Zobrazeno 1 - 10
of 100
pro vyhledávání: '"Robert Raiswell"'
Autor:
Bridget Kenlee, Jeremy D. Owens, Robert Raiswell, Simon W. Poulton, Silke Severmann, Peter M. Sadler, Timothy W. Lyons
Publikováno v:
Frontiers in Marine Science, Vol 11 (2024)
Wind-borne dust supply of iron (Fe) to the oceans plays a crucial role in Earth’s biogeochemical cycles. Iron, a limiting micronutrient for phytoplankton growth, is fundamental in regulating ocean primary productivity and in turn the global carbon
Externí odkaz:
https://doaj.org/article/be97d2356a6f43a7ba3f0f5df87ccf3a
Autor:
Xiangying Li, Ninglian Wang, Yongjian Ding, Jon R. Hawkings, Jacob C. Yde, Robert Raiswell, Jintao Liu, Shiqiang Zhang, Shichang Kang, Rongjun Wang, Qiao Liu, Shiyin Liu, Roland Bol, Xiaoni You, Guoyu Li
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-13 (2022)
Global glacial chemical denudation is one of the largest contributors to global elemental cycles and, amplified by climate warming, will significantly impact nutrient loads in downstream ecosystems.
Externí odkaz:
https://doaj.org/article/2cb19bf506a74798b88659a3791a4edd
Publikováno v:
Frontiers in Earth Science, Vol 6 (2018)
A more insightful view of iron in glacial systems requires consideration of iron speciation and mineralogy, the potential for iron minerals to undergo weathering in ice-water environments, the impact of freezing on concentration and speciation, and p
Externí odkaz:
https://doaj.org/article/2aae7b8cfd9649a5a7f2fef3e2ce3dd7
Autor:
Sean J. Loyd, Patrick Meister, Bo Liu, Kevin Nichols, Frank A. Corsetti, Robert Raiswell, William Berelson, Graham Shields, Mark Hounslow, John W.F. Waldron, Bayne Westrick-Snapp, Jamie Hoffman
Publikováno v:
EPIC3Geochimica et Cosmochimica Acta, Elsevier BV, 351, pp. 152-166, ISSN: 0016-7037
Early diagenesis of marine organic matter dramatically impacts Earth’s surface chemistry by changing the burial potential of carbon and promoting the formation of authigenic mineral phases including carbonate concretions. Marine sediment-hosted car
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cedf4f4a37f939144fd1719881cf52cd
https://doi.org/10.1016/j.gca.2023.04.022
https://doi.org/10.1016/j.gca.2023.04.022
Autor:
Qijiang Li, Xiangying Li, Yongjian Ding, Tianding Han, Xiaobo He, Eran Hood, Shichang Kang, Zhongbo Yu, Robert Raiswell, Sillanpää Mika, Sha Liu, Qingbai Wu
Publikováno v:
Global Biogeochemical Cycles. 33:1223-1237
Ice sheets have been shown to deliver large amounts of labile iron (Fe) to aquatic ecosystems; however, the role of glaciers distinct from ice sheets in supplying labile Fe to downstream ecosystems is less well understood despite their rapid volume l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::efa378012f186088ed35eedf42245f27
https://doi.org/10.1029/2018gb006113
https://doi.org/10.1029/2018gb006113
Autor:
John Cliff, Daniel D. Gregory, Ross R. Large, Janaína N. Ávila, Leonid V. Danyushevsky, Paul Olin, Valeriy V. Maslennikov, Timothy W. Lyons, Stephanie L. Olson, Trevor Ireland, Aleksandr S. Stepanov, Robert Raiswell, Indrani Mukherjee
Publikováno v:
Geochimica et Cosmochimica Acta. 259:53-68
Redox sensitive trace elements in pyrite, including nodules, are increasingly used to infer the chemical conditions of ancient oceans - but considerable uncertainty remains regarding the mechanism and timing of nodule formation. Resolving these uncer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41014bb507806fd0af0082511a074b33
https://doi.org/10.1016/j.gca.2019.05.035
https://doi.org/10.1016/j.gca.2019.05.035
Glacial systems transfer sediment, rich in essential nutrients and bioavailable iron (BioFe) from continental sources to the ocean through iceberg transport, resulting in Heinrich layers during deglacial phases. The Southern Ocean is currently nutrie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3e87d492f783fcbb895bbfdf0a7c6c8
https://doi.org/10.5194/egusphere-egu2020-2744
https://doi.org/10.5194/egusphere-egu2020-2744
Autor:
Robert Raiswell, Jon R. Hawkings, Jemma L. Wadham, Majid Kazemian Abyaneh, Liane G. Benning, Anthony Stockdale, Tohru Araki, Burkhard Kaulich, Martyn Tranter, Monika Koch-Müller
Publikováno v:
Earth and Planetary Science Letters
Hawkings, J R, Benning, L G, Raiswell, R, Kaulich, B, Araki, T, Abyaneh, M, Stockdale, A, Koch-Müller, M, Wadham, J L & Tranter, M 2018, ' Biolabile ferrous iron bearing nanoparticles in glacial sediments ', Earth and Planetary Science Letters, vol. 493, pp. 92-101 . https://doi.org/10.1016/j.epsl.2018.04.022
Hawkings, J R, Benning, L G, Raiswell, R, Kaulich, B, Araki, T, Abyaneh, M, Stockdale, A, Koch-Müller, M, Wadham, J L & Tranter, M 2018, ' Biolabile ferrous iron bearing nanoparticles in glacial sediments ', Earth and Planetary Science Letters, vol. 493, pp. 92-101 . https://doi.org/10.1016/j.epsl.2018.04.022
Glaciers and ice sheets are a significant source of nanoparticulate Fe, which is potentially important in sustaining the high productivity observed in the near-coastal regions proximal to terrestrial ice cover. However, the bioavailability of particu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d29d3eff42a2914b99bbed213e94c0d
https://doi.org/10.1016/j.epsl.2018.04.022
https://doi.org/10.1016/j.epsl.2018.04.022
Autor:
Noah J. Planavsky, Timothy W. Lyons, Christopher T. Reinhard, Simon W. Poulton, Dalton S. Hardisty, Jeremy D. Owens, Robert Raiswell, Donald E. Canfield
Publikováno v:
Raiswell, R, Hardisty, D S, Lyons, T W, Canfield, D E, Owens, J D, Planavsky, N J, Poulton, S W & Reinhard, C T 2018, ' The iron paleoredox proxies : A guide to the pitfalls, problems and proper practice ', American Journal of Science, vol. 318, no. 5, pp. 491-526 . https://doi.org/10.2475/05.2018.03
Oceanic anoxia—including euxinic settings defined by the presence of water column hydrogen sulfide (H2S)—is minor in the ocean today. Such conditions, however, were common or even dominant in the past, particularly during the Precambrian and Phan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::efa81856f093bb5f4412a1e9b587a05b
https://doi.org/10.2475/05.2018.03
https://doi.org/10.2475/05.2018.03