Presentations

Seminars

Under construction.

Invited Presentations

• Yoshida, K., The 2024 Mw 7.5 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 Mw 7.5 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 2024.
• 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, Makuhari, May 26, 2024.
• Yoshida, K., The 2024 Mw 7.5 Noto Peninsula, Japan, Earthquake Initiated in Fluid-Driven Swarm Activity, SSA 2024 Annual Meeting, Anchorage, May 2024.
• Yoshida, K., Rupture complexity of Mw 3–7 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, October 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, April 18, 2017.

Presentations at International Conferences

• Yoshida, K., The 2024 Mw 7.5 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 Mw 3–7 Earthquakes in Japan, SSA 2022 Annual Meeting, Bellevue, April 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, December 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 variation 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., 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, invited.
• 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., 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., 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, April 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 Francisco, December 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. Ito, T. Iinuma, Y. Asano, Group for the Aftershock Observations of the 2011 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, November 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, December 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, September 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 Francisco, December 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, August 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 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 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, December 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, February 2009.