000			02407pab a2200289 454500
008			180718b1998 xxu||||| |||| 00| 0 eng d
100			_aRabinovich, Alexaander B.
245			_aGeneration of meteorological Tsunamis (large amplitude seiches) near the Balearic and Kuril Islands
260			_c1998
300			_ap.27-55
362			_aJuly
520			_aExtreme atmosphere-induced seiche oscillations occasionally occur in specific inlets and bays of the world ocean causing severe damage to coastal areas, ships and port constructions. Ciutadella inlet (Menorca Island, Western Mediterranean) can be singled out as a place where such large seiches, locally known as rissaga, are quite common. Similar (although weaker) oscillations are also regularly observed in bays of Shikotan Island (South Kuril Islands, northwestern Pacific). Several spectacular events in these regions, identified in the first part of this study (Rabinovich and Monserrat, 1996), are analysed to determine the atmospheric parameters responsible for the generation of large-amplitude seiches. Their generation mechanism was shown to be quite different from that causing ordinary background oscillations. Coincidence of some external factors and certain resonance effects seem to be necessary to produce the destructive waves. In particular, rissaga waves in Ciutadella inlet were found to be related to significant atmospheric disturbances propagating from the southwest, coinciding with the orientation of the inlet, and having a phase speed of about 30 m/s, which is close to the phase speed of long waves offshore from Menorca. Pronounced resonant properties of the innter basin strongly amplify incoming waves in Ciutadella inlet. In contrast, the bays of the northwestern coast of Shikotan Island are protected from normally incident atmosphere-induced waves by the elongated Kunashir Island, hence the whole situation there is not so favorable for the excitation of large seiches. - Reproduced
650			_aKuril Islands
650			_aBalearic Islands
650			_aCiutadella
650			_aRissaga
650			_aBottom pressure measurements
650			_aAtmospheric pressure oscillations
650			_aHarbour resource
650			_aTsunami
650			_aWave generation
650			_aSeiches
650			_aLong waves
700			_aMonserrat, Sebastian
773			_aNatural Hazards
909			_a40453
999			_c40453 _d40453