Sentences with phrase «hydrogen and oxygen isotopes»

They measure the hydrogen and oxygen isotopes to infer air temperatures at the time the snow fell, and the dust particles give a nice indication of the dusty periods (much of the dust was kicked up far away, in the Gobi Desert, rather than from sources closer to Greenland).

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

They next measured overall energy expenditure by giving volunteers water laced with hydrogen and oxygen isotopes and measuring how much was excreted in urine.

Mark, who focuses on the Andes region, developed a method of determining how much of a community's water supply is glacier - fed by analyzing the hydrogen and oxygen isotopes in water samples.

The composition of these ice cores, especially the presence of hydrogen and oxygen isotopes, provides a picture of the climate at the time.

Not exact matches

By looking at the chemistry of rocks deposited during that time period, specifically coupled carbon and sulfur isotope data, a research team led by University of California, Riverside biogeochemists reports that oxygen - free and hydrogen sulfide - rich waters extended across roughly five percent of the global ocean during this major climatic perturbation — far more than the modern ocean's 0.1 percent but much less than previous estimates for this event.

When ocean storms bump into mountains, raindrops burdened with heavy isotopes of oxygen and hydrogen are the first to precipitate.

They also used satellite precipitation data to «backsolve» the brine's origins using sodium concentrations, oxygen and hydrogen isotopes, as the isotopic composition of water reflects the condensation temperature and precipitation rate over time.

The team based its analysis on ratios of oxygen and hydrogen isotopes in ice cores drilled in East Antarctica.

«We identified the different isotopes of hydrogen and oxygen in the water, which allowed us to work out where the water came from.

First, I do think that there is a lot of work to be done in the interpretation of oxygen / hydrogen isotope values obtained at a site, and there's still plenty of disagreement in the paleo - community on how to best connect the isotopic signal in a record with climate.

Curiosity measured the same pattern in isotopes of hydrogen, as well as carbon and oxygen, consistent with a loss of a substantial fraction of Mars» original atmosphere.

First, I do think that there is a lot of work to be done in the interpretation of oxygen / hydrogen isotope values obtained at a site, and there's still plenty of disagreement in the paleo - community on how to best connect the isotopic signal in a record with climate.

Who knows, maybe some people read the Wegman Report, look at Table 1, think it actually came as is from Bradley, and confidently write of 1) «ions and isotopes of oxygen and hydrogen», 2) «speleothrems» and 3) «phonology».

1) M&W used the first, not realizing that those aren't the exact words from Bradley, which is «major ions and isotopes of hydrogen and oxygen», which is parsed (major ions) and (isotopes of H and O), because «major ions» in thsi context has a specific meaning and it has nothing to do with H&O.

But not with (ions and isotopes) of (hydrogen and oxygen), and speleotherms (when Bradley never uses that), and the odd «artifacts.»

• «Ions and isotopes of hydrogen and oxygen» uses the WR's meaning - changed miscopy of Bradley, as «ions» is not the same as «major ions.»

One tiny problem, Skip: according to M&W it's done using isotopes of oxygen and hydrogen... so, I'm still waiting for a reference.

The «ions and isotopes of hydrogen and oxygen» gaffe is explained, a href =» https://deepclimate.org/2010/08/19/mcshane-and-wyner-2010/#comment-5247″ > in this post in the M&W thread, followed later by discussion of «Quarternary» a bit later.