Zobrazeno 1 - 10
of 180
pro vyhledávání: '"Ralf Tiedemann"'
Autor:
Heike H. Zimmermann, Kathleen R. Stoof-Leichsenring, Viktor Dinkel, Lars Harms, Luise Schulte, Marc-Thorsten Hütt, Dirk Nürnberg, Ralf Tiedemann, Ulrike Herzschuh
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-13 (2023)
Ecosystem responses to prehistoric sea-ice loss are poorly known. Using marine sedimentary ancient DNA form the Bering Sea covering the last ~20,000 years, this study reveals a transition from a sea ice-adapted ecosystem, characterized by diatoms, co
Externí odkaz:
https://doaj.org/article/df4687e3d5c44b8a917f09d259967d0a
Autor:
An-Sheng Lee, Weng-Si Chao, Sofia Ya Hsuan Liou, Ralf Tiedemann, Bernd Zolitschka, Lester Lembke-Jene
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-11 (2022)
Abstract Geochemical variations of sedimentary records contain vital information for understanding paleoenvironment and paleoclimate. However, to obtain quantitative data in the laboratory is laborious, which ultimately restricts the temporal and spa
Externí odkaz:
https://doaj.org/article/c4fca907bb214a9f8b3871869be70ce9
Publikováno v:
Frontiers in Marine Science, Vol 10 (2023)
The subarctic front (SAF) in the pelagic North Pacific is the northernmost front of the Kuroshio-Oyashio transition zone separating the subpolar and subtropical gyres and is marked by a strong sea surface temperature gradient. A complex interplay of
Externí odkaz:
https://doaj.org/article/f9bcd3b224e44ffb913fdf8965e561f2
Autor:
Thomas A. Ronge, Matthias Frische, Jan Fietzke, Alyssa L. Stephens, Helen Bostock, Ralf Tiedemann
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Abstract The transfer of vast amounts of carbon from a deep oceanic reservoir to the atmosphere is considered to be a dominant driver of the deglacial rise in atmospheric CO2. Paleoceanographic reconstructions reveal evidence for the existence of CO2
Externí odkaz:
https://doaj.org/article/12b5a8cc9a0a4d93944c45c3278007b8
Autor:
Thomas A. Ronge, Jörg Lippold, Walter Geibert, Samuel L. Jaccard, Sebastian Mieruch-Schnülle, Finn Süfke, Ralf Tiedemann
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
Abstract The millennial-scale variability of the Atlantic Meridional Overturning Circulation (AMOC) is well documented for the last glacial termination and beyond. Despite its importance for the climate system, the evolution of the South Pacific over
Externí odkaz:
https://doaj.org/article/bd2292137833479a8704cb52ab7837bb
Autor:
Shuzhuang Wu, Lester Lembke-Jene, Frank Lamy, Helge W. Arz, Norbert Nowaczyk, Wenshen Xiao, Xu Zhang, H. Christian Hass, Jürgen Titschack, Xufeng Zheng, Jiabo Liu, Levin Dumm, Bernhard Diekmann, Dirk Nürnberg, Ralf Tiedemann, Gerhard Kuhn
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
How the Antarctic Circumpolar Current (ACC) changed on glacial-interglacial time scales is not well known. Here, the authors present a 140,000 year long sediment record from the Drake passage and show both glacial-interglacial as well as millennial-s
Externí odkaz:
https://doaj.org/article/e30f746815b249a1b3c0002b3233e48b
Autor:
Igor M. Venancio, Rodrigo A. Nascimento, Thiago P. Santos, Andre L. Belem, Douglas O. Lessa, Ralf Tiedemann, Cristiano M. Chiessi, Stefan Mulitza, Ana Luiza S. Albuquerque
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
Tropical precipitation patterns will most likely be altered by future climate change, with major socioeconomic consequences for human populations that are highly reliant on water availability for subsistence like populations in northeastern (NE) Braz
Externí odkaz:
https://doaj.org/article/4b29737b642043788dee63c9770557c0
Autor:
Rong Wang, Gerhard Kuhn, Xun Gong, Boris K. Biskaborn, Rainer Gersonde, Lester Lembke-Jene, Gerrit Lohmann, Ralf Tiedemann, Bernhard Diekmann
Publikováno v:
Frontiers in Earth Science, Vol 9 (2021)
A marine sediment record from the central Bering Sea, spanning the last 20 thousand years (ka), was studied to unravel the depositional history with regard to terrigenous sediment supply and biogenic sedimentation. Methodic approaches comprised the i
Externí odkaz:
https://doaj.org/article/da33cf072f2e433a837342905a4e7119
Publikováno v:
Frontiers in Earth Science, Vol 9 (2021)
Deglacial dissolved oxygen concentrations were semiquantitatively estimated for intermediate and deep waters in the western Bering Sea using the benthic foraminiferal-based transfer function developed by Tetard et al. (2017), Tetard et al. (2021a). B
Externí odkaz:
https://doaj.org/article/d1e3bdd226f64b82a491ae65d9553366
Autor:
Wanzhang Wang, Tilo von Dobeneck, Thomas Frederichs, Yang Zhang, Lester Lembke-Jene, Ralf Tiedemann, Michael Winklhofer, Dirk Nürnberg
Publikováno v:
Frontiers in Earth Science, Vol 9 (2021)
Non-carbonaceous abyssal fine-grained sediments cover vast parts of the North Pacific’s deep oceanic basins and gain increasing interests as glacial carbon traps. They are, however, difficult to date at an orbital-scale temporal resolution and stil
Externí odkaz:
https://doaj.org/article/bda4f6cc14c047d1b58c69b1c08c4ea3