|
THE TIMING AND MAGNITUDE OF A HOLOCENE SEA-LEVEL HIGHSTAND IN THE SUNDA SHELF: A REVIEW a) Department of Geological Engineering, Institut Teknologi Bandung, Jl. Ganesha No.10, Bandung, West Java, Indonesia 40132 Abstract Knowledge on the timing and magnitude of past sea-level changes in ^far-field^ sites is essential for studying sea-level change, as one of climate change mitigation measures, and for the hope of understanding future sea-level change. Reconstructions of past sea levels, especially on the Holocene Sunda shelf, have been performed by several researchers. The relative sea-level change signal on the Sunda shelf is characterized by the presence of the Mid-Holocene High Stand (MHHS). However, differences in sea level magnitude during the mid-Holocene highstand in this region are controversial. Collected a total of 27 Holocene sea-level reconstruction studies in the Sunda shelf region and reviewed them by first dividing the study area into his five geographic subregions. Each researcher used a different sea level index, such as mangroves or peat, shells, pollen, tidal deposits, diatoms, delta deposits, beach rocks and ridge deposits, shells and corals, sea notches, oysters, microatolls, bivalves. Based on critical assessments of validated relative sea-level indices, we found that there are serious problems related to the correct interpretation of sea-level indices and their relationship to mean sea level, and the quality of dating. A consistent methodology across the Sunda continental shelf for analyzing sea level data is lacking. Future sea level analyzes from far-field sites should include the use of consistent methodologies that allow meaningful comparisons between studies. This will help settle the ongoing debate about the magnitude and timing of MHHS. Keywords: mid-Holocene, sea level, highstand, Paparan Sunda Topic: Ocean Sciences |
| The 2nd ISEST Conference | Conference Management System |