Zobrazeno 1 - 10
of 17
pro vyhledávání: '"G. R. Dickens"'
Autor:
M. Ketzer, D. Praeg, A. H. Augustin, L. F. Rodrigues, A. K. Steiger, M. Rahmati-Abkenar, A. R. Viana, D. J. Miller, A. Malinverno, G. R. Dickens, J. A. Cupertino
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023)
Abstract Seafloor methane emissions can affect Earth’s climate and ocean chemistry. Vast quantities of methane formed by microbial decomposition of organic matter are locked within gas hydrate and free gas on continental slopes, particularly in lar
Externí odkaz:
https://doaj.org/article/351f6b21603345dca93bf85e22471e16
Autor:
C. J. Hollis, T. Dunkley Jones, E. Anagnostou, P. K. Bijl, M. J. Cramwinckel, Y. Cui, G. R. Dickens, K. M. Edgar, Y. Eley, D. Evans, G. L. Foster, J. Frieling, G. N. Inglis, E. M. Kennedy, R. Kozdon, V. Lauretano, C. H. Lear, K. Littler, L. Lourens, A. N. Meckler, B. D. A. Naafs, H. Pälike, R. D. Pancost, P. N. Pearson, U. Röhl, D. L. Royer, U. Salzmann, B. A. Schubert, H. Seebeck, A. Sluijs, R. P. Speijer, P. Stassen, J. Tierney, A. Tripati, B. Wade, T. Westerhold, C. Witkowski, J. C. Zachos, Y. G. Zhang, M. Huber, D. J. Lunt
Publikováno v:
Geoscientific Model Development, Vol 12, Pp 3149-3206 (2019)
The early Eocene (56 to 48 million years ago) is inferred to have been the most recent time that Earth's atmospheric CO2 concentrations exceeded 1000 ppm. Global mean temperatures were also substantially warmer than those of the present day. As suc
Externí odkaz:
https://doaj.org/article/2c9cbda7c2704c4da455998fb6fc0496
Autor:
C. M. Miller, G. R. Dickens, M. Jakobsson, C. Johansson, A. Koshurnikov, M. O'Regan, F. Muschitiello, C. Stranne, C.-M. Mörth
Publikováno v:
Biogeosciences, Vol 14, Pp 2929-2953 (2017)
Continental slopes north of the East Siberian Sea potentially hold large amounts of methane (CH4) in sediments as gas hydrate and free gas. Although release of this CH4 to the ocean and atmosphere has become a topic of discussion, the region remai
Externí odkaz:
https://doaj.org/article/ea28cec3396e4317bdb5cde2810c1555
Publikováno v:
Climate of the Past, Vol 12, Iss 4, Pp 981-1007 (2016)
A marked switch in the abundance of the planktic foraminiferal genera Morozovella and Acarinina occurred at low-latitude sites near the start of the Early Eocene Climatic Optimum (EECO), a multi-million-year interval when Earth surface temperatures r
Externí odkaz:
https://doaj.org/article/67d36e8387b741e48dd61bc332e20587
Autor:
C. Agnini, D. J. A. Spofforth, G. R. Dickens, D. Rio, H. Pälike, J. Backman, G. Muttoni, E. Dallanave
Publikováno v:
Climate of the Past, Vol 12, Iss 4, Pp 883-909 (2016)
We present records of stable carbon and oxygen isotopes, CaCO3 content, and changes in calcareous nannofossil assemblages across an 81 m thick section of upper Paleocene–lower Eocene marine sedimentary rocks now exposed along the Cicogna Stream in
Externí odkaz:
https://doaj.org/article/4fad7282ffcb4c03b787e93745cbca54
Publikováno v:
Climate of the Past, Vol 11, Iss 3, Pp 473-493 (2015)
Major variations in global carbon cycling occurred between 62 and 48 Ma, and these very likely related to changes in the total carbon inventory of the ocean-atmosphere system. Based on carbon cycle theory, variations in the mass of the ocean carbon s
Externí odkaz:
https://doaj.org/article/19943753848642adb42e93d0ea4fce5c
Autor:
G. R. Dickens
Publikováno v:
Climate of the Past, Vol 7, Iss 3, Pp 831-846 (2011)
Enormous amounts of 13C-depleted carbon rapidly entered the exogenic carbon cycle during the onset of the Paleocene-Eocene thermal maximum (PETM), as attested to by a prominent negative carbon isotope (δ13C) excursion and deep-sea carbonate dissolut
Externí odkaz:
https://doaj.org/article/78fc76a75f914e7c96047eb13f8cd4a2
Publikováno v:
Scientific Drilling, Vol 4, Pp 22-25 (2007)
No abstract available. doi:10.2204/iodp.sd.4.08.2007
Externí odkaz:
https://doaj.org/article/175a7f14d9414c7dacaaf307cd8d5529
Autor:
M. E. Gastaldello, C. Agnini, T. Westerhold, A. J. Drury, R. Sutherland, M. K. Drake, A. R. Lam, G. R. Dickens, E. Dallanave, S. Burns, L. Alegret
Publikováno v:
Paleoceanography and Paleoclimatology. 38
The Late Miocene-Early Pliocene Biogenic Bloom (∼9–3.5 Ma) was a paleoceanographic phenomenon defined by anomalously high accumulations of biological components at multiple open ocean sites, especially in certain regions of the Indian, and Pacifi