Climate related sea-level variations over the past two millennia.

TitleClimate related sea-level variations over the past two millennia.
Publication TypeJournal Article
Year of Publication2011
AuthorsKemp AC, Horton BP, Donnelly JP, Mann ME, Vermeer M, Rahmstorf S
JournalProceedings of the National Academy of Sciences of the United States of America
Volume108
Issue27
Pagination11017–11022
Date Published07/2011
KeywordsClimate, late Holocene, ocean, Salt marsh
Abstract

We present new sea-level reconstructions for the past 2100 y 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. Sea level then increased for 400 y at a rate of 0.6 mm/y, 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/y, representing the steepest century-scale increase of the past two millennia. This rate was initiated between AD 1865 and 1892. Using an extended semiempirical modeling approach, we show that these sea-level changes are consistent with global temperature for at least the past millennium.

URLhttp://www.pnas.org/content/108/27/11017.abstract
DOI10.1073/pnas.1015619108