Earthquake distribution and volcanism in Kamchatka,Kurile Islands,and Hokkaido Part 1: Kamchatka and northern Kuriles     

Václav Hanuš  Jiří Vaněk  Reviewer J. Zahradník 《Studia Geophysica et Geodaetica》1984,28(1):36-55

Summary The morphology of the Wadati-Benioff zone in the region of Kamchatka and Northern Kuriles, based on the distribution of 1102 earthquake foci, verified the existence of an intermediate depth aseismic gap and its relation to active andesitic volcanism. A system of deep seismically active fracture zones, genetically connected with the process of subduction, was delineated in the continental plate and confirmed by the results of deep seismic sounding. Two of these fractures, dipping toward the subduction zone, may be considered as the principal feeding channels for active and Holocene volcanoes of the continental volcanic belts of Kamchatka.  相似文献   

Precession-nutation torque in terms of the stokes constants     

Miloš Šidlichovský  Reviewer O. Novotný 《Studia Geophysica et Geodaetica》1984,28(1):1-8

um nu-mau m nuuau u auumu m nm ma u. m mu u¶rt;uu¶rt;a m ma nuua u uu.  相似文献   

Connection between the upper ionospheric region of VLF chorus occurrence and the plasmapause position     

František Jiříček  Pavel Tříska  O. A. Maltseva  E. E. Titova  T. A. Yakhnina  Reviewer S. Fischer 《Studia Geophysica et Geodaetica》1986,30(4):404-410

Summary The occurrence zone of the VLF chorus in the upper ionosphere appears at L-shells lower than plasmapause position L_pp; with increasing geomagnetic activity the spatial dimension of the zone diminishes, its upper boundary being shifted in correspondence with the plasmapause position, the lower remaining practically without change(L=2.0÷2.5). Calculations of propagation paths have shown that the similarity of the VLF chorus spectrum at different upper-ionospheric latitudes as well as the large spatial dimension of the zone of observation can be explained as special features in the propagation of VLF waves from an equatorial source, starting in the vicinity of the plasmapause with different initial normal angles.

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a umauu u ana amu L-, u L_pp (L_pp — nu nana); uu aum amumu nmam a am, nu aua am mmmuu uu nu nana, a u mam namuu u(L=2.0÷2.5). am mamu naam, m n¶rt;u nm a au uma u, ma a nmam ama a¶rt;u, m m mu anmau m amua umua, an amu nana, uu au au.

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Remarks on the statistical stability of the geophysical triplet     

Jiří Horák  Reviewer J. Navrátil 《Studia Geophysica et Geodaetica》1986,30(4):417-421

Summary Theorem of the stability of the geophysical triplet and baroclinic fluid are presented, based on the equivalence of dynamic systems of the hydrodynamic type, founded on a certain class of regular non-linear systems.

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a nmu uammu ¶rt;uauu umu¶rt;¶rt;uau muna a n¶rt; a m ¶rt;m m mumuuu munma u au u¶rt;mu.

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On the possibilities of observing ballistic plasma wave processes in the magnetosphere     

E. D. Poezd  V. N. Oraevskij  Vladimír Fiala  Pavel Tříska  Reviewer S. Fischer 《Studia Geophysica et Geodaetica》1987,31(2):197-212

Summary The conditions are studied under which ballistic effects of transmission of waves through opacity barriers can be observed in magnetospheric experiments on board satellites. The mechanism of this effect consists of the regeneration of the radiation beyond the barrier by resonance electrons, modulated by a quasimonochromatic wave incident and reflected from the barrier. Ballistic processes in continuously inhomogeneous plasma are studied. Detailed analysis has been carried out for a barrier with a parabolic density profile. Recommendations are presented as to experimental procedures in circumterrestrial space and data processing. The possibilities are studied of observing ballistic effects in the course of active space experiments with sources of intensive broadband turbulence such as beam of charged particles, injected into the magnetosphere.

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¶rt;a u, nu m ¶rt; nmu num aum na m a¶rt;am aumuu m n¶rt;u a namu, au m mum auu uu a a au mau, n¶rt;uau auamu , na¶rt;a a a u maa m . am aumuu n na¶rt;¶rt; na. ma u n¶rt; ¶rt; aa naauu nu nmmu. a ¶rt;auu n n¶rt;u numa nmam u n am ¶rt;a. ¶rt;am m a¶rt;u aumuu m ¶rt; amu uu num umuau umu un mmmu, mauu, a nu a amu umu aum.

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КРИТИКА     

Milan Burša  Jiří Vaněk  Jan Gruntorád 《Studia Geophysica et Geodaetica》1987,31(1):109-111

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On the algebraic structure of particle motion in a field of turbulence     

Jiří Horák  Reviewer J. Navrátil 《Studia Geophysica et Geodaetica》1987,31(3):315-323

Summary The motion of particles in a turbulent flow is described by means of algebraic physics. The initial concepts are structurally ordered groupoids, algebras of observables, logically dependent on them, with couplings and the non-canonic transition between two Hamiltonians. The non-canonic transition leads to the substitution of time t by a new parameter. Its real counterpart gives the lower limit of the size of the time step in the differential equation of transfer, based on the semi-empirical image of turbulent diffusion.

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uu amu mm muu nua ¶rt;mau aau uuu. ¶rt;u nmuu m mm n¶rt;nnu¶rt;, uu m u auu a a¶rt;a u u auu n¶rt; ¶rt; ¶rt;aumuaau. auu n¶rt; nu¶rt;um a u t naam. ¶rt;mum aa n¶rt;m uau aa am au na, nua a nnuu au mm ¶rt;uuu.

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Stress in the lithosphere generated by terrain topography and density inhomogeneities in the earth's crust     

Jiří Trešl  Vincenc Vyskočil  Miloš Hübner  Reviewer K. Pěč 《Studia Geophysica et Geodaetica》1987,31(2):145-155

Summary The methods are described and results presented of computing the two-dimensional stress field in a particular section of International Geotraverse I. The present effects of loads, caused by terrain topography and density inhomogeneities in the Earth's crust, were considered to be the sources of the stress. The corresponding values of the deviatoric stresses in the area considered are of the order of 5 MPa.

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nuaa m¶rt;ua u mam ama ¶rt; n anu a am ¶rt;a¶rt;maaI. muau anu m m uu a m a mmu u m nmm ¶rt;¶rt;m . mmmu ¶rt;uam anu ¶rt;muam uu n¶rt;a 5 a.

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Geochemical evidence for the origin of moldavites     

Vladimír Bouška  J. Benada  Z. Řanda  J. Kuncíř 《Geochimica et cosmochimica acta》1973,37(1):121-131

Forty-eight moldavites and samples of rocks from the impact crater of Ries were analyzed using non-destructive neutron activation analysis. The following elements have been determined: La, Ce, Sm, Eu, Lu, Sc, Co, Cs, Hf and Th; and Rb and Cr in two moldavites. The darker moldavites, more common in Moravia, show higher contents of trace elements than those lighter in colour, from Southern Bohemia.Terrestrial igneous rocks cannot be regarded as a suitable source material, but terrestrial sandy to silty claystones show strong similarities in major and trace element abundances, and exhibit analogous inter-element variations to moldavites. The Tertiary claystones and sandstones which probably covered the Ries area before the impact, are a possible source rocks for moldavites.  相似文献   

Contribution to the statistical dynamics of turbulent diffusion     

Jiří Horák  Reviewer J. Navrátil 《Studia Geophysica et Geodaetica》1973,17(4):362-375

Zusammenfassung Bei Studium der turbulenten Diffusion passiver Teilchen gehen wir aus statistischer Dynamik des Prozesses hervor, die auf dem zu einem unendlichen System von Gleichungen führenden Formalismus der Verteilungsfunktionen beruht. Wir behandeln in Kürze das Problem der Abgeschlossenheit, das man sowohl für die Turbulenz-Dynamik, als auch für die turbulente Diffusion übereinstimmend formulieren kann. Verschieden sind nur die Ausgangs-Bewegungsgleichungen. Wir studieren die statistische Struktur des entsprechenden Operators der Übertragung (kinetisches Modell) und suchen den Zusammenhang zwischen dem Modell des Übergangs zum Gleichgewichtszustand für die grundlegende kinetische Gleichung und die Struktur des Übergangs für die Einteilchen-Dichte, Schließlich untersuchen wir ein einfaches stochastisches Modell der in der Übertragungs-Gleichung der Diffusion enthaltenen Korrelations-Funktion.  相似文献