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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
The analysis of glacial retreat of selected mountain regions of New Zealand and natural hazards from GLOFs
 Brambus, Ondřej ; Vilímek, Vít (advisor) ; Šobr, Miroslav (referee)
This thesis analyses the glacier fluctuations in New Zealand since late Pliocen until today (2017) and evaluates GLOFs (Glacier Lake Outburst Floods) hazards from all proglacial lakes of New Zealand. Background research of a wide range of scientific sources was used to describe New Zealand glacier fluctuations during the last ~2.6 Ma, uncover local climatic and tectonic specifics, describe uneven behaviour of different glacier types and summarise current knowledge about climatological forcings to New Zealand glaciers. Compared to the timing of glaciations in the Norther Hemisphere, an earlier onset of LGM (Last Glacial Maximum) and LIA (Little Ice Age) was recorded in New Zealand. A dramatic glacier advance of short- to medium-response time glaciers was recorded between 1983 and 1999. This advance was caused by changes of atmospheric and oceanic circulation patterns around New Zealand. A detailed study of the past events revealed that really few events were recorded in New Zealand history. While englacial outburst floods are relatively common from Franz Josef Glacier, no moraine dam rupture and only two GLOFs from a proglacial lake were recorded in New Zealand history. Inventory of proglacial lakes of New Zealand completed from remote sensing data was done to further evaluate the hazards of GLOFs. 25...
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