Search Results - "Sikes, Elisabeth L."

Evolution of the Oceanic 13C Suess Effect in the Southeastern Indian Ocean Between 1994 and 2018 by Thomas J. Williams, Amy J. Wagner, Elisabeth L. Sikes, Ellen E. Martin

“…Abstract The decrease in δ13C of dissolved inorganic carbon (δ13CDIC) owing to uptake of anthropogenic CO2 (the oceanic 13C Suess effect) in the Southeastern…”
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Upper-ocean-to-atmosphere radiocarbon offsets imply fast deglacial carbon dioxide release by Sikes, Elisabeth L, Rose, Kathryn A, Guilderson, Thomas P, Shane, Phil, Hill, Tessa M, Zahn, Rainer, Spero, Howard J

“…Radiocarbon in the atmosphere is regulated largely by ocean circulation, which controls the sequestration of carbon dioxide (CO2) in the deep sea through…”
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Microalgal biomarkers: A review of recent research developments by Volkman, John K, Barrett, Stephanie M, Blackburn, Susan I, Mansour, Maged P, Sikes, Elisabeth L, Gelin, François

“…Microalgae are major sources of lipids in lacustrine and marine environments. This paper provides a review of some recent advances in our knowledge of the wide…”
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Reduced deep ocean ventilation in the Southern Pacific Ocean during the last glaciation persisted into the deglaciation by Sikes, Elisabeth L., Cook, Mea S., Guilderson, Thomas P.

“…Marine radiocarbon (14C) is widely used to trace ocean circulation and the 14C levels of interior ocean water masses can provide insight into atmosphere–ocean…”
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Southwest Pacific Ocean surface reservoir ages since the last glaciation: Circulation insights from multiple‐core studies by Sikes, Elisabeth L., Guilderson, Thomas P.

“…Radiocarbon (14C) in dissolved inorganic carbon in the ocean can trace the age of ocean water relative to the atmosphere and provide insight into…”
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The Mg/Ca proxy for temperature: A Uvigerina core-top study in the Southwest Pacific by Stirpe, Cassandre R., Allen, Katherine A., Sikes, Elisabeth L., Zhou, Xiaoli, Rosenthal, Yair, Cruz-Uribe, Alicia M., Brooks, Hanna L.

“…•We present new core-top U. peregrina Mg/Ca from the Southwest Pacific.•Previous calibrations reproduce modern temperatures within ±2 °C for sites < 2…”
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Particulate organic matter higher concentrations, terrestrial sources and losses in bottom waters of the turbidity maximum, Delaware Estuary, U.S.A by Hermes, Anna L., Sikes, Elisabeth L.

“…The pathway and fate of land-derived suspended particulate organic matter (POM) as it passes through estuaries remains a poorly constrained component of…”
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Southwest Pacific deep water carbonate chemistry linked to high southern latitude climate and atmospheric CO2 during the Last Glacial Termination by Allen, Katherine A., Sikes, Elisabeth L., Hönisch, Bärbel, Elmore, Aurora C., Guilderson, Thomas P., Rosenthal, Yair, Anderson, Robert F.

“…A greater amount of CO2 was stored in the deep sea during glacial periods, likely via greater efficiency of the biologic pump and increased uptake by a more…”
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Seasonal and Latitudinal Response of New Zealand Sea Surface Temperature to Warming Climate Since the Last Glaciation: Comparing Alkenones to Mg/Ca Foraminiferal Reconstructions by Sikes, Elisabeth L., Schiraldi, Benedetto, Williams, Amanda

“…Dual proxies were used to estimate paleo sea surface temperatures (SST) for the Bay of Plenty, north of New Zealand. U37K′ and Mg/Ca in the planktonic…”
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Calibration of the carbon isotope composition (δ13C) of benthic foraminifera by Schmittner, Andreas, Bostock, Helen C., Cartapanis, Olivier, Curry, William B., Filipsson, Helena L., Galbraith, Eric D., Gottschalk, Julia, Herguera, Juan Carlos, Hoogakker, Babette, Jaccard, Samuel L., Lisiecki, Lorraine E., Lund, David C., Martínez‐Méndez, Gema, Lynch‐Stieglitz, Jean, Mackensen, Andreas, Michel, Elisabeth, Mix, Alan C., Oppo, Delia W., Peterson, Carlye D., Repschläger, Janne, Sikes, Elisabeth L., Spero, Howard J., Waelbroeck, Claire

