First project – Baltic Sea Paper to Jena 2008-09-01 Why Baltic Sea? Large amplitude Not periodic Not handled (FG5) Data ”avaliable” Unique conditions Short and long term effects
Theoretical approach 1.Farrell, W.E., 1972. Deformation of the Earth by Surface Loads, Reviews of Geophysics and Space Physics, 10, 761-797. 2.Jentzsch, G., 1997. Earth Tides and Ocean Tidal Loading. in Tidal Phenomena, pp. 145-172, eds. Wilhelm, H., Zürn, W. & Wenzel, H.-G. Springer-Verlag, Berlin Heidelberg. Spherical, elastic earth Greens function for gravity Convolution of Greens function and sea surface Newtonian effect at height Load love numbers from G-B Earth Model 1 PREM reference earth model 2
Some examples …the purpose of the following is not to present any results (everything is still preliminary), I just want to give You an idea of what I am working with and hopefully get some response to that. Please, be aware…
Stations and grid 10 degree sea surfaceBaltic sea surface
One meter water (1) StationNewtonLoadingTotalNewtonLoadingTotal Arjeplog1.793.975.760.290.690.98 Kiruna1.864.115.970.240.500.74 Kramfors2.403.996.391.592.383.97 Kungsholmsfort7.134.8912.026.613.7010.31 Mårtsbo1.373.885.250.692.553.24 Onsala1.825.116.930.391.091.48 Skellefteå1.643.895.530.671.982.66 Smögen5.475.3410.810.370.931.29 Visby1.565.046.522.214.171.124 Östersund1.713.785.480.380.991.37 Ratan1.724.245.960.872.593.46 Lycksele1.483.424.900.421.251.67 LMV1.423.985.400.652.493.14 Metsähovi0.922.953.870.682.533.22 10 degree sea surfaceBaltic sea surface All numbers in gal
One meter water (2) Distribution of the loading effect
Storm in the Baltic Sea 1872 StationNewtonLoadingTotal Gedser55.33324.839760.17 Kungsholmsfort8.35273.133911.49 Onsala-0.4211-1.1027-1.52 Smogen-3.4792-1.5830-5.06 Visby0.09190.42160.51 Sea level in Danish foot (0.3 m) All numbers in gal
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