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  • 1
    Unknown
    Tokyo : TERRAPUB
    Keywords: seismotectonics ; convergent plate boundary ; seismic velocity ; conductivity ; crustal activity ; active faults ; seismotectonics in the subduction zone Japan ; seismotectonics around the active convergent zones ; models of subduction zones ; earthquake ; Turkey ; Taiwan ; in-situ measurements ; scismotectonics ; earthquake hazard mitigation
    Description / Table of Contents: Synthetic Discussions --- Geophysical Studies of the Northern Cascadia Subduction Zone off Western Canada and Their Implications for Great Earthquake Seismotectonics: A Review / Ron M. Clowes and Roy D. Hyndman / pp. 1-23 --- Understanding the Seismotectonics of the Cascadia Subduction Zone: Overview and Recent Seismic Work / Thomas L. Pratt, Craig S. Weaver, Thomas M. Brocher, Thomas Parsons, Michael A. Fisher, Kenneth C. Creager, Robert S. Crosson, Roy D. Hyndman, George Spence, Anne M. Tréhu, Kate C. Miller and Uri S. TEN Brink / pp. 25-36 --- Long-Term Probabilistic Forecast in Japan and Time-Predictable Behavior of Earthquake Recurrence / Kunihiko Shimazaki / pp. 37-43 --- Recipe for Estimating Strong Ground Motions from Active Fault Earthquakes / Kojiro Irikura / pp. 45-55 --- Seismic Velocity --- New Features of Island Arc Crust Inferred from Seismic Refraction/Wide-Angle Reflection Expeditions in Japan / Takaya Iwasaki, Toshikatsu Yoshii, Naoshi Hirata and Hiroshi Sato / pp. 57-70 --- Seeking the Cause of Large Crustal Earthquakes in Japan: Influence of Arc Magma and Fluids / Dapeng Zhao / pp. 71-91 --- Conductivity --- Stress, Stress Release and Geoelectromagnetism / Fiona Simpson / pp. 93-106 --- Network-MT Survey in Japan to Determine Nation-Wide Deep Electrical Conductivity Structure / Makoto Uyeshima, Masahiro Ichiki, Ikuko Fujii, Hisashi Utada, Yasunori Nishida, Hideyuki Satoh, Masaaki Mishina, Tadashi Nishitani, Satoru Yamaguchi, Ichiro Shiozaki, Hideki Murakami and Naoto Oshiman / pp. 107-121 --- Understanding of Seismic Activity Using Conductivity Data in the Central Part of Northeastern Japan / Yukio Fujinawa, Noriaki Kawakami, Jun Inoue, Theodore H. Asch, Shinji Takasugi and Yoshimori Honkura / pp. 123-140 --- Crustal Activity --- Monitoring of Crustal Deformation in Japan Using L-band SAR Interferometry / Makoto Murakami, Satoshi Fujiwara, Takuya Nishimura, Mikio Tobita, Hiroyuki Nakagawa, Shinzaburo Ozawa and Masaki Murakami / pp. 141-146 --- Detection of a Coupling State in the Tokai Plate-Subducting Region Based on Microearthquake Seismicity and on Crustal Deformation / Shozo Matsumura / pp. 147-155 --- Coseismic Slip Distribution of the 1944 Tonankai and 1946 Nankai Earthquakes / Yuichiro Tanioka / pp. 157-165 --- The Southern California Integrated GPS Network (SCIGN) / Kenneth W, Hudnut, Yehuda Bock, John E. Galetzka, Frank H. Webb and William H. Young / pp. 167-189 --- Crustal Movement in Southwest Japan, Deduced from Continuous GPS Measurements, and Its Seismotectonic Implications / Kaoru Miyashita, Jianxin Li and Takashi Kawachi / pp. 191-200 --- Active Faults --- Deep Geometry and Evolution of Active Faults in Northern Honshu, Japan / Hiroshi Sato, Naoshi Hirata And Takaya Iwasaki / pp. 201-207 --- Rupturing History of Active Faults during the Last 1000 Years in the Central Japan / Eikichi Tsukuda / pp. 209-218 --- Active Faulting, Lower Crustal Delamination and Ongoing Hidaka Arc-Arc Collision, Hokkaido, Japan / Tanio Ito / pp. 219-224 --- Seismotectonics in the Subduction Zone: Japan --- Inhomogeneous Structure of the Crust and Its Relationship to Earthquake Occurrence / Norihito Umino and Akira Hasegawa / pp. 225-235 --- Configuration of the Philippine Sea Slab and Seismic Activity in the Tokai