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Detrital glass in a Bering Sea sediment core yields a ca. 160 ka Marine Isotope Stage 6 age for Old Crow tephra

Autor: Alberto V. Reyes, Britta J.L. Jensen, Shaun H. Woudstra, Matthew S.M. Bolton, Serhiy D. Buryak, Mea S. Cook, Jordan Harvey, John A. Westgate

Publikováno v: Geology. 51:106-110

For decades, the Old Crow tephra has been a prominent stratigraphic marker for the onset of Marine Isotope Stage (MIS) 5e, the last interglaciation, in subarctic northwest North America. However, new zircon U-Pb dates for the tephra suggest that the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3f886e9ff4fc79d9340d2fb392a580a9
https://doi.org/10.1130/g50491.1

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Automated species-level identification of planktic foraminifera using convolutional neural networks, with comparison to human performance

Autor: Boxuan Zhong, Edgar Lobaton, Joseph D. Ortiz, Ritayan Mitra, Mea S Cook, Qian Ge, Jennifer S. Fehrenbacher, Bhargav Kanakiya, Thomas M Marchitto, Aradhna Tripati

Publikováno v: Marine Micropaleontology. 147:16-24

Picking foraminifera from sediment samples is an essential, but repetitive and low-reward task that is well-suited for automation. The first step toward building a picking robot is the development of an automated identification system. We use machine

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dc373a699ad5eecc6f6a68b64441b413
https://doi.org/10.1016/j.marmicro.2019.01.005

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Marine20—the marine radiocarbon age calibration curve (0 – 55,000 cal BP)

Autor: Luke C Skinner, William E. N. Austin, Edouard Bard, Christopher Bronk Ramsey, Ron W Reimer, Andrea Burke, Mea S Cook, Timothy J Heaton, Paula J. Reimer, Martin Butzin, Jess F. Adkins, Jesper V. Olsen, Peter Köhler, Pieter Meiert Grootes, Bernd Kromer, Konrad A Hughen

Publikováno v: Radiocarbon
Radiocarbon, University of Arizona, 2020, 62 (4), pp.779-820. ⟨10.1017/RDC.2020.68⟩
Heaton, T J, Kohler, P, Butzin, M, Bard, E, Reimer, R, Austin, WI E N, Bronk Ramsey, C, Grootes, P M, Hughen, K A, Kromer, B, Reimer, P, Adkins, J, Andrea, B, Cook, M S, olsen, J & Skinner, L C 2020, ' Marine20—the marine radiocarbon age calibration curve (0–55,000 cal bp) ', Radiocarbon . https://doi.org/10.1017/RDC.2020.68
Heaton, T J, Köhler, P, Butzin, M, Bard, E, Reimer, R W, Austin, W E N, Bronk Ramsey, C, Grootes, P M, Hughen, K A, Kromer, B, Reimer, P J, Adkins, J, Burke, A, Cook, M S, Olsen, J & Skinner, L C 2020, ' Marine20—The Marine Radiocarbon Age Calibration Curve (0–55,000 cal BP) ', Radiocarbon, vol. 62, no. 4, pp. 779-820 . https://doi.org/10.1017/RDC.2020.68
Radiocarbon, 62 (4). pp. 779-820.
Radiocarbon, 2020, 62 (4), pp.779-820. ⟨10.1017/RDC.2020.68⟩
EPIC3Radiocarbon, Cambridge University Press, 62(4), pp. 779-820, ISSN: 0033-8222

T.J. Heaton is supported by a Leverhulme Trust Fellowship RF-2019-140\9, “Improving the Measurement of Time Using Radiocarbon”. M Butzin is supported by the German Federal Ministry of Education and Research (BMBF), as Research for Sustainability

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d73f1cb1e119b3938ce676fe55cdce16
https://hdl.handle.net/10023/20464

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Glacial water mass structure and rapid δ18O and δ13C changes during the last glacial termination in the Southwest Pacific

