Publication Date:
2022-05-25
Description:
Author Posting. © The Author(s), 2011. This is the author's version of the work. It is posted here by permission of National Academy of Sciences for personal use, not for redistribution. The definitive version was published in Proceedings of the National Academy of Sciences of the United States of America 108 (2011): 11017-11022, doi:10.1073/pnas.1015619108.
Description:
We present new sea-level reconstructions for the past 2100 years based on salt-marsh
sedimentary sequences from the US Atlantic coast. The data from North Carolina reveal
four phases of persistent sea-level change after correction for glacial isostatic adjustment.
Sea level was stable from at least BC 100 until AD 950. It then increased for 400 years at
a rate of 0.6 mm/yr, followed by a further period of stable, or slightly falling, sea level
that persisted until the late 19th century. Since then, sea level has risen at an average rate
of 2.1 mm/yr, representing the steepest, century-scale increase of the past two millennia.
This rate was initiated between AD 1865 and 1892. Using an extended semi-empirical
modeling approach, we show that these sea-level changes are consistent with global
temperature for at least the past millennium.
Description:
Research was supported by NSF grants (EAR-0951686) to BPH and JPD. ACK thanks a
NOSAMS internship, UPenn paleontology stipend and grants from GSA and NAMS.
North Carolina sea-level research was funded by NOAA (NA05NOS4781182), USGS
(02ERAG0044) and NSF (EAR-0717364) grants to BPH with S. Culver and R. Corbett
(East Carolina University). JPD (EAR-0309129) and MEM (ATM-0542356)
acknowledge NSF support. MV acknowledges Academy of Finland Project 123113 and
COST Action ES0701.
Repository Name:
Woods Hole Open Access Server
Type:
Preprint
Format:
application/pdf
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