Sentences with phrase «lake bottom sediments»

One of my favorites, lake bottom sediments, from multiple lakes, give a better Global Temperature graph.

Not exact matches

Christine Lane of the University of Oxford and her colleagues were looking for clues to past climate change in the sediments at the bottom of Lake Malawi when they came across a layer of ash from the Toba eruption.

Cohen and his colleagues figured out the lake's environmental history 1,500 years into the past by taking cores of the lake's bottom sediments and analyzing the biological and chemical history stored in the sediment layers.

The remains of fish, algae, molluscs and small arthropods are preserved in the annual layers of sediment deposited in the bottom of Lake Tanganyika.

Plans for lowering instruments into the lake to explore the bottom sediment will be postponed until an extra environmental assessment has been completed.

Word that a lake sat close to ground zero piqued our interest in mounting a field trip there because lake - bottom sediments can store a detailed record of events that occurred in the surrounding region, the basis of paleolimnological studies.

Florensky instead believed the lake was older than the Tunguska event, based on having found loose sediments as thick as seven meters below the bottom of the lake.

After completing just a few runs across Lake Cheko with our high - resolution acoustic profiler, it became clear that the sediments blanketing the lake's bottom were more than 10 meters thLake Cheko with our high - resolution acoustic profiler, it became clear that the sediments blanketing the lake's bottom were more than 10 meters thlake's bottom were more than 10 meters thick.

To reach this conclusion, the scientistsa team of six geologists and geographers led by Yongsong Huang of Brown Universityanalyzed sediments from the bottoms of two Central American lakes: Lake Alta Babicora in Northern Mexico and Lake Quexil in Northern Guatemala.

If the lake were thousands of years old, it would probably have a flat bottom, the result of fine sediments gradually filling it up.

The other subject of the research was the impact of native chironomids, which are insect larvae that live in the sediment on the lake bottoms.

Gill examined data on sediment cores from the bottom of lakes, tree rings and cores from speleothems in caves.

To study the advance and retreat of glaciers over nearly 10,000 years, scientists extracted sediment cores from the bottom of glacier - fed Kulusuk Lake in southeast Greenland.

They found that high rates of carbon accumulation in lake sediments were stimulated by several factors, including «thermokarst erosion and deposition of terrestrial organic matter, -LSB-...] nutrient release from thawing permafrost that stimulated lake productivity, and by slow decomposition in cold, anoxic lake bottoms.»

The clues came from DNA in sediment that had become trapped in accretion ice — the lake water that freezes to the bottom of the massive glacier (S. A. Bulat et al..

«When we collect sediment from the bottom of the lake, we can recognize sequences of plants that grew in a given area based on the shape of the fossil pollen left behind,» Shuman explains.

In coming months, team member Avery Cook Shinneman, a biologist at the University of Washington, plans to analyze sediments taken from the bottoms of Mongolian lakes.

Scientists peered into the Sahara's verdant past by analyzing sediment samples drilled out of the bottom of one of the desert's last living lakes.

Methane from freshwater is often a byproduct of bacterial metabolism, as they break down organic matter under low - oxygen conditions, like in the sediment at the bottom of a lake.

Once they reached the lake, they sampled both water and sediment from the lake bottom.

They pulled a 5 cm wide, 3m deep cylinder of sediment from the bottom of Kirman Lake and analyzed it in 1 cm sections, creating the most detailed and continuous paleo - environmental record of California ever.

It's been found in decades old sludge at the bottom of lakes, in sewage, wastewater, surface water, and sediments.

The researchers analysed a sediment core pulled from the bottom of Lake Bosumtwi, Ghana's only natural lLake Bosumtwi, Ghana's only natural lakelake.

Scientists can take sediment cores from the bottom of a glacier - fed lake to see how much silt and organic material settled to the lake bottom over time, along with other indicators of a changing climate.

From the University of California — Berkeley Deep sediments are unparalleled record of biotic changes over past 200,000 + years University of California, Berkeley, scientists are drilling into ancient sediments at the bottom of Northern California's Clear Lake for clues that could help them better predict how today's plants and animals will adapt to climate change...

Headed by University of Colorado scientist Yarrow Axelford, the study retrieved the sediment core from the bottom of a thirty foot deep lake on Baffin Island.

A recent study of ancient lake - bottom sediments found layers of charcoal next to layers of shrub pollen, suggesting a close link between shrubs and wildfire.

Natural gas reserves come from large quantities of plant and animal remains that have accumulated between layers of sediment on the bottoms of lakes and oceans over millions of years.

In a small lake with a poorly oxygenated bottom, the presence of laterally continuous laminated sediment that includes well - known periodicities in rhythmite thickness is interpreted as representing annually generated varves that correspond to seasonal variations in sedimentation.