Search Results - "Chase, Zanna"

Microplastic Pollution in Deep-Sea Sediments From the Great Australian Bight by Barrett, Justine, Chase, Zanna, Zhang, Jing, Holl, Mark M. Banaszak, Willis, Kathryn, Williams, Alan, Hardesty, Britta D., Wilcox, Chris

“…Interest in understanding the extent of plastic and specifically microplastic pollution has increased on a global scale. Still one large piece of the overall…”
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Reconstructing the History of Nutrient Loads and Sources in the Derwent Estuary, Tasmania, Australia, using Isotopic Fingerprinting Techniques by Stevens, Harrison, Chase, Zanna, Zawadzki, Atun, Wong, Henri, Proemse, Bernadette C.

“…Carbon and nitrogen stable isotope analysis of estuarine sediment cores has proved useful for tracing nutrient sources and for assessing changes to nutrient…”
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Marine nitrogen fixers mediate a low latitude pathway for atmospheric CO2 drawdown by Buchanan, Pearse J., Chase, Zanna, Matear, Richard J., Phipps, Steven J., Bindoff, Nathaniel L.

“…Roughly a third (~30 ppm) of the carbon dioxide (CO 2 ) that entered the ocean during ice ages is attributed to biological mechanisms. A leading hypothesis for…”
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Scratching the Surface: A Marine Sediment Provenance Record From the Continental Slope of Central Wilkes Land, East Antarctica by Sian Tooze, Jacqueline A. Halpin, Taryn L. Noble, Zanna Chase, Philip E. O'Brien, Leanne Armand

“…Abstract The geology of Wilkes Land, East Antarctica, is masked by kilometers of ice and remains largely unexplored. Defining the sediment provenance adjacent…”
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Pre-concentration of thorium and neodymium isotopes using Nobias chelating resin: Method development and application to chromatographic separation by Pérez-Tribouillier, Habacuc, Noble, Taryn L., Townsend, Ashley T., Bowie, Andrew R., Chase, Zanna

“…The isotopes of thorium (Th) and neodymium (Nd) are used as tracers in oceanography, and are key parameters in the international GEOTRACES program. The very…”
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Dissolution of fluoride complexes following microwave-assisted hydrofluoric acid digestion of marine sediments by Muratli, Jesse M., McManus, James, Mix, Alan, Chase, Zanna

“…► Insoluble fluorides can form during microwave-assisted digestions in HF. ► Fluorides lead to erroneous measurement of certain major elements. ► For some…”
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OBSERVING BIOGEOCHEMICAL CYCLES AT GLOBAL SCALES WITH PROFILING FLOATS AND GLIDERS: PROSPECTS FOR A GLOBAL ARRAY by JOHNSON, KENNETH S., BERELSON, WILLIAM M., BOSS, EMMANUEL S., CHASE, ZANNA, CLAUSTRE, HERVÉ, EMERSON, STEVEN R., GRUBER, NICOLAS, KÖRTZINGER, ARNE, PERRY, MARY JANE, RISER, STEPHEN C.

“…Chemical and biological sensor technologies have advanced rapidly in the past five years. Sensors that require low power and operate for multiple years are now…”
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Iron links river runoff and shelf width to phytoplankton biomass along the U.S. West Coast by Chase, Zanna, Strutton, Peter G., Hales, Burke

“…A poleward increase in phytoplankton biomass along the West Coast of North America has been attributed to increasing river runoff towards the north. We combine…”
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Sources and fluxes of atmospheric trace elements to the Gulf of Aqaba, Red Sea by Chen, Ying, Paytan, Adina, Chase, Zanna, Measures, Christopher, Beck, Aaron J., Sañudo-Wilhelmy, Sergio A., Post, Anton F.

“…We present the first comprehensive investigation of the concentrations, fluxes and sources of aerosol trace elements over the Gulf of Aqaba. We found that the…”
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High Lability Fe Particles Sourced From Glacial Erosion Can Meet Previously Unaccounted Biological Demand: Heard Island, Southern Ocean by van der Merwe, Pier, Wuttig, Kathrin, Holmes, Thomas, Trull, Thomas W., Chase, Zanna, Townsend, Ashley T., Goemann, Karsten, Bowie, Andrew R.

