Relationship between the bitumen and kerogen of an Australian torbanite

A benzene-methanol extract of an Australian Permo-Carboniferous torbanite from New South Wales was analyzed by a computerized gas chromatographic-mass spectrometric system. Acidic and neutral fractions of the extract contained C₁₂_C₂₇ straight chain, saturated acids; C₁₃-C₂₉ straight chain hydrocarbons; cyclohexyl alkanes; pentacyclic triterpanes; naphthalene, anthracene, biphenyl, benzanthracene, terphenyl, and perylene, and many methyl substituted analogs of these polycyclic aromatic systems. It is concluded that nearly all of these compounds were derived from Botryococcus braunii, a major contributor to the biomass of Australian torbanite.     

Anomalous induction in the Carpathians

nuam mam uu auauaum n aumua ¶rt; a 9 n mau ¶rt; nu No V, na anam. ma uam a aa u¶rt;uu aau ¶rt; uu u mau anamau. m m u¶rt;uu u aauuaa amma aamumua aa ma. ¶rt;a a m¶rt; mau ¶rt; aumua u mm a¶rt;u n a m u mau. uamua aau ¶rt;m u mu ma, m m ¶rt;u u umu m n. maum aamumuu n nma mmuuu aauu aumau ¶rt; m ¶rt;- ¶rt;¶rt;muu mm ¶rt; nu u m¶rt; am.

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A substantial part of this paper was presented at the IAGA symposium Relations between External and Internal Magnetic Variations, XVI. IUGG General Assembly, August–September 1975, Grenoble.     

Heat flow map of Central and Eastern Europe (revised version)

Summary Revised version of the map showing the distribution of the surface heat flow on the territories of Bulgaria, Czechoslovakia, the German Democratic Republic, Hungary, Poland, Roumania and the European part of the USSR is presented and its general features are briefly discussed.     

Mathematical model of the spectral decomposition of periodic and non-periodic geophysical stationary random signals

Summary A model is discussed for the spectral decomposition of stationary periodic and non-periodic functions, suitable for studying various geophysical signals. The properties of the individual components of the random spectrum of the periodic stationary random function was shown in the geometry of Hilbert space of random quantities, and these were used to construct the periodic continuation of the random stationary function, given in a finite interval.     

Long period variations of the geomagnetic field and their spatial distribution in Europe

a 27 nu amu ama m¶rt;au nma aaua ¶rt; nu nma anum¶rt; 27-¶rt; auauu u ÿeau nu¶rt;au 13–14 u 9 ¶rt;. mam an¶rt;u nma anum¶rt; Z u H mau a n nuuuu auauuu uuP ₁ (cos ) u P ₁ /, mmm. mau mau a um auumu mau auau ¶rt; mmu mu Z/H ¶rt; a¶rt; amuu. au ¶rt; mmuuu u umu a¶rt;au muu ¶rt; ¶rt;am uau mu ¶rt;¶rt;mmu mu u. a aaua au mu Z/H ¶rt;m u uam n u m aa amu.     

On some sources of uncertainty in the Lyman-α ionization-rate calculation

Summary The effect of the uncertainty and variability in the absorption cross-section, ionization cross-section and the Lyman- line shape on the Lyman- ionization-rate calculation is studied. The effect of the variability of the Lyman- line shape seems to be negligible. The effect of the ionization cross-section is rather small. The greatest and very significant effect, particularly at lower altitudes, is due to the discrepancy in the absorption cross-section data. Some ionospheric and atmospheric consequences are briefly discussed.     

The dependence of the ionospheric absorption at 2775 kHz on the intensity of ionizing radiation—Ionospheric implications

Summary The results of comparisons of experimental data on the A3 2775 kHz absorption, X-ray (1–8 Å) flux and Lyman- radiation are compared with model data on ionization-rate and radio-wave absorption height profiles. The Lyman- radiation is found to dominate even in the upper D-region ionization (except flare conditions). A significant increase of usually used nitric oxide concentrations from rocket airglow measurements is required for achieving the best agreement between experimental and model data.     

On the computation of the gravitational effect of three-dimensional density models of the earth's crust

Summary This paper deals with the methods of computing three-dimensional density models of the Earth's crust. Formulae for the numerical computation are given and the individual procedures are evaluated from a numerical point of view.     

Changes of electric conductivity in the neighbourhood of the curie temperature of basalts

Summary In investigating the electric conductivity of rocks as a function of the temperature it was found that rocks containing ferrimagnetic minerals display a change in the slope of the functionlg =f(1/T) in the neighbourhood of the Curie temperature . In order to explain these changes the curveslg =f(1/T) and the Curie temperatures , obtained from the temperature dependence of the saturated magnetization J_s=f(T), were compared. Eight samples of basalts, 2 samples of haematite and magnetite were used to demonstrate the relation between and the changes in the pattern of the electric conductivity, caused by the variations of the exchangeable energy of ferrimagnetic minerals.     

ELF and VLF electric field measurements with the Interkosmos 10 satellite

Summary The ELF-VLF experiment onboard the Interkosmos 10 satellite consisted mainly of a broadband receiver covering the frequency range from 20 Hz to 22 kHz. The signal level in this broad band has also been measured, as well as the level in two narrow bands with centre frequencies of 720 Hz and 4 kHz. The electric component of the ELF-VLF fields has been measured by using an electric dipole antenna, 2.35 m in length. The purpose of this paper is to characterise the data obtained by the broadband RTT transmissions at the Panská Ves station during the seven-months active period of the satellite. The spectral analysis of all broad-band ELF-VLF recordings has been used. Examples of some typical phenomena, most frequently observed at different invariant latitudes are given.