Keisuke YOSHIDA

List of presentations

Seminar (under construction)

Invited Presentation

Yoshida, K., The 2024 Mw7.5 Noto Peninsula Earthquake and Recent Earthquake Swarms in Japan Triggered by the Upward Migration of Deep Crustal Fluids, SSA 2025 Annual Meeting, Baltimore, April 2025.

Yoshida, K., Earthquake Swarms in Japan Triggered by Upward Fluid Migration following the 2011 M9 Tohoku Earthquake and the 2024 Mw7.5 Noto Peninsula Earthquake, International Workshop on: Swarm-like Seismicity …What We Know, What We Don’t Know, and What We Need to Learn, Castrovillari, October 24.

Yoshida, K., Recent crustal earthquakes in Japan related to fluid movement, JpGU Meeting 2024, Makuhari, May 2024.

Yoshida, K., Resolve the source process of repeating earthquakes, JpGU Meeting 2024, May 26, 2024, Makuhari, May 2024.

Yoshida, K., The 2024 Mw7.5 Noto Peninsula, Japan, Earthquake initiated in Fluid-Driven Swarm Activity, SSA 2024 Annual Meeting, Anchorage, May 2024.

Yoshida, K., Rupture complexity of Mw3-7 earthquakes in Japan and its appearance in the time and frequency domains, JpGU Meeting 2022, Makuhari, May 23, 2022.

Yoshida, K., Akira Hasegawa, Shinako Noguchi, Keiji Kasahara, Low-frequency earthquakes in close vicinity of repeating earthquakes in the brittle upper crust of Hakodate, Hokkaido, northern Japan, JpGU Meeting 2021, Makuhari, May, 2021.

Yoshida, K., Study of stress magnitude in the lithosphere based on earthquake data, The 2020 SSJ Fall Meeting, Online, Oct 29, 2020.

Yoshida, K., Heterogeneities in Stress and Strength in Tohoku and its Relationship with Earthquake Sequences Triggered by the 2011 M9 Tohoku-Oki Earthquake, AOGS 16th Annual Meeting, Singapore, July, 2019.

Yoshida, K., Details of hypocenter migration of aftershocks of the 2011 Tohoku-Oki earthquake caused in the stress shadow probably due to the fluid pressure change, Workshop: Frontiers in Studies of Earthquakes and Faults, Shenzhen, November 29, 2017.

Yoshida, K., Akira Hasegawa, Details of hypocenter migration in the Yamagata-Fukushima border earthquake swarm probably caused by fluid pressure change after the 2011 Tohoku-Oki earthquake, JpGU-AGU Joint Meeting 2017, Makuhari, May 24, 2017.

Yoshida, K., Akira Hasegawa, Toru Matsuzawa, Heterogeneities of Stress and Strength and its Relationship With Induced Seismic Activities Associated With the Tohoku-Oki Earthquake, SSA 2017 Annual Meeting, Denver, Apr 18, 2017.

Presentations at International Conferences

Yoshida, K., The 2024 Mw7.5 Noto Peninsula, Japan, Earthquake initiated in Fluid-Driven Swarm Activity, SSA 2024 Annual Meeting, Anchorage, May 2024, invited.

Yoshida, K., H. Kanamori, Time-domain Source Parameter Estimation of Mw3-7 Earthquakes in Japan, SSA 2022 Annual Meeting, Bellevue, Apr. 2022.

Yoshida, K., Simultaneous estimation of stress drop and rupture directivity of small earthquakes in Japan: prevalence of asymmetrical rupture leads to systematic estimation error of stress, AGU Fall Meeting 2020, Online, Dec. 2020.

Yoshida, K., Ryota Takagi, Naoki Uchida, Rina Ikeda, Simultaneous estimation of stress drop and rupture directivity of small earthquakes in Japan: prevalence of asymmetrical rupture leads to systematic estimation error of stress, JpGU-AGU Joint Meeting 2020, SSS15-22, Online, July. 2020.

Yoshida, K., A systematic investigation of rupture directivity, stress drop, fault geometry, and radiation efficiency of small inland earthquakes in Japan, JpGU-AGU Joint Meeting 2020, SCG63-P13, Online, July. 2020.

Yoshida, K., Estimation of near-source Q and its temporal varaiation associated with pore pressure change: a case study of the Yamagata-Fukushima border swarm, JpGU-AGU Joint Meeting 2020, SSS15-P37, Online, July. 2020.

Yoshida, K., A. Hasegawa, T. Yoshida, T. Matsuzawa, Earthquake Activities Induced by the 2011 Tohoku-Oki Earthquake Related to the Heterogeneities in Stress and Strength in the Tohoku District, International Symposium Crustal Dynamics (ISCD-2): Toward Integrated View of Island Arc Seismogenesis, Uji, March, 2019.

Yoshida, K., T. Saito, K. Emoto, Rupture directivities of small- and moderate-sized earthquakes in the Yamagata-Fukushima swarm triggered by the fluid migration after the 2011 Tohoku-Oki earthquake, 10th ACES International Workshop, Awaji Island, September, 2018.

Yoshida, K., A. Hasegawa, T. Matsuzawa, Heterogeneities of Stress and Strength and its Relationship With Induced Seismic Activities Associated With the Tohoku-Oki Earthquake, SSA 2017 Annual meeting, Denver, Apr 18, 2017.

