Change search
ReferencesLink to record
Permanent link

Direct link
Palaeoglaciology of the central Tibetan Plateau
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology (INK).
2010 (English)Independent thesis Advanced level (degree of Master (Two Years)), 30 credits / 45 HE creditsStudent thesis
Abstract [en]

The glacial history of the Tibetan Plateau has long been a contentious topic with widely different reconstructions. For Tanggula Shan, an extensive mountain range on the central Tibetan Plateau, multiple glacial reconstruc- tions and studies on the glacial chronology have been presented. However, the glacial geomorphological record has been sparse resulting in insufficient data to fully infer the area’s palaeoglaciology. Focussing on four landform categories, glacial valleys, marginal moraines, hummocky terrain, and glacial lineations; a glacial geomorphological map was produced, using Landsat 7 ETM+ satellite imagery, SRTM digital elevation model, and Google Earth. This map, together with GIS analyses and available cosmogenic exposure and electron spin reso- nance ages from the study area, was used to investigate the extent of former glaciations. Cosmogenic exposure and electron spin resonance ages range from 18.4 ± 1.6 to 203.4 ± 33.2 ka (recalculated using the CRONUS calculator). The extent of the glacial footprint is restricted to the high mountain areas, and is similar in extent to earlier glacial reconstructions. This glacial footprint can tentatively be explained by a monsoonal influence in the southeast, with the influence diminishing to the northwest. Alternatively, the precipitation gradient might have resulted in cold-based ice in the west and warm-based ice in the east. These variations in ice regime could have left fewer traces of glaciation in the west, than in the east. There is no evidence supporting an ice sheet covering the entire Tibetan Plateau. Rather, the available data support a smaller ice field in the high mountain areas, with a maximum extent well before the Last Glacial Maximum.

Place, publisher, year, edition, pages
2010. , 45 p.
Keyword [en]
Palaeoglaciology, Tanggula Shan, Tibetan Plateau, glacial history, glacial geomorphology
National Category
Physical Geography
URN: urn:nbn:se:su:diva-43145OAI: diva2:354098
Life Earth Science
Available from: 2010-10-01 Created: 2010-09-29 Last updated: 2010-10-01Bibliographically approved

Open Access in DiVA

fulltext(12718 kB)245 downloads
File information
File name FULLTEXT01.pdfFile size 12718 kBChecksum SHA-512
Type fulltextMimetype application/pdf

By organisation
Department of Physical Geography and Quaternary Geology (INK)
Physical Geography

Search outside of DiVA

GoogleGoogle Scholar
Total: 245 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 260 hits
ReferencesLink to record
Permanent link

Direct link