Analysis Of High Frequency Ground Penetrating Radar Measurements In Comparison To Detailed Snow Profiles On Antarctic Snow
Snow stratigraphy in Antarctica is strongly influenced by wind. Yearly accumulation is always masked by intermediate erosion and deposition events. This results in a complex stratigraphy. Kohnen Station has a higher accumulation than the very low accumulation areas of East Antarctica and therefore i...
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| Format: | Bachelor Thesis |
| Language: | English |
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Stockholms universitet, Institutionen för naturgeografi
2015
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| Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-119504 |
| Summary: | Snow stratigraphy in Antarctica is strongly influenced by wind. Yearly accumulation is always masked by intermediate erosion and deposition events. This results in a complex stratigraphy. Kohnen Station has a higher accumulation than the very low accumulation areas of East Antarctica and therefore is suited to investigate the complex stratigraphy. Here we use GPR at a frequency of 1.6 GHz to resolve the stratigraphy. We compared the GPR measurements with detailed snow profiles measured using density profiles. Three different experimental set ups were used to give a first overview of this method. In additional near-infrared and translucent images detailed depositional features as great variability in layer thickness and cross-bedding are visible. ,ur results show very complex patterns which are not easily correlated to other features and not necessarily to yearly accumulation. |
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