Grainsize, composition and bedform patterns in a fringing reef system

Research output: Chapter in Book/Conference paperConference paper


Predicting future changes to coastlines fringed by coral reefs requires quantifying sediment budgets in these environments. To do this we must understand the physical parameters and biological composition of sediment deposits; the ecology of the calcifying (production) community; and the dominant sediment transport mechanisms. This study collected sedimentological, biological and hydrodynamic measurements at a section of a major fringing reef system along Australia's northwest coast, Ningaloo Reef. Sediment in the system is predominantly medium, moderately sorted, coarse skewed sand. Coral fragments are the dominant sediment constituent, however, live coral accounts for less than 5% of the calcifying community. Wave-driven shear stresses are ~5 N/m2 and oriented perpendicular to lagoonal sand ripples; current-driven shear stresses are ~0.5 N/m2 and oriented parallel to ripple crests. It is suggested here that wavedriven transport is the principle mechanism for supplying sediment to the system and driving ripple migration shoreward through the lagoon.
Original languageEnglish
Title of host publicationThe Proceedings of the Coastal Sediments 2015
EditorsPing Wang, Julie D Rosati, Jun Cheng
Place of PublicationSan Diego, California
PublisherWorld Scientific Publishing
ISBN (Electronic)9789814689979
Publication statusPublished - Apr 2015
EventCoastal Sediments 2015 - San Diego, United States
Duration: 11 May 201515 May 2015


ConferenceCoastal Sediments 2015
CountryUnited States
CitySan Diego

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