Sendai, Japan - University of Tohoku

PLEASE NOTE:  Due to the global impact of the Covid-19 virus, the organizers have decided to postpone this workshop until 2021. 

There may be some additional meetings in the fall of 2020 that we plan to organize, FYI.



2020 GNSS Tsunami Early Warning - II

Monday, June 1 - Friday, June 5

Tohoku University, Sendai, Japan

Workshop Purpose

We are currently organizing a workshop in Sendai, Japan from June 1-5, 2020, to develop an implementation plan for a future Global Navigation Satellite System Tsunami Early Warning System (GNSS-TEWS).  The proposed workshop follows a very successful workshop funded by NASA held during July 25-27, 2017 in Sendai, Japan.  The GNSS Tsunami Early Warning Systems workshop (GTEWS 2017) was organized in collaboration with the Global Geodetic Observing System (GGOS) of the International Association of Geodesy (IAG),  the Association of Pacific Rim Universities (APRU) Multi-Hazards Hub at Tohoku University in Sendai, and the International Research Institute of Disaster Science (IRIDeS) at Tohoku University.  The previous workshop report was published by the APRU and can be found on the APRU website.  The purpose of this next workshop is to write a plan to implement the recommendations of the previous workshop, and in particular, to discuss details of implementation, including data sharing, software and hardware requirements, and roles of the various participants. 

The goals of this workshop are to:

  • Confirm the organization of a data group/center that can provide real-time GNSS resources (time series. networks, processing centers, telecommunication, etc.) that will be necessary to develop real-time GNSS early warning capabilities throughout the entire Pacific Rim region.  This need not be the full constellation of existing stations, but could be a smaller subset of existing stations needed to define a prototype network.
  • Assign responsibilities to groups for the development of the needed capabilities in data processing, software and analysis, and related tasks.
  • Specify a realistic schedule and timeline for development of a prototype system in the Tohoku or other tsunami-genic region on the Pacific Rim. 
  • Develop a preliminary plan for coordination with emergency response agencies and other interested parties.

The Organizing Committee encourages your participation in a Global Navigation Satellite System Tsunami Early Warning System (GNSS-TEWS) workshop in Sendai. We encourage all interested participants to attend. Some level of travel support will be available to invited speakers. The primary product of the workshop will be a report to identify strategies needed to understand the data needs for a Pacific-wide activity involving the Asia-Pacific Economic Cooperation (APEC) economies as well as other non-APEC economies.

Organizing Committee

  • John Rundle, University of California, Davis (Co-Chair)
  • Shunichi Koshimura, Tohoku University, Sendai, Japan (Co-Chair)
  • Yusaku Ohta, Tohoku University, Sendai, Japan (Co-Chair)
  • John LaBrecque, Global Geodetic Observing System (Co-Chair)
  • Yuichi Ono, Tohoku University, Sendai, Japan
  • Takako Izumi, Tohoku University, Sendai, Japan
  • Allison Craddock, Jet Propulsion Laboratory, Pasadena
  • Basara Miyahara, Geospatial Information Authority, Japan
  • Diego Arcas, National Oceanic and Atmospheric Administration
  • Lorraine Hwang, University of California, Davis

Important Dates

  • Registration Closes: April 15, 2020
  • Participants notified beginning May 1, 2020


All participants must register.

  • Registration is limited to 50 attendees.  Registration does not guarantee your attendance.
  • Limited travel support will be available to invited speakers.


Workshop is Sponsored by:
  • The Asia-Pacific Center for Theoretical Physics
  • Private donations
  • National Aeronautics and Space Administration
  • National Oceanic and Atmospheric Administration
Co-Sponsored by:
  • Association of Pacific Rim Universities Multihazards Hub
  • Tohoku University, Sendai, Japan
  • APRU-IRIDeS Multihazards Program
  • Global Geodetic Observing System
  • Geospatial Information Authority, Japan

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Tags: workshop  GNSS  tews  2020  
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