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Geophysics Department Seminar - Tor Arne Johansen: Geophysics in the Arctic - Old and New Challenges
Speaker: Tor Arne Johansen
Geophysical surveying of the Arctic will receive increased interest in the years to come, both for hydrocarbon exploration due to an increasing world energy demand, and for possible monitoring of the potential thawing of today’s permanently frozen tundra. Svalbard in the Norwegian Arctic is an uplifted part of the Mesozoic sediments of the Barents Sea, and serves as a natural laboratory for geoscientists to study prospective hydrocarbon plays in this part of the Arctic.
In order to better correlate geological strata exposed on Svalbard to those explored for in the Barents Sea, land seismic profiling has been conducted at several locations to track seismic signatures of possible reservoir units. Seismic data have been acquired on frozen tundra, glaciers, and along transects starting on land proceeding onto floating ice to a successively increasing water depth. Furthermore, the effects of increase in temperature on frozen soil have been monitored by rock physics analysis of seismic data.
In this seminar we will review various analyses and types of seismic data acquired during a series of geophysical experiments in the Norwegian Arctic, and planned campaigns to take place near future.