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PALEOCEANOGRAPHY

Bay of Plenty Foraminiferal Data and SST Reconstruction from 16KyrBP to Present

Map of data site
Samson, C.R., E.L. Sikes, and W.R. Howard. 2005. Deglacial paleoceanographic history of the Bay of Plenty, New Zealand. Paleoceanography 20, 4017.
Data Coverage North: -36.92 * South: -36.92
West: 177.43 * East: 177.43
Altitude: -2045 m

Start Year: 16210 14C yr BP * End Year: 590 14C yr BP

Data:     Please Cite Data Contributors!
  samson2005
  h214-tab.txt

Summary:

We present sea surface temperature (SST) records with centennial-scale resolution from the Bay of Plenty, north of New Zealand. Foraminiferal assemblage-based paleo-SST estimates provide a deglacial record of SST since 16.5 14C ka. Average Holocene SSTs are 15.6°C for winter and 20.3°C for summer, whereas average glacial values were 14.2°C for winter and 19.5°C for summer. Compared to modern time, cooling of SSTs at the Last Glacial Maximum (LGM) was ~0.9°C in winter and ~1.5°C in summer. The shift from glacial to Holocene temperatures began at 14.25 14C ka, warming by ~2°C until 12.85 14C ka when temperatures dipped back to glacial values at 11.65 14C ka. The timing of this return to glacial-like SST correlates well with the Antarctic Cold Reversal (ACR) rather than the Younger Dryas and documents that the influence of the ACR extended into the subtropics of the Southern Hemisphere, at least in this region of the southwest Pacific. By 10.55 14C ka an SST maximum in summer SSTs of up to 3°C warmer than modern occurred (~24°C), after which SST dropped, remaining at present-day temperatures since 9.3 14C ka. This early Holocene climatic optimum has been widely noted in the Southern Ocean, and this record indicates that this phenomenon also extended into the subtropics to the north of New Zealand.
More Info on Paleoceanography Data

Parameters:

Globorotalia truncatulinoides (left coiling); Neogloboquadrina dutertrei; Foraminifers Fragments; delta C13 PDB (Globigerinoides ruber); Globigerina calida; Globigerinella aequilateralis; Globorotalia crassaformis; Globigerinoides sacculifer; Globigerinoides ruber; Squared-chord distance; Sea Surface Temperature, modern analog technique (cold season); radiocarbon years before 1950AD; delta O18 PDB (Globigerinoides ruber); Globorotalia hirsuta; Planktonic foraminifers; delta O18 PDB (Cibicidoides spp.); Globigerina falconensis; Globigerinita glutinata; Globorotalia truncatulinoides (right coiling); Pulleniatina obliquiloculata; Neogloboquadrina pachyderma (left coiling); Sea Surface Temperature, modern analog technique (warm season); delta O18 PDB (Globigerina bulloides); Globigerina bulloides; Globigerinoides sacculifer (with sac); Globorotalia scitula; Neogloboquadrina pachyderma (right coiling); Globigerinoides sacculifer (no sac); Globorotalia inflata; Unidentified planktonic foraminifers; Radiocarbon ages; delta C13 PDB (Globigerina bulloides); Globigerinoides ruber (white); Orbulina universa; Benthic Foraminifers; delta C13 PDB (Cibicidoides spp.); Globigerina quinquiloba; Globigerina rubescens

Complete XML Record:

noaa-ocean-2647  (Last Revised: 2008-04-10 )

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