“…The carbon isotope composition (δ13C) of seawater provides valuable insight on ocean circulation, air‐sea exchange, the biological pump, and the global carbon…”
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Bacterial influence on alkenones in live microalgae by Segev, Einat, Castañeda, Isla S, Sikes, Elisabeth L, Vlamakis, Hera, Kolter, Roberto, Wood, M

“…The microalga Emiliania huxleyi produces alkenone lipids that are important proxies for estimating past sea surface temperatures. Field calibrations of this…”
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Rapid Loss of CO2 From the South Pacific Ocean During the Last Glacial Termination by Allen, Katherine A., Sikes, Elisabeth L., Anderson, Robert F., Rosenthal, Yair

“…During the termination of the last ice age, atmospheric CO2 rose ~80 ppm, but the origin of this carbon has not been fully resolved. Here we present novel…”
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Southwest Pacific Vertical Structure Influences on Oceanic Carbon Storage Since the Last Glacial Maximum by Clementi, Vincent J., Sikes, Elisabeth L.

“…Lower atmospheric CO2 concentrations during the Last Glacial Maximum (LGM; 23.0–18.0 ka) have been attributed to the sequestration of respired carbon in the…”
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Flow discharge influences on input and transport of particulate and sedimentary organic carbon along a small temperate river by Medeiros, Patricia M., Sikes, Elisabeth L., Thomas, Burt, Freeman, Katherine H.

“…The relative importance of hydrological conditions and upstream processes on the input and transport of organic carbon from land to sea was investigated in the…”
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Southwest Pacific subtropics responded to last deglacial warming with changes in shallow water sources by Schiraldi Jr, Benedetto, Sikes, Elisabeth L., Elmore, Aurora C., Cook, Mea S., Rose, Kathryn A.

“…This study examined sources of mixed layer and shallow subsurface waters in the subtropical Bay of Plenty, New Zealand, across the last deglaciation (~30–5…”
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Deep‐sea coral δ13C: A tool to reconstruct the difference between seawater pH and δ11B‐derived calcifying fluid pH by Martin, Patrick, Goodkin, Nathalie F., Stewart, Joseph A., Foster, Gavin L., Sikes, Elisabeth L., White, Helen K., Hennige, Sebastian, Roberts, J. Murray

“…The boron isotopic composition (δ11B) of coral skeleton is a proxy for seawater pH. However, δ11B‐based pH estimates must account for the pH difference between…”
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World Atlas of late Quaternary Foraminiferal Oxygen and Carbon Isotope Ratios by Mulitza, Stefan, Bickert, Torsten, Bostock, Helen C, Chiessi, Cristiano M, Donner, Barbara, Govin, Aline, Harada, Naomi, Huang, Enqing, Johnstone, Heather, Kuhnert, Henning, Langner, Michael, Lamy, Frank, Lembke-Jene, Lester, Lisiecki, Lorraine, Lynch-Stieglitz, Jean, Max, Lars, Mohtadi, Mahyar, Mollenhauer, Gesine, Muglia, Juan, Nürnberg, Dirk, Paul, André, Rühlemann, Carsten, Repschläger, Janne, Saraswat, Rajeev, Schmittner, Andreas, Sikes, Elisabeth L, Spielhagen, Robert F, Tiedemann, Ralf

“…We present a global atlas of downcore foraminiferal oxygen and carbon isotope ratios available at https://doi.org/10.1594/PANGAEA.936747 (Mulitza et al.,…”
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Old radiocarbon ages in the southwest Pacific Ocean during the last glacial period and deglaciation by Sikes, Elisabeth L, Samson, Catherine R, Guilderson, Thomas P, Howard, William R

“…Marine radiocarbon (14C) dates are widely used for dating oceanic events and as tracers of ocean circulation, essential components for understanding…”
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The evolution of Ace Lake, Antarctica, determined from sedimentary diatom assemblages by Fulford-Smith, Serena P., Sikes, Elisabeth L.

“…The sediments in Ace Lake in the Vestfold Hills, East Antarctica, contain a continuous sequence of diatom frustules that record the lake's history since its…”
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Alkenone temperature records and biomarker flux at the subtropical front on the chatham rise, SW Pacific Ocean by Sikes, Elisabeth L., O’Leary, Teresa, Nodder, Scott D., Volkman, John K.

“…Alkenones and a suite of sterol biomarkers were examined in two sediment trap arrays deployed at 300 m depth in subtropical and subantarctic waters to the east…”
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