A preliminary study of the distribution, sizes and orientations of large reef-top coral boulders deposited by extreme waves at Makemo Atoll, French Polynesia

Lau, A. Y. Annie, Etienne, Samuel, Terry, James P., Switzer, Adam D. and Lee, Ying Sin (2014) A preliminary study of the distribution, sizes and orientations of large reef-top coral boulders deposited by extreme waves at Makemo Atoll, French Polynesia. Journal of Coastal Research, 70 272-277. doi:10.2112/SI70-046.1


Author Lau, A. Y. Annie
Etienne, Samuel
Terry, James P.
Switzer, Adam D.
Lee, Ying Sin
Title A preliminary study of the distribution, sizes and orientations of large reef-top coral boulders deposited by extreme waves at Makemo Atoll, French Polynesia
Journal name Journal of Coastal Research   Check publisher's open access policy
ISSN 1551-5036
0749-0208
Publication date 2014-04-01
Year available 2014
Sub-type Article (original research)
DOI 10.2112/SI70-046.1
Open Access Status Not Open Access
Volume 70
Start page 272
End page 277
Total pages 194
Place of publication Coconut Creek, FL United States
Publisher Coastal Education Research Foundation
Language eng
Abstract The history of extreme wave events on the Tuamotu Archipelago of French Polynesia in the central South Pacific remains poorly understood, even though huge wave deposited coastal boulders were identified in the area decades ago. Numerous large coral boulders deposited on the reef flats of Makemo Atoll (16.56°S, 143.73°W) were investigated in this study in an attempt to understand the characteristics of extreme wave events in the region. The positions, dimensions and orientations of 286 boulders were measured along over 15 km of the northern coastline of the atoll. The biggest clast measures over 130 m3 in size and it weighs more than 310 tonnes. The size-distribution of the Makemo boulders suggests that these huge clasts were transported by extreme storm waves. The long-axes of boulders are mostly aligned parallel to sub-parallel to the shoreline. However, a relationship between the boulder size and orientation was not found, suggesting the orientation of boulders is not representative of boulder transport mode.
Keyword Storms
Tropical cyclones
South Pacific islands
Boulder transport
Extreme waves
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID NRF-RF2010-04
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Geography, Planning and Environmental Management Publications
 
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Created: Wed, 06 Apr 2016, 22:52:15 EST by Annie Lau on behalf of School of Geography, Planning & Env Management