Methodes astronomiques dans la climatologie historique (Période solaire et climatique de 400 ans)     

František Link  Zděnka Linková 《Studia Geophysica et Geodaetica》1959,3(1):43-61

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Éclairement crépusculaire en lumière jaune 5893 Å     

František Link 《Studia Geophysica et Geodaetica》1958,2(1):47-53

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An attempt to determine long-periodic variations in the drift of horizontal pendulums     

Petr Vaníček  Reviewer L. Skalský 《Studia Geophysica et Geodaetica》1971,15(3-4):416-420

Résumé On donne les résultats de l'analyse de la dérive des pendules horizontaux de la station Píbram-Bezové Hory au cours des années 1927–1938. Différemment aux résultats publiés déjà antérieurement[2], on a tout d'abord séparé par la méthode des moindres carrés la dérive linéaire et le terme à période de durée d'un an exactement et ce n'est que le reste qu'on a analysé par la méthode de l'analyse spectrale spéciale[4, 6]. On a trouvé dans les deux éléments une période de 222, respectivement 223 jours, non considérée jusqu'alors et ne pouvant pas être interprétée jusqu'à présent du point de vue physique. Les autres résultats sont en bon accord avec ceux reçus à l'origine. On peut conclure de la comparaison des phases des composantes annuelles des pendules horizontaux et du mouvement du pôle[5] que les deux événements sont du même origine.  相似文献   

Magnetism of natural pyrrhotite,haematite and ilmenite     

Vladimír Kropáček  Miroslav Krs  Reviewer F. Janák 《Studia Geophysica et Geodaetica》1971,15(2):161-172

Summary The paper deals with the magnetic properties of the natural minerals haematite, ilmenite and pyrrhotite. The natural remanent magnetization J_n, the volume susceptibility , the specific magnetization of saturation _so, the Curie temperature , the A.C. demagnetization of natural remanent magnetization, the thermal demagnetization J_n, the temperature dependence of the specific magnetization of saturation, and several other parameters were determined for the individual sets of minerals. Since natural minerals can and do contain various heterogeneous and isomorphic admixtures, their magnetic properties may change depending on the content and type of these admixtures. Therefore, all the investigations of the magnetic properties described in this paper were carried out with extensive sets of minerals, representing various Czechoslovak and world localities. A number of interesting results were obtained from the executed experiments, e.g., the different stability of the natural remanent magnetization of haematite with respect to A.C. demagnetization, the presence and type of heterogeneous inclusions in ilmenite, the phase changes connected with the -transition in natural pyrrhotites, etc. The types of distributions of the investigated values of the magnetic properties were also determined.  相似文献   

On the problem of frequency calibration of induction variometers with large air-core loops     

Josef Bochníček  Jaroslav Šubrt  Reviewer M. Hvoždara  Reviewer J. Podlešák 《Studia Geophysica et Geodaetica》1971,15(1):76-85

Zusammenfassung Es wird eine Methode für experimentelle Untersuchung der Frequenzkennlinien von Induktionsvariometern mit Aufnahmeschleifen nichttraditioneller Ausmasse beschrieben. Die Grundlage des beschriebenen Verfahrens bildet eine genaue Bestimmung jenes Teils des magnetischen Kraftflusses, der durch die Aufnahmeschleife durchgeht.  相似文献   

Night drainage winds     

Dr. Z. Petkovšek  Dr. A. Hočevar 《Meteorology and Atmospheric Physics》1971,20(4):353-360

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Transit of an electromagnetic low-frequency disturbance through the lower ionosphere     

Josef Bochníček 《Studia Geophysica et Geodaetica》1968,12(1):91-99

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Vlf experiment with the interkosmos-5 satellite     

František Jiříček  Pavel Tříska  Jaroslav Vojta  Ya. I. Likhter  V. V. Korobovkin  Reviewer V. Bumba 《Studia Geophysica et Geodaetica》1973,17(1):49-58

Summary The Interkosmos5 VLF experiment consisted of a spectrum analyser with twelve narrow-band channels and broadband measurements between0.07 and20 kHz using an analogue telemetry with a tape recorder on board. The apparatus used in the experiment is shortly described, some examples ofVLF phenomena observed are given and a review of all analogue data recorded is shown in a graphical calendar.  相似文献   

Origin of magnetic minerals and natural remanent magnetization of basaltic rocks from Lower Silesia,Poland     

J. Kruczyk  M. Kądziałko-Hofmokl  M. Jeleńska 《Pure and Applied Geophysics》1973,110(1):2031-2040

Summary Two groups of basaltic rocks with normal and reversed NRM were examined. It was found that in both groups the primary NRM, synchronous with the period of rock formation, is preserved. Relations of the primary NRM to the origin and the degree of oxidation of magnetic minerals were considered in detail.  相似文献   

Dynamic manifestations of the geomagnetic field in the Quaternary continental sediments of Czechoslovakia     

Václav Bucha  Josef Horáček  Reviewer A. Janáčková 《Studia Geophysica et Geodaetica》1973,17(4):321-336

Summary The paper brings a brief geological asessment of the sedimentational cycles, analyses the methods of collection and investigation of samples and the representativeness of the results obtained. Problems of magnetic cleaning and the types of demagnetization curves investigated are discussed. The continuous nature of the variations of the magnetic declination, inclination and remanent magnetization, determined by palaeomagnetic investigation of Quaternary sediments, is also discussed. The conclusion contains the principal facts about the dynamics of the geomagnetic field in the Quaternary and points out the possibility of applying them to the theory of the geomagnetic field, as well as to geological correlations.  相似文献