Region, Central Japan / Satoshi Harada and Akio Yoshida / pp. 237-246 --- On-Line Operating Network of the High Gain Seismometers and Tsunami Sensors, Deployed at the Sea-Floor of the Sagami Trough Subduction Zone, Central Japan / Takao Eguchi, Yukio Fujinawa, Eisuke Fujita, Sin-Iti Iwasaki, Isao Watabe, Hiroaki Negishi and Hiroyuki Fujiwara / pp. 247-260 --- Seismotectonics around the Active Convergent Zones --- Seismotectonics of the Frontal Himalaya through the Electrical Conductivity Imaging / B. R. Arora / pp. 261-272 --- Models of Subduction Zones --- A Simple Review on the Simulation of Earthquake Cycle at Subduction Zones / Kazuro Hirahara / pp. 273-282 --- Systematic Variations in Non-Local Seismicity Patterns in Southern California / K. F. Tiampo, J. B. Rundle, S. McGinnis, W. Klein and S. J. Gross / pp. 283-292 --- Earthquake in Turkey --- Deep Resistivity Structure around the Fault Associated with the 1999 Kocaeli Earthquake, Turkey / N. Oshiman, R. Yoshimura, T. Kasaya, Y. Honkura, M. Matsushima, S. Baris, C. Celik, M. K. Tuncer and A. M. Isikara / pp. 293-303 --- S Wave Splitting Observation inside of the North Anatolian Fault, Turkey / Keiichi Tadokoro, Masataka Ando, Serif Baris, Kin'ya Nishigami, Mamoru Nakamura, S. Balamir Ücer, Akihiko Ito, Yoshimori Honkura and A. Mete Isikara / pp. 305-310 --- Earthquake in Taiwan --- Drilling the Chelungpu Fault, Taiwan: Cores and Heat-Flow from a Thrust-Fault with Very Large Displacements in a Recent Earthquake / Masataka Ando, James Mori, Hidemi Tanaka and Kuo-Fong Ma / pp. 311-317 --- The Ms7.6 Chi-Chi, Taiwan, Earthquake of September 20, 1999 / J.-H. Wang, R.-D. Hwang, B.-S. Huang, K.-C. Chen, W.-G. Huang, and T.-M. Chang / pp. 319-324 --- Some Observations about the Chi-Chi, Taiwan Earthquake of September 21, 1999 / Yi-Ben Tsai / pp. 325-366 --- In-situ Measurements to Understand Seismotectonics in the Subduction Zone --- Borehole Observatories into Subduction Seismogenic Zones / Kiyoshi Suyehiro / pp. 367-374 --- Continental Scientific Drilling for Studying Plate Subduction Earthquakes / Ryuji Ikeda / pp. 375-382 --- Scismotectonics Applied to Earthquake Hazard Mitigation --- Stress Drop Distribution of Micro-Earthquakes at Ootaki, Nagano Prefecture, Japan, Obtained from Waveform Data by Borehole Stations / Shigeki Horiuchi and Yoshihisa Iio / pp. 383-391 --- Site Amplification of' K-NET Sites in the Kanto Region, Central Japan / Shigeo Kinoshita and Yousuke Ogue / pp. 393-405 --- Caltech-USGS Element of TriNet: Remote Stations, Communications, and Data Acquisition / E. Hauksson, P. Maechling, R. Busby and H. Kanamori / pp. 407-423 --- Microzoning Studies for Seismic Risk Mitigation / Kazuoh Seo, Diana Polonska, Katsumi Kurita and Kentaro Motoki / pp. 425-450 --- Earthquake Clusters in the Kanto and Tokai Subduction Zones: Implications for Modes of Plate Consumption / Shin-ichi Noguchi / pp. 451-467 --- Seismic Scattering from Small-Scale Heterogeneities: Numerical Simulations and Observation / Kiyoshi Yomogida / pp. 469-480 --- Tectonic Characteristics of Seismogenic Stress Field in East Asia / Jiren Xu, Zhixin Zhao and Kazuo Oike / pp. 481-497
    Pages: Online-Ressource (VIII, 500 Seiten)
    ISBN: 4887041292
    Language: English
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  • 2
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    In:  Bull. Seism. Soc. Am., Basel, Elsevier Science Publishers, vol. 94, no. 6, pp. 2037-2050, pp. B03304, (ISSN: 1340-4202)
    Publication Date: 2004
    Keywords: Seismicity ; Three dimensional ; Modelling ; Friction ; BSSA
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  • 3
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    In:  Geophys. Res. Lett., Tokyo Univ., Geophys. Inst., Fac. of Science, vol. 29, no. 10, pp. 120-1 to 120-4, pp. 1482, (ISSN 0343-5164)
    Publication Date: 2002
    Keywords: Aftershocks ; Seismicity ; Statistical investigations ; Omori ; GRL ; 7230 ; Seismology: ; Seismicity ; & ; seismotectonics ; 7223 ; Seismic ; hazard ; assessment ; and ; prediction ; 7260 ; Theory ; and ; modeling ; 7299 ; General ; or ; miscellaneous
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  • 4
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    In:  Tectonophysics, Corvallis, x + 406 pp., Oregon State University Press, vol. 417, no. 1-2, pp. 17-31, pp. L13610, (ISSN: 1340-4202)
    Publication Date: 2006
    Keywords: Seismicity ; Plate tectonics ; Subduction zone ; Stress ; Friction ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Volcanology ; red ; slow ; Earthquake ; Seismicity ; change ; Crustal ; deformation ; Low-frequency ; earthquake ; beneath ; Mt. ; Fuji
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  • 5
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    In:  J. Geophys. Res., Kunming, China, D. Reidel Publishing Company, vol. 110, no. B10, pp. 1227-1240, pp. B10303, (ISSN: 1340-4202)
    Publication Date: 2005
    Keywords: Seismicity ; Subduction zone ; Gutenberg-Richter magnitude frequency b-value ; JGR
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  • 6
    Publication Date: 2011-04-14
    Description: A swarm earthquake sequence is often assumed to be triggered by fluid flow within a brittle fault damage zone, which is assumed to be highly permeable. However, there is little seismological evidence of the relation between the fluid flow within the fault damage zone and the occurrence of swarm earthquakes. Here, we precisely determine the hypocenters and focal mechanisms of swarm earthquakes that occurred in the caldera of Hakone volcano, central Japan, using data from a dense seismic network. We demonstrate that the swarm earthquakes are concentrated on four thin plane-like zones, each of which has a thickness of approximately 100 m. One of the nodal planes of the focal mechanisms agrees with the planar hypocenter distribution. The swarm earthquakes that occurred during the initial stage of the activity exhibited a migration of hypocenters that appears to be represented by the diffusion equation. Based on the spatiotemporal distribution of the earthquakes, the hydraulic diffusivity is estimated to be approximately 0.5–1.0 m2/s. The observations imply that swarm earthquakes were triggered by the diffusion of highly pressured fluid within the fault damage zone. A burst-like occurrence of the swarm earthquakes is also observed in the later stage. These swarm earthquakes are thought to have been triggered primarily by local stress changes caused by the preceding activity. The complicated spatiotemporal pattern is thought to have been caused by the effect of the fluid flow within the high-permeability damage zones as well as the stress perturbations generated by the swarm earthquakes themselves.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 7
    Publication Date: 2014-08-01
    Description: Hakone volcano, located at the northern tip of the Izu–Mariana volcanic arc, Japan, has a large caldera structure containing numerous volcanic hot springs. Earthquake swarms have occurred repeatedly within the caldera. The largest seismic swarm since the commencement of modern seismic observations (in 1968) occurred in 2001. We investigated the anisotropic structure of Hakone volcano based on S-wave splitting analysis, and found spatiotemporal changes in the splitting parameters accompanying the seismic swarm activity. Depth-dependent anisotropic structures are clearly observed. A highly anisotropic layer with a thickness of ~1.5 km is located beneath the