TY - JOUR

T1 - Dependence of physical and biotic processes variability in the ocean on Earth rotation speed

AU - Staritsyn, D. K.

AU - Foux, V. R.

AU - Belonenko, T. V.

N1 - Publisher Copyright: © 2013 Sankt-Petersburgskii Universitet. All rights reserved.

PY - 2013

Y1 - 2013

N2 - Wavelet-based analysis of the Earth rotation speed (Ers) time series highlighted various periods in speed oscillation induced by tidal forces. Auto- and cross-correlation analyses of many years Ers variation and changes in some oceanographic and biotic processes have shown either direct or inverse relation between the studied processes at certain phase shift s. There were found persistent cross-correlation links between the Ers and the population dynamics of halibut (r = 0,79). Herring abundance and the Ers have had a maximum cross-correlation coefficient r = 0,65 at the 2-year shift relative to Ers. Fluctuation in the pollock abundance is inversely proportional to variation of the Ers (r = -0,64) at the phase lag 3 years. A hypothesis is stated and hydrodynamically interpreted with respect to possible mechanisms of processes variability due to fluctuations of the Ers, associated with the action of Coriolis force which determines many dynamic and thermodynamic processes in the ocean and atmosphere. We received an analytical solution of motion equations to describe the balance between the inertial force and the Coriolis force, as a linear approximation. The solution shows that increasing amplitude vibrations lose dynamic stability under certain circumstances and transform into large-scale vortices, determining appropriate mass transport and properties. Inertial flow will contain the same harmonics as the rotation of the Earth, and hence the transport (advection) of the properties will have the same frequency of excitation as the rotation of the Earth.

AB - Wavelet-based analysis of the Earth rotation speed (Ers) time series highlighted various periods in speed oscillation induced by tidal forces. Auto- and cross-correlation analyses of many years Ers variation and changes in some oceanographic and biotic processes have shown either direct or inverse relation between the studied processes at certain phase shift s. There were found persistent cross-correlation links between the Ers and the population dynamics of halibut (r = 0,79). Herring abundance and the Ers have had a maximum cross-correlation coefficient r = 0,65 at the 2-year shift relative to Ers. Fluctuation in the pollock abundance is inversely proportional to variation of the Ers (r = -0,64) at the phase lag 3 years. A hypothesis is stated and hydrodynamically interpreted with respect to possible mechanisms of processes variability due to fluctuations of the Ers, associated with the action of Coriolis force which determines many dynamic and thermodynamic processes in the ocean and atmosphere. We received an analytical solution of motion equations to describe the balance between the inertial force and the Coriolis force, as a linear approximation. The solution shows that increasing amplitude vibrations lose dynamic stability under certain circumstances and transform into large-scale vortices, determining appropriate mass transport and properties. Inertial flow will contain the same harmonics as the rotation of the Earth, and hence the transport (advection) of the properties will have the same frequency of excitation as the rotation of the Earth.

KW - Cross correlation-analyses

KW - Hydrodynamic interpretation

KW - Speed of rotation of the earth

KW - Wavelet analysis

UR - http://www.scopus.com/inward/record.url?scp=85044766904&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:85044766904

VL - 2013

SP - 129

EP - 134

JO - Вестник Санкт-Петербургского университета. Науки о Земле

JF - Вестник Санкт-Петербургского университета. Науки о Земле

SN - 1812-9323

IS - 2

ER -