Concept

Isotopic signature

Related publications (314)

On the suitability of partially clathrated ice for analysis of concentration and δ13C of palaeo-atmospheric CO2

The description of rapid climatic changes during the last glacial period at high northern latitudes has been largely documented through Greenland ice cores that are unique climatic and environmental records. However, Greenland ice isotopic records are bias ...

Elsevier BV2011

Volatilization induced by impacts recorded in Zn isotope composition of ureilites

Philippe Gillet, Pierre Beck

Ureilites are ultramafic achondrites formed by igneous processes early in the history of the Solar System. Ureilites are heavily depleted in volatile elements, probably by evaporation at the surface of the ureilite parent body: however the moderately volat ...

2010

Changes in atmospheric CO2 and its carbon isotopic ratio during the penultimate deglaciation

Jérôme Chappellaz

Climate models show strong links between Antarctic and global temperature both in future and in glacial climate simulations. Past Antarctic temperatures can be estimated from measurements of water stable isotopes along the EPICA Dome C ice core over the pa ...

Elsevier BV2010

Seasonal variation in nitrogen isotopic composition of bog plant litter during 3 years of field decomposition

Luca Bragazza

In this study, we describe the seasonal variation in N-15 abundance in the litter of two Sphagnum species and four vascular plant species during 3 years of field decomposition in an Italian Alpine bog. Litter bags were periodically retrieved at the end of ...

Springer-Verlag2010

Surface Enhanced NMR Spectroscopy by Dynamic Nuclear Polarization

David Lyndon Emsley, Geoffrey Bodenhausen, Pascal Miéville, Moreno Lelli, Marc Anthony Caporini, David Benjamin Roger Antoine Gajan, Mehdi Ahmadi

It is shown that surface NMR spectra can be greatly enhanced using dynamic nuclear polarization. Polarization is transferred from the protons of the solvent to the rare nuclei (here carbon-13 at natural isotopic abundance) at the surface, yielding at least ...

American Chemical Society2010

Influence of natural attenuation and river fluctuations on benzene dispersion in an alluvial aquifer subject to strong interactions with surface water

Jordi Batlle-Aguilar

A contaminated alluvial aquifer, in a former gasworks factory and discharging to an adjacent river, was the object of field and laboratory investigations to assess pollutant attenuation and dispersion. Various organic and inorganic compounds were found in ...

2010

Physiological and isotopic responses of scleractinian corals to ocean acidification

Anders Meibom, Maoz Fine

Uptake of anthropogenic CO2 by the oceans is altering seawater chemistry with potentially serious consequences for coral reef ecosystems due to the reduction of seawater pH and aragonite saturation state (Omega(arag)) The objectives of this long-term study ...

2010

Quantifying electrochemical promotion of induced bipolar Pt particles supported on YSZ

Christos Comninellis, Wolfgang Harbich, Yuehui Li, Michael Hugentobler, Chun Xia

Electrochemical promotion (EP) of CO oxidation is shown for the first time on induced bipolar Pt particles supported on yttria-stabilized zirconia (YSZ). These Pt particles are formed by sputter deposition of high-purity Pt metal followed by sintering. Con ...

Elsevier2010

Isotopic analysis of cyanobacterial nitrogen fixation associated with subarctic lichen and bryophyte species

Konstantin Svetlozarov Gavazov

Dinitrogen fixation by cyanobacteria is of particular importance for the nutrient economy of cold biomes, constituting the main pathway for new N supplies to tundra ecosystems. It is prevalent in cyanobacterial colonies on bryophytes and in obligate associ ...

Springer Netherlands2010

Constraint of the CO2 rise by new atmospheric carbon isotopic measurements during the last deglaciation

Jérôme Chappellaz

The suggestion of climatic instability during the last interglacial period (Eem), based on the bottom 10% of the Greenland Ice core Project (GRIP) isotopic profile, has been questioned because the bottom record from the neighboring Greenland Ice Sheet Proj ...

American Geophysical Union (AGU)2010

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