Oxygen Isotopes
Palaeotemperature estimation in the Holsteinian Interglacial (MIS 11) based on oxygen isotopes of aquatic gastropods from eastern Poland
... on oxygen isotopes of freshwater snail shells is verified by pollen (Bińka and Nitychoruk 1995, 1996; Krupiński 1995, 2000; Bińka et ...b), oxygen and carbon isotopes (Szymanek 2016; Szymanek ...
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What drives interannual variation in tree ring oxygen isotopes in the Amazon?
... between oxygen isotopes ( δ 18 O) and environmental variables have often been the basis for paleoclimate reconstructions, but relying on empirical correlations alone without an understanding of the ...
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Tracing fluids during medium to ultra high pressure metamorphism: insights by combined in situ oxygen isotopes and trace element analysis
... While oxygen signatures are efficiently homogenised at the WR scale, even if the mineral data show a convergence in Sr/Pb in different samples, the convergence in Sr/Pb is not observed in the WR (Figure 4 - ...and ...
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Oxygen isotopes in tree rings record variation in precipitation δ18O and amount effects in the south of Mexico.
... 600 masl) correlated with nearby coastal rainfall amounts (Zacatecoluca, El Salvador, 170 masl, r = 0.75) and with rainfall amounts at the nearest climate station (Ixtepec, Mexico, 750 km north, 75 masl, r = 0.63) but ...
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Quasifree (p, 2p) Reactions on Oxygen Isotopes: Observation of Isospin Independence of the Reduced Single-Particle Strength
... exotic oxygen isotopes at the R 3 B=LAND setup with incident beam 59 energies in the range of 300 – 450 ...The oxygen isotopic chain offers a large variation of separation 60 energies that allows for ...
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Oxygen isotopes as a tool to quantify reservoir-scale CO2 pore-space saturation
... the oxygen isotope shift observed in the reservoir water during Otway 2Bext was relatively small, the oxygen isotope- based result compares well with independent measures from pulsed neutron logging ...
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Relationship between the Northern Pacific Gyre Oscillation and tree-ring cellulose oxygen isotopes in northeastern Japan
... least twice for each sample using both a continuous flow high-temperature conversion elemental analyzer (TC/ EA), as well as a Thermo Finnigan MAT253 mass spec- trometer at the Tokyo Institute of Technology (Sakashita et ...
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Oxygen isotopes in tree rings show good coherence between species and sites in Bolivia
... Brienen a a Department of Ecology and Global Change, School of Geography, University of Leeds, Leeds LS2 9JT, UK School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK N[r] ...
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Semi-Lagrangian transport of oxygen isotopes in polythermal ice sheets: implementation and first results
... Abstract. Modelling the evolution of the Earth system on long timescales requires the knowledge and understand- ing of driving mechanisms, such as the hydrological cycle. This is dominant in all components of the Earth’s ...
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A millennial summer temperature reconstruction for northeastern Canada using oxygen isotopes in subfossil trees
... der (AD 1600–1650) and Spörer (AD 1410–1480) minima (Fig. 6). A simple re-sampling method involving 1000 iter- ations of re-sampling (bootstrapped) has demonstrated that the low temperature periods were always associated ...
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Oxygen Isotopes and Volatiles in Martian Meteorite
... Sm-Nd isotopes show that DaG 476, Dho 019, and QUE 94201 share a pseudoisochron with nakhlites Nakhla, Lafayette, and Governador Valadares, while enriched and intermediate shergottites share a separate ...
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Estimation of Residence Times and Recharge Area of Groundwater in the Moulares Mining Basin by Using Carbon and Oxygen Isotopes (South Western Tunisia)
... and oxygen-18 in Groundwater are active since Mio-Plio-Quaternary and Upper Cretaceous aquifers lead to the identification of paleorecharged water probably during Late Pleistocene and Early to Middle ...
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Carbon, Chloride, and Oxygen Isotopes as Tracers of Interbasin Groundwater Flow at La Selva Biological Station, Costa Rica
... in question is between liquid water and water vapor (Kendall and Caldwell 1998). Kinetic fractionations are a result of reactions that are considered unidirectional such as many biological reactions or an otherwise ...
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Quasifree (p, 2p) Reactions on Oxygen Isotopes: Observation of Isospin Independence of the Reduced Single-Particle Strength
... Ar beam was accelerated up to 500 MeV=u and directed onto a Be target. The heavy reaction fragments were selected in the fragment separator FRS according to their magnetic rigidity [26] and transported to the ...
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Reconstructing past atmospheric circulation changes using oxygen isotopes in lake sediments from Sweden
... found in almost all lakes wherever the macronutrients of Si, N and P are sufficient to sustain productivity (Leng and Barker, 2006). In high latitude lakes diatom blooms occur both immediately after the ice break up, ...
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Thermoregulatory adaptations of Acrocanthosaurus atokensis - evidence from oxygen isotopes
... The Acrocanthosaurus specimen is assumed to retain an original isotopic signature, based on a lack of linear correlation between δ 18 Ophosphate and structural δ 18 Ocarbonate, equal s[r] ...
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Observations of nitrogen and oxygen isotopes in the low energy cosmic rays
... The curves represent the smoothed isotope response used to obtain a new range correction for helium.. electron pickup, which reduces the relative stopping power[r] ...
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Sources of Holocene variability of oxygen isotopes in paleoclimate archives
... water isotopes has been captured in numerous archives and used to infer past climate ...Water isotopes do reflect variability in the hydrology, but are better interpreted in terms of re- gional hydrological ...
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Modeling oxygen isotopes in the Pliocene: Large-scale features over the land and ocean
... HadCM3 has a resolution of 3.75∘ × 2.5 ∘ with 19 vertical levels in the atmosphere and 1.25∘ × 1.25 ∘ with 20 vertical levels in the ocean. It uses the Gregory and Rowntree [1990] convection scheme, a large-scale cloud ...
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Simulated oxygen isotopes in cave drip water and speleothem calcite in European caves
... Abstract. Interpreting stable oxygen isotope (δ 18 O) records from stalagmites is still one of the complex tasks in speleothem research. Here, we present a novel model-based approach, where we force a model ...
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