期刊
JOURNAL OF QUATERNARY SCIENCE
卷 28, 期 4, 页码 403-411出版社
WILEY
DOI: 10.1002/jqs.2634
关键词
sea level; Holocene; sediment compaction; tidal range; index points
资金
- NICRR [DE-FC02-06ER64298]
- National Science Foundation [EAR 0717364, 1052848, 0951686]
- NOAA [NA11OAR4310101]
- Yale Climate and Energy Institute post-doctoral fellowship
- Earthwatch Institute Student Challenge Award Program
- Division Of Earth Sciences
- Directorate For Geosciences [1419366, 1052848, 0951686] Funding Source: National Science Foundation
We investigated the effect of tidal-range change and sediment compaction on reconstructions of Holocene relative sea level (RSL) in New Jersey, USA. We updated a published sea-level database to generate 50 sea-level index points and ten limiting dates that define continuously rising RSL in New Jersey during the Holocene. There is scatter among the index points, particularly those older than 7 ka. A numerical model estimated that paleotidal range was relatively constant during the mid and late Holocene, but rapidly increased between 9 and 8 ka, leading to an underestimation of RSL by approximate to 0.5m. We adjusted the sea-level index points using the paleotidal model prior to assessing the influence of compaction on organic samples with clastic deposits above and below (an intercalated sea-level index point). We found a significant relationship (p=0.01) with the thickness of the overburden (r=0.85). We altered the altitude of intercalated index points using this simple stratigraphic relationship, which reduced vertical scatter in sea-level reconstructions. We conclude that RSL rose at an average rate of 4mm a1 from 10 ka to 6 ka, 2mm a1 from 6 ka to 2 ka, and 1.3mm a1 from 2 ka to AD 1900. Copyright (c) 2013 John Wiley & Sons, Ltd.
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