GPS津波計で取得された津波データ

抄録

　This article introduces the tsunami records measured by the GPS buoys that were developed in Japan. Based on an idea that a GPS buoy placed offshore could enable for coastal people to evacuate against tsunami, the GPS buoy system for detecting tsunami in real-time has been developed since around 1996. Real-time kinematic (RTK-GPS) method was used to obtain coordinate solution in real-time manner and the obtained records were stored as the so-called PTNL, GGK format. The developed GPS buoy systems were able to detect five tsunamis due to large earthquakes; they are 2001 Peru earthquake (Mw8.4), 2003 Tokachi-Oki earthquake (Mw8.2), 2004 Kii-Suido-Oki earthquake (Mw7.4), 2010 Central Chile earthquake (Mw8.8), and 2011 Tohoku-Chiho-Taiheiyo-Oki earthquake (Mw9.0). All of the data of several hours to two days including these tsunamis are made available through the J-Stage Data.