Yoshida, K., A. Hasegawa, T. Okada, J. Nakajima, Group for Aftershock Observations of the, Tohoku-Oki Earthquake, S-wave anisotropy in the crust of east Japan before and after the 2011 Tohoku-oki earthquake, International Symposium Crustal Dynamics 2016, Takayama, 2016.

Yoshida, K., A. Hasegawa, T. Matsuzawa, Stress and Strength Heterogeneities and its Relationship With Induced Seismic Activities Associated With the Tohoku-Oki Earthquake, International Symposium Crustal Dynamics 2016, Takayama, 2016.

Yoshida, K., P. Nelson, E. Fukuyama, Spatially heterogeneous stress orientation in the Philippines caused by the slip heterogeneity along the Philippine fault, AGU Fall Meeting 2015, San Fransisco, Dec. 2015.

Yoshida, K., A. Hasegawa, T. Okada, Second-Order Pattern of Stress in NE Japan Revealed by Dense Seismic Observation: Topography Effect and Its Implication for Absolute Stress State, International Symposium on Geodesy for Earthquake and Natural Hazards (GENAH), Matsushima, July 2014.

Yoshida, K., A. Hasegawa, T. Okada, J. Nakajima, Y.o Ito, T. Iinuma, Y. Asano, Group for the aftershock observations of th, off the Pacific coast of Tohoku Earthquake, Second-Order Pattern of Stress in NE Japan Revealed by Dense Seismic Observation: Topography Effect and Its Implication for Absolute Stress State, the 11th SEGJ International Symposium, Yokohama, Nov. 2013.

Yoshida, K., A. Hasegawa, T. Okada, Y. Ito, T. Iinuma, Y. Asano, Second-Order Pattern of Stress in NE Japan Revealed by Dense Seismic Observation: Topography Effect and Its Implication for Absolute Stress State, AGU Fall meeting 2012, Dec. 2012.

Yoshida, K., A. Hasegawa, T. Okada, J. Nakajima, Y. Ito, T. Iinuma, Y. Asano, Stress change after the 2011 Tohoku-Oki earthquake in the inland areas of Tohoku, GCOE Final Symposium: Achievements of G-COE Program for Earth and Planetary Dynamics and the Future Perspective, Sendai, Sep. 2012.

Yoshida, K., A. Hasegawa, T. Okada, Y. Ito, T. Iinuma, Y. Asano, Stress change by the 2011 great Tohoku earthquake and induced earthquake activity in the inland areas of northeastern Japan, AGU Fall Meeting 2011, San Fransisco, Dec. 2011.

Yoshida, K., T. Okada, Y. Ito, T. Iinuma, N. Umino, A. Hasegawa, Group for the aftershock observations of, the, Iwate-Miyagi Nairiku Earthquake, Spatial heterogeneity of stress and pore-pressure estimated from aftershocks of the 2008 Iwate-Miyagi Nairiku earthquake, IGRS International Geo-Hazards Research Society second symposium, Florence, Aug. 2010.

Yoshida, K., T. Okada, Y. Ito, T. Iinuma, N. Umino, A. Hasegawa, Group for the aftershock observations of, the, Iwate-Miyagi Nairiku Earthquake, Stress field and pore-pressure distribution inferred from the focal mechanisms of aftershocks of the 2008 Iwate-Miyagi Nairiku (inland) earthquake, G-COE symposium 2010: Dynamic Earth and Heterogeneous Structure, July 2010.

Yoshida, K., T. Okada, Y. Ito, T. Iinuma, N. Umino, A. Hasegawa, Estimation of postseismic stress field and pore-pressure distribution inferred from the focal mechanisms of aftershocks of the 2008 Iwate-Miyagi Nairiku (inland) earthquake, Western Pacific Geophysics Meeting, Taipei, June 2010.

Yoshida, K., T. Okada, Y. Ito, T. Iinuma, N. Umino, A. Hasegawa, Group for the aftershock observations of, the, Iwate-Miyagi Nairiku Earthquake, Spatial heterogeneity of tectonic stress and friction in and around the source area of the 2008 M7.2 Iwate-Miyagi Nairiku earthquake, NE Japan, inferred from the aftershock focal mechanisms, Global COE Program Symposium 2010, G-COE Symposium 2010 Dynamic Earth and Heterogeneous Structure, Sendai, July 2010.

Yoshida, K., T. Okada, Y. Ito, T. Iinuma, N. Umino, A. Hasegawa, Group for the aftershock observations of, the, Iwate-Miyagi Nairiku Earthquake, Heterogeneity of stress field in and around the source area of the 2008 M7.2 Iwate-Miyagi Nairiku earthquake, NE Japan, inferred from the aftershock focal mechanisms, AGU Fall Meeting 2009, Dec. 2009.

Yoshida, K., T. Okada, Y. Ito, T. Iinuma, D. Zhao, N. Umino, A. Hasegawa, Focal mechanisms of aftershocks of the 2008 M7.2 Iwate-Miyagi Nairiku earthquake and the stress field in its aftershock area, Global COE International Symposium 2009, Sendai, Feb. 2009.

Updated on June 9, 2024