SEICHE OSCILLATIONS IN LAKE VALUNDEN (SPITSBERGEN)
Rubrics: ORIGINAL ARTICLES
Authors:
1.
The University Center in Svalbard, Longyearbyen
2.
Shirshov Institute of Oceanology, Russian Academy of Sciences
Type:
Article
Pages:
from 1
to 5
Status:
Published
Received:
25.04.2016
Accepted:
25.04.2016
Published:
25.04.2016
Language:
English
Keywords:
Seiches under ice, Lake Valunden, Spitsbergen, tidal forcing
Abstract (English):
We study seiche oscillations under ice cover in Lake Valunden. The lake is connected to the fjord in Spitsbergen by a narrow (10~m) channel. The length of the lake is 1300~m and its width is 600~m. Mean depth of the lake is 10--11~m. Forcing of seiches in the lake occurs due to the tides. Wind does not have a notable forcing effect. Tidal currents raise and lower the ice cover plate in the lake and the ice cover oscillates with its natural seiche frequencies. Two modes of seiche oscillations exist in the lake. The longitudinal mode has a period of 240--266~s and the transversal mode has a period of 128--145~s.
We study seiche oscillations under ice cover in Lake Valunden. The lake is connected to the fjord in Spitsbergen by a narrow (10~m) channel. The length of the lake is 1300~m and its width is 600~m. Mean depth of the lake is 10--11~m. Forcing of seiches in the lake occurs due to the tides. Wind does not have a notable forcing effect. Tidal currents raise and lower the ice cover plate in the lake and the ice cover oscillates with its natural seiche frequencies. Two modes of seiche oscillations exist in the lake. The longitudinal mode has a period of 240--266~s and the transversal mode has a period of 128--145~s.
Keywords:
Seiches under ice, Lake Valunden, Spitsbergen, tidal forcing
Seiches under ice, Lake Valunden, Spitsbergen, tidal forcing
1. Blackman, R. B., Tukey, J. W. The Measurement of Power Spectra From the Point of View of Communications Engineering - New York: Dover., 1958. - 190 pp.
2. Marchenko, A. V., Morozov, E. G., Muzylev, S. V. A tsunami wave recorded near a glacier front, // Natural Hazards and Earth System Sciences, 2012. - v. 12 - p. 415.
3. Merian, J. R. Ueber die Bewegung tropfbarer Flüssigkeiten in Gefässen [On the motion of drippable liquids in containers] (thesis) - Basel: Schweighauser., 1828.
4. Proudman, J. Dynamical Oceanography - London: Methuen., 1953. - 225 pp.
5. Rabinovich, A. B. Handbook on Coastal and Ocean Engineering (Ed. Y. C. Kim), Chapter 9, Seiches and harbor oscillations - Singapore: World Scientific Publ.., 2009. - 193-236 pp.
