Search Results - "Ueno, Tomotake"
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Non-contact imaging of subsurface defects using a scanning laser source
Published in Ultrasonics (01-02-2022)“…•Subsurface defects are visualized using a scanning laser source.•The defect images are significantly affected by local defect resonant frequency.•This imaging…”
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Seismological evidence of a dehydration reaction in the subducting oceanic crust beneath western Shikoku in southwest Japan
Published in Geophysical journal international (01-01-2021)“…SUMMARY The Philippine Sea plate (PHS) is subducting beneath southwest Japan from the Nankai Trough. In this region, deep low-frequency earthquakes/tremors…”
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Analyzing the continuous volcanic tremors detected during the 2015 phreatic eruption of the Hakone volcano
Published in Earth, planets, and space (06-12-2017)“…In the present study, we analyze the seismic signals from a continuous volcanic tremor that occurred during a small phreatic eruption of the Hakone volcano, in…”
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Multi-Data Integration System to Capture Detailed Strong Ground Motion in the Tokyo Metropolitan Area
Published in Journal of disaster research (01-06-2021)“…To accurately capture ground motion in the Tokyo metropolitan area, we have developed a multi-data integration system that combines a large amount of ground…”
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Monitoring the instrument response of the high-sensitivity seismograph network in Japan (Hi-net): effects of response changes on seismic interferometry analysis
Published in Earth, planets, and space (25-08-2015)“…More than 10 years have passed since observations began to be recorded by Hi-net, a network of high-sensitivity seismometers located in Japan. Several large…”
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Fractional seismic velocity change related to magma intrusions during earthquake swarms in the eastern Izu peninsula, central Japan
Published in Journal of Geophysical Research: Solid Earth (01-12-2012)“…We investigated temporal changes in seismic velocity associated with active seismic swarms and crustal deformations that occurred in 2006 and 2009 in the…”
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Determination of temporal changes in seismic velocity caused by volcanic activity in and around Hakone volcano, central Japan, using ambient seismic noise records
Published in Progress in earth and planetary science (27-09-2016)“…Autocorrelation functions (ACFs) for ambient seismic noise are considered to be useful tools for estimating temporal changes in the subsurface structure…”
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The 2018 Hokkaido Eastern Iburi earthquake (MJMA = 6.7) was triggered by a strike-slip faulting in a stepover segment: insights from the aftershock distribution and the focal mechanism solution of the main shock
Published in Earth, planets, and space (20-05-2019)“…The Hokkaido Eastern Iburi earthquake ( M JMA = 6.7) occurred on September 6, 2018, in the Hokkaido corner region where the Kurile and northeastern Japan…”
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Focal mechanisms and the stress field in the aftershock area of the 2018 Hokkaido Eastern Iburi earthquake (MJMA = 6.7)
Published in Earth, planets, and space (01-01-2021)“…The tectonic stress field was investigated in and around the aftershock area of the Hokkaido Eastern Iburi earthquake ( M JMA = 6.7) occurred on 6 September…”
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Subsurface structures derived from receiver function analysis and relation to hypocenter distributions in the region from the eastern Shikoku to the northern Chugoku districts, Southwest Japan
Published in Earth, planets, and space (01-01-2008)“…We carried out receiver function imaging to estimate detailed configurations of the Philippine Sea (PHS) slab beneath the Shikoku and Chugoku districts and…”
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Precise aftershock distribution of the 2004 Mid-Niigata prefecture earthquake—Implication for a very weak region in the lower crust
Published in Physics of the earth and planetary interiors (01-02-2009)“…The 2004 Mid-Niigata prefecture Earthquake (Mjma 6.8) occurred in the region of large strain rates (>0.1 ppm/y contraction) in the intraplate region in Japan…”
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Aftershock distribution of the 2004 Mid Niigata Prefecture Earthquake derived from a combined analysis of temporary online observations and permanent observations
Published in Earth, planets, and space (01-01-2005)“…Abstract The 2004 Mid Niigata Prefecture Earthquake (Mj = 6.8) occurred on 23 October 2004 in the northeastern part of the Niigata-Kobe Tectonic Zone where…”
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Spatial distribution of static stress drops for aftershocks of the 2005 West Off Fukuoka Prefecture earthquake
Published in Earth, planets and space (01-01-2006)“…Abstract We investigated the spatial distribution of static stress drops of the aftershocks of the 2005 West Off Fukuoka Prefecture earthquake, with the aim of…”
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Aftershock seismicity and fault structure of the 2005 West Off Fukuoka Prefecture Earthquake (MJMA7.0) derived from urgent joint observations
Published in Earth, planets and space (2006)“…Abstract On March 20, 2005, a large M JMA 7.0 earthquake occurred in the offshore area, west of Fukuoka prefecture, northern Kyushu, Japan. A series of joint…”
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Conference Proceeding Journal Article -
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Migration of low-frequency tremors revealed from multiple-array analyses in western Shikoku, Japan
Published in Journal of Geophysical Research: Solid Earth (01-09-2010)“…Multiple‐array observation above a belt‐like tremor zone was conducted to investigate the detailed location and migration of tremor activity in western…”
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Estimation of seismic velocity changes at different depths associated with the 2014 Northern Nagano Prefecture earthquake, Japan (MW 6.2) by joint interferometric analysis of NIED Hi-net and KiK-net records
Published in Progress in earth and planetary science (22-11-2016)“…To estimate the seismic velocity changes at different depths associated with a large earthquake, we apply passive image interferometry to two types of…”
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Anomalous depth dependency of the stress field in the 2007 Noto Hanto, Japan, earthquake: Potential involvement of a deep fluid reservoir
Published in Geophysical research letters (01-03-2011)“…We have elucidated depth variations in the stress field associated with the 2007 Noto Hanto, Japan, earthquake by stress tensor inversion using high‐quality…”
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Crust and uppermost mantle structure beneath central Japan inferred from receiver function analysis
Published in Earth, planets, and space (01-01-2009)“…We apply the receiver function method to estimate the structure of the crust and the uppermost mantle at an area that traverses central Japan including the…”
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