Long Period Beat Phenomena of Swells in a Coastal Water of Toyama Wan

The large swells invade the Toyama Wan from October to April every year, and cause wave disasters such as ship dragging anchor, grounding and so on, around the Toyama Wan. It is considered that the wave disasters are mainly caused by swells and water level fluctuations with long periods, and so beat phenomena of swells and periodic water level fluctuations are investigated using water level data observed from December, 2017 to March, 2018. The following results are obtained. (1) There were proper oscillations with periods of about 1.5 minutes, 13 minutes, 30 minutes and so on, in the coastal water of Toyama Wan. (2)It is confirmed that swells beat with period of about 30 minutes due to the periodic water level fluctuation with period of about 30 minutes. These results suggest that swells beat with more long period such as a period of about 12 hours, due to ocean tide. It is a future problem to investigate a possibility that swells beat with more long period such as a period of about 12 hours, due to ocean tide.

• Record URL:
  https://doi.org/10.9749/jin.140.55
• Record URL:
  https://www.jstage.jst.go.jp/article/jin/140/0/140_55/_pdf
• 
• Record URL:
  https://scholar.google.com/scholar_lookup?title=Long%20Period%20Beat%20Phenomena%20of%20Swells%20in%20a%20Coastal%20Water%20of%20Toyama%20Wan&author=M.%20KAWAI&author=M.%20TAMURA&author=M.%20SHIGETA&publication_year=2019
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03887405
• Authors:
  • Kawai, Masashi
  • Tamura, Masahiko
  • Shigeta, Makoto
• Publication Date: 2019

Language

• English
• Japanese

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 55-60
• Serial:
  • The Journal of Japan Institute of Navigation
  • Volume: 140
  • Publisher: Japan Institute of Navigation
  • ISSN: 0388-7405
  • EISSN: 2187-3275
  • Serial URL: https://www.jstage.jst.go.jp/browse/jin/-char/en

Subject/Index Terms

• TRT Terms: Coasts; Ocean waves; Oscillation; Properties of water waves; Tidal waves
• Geographic Terms: Toyoma Wan (Japan)
• Subject Areas: Marine Transportation; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 01719602
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Oct 21 2019 9:46AM