Influences of Time Integration on the Accuracy of Inversion based on Ocean Radar

• FUJI Ryotaro

  National Institute for Land and Infrastructure Management

• HINATA Hirofumi

  National Institute for Land and Infrastructure Management

• FUJII Satoshi

  University of the Ryukyus

• TAKAHASHI Tomoyuki

  Kansai University

Bibliographic Information

Other Title

• 海洋レーダを利用したインバージョンに対するレーダ観測時間の影響
• カイヨウ レーダ オ リヨウ シタ インバージョン ニ タイスル レーダ カンソク ジカン ノ エイキョウ

Abstract

The radial velocity of ocean radar is analyzed by integrating backscattered spectra by ocean surface waves in a certain period of time. This study examined the influence of the integration time on the accuracy of the estimation of tsunami inversion for various predominant periods of incoming tsunami waves based on numerical experiments performed with a simple bathymetry. It found that the accuracy depends significantly on the relation between the predominant period and the integration time. The results of numerical experiments concerning the 2011 Japan tsunami indicate that a longer integration time, which corresponds to higher velocity resolution, is permitted as long as the influence is small.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 69 (2), I_436-I_440, 2013

  Japan Society of Civil Engineers

Keywords

• tsunami inversion
• ocean radar
• observation period
• predominant period

Details

• CRID: 1390001205319012608
• NII Article ID: 130004551114
• NII Book ID: AA12508551
• DOI: 10.2208/kaigan.69.i_436
• ISSN: 18838944
• ISSN: 18842399
• HANDLE: 10112/8852
• NDL BIB ID: 025022587
• Web Site: https://kansai-u.repo.nii.ac.jp/records/666
• Web Site: http://id.ndl.go.jp/bib/025022587
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025022587
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed