Summary
Results of a calculation of the spectrum of eigenoscillations, spatial structure and energy characteristics of the M2-tidal wave in the paleocean for nine periods of the Phanerozoic are discussed. It has been shown that consolidation of the continents causes attenuation of the semi-diurnal and amplification of the diurnal eigenoscillations and vice versa, isolation of the continents contributes to amplification of the semi-diurnal oscillations and attenuation of the diurnal ones. Changes in the resonant properties of the World Ocean result in a reconstruction of spatial structure of the tides and in evolution of the tidal energy dissipation. As it retreats to the past, the tidal energy dissipation first decreases and then, beginning from the period between the Late Carboniferous — Early Permian, increases reaching its maximum in the Early Cambrian.
Zusammenfassung
Es werden die Ergebnisse einer Berechnung des Spektrums der Eigenschwingungen, der räumlichen Struktur und der Energieverteilung der M2-Tide im Paläo-Ozean für neuen Perioden des Phanerozoikums diskutiert. Es konnte gezeigt werden: Die Verdichtung der Kontinente führte zu einer Schwächung der halbtätigen und Verstärkung der eintägigen Eigenschwingungen, die Trennung der Kontinente führte dagegen zur Vergrößerung der halbtätigen und Verringerung der ganztägigen Schwingungen. Änderungen in den Resonanzeigenschaften des Weltozeans beruhen auf einer Änderung der räumlichen Struktur der Gezeiten und auf der Entwicklung der Vernichtung der Gezeitenenergie. DAvor nahm die Vernichtung der Gezeitenenergie zuerst ab und dann, beginnend in der Periode zwischen spätem Karbon und frühem Perm, wuchs sie und erreichte ihr Maximum im frühen Kambrium.
Résumé
Les résultats d'un calcul du spectre des ondes propres, de la structure spatiale et des caractéristiques énergétiques de l'onde de marée M2 dans le Paleo-ocean sont étudiés pendant neuf périodes du Phanérozoïque. Il a été montré que la densification des continents provoque une atténuation de l'onde semi-diurne et une amplification de l'onde diurne et inversement la séparation des continents contribue à l'amplification de l'onde semi-diurne et à l'affaiblissement de l'onde diurne. Les modifications des propriétés de résonance de l'océan mondial résultent d'un changement de la structure spatiale des marées et de l'évolution de la dissipation de l'énergie des marées. En remontant dans le temps, la dissipation de l'énergie des marées décroît d'abord, puis à partir du début de la période Carbonifère supérieur — Permien inférieur croît et atteint son maximum pendant le Cambrien inférieur.
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Gotlib, V.Y., Kagan, B.A. A reconstruction of the tides in the paleocean: Results of a numerical simulation. Deutsche Hydrographische Zeitschrift 38, 43–67 (1985). https://doi.org/10.1007/BF02226669
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DOI: https://doi.org/10.1007/BF02226669