Sentences with phrase «stable oxygen isotope»

The main panel 1 data is from stable oxygen isotope measurements from the shells of macroscopic marine organisms («fossil shells»), collected by Veizer et al (1999), as re-interpreted by Royer et al (2004).

This proxy, known as the δ18O stable oxygen isotope ratio, varies in proportion to the ambient moisture.

Uses a time series of hydrographic and stable oxygen isotope (δ18O) measurements collected at a near - coastal site in Marguerite Bay to quantify the prevalence of meteoric freshwater (glacial melt plus precipitation) separately from sea ice melt

Stable oxygen isotope ratios contained in the shell can be used to infer past water temperatures.

Like the data used right through 0.02 to 66 My, the Freidrich et al collection comprises stable oxygen isotope ratios from the shells of tiny bottom - dwelling, deep - water marine organisms (benthic foraminifera).

This paper gives results from a stable oxygen isotope assessment of modern human and horse enamel δ18O values recovered from tooth enamel.

SALINITY (in strict physical oceanography terms - in PSU), mediates the amount of δ18O of seawater and ONLY the δ18O of seawater parameter along with temperature can physically change the stable oxygen isotopes of foraminifera.

Not exact matches

Analyses of samples brought back from the Apollo missions in the 1970s showed that the Moon has the same abundances of the three stable isotopes of oxygen as Earth.

By carefully micro-sampling each shell along its direction of growth and analyzing for stable carbon and oxygen isotopes and trace elements, the team reconstructed a record of seasonal variation during the lifetimes of the organisms.

The information about oxygen concentration comes from the isotopic composition of carbon or rather from the ratio between the stable carbon isotopes 12C and 13C.

I joined the team and undertook isotopic work using oxygen, nitrogen and carbon stable isotopes to assess his geographical origin and also his diet.

Lower amounts of stable hydrogen and oxygen isotopes in the ice indicate colder weather, Persoiu said.

One group of students has been drilling modern and fossil teeth to obtain samples that will be analyzed to examine stable carbon and oxygen isotope ratios.

We analyzed stable carbon and oxygen isotopes (δ13C, δ18O) of decade - old California mussel shells (Mytilus californianus) in the context of an instrumental seawater record of the same length.

Statistical analysis of the carbon and oxygen stable isotope recordsr eveals variations in the periods around 100, 11 and 3 years.A century scale connection between the 13C / 12C record and solar activity is most evident.»

Shell material was analyzed for stable isotopes of carbon (δ13C) and oxygen (δ18O) in the Earth Systems History Laboratory at Brown University (Providence, RI).

Stable isotope ratios of oxygen reflect water temperatures, with higher δ18O values indicating colder water [6], [9], [12], such as water upwelled from lower depths.

Inter - and intra-annual stable carbon and oxygen isotope signals in response to drought in Mediterranean pines

The ratio of stable isotopes oxygen - 18 and oxygen - 16 in the foraminifera is an indicator of ocean temperature.