous) coseismic deformation due to great earthquakes, and (time-dependent) elastic deformation due to surface water movements. We accordingly concentrate on the instantaneous changes and the secular drifts in the Helmert parameters for the two cases respectively. We found that, in both case studies, the network effect is often as large as the changes in the Helmert parameters themselves. Hence, current space geodetic networks are indeed inadequate for verifying the geocentre motion predictions by geophysical models accurately. Nevertheless, our simulations validate the expected bias to be a reasonable estimate of the network effect. Finally, we propose an alternative definition of the centre of network frame that assigns a weight proportional to the area a station represents to its measurements. We show that it can significantly reduce the network effect and improve the detection of geocentre motion in most cases.

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Books on the topic "Tohoku-Oki earthquakes"

1

Gakkai, Nihon Kenchiku. Preliminary Reconnaissance Report of the 2011 Tohoku-Chiho Taiheiyo-Oki Earthquake. Tokyo: Springer Japan, 2012.

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Japan. Shōbōchō. Shōbō Kenkyū Sentā. Heisei 23-nen (2011-nen) Tohoku chihō Taiheiyō oki jishin no higai oyobi shōbō katsudō ni kansuru chōsa hōkokusho. Tōkyō-to Chōfu-shi: Shōbōchō Shōbō Kenkyū Sentā, 2011.

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Kokudo Gijutsu Seisaku Sōgō Kenkyūjo (Japan). Heisei 23-nen (2011-nen) Tōhoku chihō Taiheiyō oki jishin doboku shisetsu saigai chōsa sokuhō =: Quick report on damage to infrastructures by the 2011 off the Pacific Coast of Tohoku earthquake. Tsukuba-shi: Kokudo Gijutsu Seisaku Sōgō Kenkyūjo, 2011.

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Hakubutsukan, Iwate Kenritsu. Iwate-ken ni okeru Tōhoku chihō Taiheiyō oki jishin hisai bunkazai tō no saisei e muketa torikumi: Hisai kara 3-nenme ni okeru seika to kadai = Effort to salvage and preserve cultural properties and natural history collections damaged by 2011 Tohoku Earthquake and Tsunami in Iwate Prefecture. [Morioka-shi]: Iwate Kenritsu Hakubutsukan, 2014.

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Preliminary Reconnaissance Report of the 2011 Tohoku-Chiho Taiheiyo-Oki Earthquake. Tokyo: Springer Japan, 2012. http://dx.doi.org/10.1007/978-4-431-54097-7.

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Japan, Architectural Institute of. Preliminary Reconnaissance Report of the 2011 Tohoku-Chiho Taiheiyo-Oki Earthquake. Springer Japan, 2016.

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Book chapters on the topic "Tohoku-Oki earthquakes"

1

Ohta, Yusaku, Tatsuya Kobayashi, Ryota Hino, Tomotsugu Demachi, and Satoshi Miura. "Rapid Coseismic Fault Determination of Consecutive Large Interplate Earthquakes: The 2011 Tohoku-Oki Sequence." In International Association of Geodesy Symposia, 467–75. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/1345_2015_109.

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Gupta, Harsh K., and Vineet K. Gahalaut. "2011 Tohoku-Oki Earthquake and Tsunami." In SpringerBriefs in Earth Sciences, 53–71. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6576-4_4.

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Kawase, Hiroshi, Shinchi Matsushima, Baoyintu, Masato Motosaka, Susumu Ohno, Hidekazu Watanabe, Reiji Tanaka, et al. "Earthquake, Geology, and Tsunami." In Preliminary Reconnaissance Report of the 2011 Tohoku-Chiho Taiheiyo-Oki Earthquake, 29–113. Tokyo: Springer Japan, 2012. http://dx.doi.org/10.1007/978-4-431-54097-7_2.

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Chen, Kejie, Rongxin Fang, Min Li, and Chuang Shi. "The Impact of Tohoku-Oki Earthquake on “CMONOC” Stations." In Lecture Notes in Electrical Engineering, 297–303. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29187-6_29.

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Koshihara, Mikio, Reiji Tanaka, Junji Ogawa, Ryota Yamaya, and Yukihiro Take. "Outline of Investigation and Damage." In Preliminary Reconnaissance Report of the 2011 Tohoku-Chiho Taiheiyo-Oki Earthquake, 1–27. Tokyo: Springer Japan, 2012. http://dx.doi.org/10.1007/978-4-431-54097-7_1.

