Disputations

May
10

Heating and vertical winds in dayside Aurora

10 May 2017

Åsmund Skjæveland has studied the details of the atmospheric mechanisms that take the energy from the northern lights and create warm and vertical winds. Skjæveland will defend his PhD thesis on Friday 12 May at the University of Oslo.

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May
05

Zooplankton migration patterns in the Polar night

5 May 2017

Why do zooplankton migrate up and down the water column during Arctic dark season when there is apparently constant darkness? PhD candidate Julie Cornelius Grenvald has examined the Diel Vertical Migration (DVM) of zooplankton during the polar night and reveals several and complex migration patterns. Grenvald will defend her thesis on 9 May at the University of Tromsø.

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Feb
24

A dynamic study of the ionospheric footprint of the cusp/cleft over Svalbard

24 February 2017

The Earth’s cusp region is believed to be the main place of transport of the magnetosheath plasma into the ionosphere. PhD candidate Xiangcai Chen has analysed a long-term ground-based optical aurora and SuperDARN HF radar data over Svalbard to further understand the dynamics of the reconnection plasma process in the cusp region. Xiangcai will defend his PhD thesis at UNIS on 28 February.

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Jan
06

Icebergs in broken sea ice

6 January 2017

Drifting icebergs can be a serious threat to Arctic and subarctic offshore activities. PhD candidate Renat Yulmetov analysed the drift of icebergs in broken sea ice and investigated the possibility of iceberg towing in sea ice to protect offshore structures. Yulmetov will defend his PhD thesis on 12 January 2017 at UNIS.

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Dec
13

Temperature variations and trends at 90 km height in the Arctic atmosphere

13 December 2016

Silje Eriksen Holmen has investigated temperatures in the middle atmosphere (the mesosphere) over Longyearbyen and Tromsø and has found that temperature varies periodically according to atmospheric wind patterns and waves. Holmen will defend her PhD thesis at UNIS on 19 December 2016.

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Dec
09

Meroplankton in Svalbard waters

9 December 2016

Meroplankton are important in Arctic marine environment, but their dynamics and ecological role in marine coastal ecosystems are poorly understood. Eike Stübner has investigated these benthic invertebrate larvae and her research shed some light on the function of meroplankton in the Arctic. Stübner will defend her PhD thesis at UNIS on 14 December.

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Oct
14

Opening the “black box” of the Polar night

14 October 2016

Miriam Marquardt has investigated the community composition, seasonality and diversity of marine microbial eukaryotes in Svalbard waters. Marquardt will defend her PhD thesis at UNIS on Tuesday 18 October.

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Sep
23

Impurities of glacier ice

23 September 2016

The Greenland ice sheet is not entirely white. Parts of the ice sheet have darkened since 1996, leading to increased melting. PhD candidate Thomas Gölles has developed tools to study the interplay of particle accumulation, ice flow and ice melt. Gölles will defend his dissertation at UNIS on 29 September.

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Dec
11

Unravelling hidden designer of Arctic vegetation

11 December 2015

Sunil Mundra has investigated fungal richness and community structure, and their drivers at different spatial and temporal scales in the High Arctic region (Svalbard), using next generation sequencing methods. Sunil Mundra will defend his PhD thesis on 16 December at UNIS.

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Telephone: +47 79 02 33 00
Fax: +47 79 02 33 01
E-mail: post@unis.no / webmaster@unis.no
Address: P.O. Box 156 N-9171 Longyearbyen
Org. no. 985 204 454

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