摘要:

The dynamical nonequilibrium of close-packed flux tubes is driven by the torsion in the individual tubes so that, wherever tubes with the same sense of twisting come into contact, there is reconnection of their azimuthal field components. The reconnection consumes the local torsion, causing the propagation of torsional Alfven waves into the region from elsewhere along the tubes.

ISSN:0309-1929    

DOI:10.1080/03091928308209068

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

Magnetohydrodynamics (MHD) turbulence at high magnetic Reynolds numbers is considered. The mean field magnetohydrodynamic equations for the rather general case of inhomogeneous turbulence are derived using the well-known Orszag scheme. Special attention is paid to nonlinear effects which are brought about by the back reaction of the magnetic field on the motion. An equation governing the quantity β, corresponding to the magnetic gyrotropy of Pouquetet al. (1976) is derived. The diamagnetic effect, that in the nonlinear regime is accompanied by a paramagnetic effect, is considered. The nonlinear transport of large-scale field due to density inhomogeneity is discussed. A physical interpretation is presented which clarifies the mechanism of field transport in an inhomogeneously turbulent medium. Some astrophysical applications are discussed.

ISSN:0309-1929    

DOI:10.1080/03091928308209069

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

A Rayleigh integral is used to prove that an unbounded geostrophic front of uniform potential vorticity is stable with respect to small perturbations of arbitrary wavelength. The ageostrophic theory developed in this study yields a stable, near-inertial, long trapped mode. Recent oceanic observations of the increase in the energy of the inertial peak in the vicinity of fronts support the existence of this inertial trapped mode. In addition the theory yields a geostrophic mode which is expected to become unstable when the potential vorticity is not uniform.

ISSN:0309-1929    

DOI:10.1080/03091928308209070

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

By E. R. Priest, Geophys. and Astrophys. Monographs, Vol. 21, D. Reidel, Dordrecht, 1982. xx + 469 pp, Dfl. 235, US $99.00 (ISBN 90-277-1374-x).

ISSN:0309-1929    

DOI:10.1080/03091928308209071

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

Edited by C. Chiosi and R. Stalio. D. Reidel Publishing Company, xxii + 566 pp. Dfl. 140.00/US $73.50. (ISBN 90-277-1292-1). 1981.

ISSN:0309-1929    

DOI:10.1080/03091928308209072

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

Edited by J. Zierep and H. Oertel Jr., G. Braun, Karlsruhe, 577 pp. DM92-(ISBN 37650 11142) 1982.

ISSN:0309-1929    

DOI:10.1080/03091928308209073

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor