International Joint Workshop on
Slow-to-Fast Earthquakes 2025

Last updated on Aug. 27, 2025

Access to the venue

Nearest airport: Kochi Ryoma Airport  (KCZ) (official site)
*Domestic flights available from Haneda (HND), Narita (NRT), Nagoya (NKM), Itami (ITM), Fukuoka (FUK), and Chubu Centrair (NGO) International airports

International flight available from Taoyuan International airport (TPE)

Airport limousine bus runs 1-2 times every hour. Bus stop: "Harimaya Bashi" (approx. 20 minutes from the airport) (Tosaden official site)

Please also check HERE for the details, especially about the bus from the venue to the airport.

Focus

Our understanding of earthquakes has changed significantly in recent years. We now observe various slow-deformation phenomena in addition to ordinary fast earthquakes, and this highlights the need to reconstruct earthquake science based our growing understanding of different interacting deformation processes. Deep interdisciplinary research across scientific disciplines such as geophysics, geology, and physics, as well as expanding our frontier into engineering and information science, are therefore critical to fully conceptualize these complex intricacies of earthquake science. The Science of Slow-to-Fast Earthquakes projects will hold “International Joint Workshop on Slow-to-Fast Earthquakes 2025” to promote a more integrated approach in earthquake research that encompasses the slow-to-fast earthquake spectrum. We will hold three topical sessions focusing on environmental conditions, novel data analysis methods, and the relationship between data and mathematical models, as well as general oral and poster sessions, to share research results, deepen our understanding of slow-to-fast earthquake processes, and explore new research directions among the participants.

• Environment and generation processes of slow and fast phenomena

• Cutting-Edge Approaches to Measurement and Data Analysis

• Data-constrained numerical modeling and model-informed observations

Details of plenary sessions Click here

We also welcome presentations in various fields other than above three themes.

Presentation Styles

Oral (in-person)

Poster (in-person)

Program

Timetable/presentation numbers (Subject to change, open on July 25), Click here

General Information for on-site participants (Subject to change, updated on Aug. 7), Click here

Abstracts（Subject to change, open on Aug. 21), Click here

Social Party

Date: Sep. 24, 2025 (18:30)

Venue: Kochi South Breeze Hotel (official site)

Fee: 2,500JPY for beverage (will be collected in advance or on the day of the event)

We sent an email on July 30th to those who registered to participate in the social party to inform about advance payment.

Pre-meeting Field Trip (Subject to change)

Date: Sep. 23 (Tue.), 2025 (Daytrip from/to Kochi)

Place: Shimanto belt

Participation fee: TBA

Details: See the details in the Pre-WS Field Trip page

Guides: Yoshitaka Hashimoto, Takahiro Hosokawa, Taizo Uchida (Kochi Univ.)

*Participants are required to arrive at Kochi by Sep. 22

Post-meeting Field Trip (Subject to change)

Date: Sep. 27 (Sat.), 2025 (Daytrip from/to Kochi)

Place: Sambagawa belt

Participation fee: TBA

Details: See the details in the Post-WS Field Trip page

Guides: Atsushi Okamoto (Tohoku Univ.), Masaoki Uno (UTokyo)

*Participants are supposed to leave Kochi after Sep. 28.

Event for Early-Career Researchers (Subject to change)

Date/Time: Sep. 23 (Tue.), 2025 16:00~

Venue: CUL-PORT

Style: Poster session

Details: TBA

Travel Support

• Due to the limited budget, selection will be applied. Partial travel expenses will be supported based on the university guidelines.

Visa Application Documents

International attendees except for citizens of Countries and Regions Exempt for VISA need a VISA to travel to Japan.

Documents for VISA application and processing time may differ depending on the applicant's nationality.

The individual who needs a VISA must prepare all the required materials and apply for it by themselves at the nearest embassy/ consulate general in their area.

Please visit the Ministry of Foreign Affairs of Japan website for details on VISA application.

We provide supporting documents for VISA applications for those who may need them. 

For documents, please contact sfeq-post-group@g.ecc.u-tokyo.ac.jp.

Accommodation Reservation

• All the WS participants are required to reserve accommodation in Kochi by themselves. 

Childcare 

We provide information/support for the use of child minding services during the workshop. 

For details, please contact sfeq-post-group@g.ecc.u-tokyo.ac.jp by early June.

Network

• Free Wi-Fi is available at venue.

Important Dates (JST) *Subject to change

• April 7

• Registration Open 

Click for Registration form (On-line participation only, Google account required）

Click for Abstract template

• June 8

  1. • Deadline for Travel Grant / Childcare applications

• Late June

  • • Selection result notification for Travel grant

    • Some participants may receive the result notification in early July. Either wait for the notification or start registration before then. If you register in advance, please confirm whether or not you will participate when you receive the notification.

• July 7

  • • Deadline for In-person participation / Presentation / Field trip / Abstract submission / Social Party / Student Part-time Job applications

• July 22

  • • Selection result notification for the Field trips

• Early August

  • • Deadline for In-person Participation（Closed on Jul. 8, due to limited capacity）

    • Program Open

Organized by

• "Science of Slow-to-Fast Earthquakes" project (See contact at the bottom of the (official website))

Co-organized by

• Joint Usage/Research Center Program of Earthquake Research Institute, the University of Tokyo
  "Comprehensive understanding of diverse seismic phenomena, their mechanisms and tectonic environment"

• Joint Usage/Research Center Program of Disaster Prevention Research Institute, Kyoto University
  “Contribution on the disaster prevention and understanding of earthquake activities in subduction zones through interdisciplinary collaborations”

Supported by

• Solid Earth Science Section, Japan Geoscience Union

Cooperated by

• Kochi Prefecture