Heather M Benway
Oregon State University
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Featured researches published by Heather M Benway.
Paleoceanography | 2006
Heather M Benway; Alan C. Mix; Brian A. Haley; Gary P. Klinkhammer
Multiproxy geologic records of δ18O and Mg/Ca in fossil foraminifera from sediments under the Eastern Pacific Warm Pool (EPWP) region west of Central America document variations in upper ocean temperature, pycnocline strength, and salinity (i.e., net precipitation) over the past 30 kyr. Although evident in the paleotemperature record, there is no glacial-interglacial difference in paleosalinity, suggesting that tropical hydrologic changes do not respond passively to high-latitude ice sheets and oceans. Millennial variations in paleosalinity with amplitudes as high as ∼4 practical salinity units occur with a dominant period of ∼3–5 ky during the glacial/deglacial interval and ∼1.0–1.5 ky during the Holocene. The amplitude of the EPWP paleosalinity changes greatly exceeds that of published Caribbean and western tropical Pacific paleosalinity records. EPWP paleosalinity changes correspond to millennial-scale climate changes in the surface and deep Atlantic and the high northern latitudes, with generally higher (lower) paleosalinity during cold (warm) events. In addition to Intertropical Convergence Zone (ITCZ) dynamics, which play an important role in tropical hydrologic variability, changes in Atlantic-Pacific moisture transport, which is closely linked to ITCZ dynamics, may also contribute to hydrologic variations in the EPWP. Calculations of interbasin salinity average and interbasin salinity contrast between the EPWP and the Caribbean help differentiate long-term changes in mean ITCZ position and Atlantic-Pacific moisture transport, respectively.
Nature Geoscience | 2009
Claire Waelbroeck; André Paul; Michal Kucera; Antoni Rosell-Melé; Mara Weinelt; Ralph R. Schneider; Alan C. Mix; Andrea Abelmann; Leanne K. Armand; Edouard Bard; Stephen Barker; Timothy T. Barrows; Heather M Benway; Isabel Cacho; Min-Te Chen; Elsa Cortijo; Xavier Crosta; A. de Vernal; Trond Dokken; Josette Duprat; Henry Elderfield; Frédérique Eynaud; Rainer Gersonde; A. Hayes; Maryse Henry; C. Hillaire-Marcel; C.-C. Huang; Eystein Jansen; Steve Juggins; Nejib Kallel
Quaternary Science Reviews | 2005
Stephen Barker; Isabel Cacho; Heather M Benway; Kazuyo Tachikawa
Earth and Planetary Science Letters | 2004
Heather M Benway; Alan C. Mix
Geochemistry Geophysics Geosystems | 2003
Heather M Benway; Brian A. Haley; Gary P. Klinkhammer; Alan C. Mix
Paleoceanography | 2004
Gary P. Klinkhammer; Brian A. Haley; Alan C. Mix; Heather M Benway; M. Cheseby
Paleoceanography | 2006
Heather M Benway; Alan C. Mix; Brian A. Haley; Gary P. Klinkhammer
Supplement to: Barker, Stephen; Cacho, Isabel; Benway, Heather M; Tachikawa, Kazuyo (2005): Planktonic foraminiferal Mg/Ca as a proxy for past oceanic temperatures: a methodological overview and data compilation for the Last Glacial Maximum. Quaternary Science Reviews, 24(7-9), 821-834, doi:10.1016/j.quascirev.2004.07.016 | 2011
Stephen Barker; Isabel Cacho; Heather M Benway; Kazuyo Tachikawa
Supplement to: Benway, Heather M; Mix, Alan C; Haley, Brian A; Klinkhammer, Gary P (2006): Eastern Pacific Warm Pool paleosalinity and climate variability: 0-30 kyr. Paleoceanography, 21(3), PA3008, doi:10.1029/2005PA001208 | 2006
Heather M Benway; Alan C. Mix; Brian A. Haley; Gary P Klinkhammer
In supplement to: Benway, HM et al. (2006): Eastern Pacific Warm Pool paleosalinity and climate variability: 0-30 kyr. Paleoceanography, 21(3), PA3008, https://doi.org/10.1029/2005PA001208 | 2006
Heather M Benway; Alan C. Mix; Brian A. Haley; Gary P Klinkhammer