Acta Geodaetica, Geophysica et Montanistica Hungarica 20. (1985)

CONTENTS The presumable connection between the internal structure of the Earth and geodynamics — Barla Gy................................................................................................................................................... 3 Remarks on seismismicity estimations in Hungary — Bisztricsány E.............................................. 7 Origin and dynamics of Earth's core — Savié P and Teleki G.......................................................... 13 Some properties of the Earth’s core looked upon on the basis of investigations of the force fields of the Earth — Barla Gy................................................................................................................. 29 New points of view for determining the parameters of the reference ellipsoid of the Earth — Hajósi A 61 Geophysical aspects in the selection of a geodynamic test area in Transdanubia (Western Hungary). Contribution to the International Lithosphere Programme — Adam A.............................. 71 Measurement of the plasma parameters in the ionosphere by night with retarding potenciál analyzers on board of the geophysical rocket Vertical-10 — Bencze P, Kovács K. Szemerey /, Afonin V V, Bezrukih V V........................................................................................................................... 81 Elastodynamics expressed in terms of Maxwell’s theory of electrodynamics, cylindrical wave propagation and elastic wave propagation in inhomogeneous media — Förtsch О and Koch E 85 Connection between the interplanetary medium and pulsations of the geomagnetic field with periods \ bOOs —Holló L....................................................................................................................... 127 Telluric and magnetotelluric information about the geological structure of Transdanubia — Nemesi L, Hoboi J, Varga G..................................................................................................................... 135 Introduction to the series “Conducting crustal anomalies in geothermally active areas” — Adám A, Fournier H, Verő J....................................................................................................................... 151 Magnetotelluric results in North-East Iceland — Electrical conductivity, temperature, crust- and mantle structure — Beblo M, Björnsson A ............................................................................... 153 The hot dome of Taco Ralo, in the NW of Argentine — Vatin-Perignon N, Gomposiello C. Mamani M, Maidana A, Keller M, Gasco J C. Fournier H, Febrer J.................................................. 159 Magnetotelluric exploration in the Meager Mountain geothermal area, Canada — Flores C, Kurtz R D, DeLaurier J ............................................................................................................................. 165 Electric conductivity increases in the Earth’s curst in Transdanubia (W-Hungary) — Adam A . . 173 Deep electrical conductivity in Eastern Sibiria — Shilovsky A P...................................................... 183 Professor Antal Tárczy-Hornoch 85 years — Somogyi J..................................................................... 187 Professor György Barta 70 years—Meskó A ..................................................................................... 189 Book reviews Geochemistry of Sedimentary Ore Deposits, Maynard J В — Kisházi P........................................ 191 Terrigenous Clastic Depositional Systems, Galloway W E, Hobday D К — Polcz I.................... 191 Dissolved loads of rivers and surface water quantity/quality relationships — Fehér J.................. 192 Hydrology of humid tropical regions, Keller R ed. — Bálim G........................................................ 194

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