Koziri (KZR) and Kozukayama (KZY) stations. The anisotropic intensity in the region reaches a maximum of 6–7% at a depth of 1 km and decreases markedly to less than 1% at a depth of 2 km. The anisotropic intensity beneath Komagatake station (KOM) decreases gradually from a maximum of 6% at the surface to 0% at a depth of 5 km, but is still greater than 2.5 % at a depth of 3 km. At KZY, the anisotropic intensity along a travel path of which the back azimuth was the south decreased noticeably after the 2001 seismic swarm activity. During the swarm activity, tilt meters and GPS recorded the crustal deformation. The observed decrease in anisotropic intensity is presumed to be caused by the closing of microcracks by stress changes accompanying crustal deformation near the travel path.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 132 (1990), S. 569-581 
    ISSN: 1420-9136
    Keywords: Coherency of rupture ; seismic spectrum ; nonlocal conditions of earthquake occurrence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract In considering the seismic spectrum, one of the methods to incorporate irregularity of fault motion statistically is to introduce the concept of coherency of fracture. In a classic paper,Aki (1967) investigated the scaling law of seismic spectrum on the basis of a statistical model in which an exponentially decaying function is fitted to the autocorrelation function of the dislocation velocity. It is found, however, thatAki's model does not necessarily express irregular fault motion, but corresponds to a smooth dislocation. We show that an analytical function of dislocation velocity gives the same autocorrelation function and the same seismic spectrum as those ofAki's model. In actual fault motion, there is considerable evidence which indicates that the dislocation is not continuous and smooth over the whole fault plane, but is often segmented in several parts. In order to take into consideration this feature we introduce a generalized autocorrelation function of the dislocation velocity in which many coherent fractures smaller than the size of the fault dimension are included. It is shown that the more small-scale coherent fractures, the larger the seismic wave energy in the high frequency range.Kanamori andAllen (1986) showed that a large ratio of seismic wave energy relative to the seismic moment means a large effective stress drop. On the other hand, it is well known that when a fault plane is segmented in several parts, stress drop becomes large (e.g.,Madariaga, 1979;Rudnicki andKanamori, 1981). These two results are fused in our model, because we find that large seismic wave energy is obtained when the fault motion includes small-scale fractures.Kanamori andAllen (1986) also showed that there is a tendency for earthquakes with long repeat times to have a large effective stress drop. Our model implies that a fracture corresponding to earthquakes with long recurrence intervals is more complex, and the strength is large, as also suggested byCao andAki (1986) using a numerical simulation. It should be noted that to the zeroth order, an approximate scaling relation is observed among earthquakes, which means that a large earthquake consists of a relatively large-scale coherent fracture. This fact seems to suggest that the condition of occurrence of a large earthquake is related to the maturing of a source region in which a large coherent fracture becomes feasible.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 80 (1976), S. 2728-2731 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 10
    Publication Date: 1976-12-01
    Print ISSN: 0022-3654
    Electronic ISSN: 1541-5740
    Topics: Chemistry and Pharmacology , Physics
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