“…Iron (Fe) is an essential micronutrient that controls phytoplankton growth in the Southern Ocean. Dissolved Fe ( 0.4µm) is far more abundant and may also…”
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Quantifying Lithogenic Inputs to the Southern Ocean Using Long-Lived Thorium Isotopes by Pérez-Tribouillier, Habacuc, Noble, Taryn L., Townsend, Ashley T., Bowie, Andrew R., Chase, Zanna

“…Above the Kerguelen Plateau in the Southern Ocean, lithogenic inputs containing essential trace metals such as iron naturally fertilize surrounding waters,…”
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Improved methodology for the microwave digestion of carbonate-rich environmental samples by Durand, Axel, Chase, Zanna, Townsend, Ashley T., Noble, Taryn, Panietz, Emily, Goemann, Karsten

“…Microwave-assisted digestion permits a rapid and total dissolution of sediments and various other sample types, allowing easier and more accurate multi-element…”
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Input and cycling of iron in the Gulf of Aqaba, Red Sea by Chase, Zanna, Paytan, Adina, Johnson, Kenneth S., Street, Joseph, Chen, Ying

“…The Gulf of Aqaba, northern Red Sea, is an ideal natural laboratory for studying the impact of atmospheric dry deposition of iron to the ocean surface. We have…”
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Riverine Input of Macronutrients, Iron, and Organic Matter to the Coastal Ocean off Oregon, U.S.A., during the Winter by Wetz, Michael S., Hales, Burke, Chase, Zanna, Wheeler, Patricia A., Whitney, Michael M.

“…Three cross-shelf transects were conducted off northern Oregon in February, 2003, coincident with flooding of Coast Range rivers, to assess the riverine impact…”
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Distribution and variability of iron input to Oregon coastal waters during the upwelling season by Chase, Zanna, Hales, Burke, Cowles, Timothy, Schwartz, Roseanne, van Geen, Alexander

“…We measured iron concentrations off the Oregon coast in spring (May–June) and summer (August) of 2001 as part of the Coastal Ocean Advances in Shelf Transport…”
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Accumulation of biogenic and lithogenic material in the Pacific sector of the Southern Ocean during the past 40,000 years by Chase, Zanna, Anderson, Robert F., Fleisher, Martin Q., Kubik, Peter W.

“…The 230Th-normalization technique was applied to surface sediments and down-core records from the Pacific sector of the Southern Ocean between 120°W and 170°W…”
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Effect of Iron Limitation on the Cadmium to Phosphorus Ratio of Natural Phytoplankton Assemblages from the Southern Ocean by Cullen, Jay T., Chase, Zanna, Coale, Kenneth H., Fitzwater, Steve E., Sherrell, Robert M.

“…There is considerable interest in the biogeochemical cycling of cadmium (Cd) and phosphate (PO4) in surface waters, driven in part by the ongoing development…”
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Temporal evolution of mechanisms controlling ocean carbon uptake during the last glacial cycle by Kohfeld, Karen E., Chase, Zanna

“…Many mechanisms have been proposed to explain the ∼85–90 ppm decrease in atmospheric carbon dioxide (CO2) during the last glacial cycle, between 127,000 and…”
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Manganese and iron distributions off central California influenced by upwelling and shelf width by Chase, Zanna, Johnson, Kenneth S., Elrod, Virginia A., Plant, Joshua N., Fitzwater, Steve E., Pickell, Lisa, Sakamoto, Carol M.

“…In July 2002, a combination of underway mapping and discrete profiles revealed significant along-shore variability in the concentrations of manganese and iron…”
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The Southern Ocean's biological pump during the Last Glacial Maximum by Anderson, Robert F, Chase, Zanna, Fleisher, Martin Q, Sachs, Julian

“…Ice core records from Antarctica show large (∼80 ppm) and regular climate-related changes in atmospheric CO 2, with minimum values during glacial periods and…”
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