Zobrazeno 1 - 10
of 147
pro vyhledávání: '"Matt O'Regan"'
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-13 (2023)
Abstract Central Arctic, interglacial intervals have traditionally been associated with diverse and intense bioturbation, and abundant foraminifera, interpreted as indicating relatively low sea-ice concentrations and productive surface waters, while
Externí odkaz:
https://doaj.org/article/5b2767467e484d83a9d80d76b3c75e9a
Autor:
Marie Sicard, Agatha M. deBoer, Helen K. Coxall, Torben Koenigk, Mehdi Pasha Karami, Martin Jakobsson, Matt O’Regan
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 24, Pp n/a-n/a (2023)
Abstract Based on a 7‐member global circulation model ensemble from CMIP6/PMIP4, we compare the regional distribution of Arctic sea ice between a simulation representing the Last Interglacial (LIG) climate, with solar‐forced warming, and an ideal
Externí odkaz:
https://doaj.org/article/0acecd5c8c7e4218be9278533ec0938e
Autor:
Henrieka Detlef, Matt O’Regan, Christian Stranne, Mads Mørk Jensen, Marianne Glasius, Thomas M. Cronin, Martin Jakobsson, Christof Pearce
Publikováno v:
Communications Earth & Environment, Vol 4, Iss 1, Pp 1-11 (2023)
Marine sediment proxies for sea ice suggest that a shift to seasonal sea ice in the Lincoln Sea during the Early Holocene was related to warmer air temperatures, similar to those projected to occur under anthropogenic warming.
Externí odkaz:
https://doaj.org/article/e482466214db4374bef50d0a95ebeaf3
Publikováno v:
Arctic, Antarctic, and Alpine Research, Vol 54, Iss 1, Pp 346-367 (2022)
Dolomites in Arctic Ocean sediments are widely attributed to erosion and transport of sediments from northern Canada and Greenland. Coarse-grained dolomite-rich ice-rafted debris is often linked to iceberg transport, but the origin of fine-grained do
Externí odkaz:
https://doaj.org/article/a2f873e6455f407a8223f6ea986f003b
Autor:
Christian Stranne, Matt O’Regan, Wei-Li Hong, Volker Brüchert, Marcelo Ketzer, Brett F. Thornton, Martin Jakobsson
Publikováno v:
Communications Earth & Environment, Vol 3, Iss 1, Pp 1-10 (2022)
Microbial anaerobic oxidation of methane may not substantially mitigate projected warming-induced emissions of methane from marine hydrate-bearing sediments, according to a coupled hydraulic-thermodynamic-geomechanical hydrate model.
Externí odkaz:
https://doaj.org/article/076b94fb40b048168bb18b8569a46407
Autor:
Gabriel West, Andreas Nilsson, Alexis Geels, Martin Jakobsson, Matthias Moros, Francesco Muschitiello, Christof Pearce, Ian Snowball, Matt O’Regan
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 23, Iss 5, Pp n/a-n/a (2022)
Abstract The geomagnetic field behavior in polar regions remains poorly understood and documented. Although a number of Late Holocene paleomagnetic secular variation (PSV) records exist from marginal settings of the Amerasian Basin in the Arctic Ocea
Externí odkaz:
https://doaj.org/article/238d9c73adaf4609a1cd23fb7bedd976
Publikováno v:
Arctic, Antarctic, and Alpine Research, Vol 53, Iss 1, Pp 309-323 (2021)
Two different biostratigraphic approaches are used to identify Marine Isotope Stage 11 (MIS 11) in Arctic Ocean sediments. On the Lomonosov Ridge, globally calibrated nannofossil bioevents constrain the age of sediments back to MIS 13 (Core LOMROG12-
Externí odkaz:
https://doaj.org/article/ba3ae28ed17b417ea07094707f154429
Publikováno v:
Frontiers in Earth Science, Vol 8 (2020)
Palaeomagnetic records obtained from Arctic Ocean sediments are controversial because they include numerous and anomalous geomagnetic excursions. Age models that do not rely on palaeomagnetic interpretations reveal that the majority of the changes in
Externí odkaz:
https://doaj.org/article/e665f8be11d04d4d9a72eeb00004a64a
Autor:
Matt O’Regan, Helen K. Coxall, Thomas M. Cronin, Richard Gyllencreutz, Martin Jakobsson, Stefanie Kaboth, Ludvig Löwemark, Steffen Wiers, Gabriel West
Publikováno v:
Frontiers in Earth Science, Vol 7 (2019)
Turborotalita quinqueloba is a species of planktic foraminifera commonly found in the sub-polar North Atlantic along the pathway of Atlantic waters in the Nordic seas and sometimes even in the Arctic Ocean, although its occurrence there remains poorl
Externí odkaz:
https://doaj.org/article/f09eced7d3e041dfb541e50820f086f7
Autor:
Carolyn Wegner, Katrina E. Bennett, Anne de Vernal, Matthias Forwick, Michael Fritz, Maija Heikkilä, Magdalena Łącka, Hugues Lantuit, Michał Laska, Mateusz Moskalik, Matt O'Regan, Joanna Pawłowska, Agnieszka Promińska, Volker Rachold, Jorien E. Vonk, Kirstin Werner
Publikováno v:
Polar Research, Vol 34, Iss 0, Pp 1-19 (2015)
Arctic coastal zones serve as a sensitive filter for terrigenous matter input onto the shelves via river discharge and coastal erosion. This material is further distributed across the Arctic by ocean currents and sea ice. The coastal regions are part
Externí odkaz:
https://doaj.org/article/6adbc6a950644624b3649447bddbdd2d