Physics
Scientific paper
Jan 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3502717g&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 2, CiteID L02717
Physics
11
Global Change: Abrupt/Rapid Climate Change (4901, 8408), Global Change: Sea Level Change (1222, 1225, 4556), Biogeosciences: Macro- And Micropaleontology (3030, 4944), Geochronology: Quaternary Geochronology
Scientific paper
Sea levels in New Zealand have remained relatively stable throughout the past 7000 years, but salt-marsh cores from southern New Zealand show evidence of a recent rapid rise. To date and quantify this rise we present a proxy sea-level record spanning the past 500 years for Pounawea, southeastern New Zealand, based on foraminiferal analyses. Ages for ten sea-level index points are established from AMS14C, Pb concentrations, stable Pb isotopes, pollen markers, charcoal concentrations and 137Cs. Sea level was rising slowly (0.3 +/- 0.3 mm yr-1) from AD 1500 to AD 1900, but during the 20th century the rate increased to 2.8 +/- 0.5 mm yr-1, in agreement with instrumental measurements commencing in 1924. This is the first sea-level record from the southern hemisphere showing a significantly higher rate of sea-level rise during the 20th century as compared with preceding centuries.
Gehrels Roland W.
Hayward Bruce W.
Newnham Rewi M.
Southall Katherine E.
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