Zobrazeno 1 - 10
of 956
pro vyhledávání: '"H. Stoll"'
Autor:
M. Bartolomé, A. Moreno, C. Sancho, I. Cacho, H. Stoll, N. Haghipour, Á. Belmonte, C. Spötl, J. Hellstrom, R. L. Edwards, H. Cheng
Publikováno v:
Climate of the Past, Vol 20, Pp 467-494 (2024)
Reconstructing of past hydroclimates at regional scales during the Common Era (CE) is necessary to place the current warming in the context of natural climate variability. Here we present a composite record of oxygen isotope variations during last 25
Externí odkaz:
https://doaj.org/article/15808c02af9846b8a9dbda7993f8be3f
Autor:
O. Kost, S. González-Lemos, L. Rodríguez-Rodríguez, J. Sliwinski, L. Endres, N. Haghipour, H. Stoll
Publikováno v:
Hydrology and Earth System Sciences, Vol 27, Pp 2227-2255 (2023)
Cave-monitoring studies clarify the climatic, surface vegetation, and karst processes affecting the cave system and lay the foundation for interpreting geochemical stalagmite records. Here we report the monitoring of cave air, bedrock chemistry, and
Externí odkaz:
https://doaj.org/article/c8563c151cbe4b6189cb04a9074f5618
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
Trace elements and calcite fabrics in stalagmites are increasingly employed as indicators of past environmental conditions. The drivers of trace element concentrations and fabrics reflect a complex interplay of factors during crystal growth, and accu
Externí odkaz:
https://doaj.org/article/06446ec15a254e85b14a8a2b33145081
Publikováno v:
Biogeosciences, Vol 19, Pp 5633-5644 (2022)
Recent advances in geochemical techniques mean that several robust proxies now exist to determine the past carbonate chemistry of the oceans. Foraminiferal δ11B and alkenone carbon isotopes allow us to reconstruct sea-surface pH and pCO2, respective
Externí odkaz:
https://doaj.org/article/36420020220246cdafdd22d199aa3e36
Publikováno v:
Biogeosciences, Vol 19, Pp 5007-5019 (2022)
Coccolithophores are calcifying marine phytoplankton whose intracellularly produced calcite plates, coccoliths, have been the dominant source of calcium carbonate in open-ocean settings since the Cretaceous. An open question is whether their calcific
Externí odkaz:
https://doaj.org/article/6e789fba96d5493aa133609b6cffd528
Autor:
A. Moreno, M. Iglesias, C. Azorin-Molina, C. Pérez-Mejías, M. Bartolomé, C. Sancho, H. Stoll, I. Cacho, J. Frigola, C. Osácar, A. Muñoz, A. Delgado-Huertas, I. Bladé, F. Vimeux
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 10159-10177 (2021)
For the first time, this article presents a large dataset of precipitation isotopic measurements (δ18Op and δ2Hp) sampled every day or 2 d from seven sites on a west-to-east transect across northern Spain for 2010–2017. The main aim of this study
Externí odkaz:
https://doaj.org/article/a495876e7eda4c2796259fe160a76dd0
Publikováno v:
Biogeosciences, Vol 18, Pp 1909-1916 (2021)
Coccolithophores play a key role in the marine carbon cycle and ecosystem. The carbonate shells produced by coccolithophore, named as coccolith, could be well preserved in the marine sediment for millions of years and become an excellent archive for
Externí odkaz:
https://doaj.org/article/54910cfc95224d14accf1617d3dbdd59
Publikováno v:
Climate of the Past, Vol 16, Pp 2017-2037 (2020)
Coccolithophores contribute significantly to marine primary productivity and play a unique role in ocean biogeochemistry by using carbon for photosynthesis (soft-tissue pump) and for calcification (carbonate counter pump). Despite the importance of i
Externí odkaz:
https://doaj.org/article/1256684d56034038862da6b5ea852b2a
Publikováno v:
Biogeosciences, Vol 15, Pp 4759-4775 (2018)
Quantification sinking velocities of individual coccoliths will contribute to optimizing laboratory methods for separating coccoliths of different sizes and species for geochemical analysis. The repeated settling–decanting method was the earlies
Externí odkaz:
https://doaj.org/article/4f963b9a3b214b06b7862af796682536
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