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Tokimatsu, Kohji, Shuji Tamura, Hiroko Suzuki, and Kota Katsumata. "Damage to Soils and Foundation." In Preliminary Reconnaissance Report of the 2011 Tohoku-Chiho Taiheiyo-Oki Earthquake, 385–408. Tokyo: Springer Japan, 2012. http://dx.doi.org/10.1007/978-4-431-54097-7_10.

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Hiraishi, Hisahiro. "Summary." In Preliminary Reconnaissance Report of the 2011 Tohoku-Chiho Taiheiyo-Oki Earthquake, 409–20. Tokyo: Springer Japan, 2012. http://dx.doi.org/10.1007/978-4-431-54097-7_11.

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Kawai, Naohito, Hiroshi Isoda, and Takahiro Tsuchimoto. "Damage to Timber Buildings." In Preliminary Reconnaissance Report of the 2011 Tohoku-Chiho Taiheiyo-Oki Earthquake, 115–48. Tokyo: Springer Japan, 2012. http://dx.doi.org/10.1007/978-4-431-54097-7_3.

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Kabeyasawa, Toshimi, Yoshiaki Nakano, Masaki Maeda, Kazuhiro Kitayama, Daisuke Kato, Toshikatsu Ichinose, Akira Tasai, et al. "Damages to Reinforced Concrete Buildings." In Preliminary Reconnaissance Report of the 2011 Tohoku-Chiho Taiheiyo-Oki Earthquake, 149–96. Tokyo: Springer Japan, 2012. http://dx.doi.org/10.1007/978-4-431-54097-7_4.

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Kawano, Akihiko, Junichi Sakai, Mareyasu Doi, Hiroshi Kuramoto, Takashi Fujinaga, and Teruhisa Tanaka. "Damage to Steel Reinforced Concrete Buildings." In Preliminary Reconnaissance Report of the 2011 Tohoku-Chiho Taiheiyo-Oki Earthquake, 197–217. Tokyo: Springer Japan, 2012. http://dx.doi.org/10.1007/978-4-431-54097-7_5.

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Conference papers on the topic "Tohoku-Oki earthquakes"

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Abdolali, A., James T. Kirby, Giorgio Bellotti, S. Grilli, and J. C. Harris. "Hydro-Acoustic Wave Generation during the Tohoku-Oki 2011 Earthquake." In Coastal Structures and Solutions to Coastal Disasters Joint Conference 2015. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480311.003.

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Hino, Ryota, Yoshihiro Ito, Yusaku Ohta, Takeshi Iinuma, and Daisuke Inazu. "Ocean bottom pressure records of the 2011 Tohoku-Oki earthquake." In Proceedings of the 11th SEGJ International Symposium, Yokohama, Japan, 18-21 November 2013. Society of Exploration Geophysicists, 2013. http://dx.doi.org/10.1190/segj112013-117.

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Shang, Tao, Zhengru Tao, Baihui Zhu, and Xiaxin Tao. "Validity of Quarter-wavelength Approximation In the case of Tohoku-oki earthquake." In 2015 3rd International Conference on Advances in Energy and Environmental Science. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icaees-15.2015.38.

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Yoshida, Keisuke, Akira Hasegawa, Tomomi Okada, Junichi Nakajima, Yoshihiro Ito, Takeshi Iinuma, and Youichi Asano. "Stress fields in NE Japan before and after the 2011 Tohoku-oki Earthquake." In Proceedings of the 11th SEGJ International Symposium, Yokohama, Japan, 18-21 November 2013. Society of Exploration Geophysicists, 2013. http://dx.doi.org/10.1190/segj112013-126.

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Ito, Takeo, Syota Suzuki, Kachishige Sato, and Mamoru Hyodo. "Spatio-temporal afterslip distribution following the 2011 Tohoku-Oki earthquake using 3D viscoelastic green’s functions." In INTERNATIONAL SYMPOSIUM ON EARTH HAZARD AND DISASTER MITIGATION (ISEDM) 2017: The 7th Annual Symposium on Earthquake and Related Geohazard Research for Disaster Risk Reduction. Author(s), 2018. http://dx.doi.org/10.1063/1.5047341.

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Park, Sang-Hoon, and Seok-Woo Hong. "Coseismic geoid height changes of the 2011 Tohoku-Oki earthquake in GRACE monthly gravity data." In Workshop on Architecture and Civil Engineering 2013 Second. Science & Engineering Research Support soCiety, 2013. http://dx.doi.org/10.14257/astl.2013.32.11.

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Tomita, Fumiaki, Yusaku Ohta, Takeshi Iinuma, Ryota Hino, Motovuki Kido, and Naoki Uchida. "Seafloor Geodetic Observations to Reveal Co- and Post-Seismic Slip Distributions of the 2011 Tohoku-Oki Earthquake." In 2018 OCEANS - MTS/IEEE Kobe Techno-Ocean (OTO). IEEE, 2018. http://dx.doi.org/10.1109/oceanskobe.2018.8559370.

