Morphology of largeHalimeda bioherms,eastern Java sea (Indonesia): A side-scan sonar study |
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| Authors: | Harry H Roberts Charles V Phipps Lukman L Effendi |
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| Institution: | (1) Coastal Studies Institute, Louisiana State University, 70803-7527 Baton Rouge, LA;(2) Department of Geology and Geophysics, University of Sydney, Edgeworth David Building, NSW 2006 Sydney, Australia;(3) National Institute of Oceanology, P.O. Box 580 DAK, Jakarta, Utara, Indonesia |
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| Abstract: | The most extensive and thickestHalimeda bioherms reported from modern seas occur along both open and protected margins of Kalukalukuang Bank, eastern Java Sea (Indonesia). Seismic profiles suggest these features average 20 to 30 m thick (maximum  50 m) and developed over large areas by coalescence of individual mounds. Bioherm morphologies range from numerous small mounds ( 10–20 m diameter) through  hay-stack features ( 100 m diameter) to broad swells. Some modern bank bioherms display surface forms that appear related to onbank flow from Makassar Strait. Upwelling of cold, nutritive water is likely responsible for unusualHalimeda productivity and large bioherm development. |
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