noaa-ocean-12315
North Atlantic 2000 Year Relative Sea Level Data
Kemp, A.C.; Horton, B.P.; Donnelly, J.P.; Mann, M.E.; Vermeer, M.; Rahmstorf, S.
North Atlantic 2000 Year Relative Sea Level Data
2011-12-13
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/12315
Investigator
A.C.
Kemp
Investigator
B.P.
Horton
Investigator
J.P.
Donnelly
Investigator
M.E.
Mann
Investigator
M.
Vermeer
Investigator
S.
Rahmstorf
earth science
paleoclimate
paleocean
reconstruction
geoscientificInformation
sea level
-120 AD
2000 AD
2070 cal yr BP
-50 cal yr BP
Complete
34.9667
42.1667
-76.3833
-70.7333
0
0
Continent
North America
United States Of America
North Carolina
Sand Point>LATITUDE 35.8833>LONGITUDE -75.6833
Continent
North America
United States Of America
North Carolina
Tump Point>LATITUDE 34.9667>LONGITUDE -76.3833
Continent
North America
United States Of America
Massachusetts
Wood Island>LATITUDE 42.1667>LONGITUDE -70.7333
None
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English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Kemp, A.C., B.P. Horton, J.P. Donnelly, M.E. Mann, M. Vermeer,
and S. Rahmstorf. 2011.
Climate related sea-level variations over the past two millennia.
Proceedings of the National Academy of Sciences,
Vol. 108 (27), pp. 11017-11022, July 5, 2011.
Published ahead of print June 20, 2011,
doi:10.1073/pnas.1015619108
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.
STUDY NOTES: North Atlantic relative sea level data points from the east coast
of the United States, in North Carolina (Sand Point and Tump Point)
and at Wood Island, Massachusetts.
In North Carolina, a modern dataset of 193 surface samples
collected from 10 salt marshes was used to develop transfer
functions to quantify the relationship between foraminifera
and elevation. We used these transfer functions to estimate
paleomarsh elevation (PME) at Sand Point and Tump Point,
North Carolina. PME is the elevation at which a sample formed
with respect to its contemporary sea level. Foraminifera
preserved in 1 cm thick samples from the Sand Point and Tump
Point cores provided the basis for estimating PME.
To reconstruct relative sea level (RSL), estimated PME was
subtracted from the measured altitude of each sample.
At Wood Island (Massachusetts), salt-marsh plants were used
as sea-level indicators. The modern mean elevation of Juncus
geradii (Jg), Spartina patens (Sp), and Distichlis spicata (Ds)
was estimated by measuring stands at the Wood Island site.
Multiple, stratigraphically ordered, samples were recovered
along the boundary between a gently sloping granite erratic
and overlying salt-marsh sediments. Identifiable remains
of Jg, Sp, and Ds were used to provide an estimate of PME.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/relative_sea_level/kemp2011rsl.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/relative_sea_level/kemp2011rsl.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11