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Ito, Yoshihiro, and Ryota Hino. "Velocity reduction in an offshore region after the 2011 Tohoku-Oki earthquake, revealed from ocean-bottom seismic records." In Proceedings of the 11th SEGJ International Symposium, Yokohama, Japan, 18-21 November 2013. Society of Exploration Geophysicists, 2013. http://dx.doi.org/10.1190/segj112013-131.

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Takagi, Ryota, Tomomi Okada, Toshio Kono, and Akira Hasegawa. "Monitoring of seismic velocity structure before and after the 2011 Tohoku-Oki earthquake using array observation of ambient noise." In Proceedings of the 11th SEGJ International Symposium, Yokohama, Japan, 18-21 November 2013. Society of Exploration Geophysicists, 2013. http://dx.doi.org/10.1190/segj112013-115.

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Fujihara, Satoru, Kaoru Kawaji, Mariko Korenaga, and Shinichi Akiyama. "Source Model of 2011 Tohoku-Oki Earthquake Estimated from Seismic Waveform Inversion Considering 3-D Inhomogeneity of Underground Structure." In Proceedings of the 11th SEGJ International Symposium, Yokohama, Japan, 18-21 November 2013. Society of Exploration Geophysicists, 2013. http://dx.doi.org/10.1190/segj112013-125.

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Reports on the topic "Tohoku-Oki earthquakes"

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Si, Hongjun, Saburoh Midorikawa, and Tadahiro Kishida. Development of NGA-Sub Ground-Motion Model of 5%-Damped Pseudo-Spectral Acceleration Based on Database for Subduction Earthquakes in Japan. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, December 2020. http://dx.doi.org/10.55461/lien3652.

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Abstract:

Presented within is an empirical ground-motion model (GMM) for subduction-zone earthquakesin Japan. The model is based on the extensive and comprehensive subduction database of Japanese earthquakes by the Pacific Engineering Research Center (PEER). It considers RotD50 horizontal components of peak ground acceleration (PGA), peak ground velocity (PGV), and 5%-damped elastic pseudo-absolute acceleration response spectral ordinates (PSA) at the selected periods ranging from 0.01 to 10 sec. The model includes terms and predictor variables considering tectonic setting (i.e., interplate and intraslab), hypocentral depths (D), magnitude scaling, distance attenuation, and site response. The magnitude scaling derived in this study is well constrained by the data observed during the large-magnitude interface events in Japan (i.e., the 2003 Tokachi-Oki and 2011 Tohoku earthquakes) for different periods. The developed ground-motion prediction equation (GMPE) covers subduction-zone earthquakes that have occurred in Japan for magnitudes ranging from 5.5 to as large as 9.1, with distances less than 300 km from the source.

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Plourde, A. P., and J. F. Cassidy. Mapping tectonic stress at subduction zones with earthquake focal mechanisms: application to Cascadia, Japan, Nankai, Mexico, and northern Chile. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330943.

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Earthquake focal mechanisms have contributed substantially to our understanding of modern tectonic stress regimes, perhaps more than any other data source. Studies generally group focal mechanisms by epicentral location to examine variations in stress across a region. However, stress variations with depth have rarely been considered, either due to data limitations or because they were believed to be negligible. This study presents 3D grids of tectonic stress tensors using existing focal mechanism catalogs from several subduction zones, including Cascadia, Japan, Nankai, Mexico, and northern Chile. We bin data into 50 x 50 x 10 km cells (north, east, vertical), with 50% overlap in all three directions. This resulted in 181380 stress inversions, with 90% of these in Japan (including Nankai). To the best of our knowledge, this is the first examination of stress changes with depth in several of these regions. The resulting maps and cross-sections of stress can help distinguish locked and creeping segments of the plate interface. Similarly, by dividing the focal mechanism catalog in northern Japan into those before and those &gt;6 months after the 2011 Mw 9.1 Tohoku-Oki earthquake, we are able to produce detailed 3D maps of stress rotation, which is close to 90° near the areas of highest slip. These results could inform geodynamic rupture models of future megathrust earthquakes in order to more accurately estimate slip, shaking, and seismic hazard. Southern Cascadia and Nankai appear to have sharp stress discontinuities at ~20 km depth, and northern Cascadia may have a similar discontinuity at ~30 km depth. These stress boundaries may relate to rheological discontinuities in the forearc, and may help us unravel how forearc composition influences subduction zone behaviour and seismic hazard.

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