Výsledky vyhledávání - "Michael E Weber"

Akademický článek

Role of land-ocean interactions in stepwise Northern Hemisphere Glaciation

Publikováno v: Nature Communications, Vol 15, Iss 1, Pp 1-10 (2024)

Abstract The investigation of triggers causing the onset and intensification of Northern Hemisphere Glaciation (NHG) during the late Pliocene is essential for understanding the global climate system, with important implications for projecting future

Externí odkaz: https://doaj.org/article/b3df6bdd873d436095d75ccadf74aeb7

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Akademický článek

A Geochemical Mechanism for >10 m Apparent Downward Offsets of Magnetic Reversals Inferred From Comparison of Two Scotia Sea Drill Sites

Autor: Brendan T. Reilly, Lisa Tauxe, Stefanie A. Brachfeld, Bridget Kenlee, Marcus Gutjahr, Andrew W. Dale, Iván Hernández‐Almeida, Sidney Hemming, Ian Bailey, Xufeng Zheng, Daven Cheu, Reece Taglienti, Michael E. Weber, Maureen E. Raymo, Trevor Williams

Publikováno v: Geochemistry, Geophysics, Geosystems, Vol 25, Iss 7, Pp n/a-n/a (2024)

Abstract We document an apparent downward displacement of the Matuyama‐Brunhes magnetic reversal by ∼20 m at Scotia Sea International Ocean Discovery Program Site U1538 (Pirie Basin) by comparison with the well‐defined paleomagnetic record at n

Externí odkaz: https://doaj.org/article/2e200593ded14486af284f80cbddf20d

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Akademický článek

Antarctic evidence for an abrupt northward shift of the Southern Hemisphere westerlies at 32 ka BP

Autor: Abhijith U. Venugopal, Nancy A. N. Bertler, Jeffrey P. Severinghaus, Edward J. Brook, Giuseppe Cortese, James E. Lee, Thomas Blunier, Paul A. Mayewski, Helle A. Kjær, Lionel Carter, Michael E. Weber, Richard H. Levy, Rebecca L. Pyne, Marcus J. Vandergoes

Publikováno v: Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)

Abstract High-resolution ice core records from coastal Antarctica are particularly useful to inform our understanding of environmental changes and their drivers. Here, we present a decadally resolved record of sea-salt sodium (a proxy for open-ocean

Externí odkaz: https://doaj.org/article/e515b10b2933403ba12334357c7140d6

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Akademický článek

Ancient marine sediment DNA reveals diatom transition in Antarctica

Publikováno v: Nature Communications, Vol 13, Iss 1, Pp 1-14 (2022)

Sedimentary ancient DNA can indicate ecosystem-wide changes. Here, the authors show association between warm phases and high diatom abundance in the Antarctic Scotia Sea, in addition to presenting ancient eukaryote sedimentary DNA spanning the last a

Externí odkaz: https://doaj.org/article/624d69ba850a45618f708851c12232c7

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Akademický článek

Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years

Publikováno v: Nature Communications, Vol 13, Iss 1, Pp 1-18 (2022)

A new high-resolution record for the Antarctic Zone shows persistent anti-phasing of high interglacial ocean productivity and high glacial dust deposition, suggesting a close inter-hemispheric coupling of cryosphere, ocean and atmosphere.

Externí odkaz: https://doaj.org/article/399791eeb6974bfe9d87d93fd97765b9

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Akademický článek

Decadal-scale onset and termination of Antarctic ice-mass loss during the last deglaciation

Autor: Michael E. Weber, Nicholas R. Golledge, Chris J. Fogwill, Chris S. M. Turney, Zoë A. Thomas

Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-13 (2021)

It may have taken only a decade to repeatedly destabilize the Antarctic Ice Sheet after the last Ice Age as shown by a new data-model study. The ice sheet lost ice for centuries each time before it abruptly re-stabilized again.

Externí odkaz: https://doaj.org/article/a5a3dbab383f48168fc74ab748d6bc42

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Akademický článek

Middle to Late Pleistocene Evolution of the Bengal Fan: Integrating Core and Seismic Observations for Chronostratigraphic Modeling of the IODP Expedition 354 8° North Transect

Autor: Brendan T. Reilly, Fenna Bergmann, Michael E. Weber, Joseph S. Stoner, Peter Selkin, Laure Meynadier, Tilmann Schwenk, Volkhard Spiess, Christian France‐Lanord

Publikováno v: Geochemistry, Geophysics, Geosystems, Vol 21, Iss 4, Pp n/a-n/a (2020)

Abstract We investigate chronology and age uncertainty for the middle to upper Pleistocene lower Bengal Fan using a novel age‐depth modeling approach that factors lithostratigraphic, magnetostratigraphic, biostratigraphic, cyclostratigraphic, and s

Externí odkaz: https://doaj.org/article/479ec689ba5d44198e022818a788530c

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