Journal
SCIENTIFIC REPORTS
Volume 12, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41598-022-10078-2
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Funding
- East Nippon Expressway Company Limited
- Geospatial Information Authority of Japan
- Ministry of Land, Infrastructure, Transport and Tourism
- Ministry of Education, Culture, Sports, Science and Technology
- Japan Society for the Promotion of Science
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Researchers using the Tokyo-Bay Seafloor Hyper-Kilometric Submarine Deep Detector have detected meteotsunami-like periodic oscillation in the underwater highway, which provides valuable insights into understanding meteotsunamis.
Meteorological-tsunami-like (or meteotsunami-like) periodic oscillation was muographically detected with the Tokyo-Bay Seafloor Hyper-Kilometric Submarine Deep Detector (TS-HKMSDD) deployed in the underwater highway called the Trans-Tokyo Bay Expressway or Tokyo Bay Aqua-Line (TBAL). It was detected right after the arrival of the 2021 Typhoon-16 that passed through the region 400 km south of the bay. The measured oscillation period and decay time were respectively 3 h and 10 h. These measurements were found to be consistent with previous tide gauge measurements. Meteotsunamis are known to take place in bays and lakes, and the temporal and spatial characteristics of meteotsunamis are similar to seismic tsunamis. However, their generation and propagation mechanisms are not well understood. The current result indicates that a combination of muography and trans-bay or trans-lake underwater tunnels will offer an additional tool to measure meteotsunamis at locations where tide gauges are unavailable.
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