Sentences with phrase «lake cores extracted»

Not exact matches

Building on a previous limited study of climate warming on three Arctic lakes (Science, 21 October 1994, 416), ecologist John Smol of Queens University, Kingston, Canada, and colleagues extracted sediment cores from 46 lakes in Canada, Finland, Norway, and Russia.

Using new chemical analyses of penguin guano extracted in sediment cores from a lake on the island, the researchers unraveled the history of the penguin colony.

To track how glaciers grew and shrank over time, the scientists extracted sediment cores from a glacier - fed lake that provided the first continuous observation of glacier change in southeastern Greenland.

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.

To track how glaciers grew and shrank over time, the scientists extracted sediment cores from a glacier - fed lake that provided the first continuous observation of glacier change in southeastern Greenland.

He and co-authors Ray Bradley and Malcolm Hughes used novel statistical techniques to extract more information than ever before from so - called «proxy records» — records of tree rings, ice cores, corals, and lake sediments — as well as «a smattering of historical [ie., written] records.»