Výsledky vyhledávání - "Tom F Pedersen"

Undocumented water column sink for cadmium in open ocean oxygen-deficient zones

Autor: Jay T. Cullen, Dennis I. Kramer, James R. Christian, David J. Janssen, Tim M. Conway, Seth G. John, Tom F. Pedersen

Publikováno v: Proceedings of the National Academy of Sciences. 111:6888-6893

Cadmium (Cd) is a micronutrient and a tracer of biological productivity and circulation in the ocean. The correlation between dissolved Cd and the major algal nutrients in seawater has led to the use of Cd preserved in microfossils to constrain past

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41944a6f6edc3ece3f5804871f5e3333
https://doi.org/10.1073/pnas.1402388111

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Optimal electricity system planning in a large hydro jurisdiction: Will British Columbia soon become a major importer of electricity?

Autor: Peter Wild, Behdad Kiani, Tom F. Pedersen, Lawrence Pitt, Amy Sopinka, Andrew Rowe

Publikováno v: Energy Policy. 54:311-319

An energy-system model incorporating generation, transmission and integrated management of hydroelectric reservoirs in British Columbia (BC) is used to explore approaches to meeting load projections to 2040. The model includes electricity trade betwe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::448628645413da5392ccbcc5e4646f2e
https://doi.org/10.1016/j.enpol.2012.11.040

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Postglacial evolution of a Pacific coastal fjord in British Columbia, Canada: interactions of sea-level change, crustal response, and environmental fluctuations — results from MONA core MD02-2494This article is one of a series of papers published in this Special Issue on the theme Polar Climate Stability Network

Autor: Steve E. CalvertS.E. Calvert, Judith Baker, Richard E. Thomson, Tara IvanochkoT. Ivanochko, Randolph J. Enkin, Reinhard Pienitz, Cynthia A. WrightC.A. Wright, John Southon, Tom F. Pedersen, Audrey Dallimore

Publikováno v: Canadian Journal of Earth Sciences. 45:1345-1362

The sedimentary record in a 40.9 m giant (Calypso) piston core (MD02-2494) raised from the inner basin within Effingham Inlet, British Columbia, Canada, during the 2002 Marges Ouest Nord Américaines (MONA) campaign, spans from 14 360 14C years BP (1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4163ae239b97c6b8d2959bc2c612bf2c
https://doi.org/10.1139/e08-042

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Stable nitrogen isotope dynamics of a mesoscale iron enrichment experiment in the NE Subarctic Pacific

Autor: Tom F. Pedersen, Adrian Marchetti, Paul J. Harrison, Michael F. Henry, W. Keith Johnson, Chi Shing Wong, Joseph A. Needoba

Publikováno v: Deep Sea Research Part II: Topical Studies in Oceanography. 53:2214-2230

We report the response in the natural abundance of the stable isotopes of nitrogen (δ15N) during the Fe-enrichment experiment SERIES (Subarctic Ecosystem Response to Iron Enrichment Study) in the NE Pacific. Samples were collected for isotope analys

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5ae7d977fad5a7ec6818cd82e407de5e
https://doi.org/10.1016/j.dsr2.2006.05.021

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Export Production in the Subarctic North Pacific over the Last 800 kyrs: No Evidence for Iron Fertilization?

Autor: John Crusius, Ingrid L. Hendy, Tom F. Pedersen, Stephen E. Calvert, Stephanie S. Kienast

Publikováno v: Journal of Oceanography. 60:189-203

The subarctic North Pacific is a high nitrate-low chlorophyll (HNLC) region, where phytoplankton growth rates, especially those of diatoms, are enhanced when micronutrient Fe is added. Accordingly, it has been suggested that glacial Fe-laden dust mig

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a46090cf4f2ddb9a48bd4da3efd33ba0
https://doi.org/10.1023/b:joce.0000038326.73943.aa

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Post-Depositional Behavior of Cu in a Metal-Mining Polishing Pond (East Lake, Canada)

Autor: John L. Jambor, John Crusius, Tom F. Pedersen, Alan J. Martin

Publikováno v: Environmental Science & Technology. 37:4925-4933

The post-depositional behavior of Cu in a gold-mining polishing pond (East Lake, Canada) was assessed after mine closure by examination of porewater chemistry and mineralogy. The near-surface (upper 1.5 cm) sediments are enriched in Cu, with values r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6f05f927a2f08054547118477628f30
https://doi.org/10.1021/es034242l

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Organic content and preservational controls in surficial shelf and slope sediments from the Arabian Sea (Pakistan margin)

Autor: Ulrich von Rad, Tom F Pedersen, Stephen E. Calvert, Gregory L. Cowie, Hartmut Schulz

Publikováno v: Marine Geology. 161:23-38

In the Arabian Sea, organic-rich deposits occur on the continental slope at depths roughly coincident with the impingement of an intense water-column oxygen minimum zone (OMZ). This relationship has often been taken as causal, and such deposits are o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d3183a0de965bf22ef1a2bfe9d80fdee
https://doi.org/10.1016/s0025-3227(99)00053-5

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A review of nitrogen isotopic alteration in marine sediments

Publikováno v: Paleoceanography. 27

Key Points: Use of sedimentary nitrogen isotopes is examined; On average, sediment 15N/14N increases approx. 2 per mil during early burial; Isotopic alteration scales with water depth Abstract: Nitrogen isotopes are an important tool for evaluating p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b7b1a45b6fdc753813aeec01e5cedc0e
https://doi.org/10.1029/2012pa002321

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Interhemispheric leakage of isotopically heavy nitrate in the eastern tropical Pacific during the last glacial period

Autor: Laetitia Pichevin, Raja S. Ganeshram, Tom F. Pedersen, Elsa Arellano-Torres, Stephen Francavilla, Luc Beaufort

Publikováno v: Paleoceanography. 25

We present new high-resolution N isotope records from the Gulf of Tehuantepec and the Nicaragua Basin spanning the last 50-70 ka. The Tehuantepec site is situated within the core of the north subtropical denitrification zone while the Nicaragua site

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::17fde03232ddd3763b1ac4ad43b60333
https://doi.org/10.1029/2009pa001754

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Challenges of a Changing Earth: Past Perspectives, Future Concerns

Autor: Raymond S. Bradley, Keith Alverson, Tom F Pedersen

Publikováno v: Paleoclimate, Global Change and the Future ISBN: 9783642626920

Paleoclimatic research has revealed an astonishing picture of past changes in the earth system. Over the last 2 million years, climate has varied widely from ice ages to warm interglacials. Between these extremes global sea-level varied by up to 130

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::88ebf7b307325ff71b726e30d4575fee
https://doi.org/10.1007/978-3-642-55828-3_8

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