NGRIP isotopic gas measurments from 10 to 38 kyr and temperature reconstruction for the last glacial ...
During the last four to five decades, scientists became aware that the last glacial period featured a series of abrupt climate changes, especially on the Northern Hemisphere and in Greenland. The unique archive of ice cores from Greenland where climatic information is registered and stored layer by...
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| Format: | Thesis |
| Language: | unknown |
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:unas
2013
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| Online Access: | https://dx.doi.org/10.48350/192557 https://boris.unibe.ch/192557/ |
| Summary: | During the last four to five decades, scientists became aware that the last glacial period featured a series of abrupt climate changes, especially on the Northern Hemisphere and in Greenland. The unique archive of ice cores from Greenland where climatic information is registered and stored layer by layer offers a valuable access for researchers to access the glacial climate and its variability. This thesis is a contribution to this research. Based on isotopic gas analysis of air enclosed in ice from the Greenland ice sheet, a temperature reconstruction for the NGRIP (North Greenland Ice Core Project) site, central Greenland, from 10 to 120 kyr b2k covering the whole last glacial cycle, has been derived. First, an historical introduction to the discovery of these rapid climatic variations, now called Dansgaard-Oeschger (DO) events, is given in Chap. 1. Up to now, scientists still struggle to find mechanisms which can explain this observed variability. However, it is clear, that all parts of the climate system ... |
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