Search Results - "Kunugi, Takashi"

Hybrid predictor for ground-motion intensity with machine learning and conventional ground motion prediction equation by Kubo, Hisahiko, Kunugi, Takashi, Suzuki, Wataru, Suzuki, Shingo, Aoi, Shin

“…The use of strongly biased data generally leads to large distortions in a trained machine learning model. We face this problem when constructing a predictor…”
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MOWLAS: NIED observation network for earthquake, tsunami and volcano by Aoi, Shin, Asano, Youichi, Kunugi, Takashi, Kimura, Takeshi, Uehira, Kenji, Takahashi, Narumi, Ueda, Hideki, Shiomi, Katsuhiko, Matsumoto, Takumi, Fujiwara, Hiroyuki

“…National Research Institute for Earth Science and Disaster Resilience (NIED) integrated the land observation networks established since the 1995 Kobe…”
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Rupture process of the 2011 Tohoku-Oki mega-thrust earthquake (M9.0) inverted from strong-motion data by Suzuki, Wataru, Aoi, Shin, Sekiguchi, Haruko, Kunugi, Takashi

“…We investigate the rupture process of the M9.0 Tohoku‐Oki mega‐thrust earthquake using the relatively low‐frequency strong‐motion records (0.01–0.125 Hz)…”
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Analysis of Orientation Changes of S-Net Accelerometers due to Earthquake Motions by Dhakal, Yadab P., Kunugi, Takashi

“…S-net is a large-scale seafloor observation network for earthquakes and tsunamis around the Japan Trench, consisting of 150 observatories equipped with…”
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Preliminary analysis of nonlinear site response at the S-net seafloor sites during three Mw 7 class earthquakes by Dhakal, Yadab P., Kunugi, Takashi

“…In this paper, we investigated the characteristics of nonlinear site response (NLSR) at 23 S-net seafloor sites using strong-motion records obtained during…”
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Trampoline Effect in Extreme Ground Motion by Aoi, Shin, Kunugi, Takashi, Fujiwara, Hiroyuki

“…In earthquake hazard assessment studies, the focus is usually on horizontal ground motion. However, records from the 14 June 2008 Iwate-Miyagi earthquake in…”
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Determination of the source parameters of the 2011 Tohoku-Oki earthquake from three-component pre-P gravity signals recorded by dense arrays in Japan by Kimura, Masaya, Kame, Nobuki, Watada, Shingo, Araya, Akito, Kunugi, Takashi, Wang, Rongjiang

“…Dynamic earthquake rupture causes mass redistribution around the fault, and the emitted propagating seismic waves are accompanied by bulk density…”
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An Evaluation of Strong-Motion Parameters at the S-net Ocean-Bottom Seismograph Sites Near the Kanto Basin for Earthquake Early Warning by Dhakal, Yadab P., Kunugi, Takashi

“…We analyzed strong-motion records at the ground and borehole in and around the Kanto Basin and the seafloor in the Japan Trench area from three nearby offshore…”
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Estimation of source, path, and site factors of S waves recorded at the S-net sites in the Japan Trench area using the spectral inversion technique by Dhakal, Yadab P., Kunugi, Takashi, Yamanaka, Hiroaki, Wakai, Atsushi, Aoi, Shin, Nishizawa, Azusa

“…S-net is a large-scale ocean bottom (OB) network in the Japan Trench area, consisting of inline-type 150 observatories equipped with seismometers and pressure…”
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Corrigendum: An Evaluation of Strong-Motion Parameters at the S-Net Ocean-Bottom Seismograph Sites Near the Kanto Basin for Earthquake Early Warning by Dhakal, Yadab P., Kunugi, Takashi

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Peak ground motions and characteristics of nonlinear site response during the 2018 Mw 6.6 Hokkaido eastern Iburi earthquake by Dhakal, Yadab P., Kunugi, Takashi, Kimura, Takeshi, Suzuki, Wataru, Aoi, Shin

“…The observed peak ground accelerations and peak ground velocities (PGVs) of the 2018 Mw 6.6 Hokkaido eastern Iburi earthquake generally followed the median…”
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Multi-index method using offshore ocean-bottom pressure data for real-time tsunami forecast by Yamamoto, Naotaka, Aoi, Shin, Hirata, Kenji, Suzuki, Wataru, Kunugi, Takashi, Nakamura, Hiromitsu

“…We developed a real-time tsunami forecast method using only pressure data collected from the bottom of the ocean via a dense offshore observation network. The…”
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Earthquake-induced prompt gravity signals identified in dense array data in Japan by Kimura, Masaya, Kame, Nobuki, Watada, Shingo, Ohtani, Makiko, Araya, Akito, Imanishi, Yuichi, Ando, Masaki, Kunugi, Takashi

“…Earthquake ruptures cause mass redistribution, which is expected to induce transient gravity perturbations simultaneously at all distances from the source…”
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Analysis of strong ground motions and site effects at Kantipath, Kathmandu, from 2015 Mw 7.8 Gorkha, Nepal, earthquake and its aftershocks by Dhakal, Yadab P., Kubo, Hisahiko, Suzuki, Wataru, Kunugi, Takashi, Aoi, Shin, Fujiwara, Hiroyuki

“…Strong ground motions from the 2015 Mw 7.8 Gorkha, Nepal, earthquake and its eight aftershocks recorded by a strong-motion seismograph at Kantipath (KATNP),…”
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Reply to comment by Vallée et al. on “Earthquake-induced prompt gravity signals identified in dense array data in Japan” by Kimura, Masaya, Kame, Nobuki, Watada, Shingo, Ohtani, Makiko, Araya, Akito, Imanishi, Yuichi, Ando, Masaki, Kunugi, Takashi

“…Density perturbations accompanying seismic waves are expected to generate prompt gravity perturbations preceding the arrival of P-waves. Vallée et al. (Science…”
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Seismic anisotropy of the Pacific slab and mantle wedge beneath the Japanese islands by Tono, Yoko, Fukao, Yoshio, Kunugi, Takashi, Tsuboi, Seiji

“…The mantle beneath the Japanese islands is complex because of subduction of the Pacific and Philippine Sea plates and the deformation associated with it…”
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Evidence of strong long-period ground motions of engineering importance for Nankai Trough plate boundary earthquakes: comparison of ground motions of two moderate-magnitude earthquakes by Dhakal, Yadab P., Suzuki, Wataru, Kimura, Takeshi, Morikawa, Nobuyuki, Kunugi, Takashi, Aoi, Shin

“…We analyzed strong-motion and broadband recordings of two moderate-magnitude earthquakes that occurred in the Nankai Trough. The first event was the 2004 Mw…”
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Surface wave group velocity in the Osaka sedimentary basin, Japan, estimated using ambient noise cross-correlation functions by Asano, Kimiyuki, Iwata, Tomotaka, Sekiguchi, Haruko, Somei, Kazuhiro, Miyakoshi, Ken, Aoi, Shin, Kunugi, Takashi

“…Inter-station cross-correlation functions estimated using continuous ambient noise or microtremor records were used to extract the seismic wave propagation…”
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Estimation of the source process of the 2015 Gorkha, Nepal, earthquake and simulation of long-period ground motions in the Kathmandu basin using a one-dimensional basin structure model by Kubo, Hisahiko, Dhakal, Yadab P., Suzuki, Wataru, Kunugi, Takashi, Aoi, Shin, Fujiwara, Hiroyuki

“…The source rupture process of the 2015 Gorkha, Nepal, earthquake was estimated by the joint kinematic source inversion with near-field waveforms, teleseismic…”
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Atmospheric pressure change associated with the 2003 Tokachi-Oki earthquake by Watada, Shingo, Kunugi, Takashi, Hirata, Kenji, Sugioka, Hiroko, Nishida, Kiwamu, Sekiguchi, Shoji, Oikawa, Jun, Tsuji, Yoshinobu, Kanamori, Hiroo

“…Clear atmospheric pressure changes associated with the 2003 Tokachi‐Oki, Japan, earthquake with Mw 8.3 were recorded with the microbarographs distributed in…”
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