Spectrum Analysis for Morphological Features in Intertidal Flats with Various Characteristics

• WATABE Yoichi

  Port and Airport Research Institute

• SASSA Shinji

  Port and Airport Research Institute

• HAYASHI Koichi

  Oyo Corporation

Bibliographic Information

Other Title

• 多種多様な干潟で得られた干潟土砂堆積構造のスペクトル解析

Abstract

In this study, shear wave velocity structures of sandy flats, muddy flats, and subtropical flats were evaluated by means of multi-channel analysis of surface waves (MASW). Spectrum analysis along the cross-shore direction was carried out in order to quantitatively characterize the dominant wavelength for the variations of both shear wave velocity and morphological structures of intertidal flats with various scales and soil types. In the intertidal flats with multi bar-trough structure, dominant wavelengths in a range of 40 to 90 m were obtained, while in the muddy flat or huge-scale homogeneous sandy flat, any dominant wavelength was not obtained. In subtropical intertidal flats, the dominant wavelength was strongly influenced by prominent lime rock rather than the morphological surface variation.

Journal

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

  Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 65 (1), 1096-1100, 2009

  Japan Society of Civil Engineers

Keywords

• tidalflat
• spectrum analysis
• MASW
• morphological features

Details

• CRID: 1390001205316629376
• NII Article ID: 130004956217
• DOI: 10.2208/kaigan.65.1096
• ISSN: 18838944
• ISSN: 18842399
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed