Japan Geoscience Union Meeting 2024

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S (Solid Earth Sciences ) » S-CG Complex & General

[S-CG53] Reducing risks from earthquakes, tsunamis & volcanoes: new applications of realtime geophysical data

Mon. May 27, 2024 5:15 PM - 6:45 PM Poster Hall (Exhibition Hall 6, Makuhari Messe)

convener:Masashi Ogiso(Meteorological Research Institute, Japan Meteorological Agency), Masumi Yamada(Disaster Prevention Research Institute, Kyoto University), Yusaku Ohta(Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University), Naotaka YAMAMOTO CHIKASADA(National Research Institute for Earth Science and Disaster Resilience)

5:15 PM - 6:45 PM

[SCG53-P05] Development of the semi-real-time tsunami observation waveform collection system

*Naotaka YAMAMOTO CHIKASADA1 (1.National Research Institute for Earth Science and Disaster Resilience)

Keywords:Tsunami, Observation waveform

We are constructing the Tsunami waveform Database (TwDB, doi:10.17598/NIED.0024) to manage and publish tsunami waveform data observed by tide gauges and ocean bottom pressure etc., which are dispersed different organizations and difficult to obtain for tsunami researchers. This database consists of a source information database, an observed waveform database, and a calculated waveform database for the past tsunamis, which the observed waveform data exist. However, this database does not have a function to collect real-time waveform for the current tsunami and cannot be used for immediate analysis. On the other hand, the NB system (Nakamura and Baba, 2016), which calculates tsunami waveforms in each region in semi-real-time from the estimated seismic source information on hypocenter, magnitude and mechanism, can be compared with the observed waveforms. In this study, we are developing a system that automatically collects real-time tsunami waveform data, such as the SEA LEVEL STATION MONITORING FACILITY (doi:10.14284/482) operated by IOC/UNESCO, DART data from the NOAA/National Data Buoy Center, and real time tide data from the Hydrographic and Oceanographic Department, Japan Coast Guard, and publishes them in the Tsunami waveform Database (TwDB), if possible. Because these data should be released while confirming the possibility of redistribution and license. We have manually collected and released the data of the tsunami waveforms caused by the submarine volcanic eruption near the Tonga Islands in January 2022 and the tsunami caused by the 2024 Noto Peninsula earthquake in January 2024. In addition, we are preparing the location information of the observation stations.
The Tsunami waveform Database (TwDB) has been constructed with the support of JSPS KAKENHI (database) JP20HP8014, and is continually under construct with the support of JP21HP8018, JP22HP8018, and JP23HP8015.