Rowan Peter Romeyn

Disputas - Master of Science Rowan Peter Romeyn

Master of Science Rowan Peter Romeyn will on 22 March at 12.15 publically defence his thesis for the PhD degree in Science.

Title of the PhD thesis:

«Cracking into Cryoseismology »

Popular scientific abstract: 

The cryosphere groups the parts of the earth that are frozen either year-round or seasonally and contributes to global climate by, e.g., reflecting sunlight from snow and ice or releasing methane trapped in permafrost. The physical properties of the frozen parts of the earth also impacts directly on e.g., construction and maintenance of roads in cold regions or transportation across floating ice sheets. In this thesis we use geophones that measure seismic vibrations in the ground. We found that vibrations produced by thermal contraction stresses and cracks can be used to monitor variation in the stiffness of the ground. We also found that the frequency of sounds emitted by floating ice sheets can be used to estimate their thickness. This thesis demonstrates that measuring seismic vibrations gives useful insight into the physical properties and processes of ice and frozen ground and how they vary over seasonal to yearly timescales.
 

 

 Supervisors:

  • Professor Alfred Hanssen, Institutt for geovitenskap, UiT (hovedveileder)  

  • Professor Tor Arne Johansen, Institutt for geovitenskap, Universitetet i Bergen  

Evaluation Committee:

  • Professor Anne Mangeney, Institut de Physique du Globe de Pari, Université de Paris, France (1. opponent)  
  • Professor Hanne Christiansen, Department of Arctic Geology, UNIS (2. Opponent)  
  • Professor Yngve Birkelund, Department of Physic and Technology, UiT (internal member and leader of the committee) 

Leader of the public defence:

Professor Anders Schomacker, Department of Geosciences, UiT, will lead the public defense.

 Opposition ex auditorio:

If you have any questions for the candidate during the public defence, please send an e-mail to leader of the public defence. They will announce your questions during the defence.

 Trial lecture:

The trial lecture is held on Tuesday 22 March at 09.15 in the same auditorium.

The title of the trial lecture is:

«Climate change effects on the cryosphere and the role of ice mechanics on its response»

 Streaming:

The trial lecture and the public defense will be streamed via these links:

Når: 22.03.22 kl 12.15–15.00
Hvor: Teknologibygget auditorium 1.022
Sted: Digitalt, Tromsø
Målgruppe: Ansatte, Studenter, Gjester / eksterne, Inviterte
Kontakt: Gabriela Sirbu
E-post: gabriela.sirbu@uit.no
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