Autor: Mea S Cook, Thomas P. Guilderson, Aurora C. Elmore, Elisabeth L. Sikes, Katherine A. Allen

Publikováno v: Earth and Planetary Science Letters. 456:87-97

Changes in ocean circulation are thought to have contributed to lowering glacial atmospheric CO 2 levels by enhancing deep ocean sequestration of carbon that was returned to the atmosphere during glacial terminations. High-resolution benthic foramini

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::523e343e2f4d9d5751f006f625dd9cd7
https://doi.org/10.1016/j.epsl.2016.09.043

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Bering Sea surface water conditions during Marine Isotope Stages 12 to 10 at Navarin Canyon (IODP Site U1345)

Autor: Julie Brigham-Grette, Elena Colmenero-Hidalgo, Mea S Cook, Beth Caissie

Publikováno v: Climate of the Past, Vol 12, Iss 9, Pp 1739-1763 (2016)

Records of past warm periods are essential for understanding interglacial climate system dynamics. Marine Isotope Stage 11 occurred from 425 to 394 ka, when global ice volume was the lowest, sea level was the highest, and terrestrial temperatures wer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ea57d1aad9b7488f7c27109c9fcddd8
http://www.clim-past.net/12/1739/2016/cp-12-1739-2016.pdf

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Reduced deep ocean ventilation in the Southern Pacific Ocean during the last glaciation persisted into the deglaciation

Autor: Mea S Cook, Elisabeth L. Sikes, Thomas P. Guilderson

Publikováno v: Earth and Planetary Science Letters. 438:130-138

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 exchange of CO2 the since the last glaciation. Using tephras as stratigraphic tie points

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bc562065598a54a30dc9a7a6f254f155
https://doi.org/10.1016/j.epsl.2015.12.039

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Tracing subarctic Pacific water masses with benthic foraminiferal stable isotopes during the LGM and late Pleistocene

Autor: Alan C. Mix, Ian M. Nesbitt, Nari V. Miller, Mea S Cook, A. Christina Ravelo

Publikováno v: Deep Sea Research Part II: Topical Studies in Oceanography. :84-95

As the largest ocean basin, the Pacific helps to set the global climate state, since its circulation affects mean ocean properties, air–sea partitioning of carbon dioxide, and the distribution of global oceanic poleward heat transport. There is evi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::280c048ef652e58e40065d6af82caeca
https://doi.org/10.1016/j.dsr2.2016.02.006

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Transient stratification as the cause of the North Pacific productivity spike during deglaciation

Autor: Laura F. Robinson, Mea S Cook, Phoebe J. Lam, Lloyd D Keigwin, Jerzy S. Blusztajn, Camille Li, Jerry F. McManus

Publikováno v: Nature Geoscience. 6:622-626

During the last deglaciation, the North Pacific Ocean was characterized by a spike in primary productivity, which has been attributed to iron input. Marine sediment analyses suggest that, instead, the productivity may have been fuelled by deep convec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::02592a1a49ca82779f67bfd781e52511
https://doi.org/10.1038/ngeo1873

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Millennial-scale climate change and intermediate water circulation in the Bering Sea from 90 ka: A high-resolution record from IODP Site U1340

Autor: Kelsey A. Dyez, Shiloh Anne Schlung, A. Christina Ravelo, Mea S Cook, Kazo Takahashi, Dyke Andreasen, Jonathan P LaRiviere, Michelle K Drake, Thomas P. Guilderson, Zuzanna N Stroynowski, Ivano W. Aiello

Publikováno v: Paleoceanography. 28:54-67

[1] Millennial-scale climate events in the North Pacific are thought to be related to changes in the circulation of North Pacific Intermediate Water, which may have formed in the Bering Sea in the past. To advance our understanding of the mechanisms

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a77d403f61d6acc731f7e8b1c73dca28
https://doi.org/10.1029/2012pa002365

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