Scientia Marina, Vol 75, No 3 (2011)

Topographic enhancement of long waves generated by an idealized moving pressure system

Alejandro Orfila
Marine Technologies and Operational Oceanography Department, IMEDEA (CSIC-UIB), Spain

Salvador Balle
Marine Technologies and Operational Oceanography Department, IMEDEA (CSIC-UIB) - Institut de Ciències del Mar (ICM-CSIC), Spain

Gonzalo Simarro
Institut de Ciències del Mar (ICM-CSIC), Marine Geology Department, Spain


We studied the influence of the topography on the oceanic response to a traveling atmospheric disturbance and the relevance of its propagation direction on the generation of seiche oscillations. A primitive equation ocean model was used to analyze the response of two harbors located in insular systems to a pressure disturbance. The spectral component at the frequency of fundamental harbor resonance was determined from these data for different propagation directions of the incoming atmospheric disturbance. A conceptual model of interferences of resonantly generated ocean waves was introduced in order to explain energy maxima obtained by the numerical model close to the most affected areas.


meteotsunami; long wave; rissaga

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