Waves, coastal boulder deposits and the importance of the pre-transport setting

Nott, Jonathan (2003) Waves, coastal boulder deposits and the importance of the pre-transport setting. Earth and Planetary Science Letters, 210 (1-2). pp. 269-276.

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Abstract

The pre-transport environment of a coastal boulder along with its shape, size and density determines the height of wave required for it to be transported. Different forces act on sub-aerial boulders as opposed to submerged boulders when struck by a wave. Boulders derived from joint bounded blocks on shore platforms predominantly experience lift force and require a wave of greater height to be transported than boulders in other environments. No one equation is applicable to determine the height of palaeo-waves responsible for depositing a field or ridge of imbricated coastal boulders. A range of equations and their derivation is presented here which can be applied to the respective pre-transport environment of a boulder. Such an approach is necessary when attempting to reconstruct the frequency and magnitude of past coastal wave hazards and for differentiating between tsunami and storm wave deposited boulder fields.

Item ID: 4426
Item Type: Article (Refereed Research - C1)
Keywords: coastal boulder deposits; hydrodynamic equations; storm waves; tsunami; Western Australia
ISSN: 1385-013X
Date Deposited: 11 Jun 2009 01:06
FoR Codes: 04 EARTH SCIENCES > 0406 Physical Geography and Environmental Geoscience > 040601 Geomorphology and Regolith and Landscape Evolution @ 33%
04 EARTH SCIENCES > 0405 Oceanography > 040503 Physical Oceanography @ 34%
04 EARTH SCIENCES > 0406 Physical Geography and Environmental Geoscience > 040699 Physical Geography and Environmental Geoscience not elsewhere classified @ 33%
SEO Codes: 96 ENVIRONMENT > 9699 Other Environment > 969902 Marine Oceanic Processes (excl. Climate Related) @ 51%
96 ENVIRONMENT > 9611 Physical and Chemical Conditions of Water > 961104 Physical and Chemical Conditions of Water in Marine Environments @ 49%
Citation Count from Web of Science Web of Science 110
Downloads: Total: 1
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