Mechanisms of Water Retention Dynamics in Intertidal Sandy Flats and Beaches

• SASSA Shinji

  (独法) 港湾空港技術研究所地盤・構造部

• WATABE Yoichi

  (独法) 港湾空港技術研究所地盤・構造部土質研究室

• ISHII Hirokazu

  中央大学大学院理工学研究科

Bibliographic Information

Other Title

• 干潟と砂浜の保水動態機構と許容地下水位の解明

Abstract

In this paper we describe and clarify the mechanisms of water retention dynamics in intertidal sandy flats and beaches. This was done by performing field observations, laboratory experiments and theoretical analyses, which developed in an interactive manner. The combined results demonstrate that the difference in the water retention dynamics for sandy flats and beaches arises from the difference in pore water migrations that take place around air entry suctions for both types of the soils. Furthermore, it is found that for a given sandy soil, there exists a critical ground water level above which the degree of saturation does not decline. Two quantitative index are proposed for assessing and creating such water retention fields. The results obtained can directly apply to the design and management of artificial sandy flats.

Journal

• PROCEEDINGS OF COASTAL ENGINEERING, JSCE

  PROCEEDINGS OF COASTAL ENGINEERING, JSCE 54 1151-1155, 2007

  Japan Society of Civil Engineers

Keywords

• General Chemical Engineering

Details

• CRID: 1390282679526166272
• NII Article ID: 130003807954
• DOI: 10.2208/proce1989.54.1151
• ISSN: 18848222
• ISSN: 09167897
• ISSN: http://id.crossref.org/issn/09167897
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed