Displacement Above the Hypocenter of the 2011 Tohoku-Oki Earthquake
- Mariko Sato, T. Ishikawa, A. Asada
- GeologyScience
- 17 June 2011
Detailed geophysical measurements reveal features of the 2011 Tohoku-Oki megathrust earthquake and provide fundamental insights into the behavior of rare, very large earthquakes that may aid in preparation and early warning efforts for future tsunamis following subduction zone earthquakes.
Seafloor geodetic constraints on interplate coupling of the Nankai Trough megathrust zone.
- Y. Yokota, T. Ishikawa, Shun-ichi Watanabe, T. Tashiro, A. Asada
- GeologyNature
- 16 June 2016
Observations indicate previously unknown regions of high SDR that will be important for tsunami disaster mitigation, and regions of lowSDR that are consistent with distributions of shallow slow earthquakes and subducting seamounts, the first direct evidence that coupling conditions might be related to these seismological and geological phenomena.
Evidence of viscoelastic deformation following the 2011 Tohoku‐Oki earthquake revealed from seafloor geodetic observation
- Shun-ichi Watanabe, Mariko Sato, A. Asada
- Geology
- 28 August 2014
The GPS/acoustic seafloor positioning has detected significant postseismic movements after the 2011 Tohoku‐Oki earthquake (M9.0), just above the source region off the Pacific coast of eastern Japan.…
Shallow slow slip events along the Nankai Trough detected by GNSS-A
- Y. Yokota, T. Ishikawa
- GeologyScience Advances
- 1 January 2020
The results show the existence of large SSEs around the shallow side of strong coupling regions and indicate the spatiotemporal relationship with other SEQ activities expected in past studies.
GPS/Acoustic seafloor geodetic observation: method of data analysis and its application
- M. Fujita, T. Ishikawa, O. Colombo
- Geology
- 10 March 2006
We have been developing a system for detecting seafloor crustal movement by combining kinematic GPS and acoustic ranging techniques. A linear inversion method is adopted to determine the position of…
Shallow slow slip events along the Nankai Trough detected by the GNSS-A
- Y. Yokota, T. Ishikawa
- Geology
- 6 May 2019
Abstract: Various slow earthquakes (SEQs), including tremors, very-low-frequency events, and slow slip events (SSEs), occur along megathrust zones. In a shallow plate boundary region, although many…
Reciprocal Contribution of Pentraxin 3 and C‐Reactive Protein to Obesity and Metabolic Syndrome
- T. Ogawa, Yuri Kawano, T. Kodama
- Medicine, BiologyObesity
- 1 September 2010
Levels of PTX3 and CRP antagonistically participate in the development of obesity or MetS as well as CRP were significantly higher and lower in individuals who had more than one MetS component compared with those who had none.
Seafloor crustal deformation data along the subduction zones around Japan obtained by GNSS-A observations
- Y. Yokota, T. Ishikawa, Shun-ichi Watanabe
- GeologyScientific Data
- 6 February 2018
The combined Global Navigation Satellite System-Acoustic ranging (GNSS-A) technique and published data can be used to investigate several seismological phenomena along the subduction zones around Japan, namely the Nankai Trough, Sagami Trough and Japan Trench.
Undersea co-seismic crustal movements associated with the 2005 Off Miyagi Prefecture Earthquake detected by GPS/acoustic seafloor geodetic observation
- Y. Matsumoto, M. Fujita, T. Ishikawa, M. Mochizuki, T. Yabuki, A. Asada
- Geology
- 1 December 2006
We have been carrying out seafloor geodetic observations at two reference points situated off Miyagi Prefecture, northeastern Japan, using the GPS/Acoustic combination technique. Comparison of…
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