Title

Reconsidering the seawater-density parameter in hydrodynamic flow transport equations for coastal boulders

Author First name, Last name, Institution

James P. Terry, Zayed University
Shoaib A. Malik, Zayed University

Document Type

Article

Source of Publication

New Zealand Journal of Geology and Geophysics

Publication Date

7-2-2020

Abstract

© 2020 The Royal Society of New Zealand. Existing hydrodynamic flow transport equations for coastal boulder transport are useful for estimating post-event the characteristics of extreme storm waves and tsunamis. However, the effect of suspended sediment concentration (SSC) on seawater density is normally ignored. This is unrealistic given that turbulent runup flows easily entrain available fine sediment. Proper consideration of SSC can be encouraged by including a mixed-fluid density coefficient (Cρ) as a multiplier for clear-seawater density, where elevated sediment content can be assumed and estimated. Minimum flow velocities required for boulder transport are shown to reduce as sediment concentrations increase.

ISSN

0028-8306

Publisher

Taylor and Francis Asia Pacific

Volume

63

Issue

3

First Page

363

Last Page

370

Disciplines

Life Sciences

Keywords

Coastal boulders, flow transport equations, seawater density, sediment concentration, storm waves, tsunamis

Scopus ID

85078785150

Indexed in Scopus

yes

Open Access

no

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