Dimensionless parameter describing sea cliff erosion

Akira Mano, Shigenori Suzuki

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)

Abstract

Macroscopic analysis based on the energy conservation on sea cliff erosion gives a dimensionless parameter including recession rate of the cliff, wave energy flux at the breaking point, Young's modulus of rocks composing the cliff, and cliff height. This parameter was examined through field data on the Fukushima Coast where a series of soft rock cliffs extends about 50 km. The modulus was obtained by the measurement of the propagation velocity of elastic waves in the rocks and the energy flux was evaluated by the wave ray method. The long-term recession rate had been obtained from the aerial photographs. The recession rate is shown to be proportional to the wave energy flux and inversely proportional to Young's modulus. These quantities prove that the dimensionless parameter has the constant value of 0.082.

Original languageEnglish
Pages (from-to)2520-2533
Number of pages14
JournalProceedings of the Coastal Engineering Conference
Volume3
Publication statusPublished - 1998 Dec 1
EventProceedings of the 1998 26th International Conference on Coastal Engineering, ICCE-98 - Copenhagen, Denmark
Duration: 1998 Jun 221998 Jun 26

ASJC Scopus subject areas

  • Ocean Engineering

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