The variational formulation of the boundary value problem of gravity potential     

Jiří Nedoma  Reviewer M. Burša  Reviewer O. Novotný 《Studia Geophysica et Geodaetica》1975,19(3):226-232

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Wave pattern and maximum amplitude of short-periodP waves at epicentral distances between 9° and 25°     

Jrří Vaněk  Carmen Sobotová  Reviewer J. Janský 《Studia Geophysica et Geodaetica》1975,19(2):134-140

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On the problem of determining the vertical gradients of gravity anomalies     

Petr Velkoborský  Reviewer M. Burša 《Studia Geophysica et Geodaetica》1974,18(3):232-237

Summary Green's theorem on harmonic functions makes it possible to determine the integral relationship between the harmonic function and its derivative with respect to the normal on a closed Lyapunov surface. The conditions of solvability are given by Fredholm's theory of integral equations. The solution for a sphere was presented by Molodenskii[3] and the general solution with the help of Molodenskii's parameter k by Ostach[4]. The present paper indicates a possibility of solving this problem with the help of a system of linear algebraic equations, a simplified modification of the Ostach-Molodenskii solution and, finally, a method, based on Eremeev's solution of the fundamental integral equation[5].  相似文献   

The effect of the coupling between galvanometers on the characteristics of the Gs-11 gravimeter     

Vladimír Tobyáš  Reviewer L. Skalský 《Studia Geophysica et Geodaetica》1974,18(4):394-404

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Note on secular variation of characteristics of external magnetic field of earth     

Milosla Kopecký 《Studia Geophysica et Geodaetica》1960,4(1):94-96

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Photographic observation of the development of a thunderstorm cloud     

Milan Koldovský 《Studia Geophysica et Geodaetica》1959,3(1):93-97

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Nous accueillons “studia geophysica et geodaetica» dans notre vie scientifique     

Akadémicien Josef Ryšavý 《Studia Geophysica et Geodaetica》1957,1(1):4-6

Sans résumé le président du Comité national tchécoslovaque de géodésie et géophysique  相似文献   

Active hydrate destabilization in Lake Baikal,Siberia?   总被引：1，自引：0，他引：1  

Marc De Batist  Jan Klerkx  Pieter Van Rensbergen  Maarten Vanneste  Jeffrey Poort  Alexander Y. Golmshtok  rei A. Kremlev  Oleg M. Khlystov  Petr Krinitsky 《地学学报》2002,14(6):436-442

ABSTRACT In this paper, we present new seismic and heat-flow data that show the base of the hydrate stability zone (BHSZ) in Lake Baikal to be locally characterized by abnormal variations in depth, with distinct regions of deeper-than-normal and regions of shallower-than-normal BHSZ. These variations are related to strong lateral variations in heat flow, and occur in close association with important rift-basin faults. Areas of shallow BHSZ are also characterized by the presence of several methane seeps and mud volcanoes at the lake floor. We infer that the seeps are the surface expression of escape pathways for overpressured fluids generated by the dissociation of pre-existing hydrates, in response to a thermal pulse caused by an upward flow of hydrothermal fluids towards the BHSZ. It thus seems that present-day hydrate dissociation in Lake Baikal is modulated by the tectonic activity in the rift rather than by – climatically controlled – changes in lake level or water temperature.  相似文献   

Chaotic behaviour of trajectories for the asteroidal resonances     

M. Šidlichovský 《Celestial Mechanics and Dynamical Astronomy》1993,56(1-2):143-152

A systematic study of the main asteroidal resonances of the third and fourth order is performed using mapping techniques. For each resonance one-parameter family of surfaces of section is presented together with a simple energy graph which helps to understand and predict the changes in the surfaces of section within the family. As the truncated Hamiltonian for the planar, elliptic, restricted three-body problem is used for the mapping, the method is expected to fail for high eccentricities. We compared, therefore, the surfaces of section with trajectories calculated by symplectic integrators of the fourth and six order employing the full Hamiltonian. We found a good agreement for small eccentricities but differences for the higher eccentricities (e 0.3).  相似文献   

Cosmologic member λ in the light of present physical conceptions     

Vladimír Skalský 《Astrophysics and Space Science》1989,161(2):263-270

In this paper, in a historical retrospect, the problem of the hypothetical cosmologic member is discussed. Under the assumption that the Universe is an ultrastable actual manifestation of a unique fundamental substance-physical vacuum, the extremality of actual properties of the Universe admits only of two values . In the de Sitter evolution phase, has an undetermined character. In the Friedmann one, =0.  相似文献