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Dive into the research topics where William B. Curry is active.

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Featured researches published by William B. Curry.


Paleoceanography | 2015

What do benthic δ13C and δ18O data tell us about Atlantic circulation during Heinrich Stadial 1

Delia W. Oppo; William B. Curry; Jerry F. McManus

Approximately synchronous with the onset of Heinrich Stadial 1 (HS1), δ13C decreased throughout most of the upper (~1000–2500 m) Atlantic, and at some deeper North Atlantic sites. This early deglacial δ13C decrease has been alternatively attributed to a reduced fraction of high-δ13C North Atlantic Deep Water (NADW) or to a decrease in the NADW δ13C source value. Here we present new benthic δ18O and δ13C records from three relatively shallow (~1450–1650 m) subpolar Northeast Atlantic cores. With published data from other cores, these data form a depth transect (~1200–3900 m) in the subpolar Northeast Atlantic. We compare Last Glacial Maximum (LGM) and HS1 data from this transect with data from a depth transect of cores from the Brazil Margin. The largest LGM-to-HS1 decreases in both benthic δ13C and δ18O occurred in upper waters containing the highest NADW fraction during the LGM. We show that the δ13C decrease can be explained entirely by a lower NADW δ13C source value, entirely by a decrease in the proportion of NADW relative to Southern Ocean Water, or by a combination of these mechanisms. However, building on insights from model simulations, we hypothesize that reduced ventilation due to a weakened but still active Atlantic Meridional Overturning Circulation also contributed to the low δ13C values in the upper North Atlantic. We suggest that the benthic δ18O gradients above ~2300 m at both core transects indicate the depth to which heat and North Atlantic deglacial freshwater had mixed into the subsurface ocean by early HS1.


Geology | 2017

Increased hurricane frequency near Florida during Younger Dryas Atlantic Meridional Overturning Circulation slowdown

Michael R. Toomey; Robert Korty; Jeffrey P. Donnelly; Peter J. van Hengstum; William B. Curry

15 The risk posed by intensification of North Atlantic hurricane activity remains 16 controversial, in part due to a lack of available storm proxy records that extend beyond 17 the relatively stable climates of the late Holocene. Here we present a record of storm18 triggered turbidite deposition offshore the Dry Tortugas, south Florida, USA, that spans 19 abrupt transitions in North Atlantic sea-surface temperature and Atlantic Meridional 20 Overturning Circulation (AMOC) during the Younger Dryas (12.9–11.7 k.y. B.P.). 21 Despite potentially hostile conditions for cyclogenesis in the tropical North Atlantic at 22


Archive | 2005

A SIMS calibration of benthic foraminiferal Mg/Ca

William B. Curry; Thomas M. Marchitto


Archive | 2001

Quantitative Reconstruction of Glacial/Interglacial Carbonate Ion Concentrations in the Deep Pacific Using Zn and Cd in Benthic Foraminifera

Thomas M. Marchitto; Jean Lynch-Stieglitz; William B. Curry; Delia W. Oppo


Supplement to: Came, RE et al. (2008): Deglacial variability in the surface return flow of the Atlantic meridional overturning circulation. Paleoceanography, 23(1), PA1217, https://doi.org/10.1029/2007PA001450 | 2014

(Table 1) Age determination of sediment cores OCE205-2-100GGGC and KNR166-2-31

Rosemarie E. Came; Delia W. Oppo; William B. Curry; Jean Lynch-Stieglitz


Supplement to: Toomey, MR et al. (2013): Reconstructing 7000 years of North Atlantic hurricane variability using deep-sea sediment cores from the western Great Bahama Bank. Paleoceanography, 28(1), 31-41, https://doi.org/10.1002/palo.20012 | 2013

Age determination of North Atlantic sediment cores

Michael R. Toomey; William B. Curry; Jeffrey P. Donnelly; Peter J vam Hengstum


Archive | 2008

Physical and chemical evidence for past variations in bottom waters along the Reykjanes Ridge south of Iceland

Jerry F. McManus; Delia W. Oppo; S. K. Praetorius; William B. Curry


Archive | 2008

Did Meltwater Drive the Ocean's AMOC?

Jerry F. McManus; Delia W. Oppo; William B. Curry; S. K. Praetorius


Archive | 2007

Calibration of the carbonate `clumped isotope' paleotemperature proxy using mollusc shells and benthic foraminiferal tests

Rosemarie E. Came; William B. Curry; C. R. Weidman; John M. Eiler


Archive | 2007

Antarctic Intermediate Water: Passive Responder or Climate Trigger?

Delia W. Oppo; Rosemarie E. Came; William B. Curry; M. C. Makou

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Rosemarie E. Came

University of New Hampshire

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Jean Lynch-Stieglitz

Georgia Institute of Technology

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Jeffrey P. Donnelly

University of Massachusetts Amherst

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Michael R. Toomey

United States Geological Survey

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M. C. Makou

Woods Hole Oceanographic Institution

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