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Filtering by: Alternative title ssim Seasonality of UK'37 temperature estimates as inferred from sediment trap data Remove constraint Alternative title ssim: Seasonality of UK'37 temperature estimates as inferred from sediment trap data Creator Mix, Alan C. Remove constraint Creator: Mix, Alan C.

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Foraminiferal faunal estimates of paleotemperature: Circumventing the no-analog problem yields cool ice age tropics

Creator:

Mix, Alan C., Morey, Ann E., Pisias, Nicklas G., and Hostetler, Steven W.

Abstract:

The sensitivity of the tropics to climate change, particularly the amplitude of glacial‐to‐interglacial changes in sea surface temperature (SST), is one of the great controversies in paleoclimatology. Here we reassess faunal estimates of ice age SSTs, focusing on the problem of no‐analog planktonic foraminiferal assemblages in the equatorial oceans that...

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to species census data from ancient samples to make estimates of environmental properties in the
Multiproxy assessment of the western equatorial Pacific hydrography during the last 30 kyr

Creator:

de Garidel-Thoron, Thibault, Rosenthal, Yair, Beaufort, Luc, Bard, Edouard, Sonzogni, Corinne, and Mix, Alan C.

Abstract:

Sea surface temperature (SST) and salinity of the Western Pacific Warm Pool (WPWP) reflect global climate effects such as the El Niño–Southern Oscillation phenomenon. However, reconstructions of past changes in the WPWP from the geologic record vary depending on the specific proxy record used. Here we develop a multiproxy record...

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Changes Inferred From D18Osw [24] Mg/Ca temperature estimates are used to remove the thermal effect from
Alkenone sea-surface temperatures and carbon burial at site 846 (Eastern Equatorial Pacific Ocean) : the last 1.3 M.Y.

Creator:

Emeis, K.-C., Doose, H., Mix, Alan C., and Schulz-Bull, D.

Abstract:

We analyzed the unsaturation ratio (U k/37 ) of long-chain ketones—a molecular sea-surface temperature (SST) indicator—concentrations of carbonate and organic carbon in sediments from Site 846 in the eastern equatorial Pacific Ocean. Based on an isotopic age model for the composite depth section of 0-46 m below seafloor and on...

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for the composite depth section of 0-46 m below seafloor and on estimates of sediment density
Anthropogenic CO₂ invasion into the northeast Pacific based on concurrent δ¹³CDIC and nutrient profiles from the California Current

Creator:

Ortiz, Joseph D., Mix, Alan C., Wheeler, Patricia A., and Key, R. M.

Abstract:

The stable isotopic signature of dissolved inorganic carbon (δ¹³CDIC) in the northeast Pacific Ocean is lower in near-surface waters by 1.1‰ relative to values predicted from global oceanic trends of δ¹³CDIC versus nutrients. A combination of anthropogenic carbon uptake from the atmosphere and thermodynamic, air-sea gas exchange processes in different...

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Pacific estimate. Because the sediment trap data of Beveridge and Shackleton [ 1994] extend only to 60 m
Benthic foraminifer stable isotope record from Site 849 (0 - 5 Ma) : local and global climate changes

Creator:

Mix, Alan C., Pisias, Nicklas G., Rugh, W., Wilson, J., Morey, A., and Hagelberg, T. K.

Abstract:

Benthic foraminifer and δ¹³C data from Site 849, on the west flank of the East Pacific Rise (0°11'N, 110°3l'W; 3851 m), give relatively continuous records of deep Pacific Ocean stable isotope variations between 0 and 5 Ma. The mean sample spacing is 4 k.y. Most analyses are from Cibicides wuellerstorfi>...

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the results here present data from the top -140 m of the sediment column. RESULTS All isotope data
Late Quaternary paleoceanography in the Eastern Equatorial Pacific Ocean from Planktonic Foraminifiers : a high-resolution record from Site 846

Creator:

Mix, Alan C., Le, J., and Shackleton, N. J.

Abstract:

High-resolution records of δ¹⁸0 and relative abundances of planktonic foraminifers were generated for ODP Leg 138 Site 846 for the past 800 k.y., with an average sampling interval of 3.6 k.y. The time scale was constructed by correlating the benthic δ¹⁸0 record to the SPECMAP and ODP Site 677 δ¹⁸0...

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constructed by combining δ 1 8 θ data from different holes and by adding +0.64%e to the values of δ 1 8 θ from
Early to Late Holocene Surface Exposure Ages From Two Marine-Terminating Outlet Glaciers in Northwest Greenland

Creator:

Reusche, Melissa M., Marcott, Shaun A., Ceperley, Elizabeth G., Barth, Aaron M., Brook, Edward J., Mix, Alan C., and Caffee, Marc W.

Abstract:

Terrestrial chronologies from southern Greenland provide a detailed deglacial history of the Greenland Ice Sheet (GIS). The northern GIS margin history, however, is less established. Here we present surface exposure ages from moraines associated with two large outlet glaciers, Petermann and Humboldt, in the northwestern sector of the GIS. These...

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past fluctuations of the GIS in data-sparse areas is needed. Variation in ice extent is archived as
Photosynthetic fractionation of ¹³C and concentrations of dissolved CO₂ in the central equatorial Pacific during the last 255,000 years

Creator:

Jasper, John P, Hayes, J. M., Mix, Alan C., and Prahl, Fredrick

Abstract:

Carbon isotopically based estimates of CO₂ levels have been generated from a record of the photosynthetic fractionation of ¹³C (≡εp) in a central equatorial Pacific sediment core that spans the last ~255 ka. Contents of ¹³C in phytoplanktonic biomass were determined by analysis of C37 alkadienones. These compounds are exclusive...

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components from the oceanic water column as recovered from deep-sea sediment cores. Each of these
Adaptation of a flow-through leaching procedure for Mg/Ca paleothermometry

Creator:

Benway, H. M., Haley, Brian A., Klinkhammer, Gary P., and Mix, Alan C.

Abstract:

Mg/Ca ratios in planktonic foraminifera reflect calcification temperatures and are thus useful for sea surface temperature (SST) reconstructions. Despite the obvious utility of this paleoceanographic tracer, problems of dissolution, gametogenic calcification, and contaminant phases have thus far limited confidence in Mg/Ca-based reconstructions. Here we show strong evidence of Mg heterogeneity...

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data from Thunell et al. [1983] for G. ruber from a sediment trap at 890 m in the Panama Basin region
Biogenic and terrigenous sedimetations at Ceara rise, western tropical Altantic, supports Pliocene - Pleistocene deep - water linkage between hemispheres

Creator:

Harris, Sara E., Mix, Alan C., and King, Terri

Abstract:

Calcium carbonate percentages at five Ceara Rise sites were estimated at 1- to 2-k.y. intervals over the past 5 m.y., using reflectance spectroscopy and magnetic susceptibility proxies. From these estimates and detailed correlations between sites, gradients of calcite and terrigenous sediment accumulation rates in a depth transect of sites reveal...

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estimates and detailed correlations between sites, gra- dients of calcite and terrigenous sediment

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Academic Affiliation

College of Earth, Ocean, and Atmospheric Sciences2
College of Oceanic and Atmospheric Sciences2

Creator

Mix, Alan C.[remove]18
Klinkhammer, Gary P.3
Pisias, Nicklas G.3
Benway, H. M.2
Brook, Edward J.2
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Current results range from 1994 to 2018

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2010-20194
2000-20097
1990-19997

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English [eng]18

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Attribution 4.0 (CC BY 4.0)1

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Yes5

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Article18

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Copyright Not Evaluated14
In Copyright4

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