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Far-field test of the ICE-4G model of global isostatic response to deglaciation using empirical and theoretical holocene sea-level reconstructions for the Fiji Islands, Southwestern Pacific

Nunn, Patrick D. and Peltier, W.R. (2001) Far-field test of the ICE-4G model of global isostatic response to deglaciation using empirical and theoretical holocene sea-level reconstructions for the Fiji Islands, Southwestern Pacific. Quaternary Research, 55 (2). pp. 203-214. ISSN 0033-5894

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Abstract

Holocene paleosea – level data for Fiji, represented by 77 dates and emergence magnitudes, are presented, screened and adjusted. Most data are from coral microatolls, potentially the most precise paleosea – level indictors in this region. Holocene sea – level changes are reconstructed within five years within Fiji known to have had different late Quaternary tectonic histories. Resulting analysis suggests that postglacial sea – level in Fiji reached its present level more than 6900(*14) C yr B.P. It also suggests either that a single maximum 5650 – 3200(*14) C yr B.P. (perhaps +2.19m but more likely + 1.35 – 1.50m) occurred or that two maxima occurred 6100 – 4550 (*14) C yr B.P. ( +0.75 – 1.85m) and 3590 – 2800 (*14) C yr B.P. (+0.90 – 2.46m). Broad agreement exists between these empirical sea – level reconstructions and those derived theoretically using the ICE-4G model (predicted maximum  4000 (*14) C yr B.P.;  + 2.1 m ). This suggests that both methods of reconstructing Holocene sea – level changes are valid, as are the assumptions underpinning the ICE-4G model. The most important of these that eustatic sea level had effectively stopped rising by late middle – Holocene time [5000 – 4000yr B.P.], is confirmed by observations from Fiji.

Item Type: Journal Article
Subjects: G Geography. Anthropology. Recreation > GB Physical geography
Divisions: Office of the PVC (R&I)
Depositing User: Ms Mereoni Camailakeba
Date Deposited: 18 Nov 2001 13:00
Last Modified: 01 May 2012 15:53
URI: http://repository.usp.ac.fj/id/eprint/2833
UNSPECIFIED

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