Acta Geodaetica et Geophysica Hungarica 31. (1996)

1-2. szám

315714 CONTENTS Editorial — Verő J .................................................................................................................................. 3 Robust estimation using the Cauchy probability density— Battha L, Somogyi J ......... 5 Weight-functions in robust regression— Somogyi J, Závoti J ............................................... 11 Connection of height systems of Hungary and Croatia — Klak S, Feil L, Rozic N .... 25 Real-time integrity monitoring of dual-frequency GPS observations from a single receiver — de Jong CD ................................................................................................................................ 37 Truncation effects in using spherical harmonic expansions for forward local gravity field modelling — Papp G, Wang Z T .............................................................................................. 47 Ground tilt induced by pumping — Preliminary results from the Nagycenk test site, Hungary — Kumpel H-J, Varga P, Lehmann K, Mentes Gy ....................................... 67 Some calibration of the Applied Geomechanics Inc. borehole tiltmeter Model 722 — Mentes Gy, Lehmann K, Varga P, Kumpel H-J ................................................................. 79 Earthquakes and assessment of seismic risk — Mesko A ......................................................... 91 Seismic hazard assessment for Csallóköz region — Zsíros T ................................................... 107 Macroseismic focal depth and intensity attenuation in the Carpathian region— Zsíros T 115 Estimation of velocity perturbations using amplitude and phase fluctuations for earthquakes recorded at Gauribidanur Seismic Array in southern India — Jay ant N Tripathi, Avaih Ram .................................................................................................. 127 Shear wave velocity structure of Northern and North-Eastern Ethiopia — Kebede F, Vuan A, Mammo T, Costa G, Panza G F ........................................................................... 145 Construction of velocity relations in Abu Madi and Rudeis Formations in some oil fields, Egypt — Adel A A Othman, Esam A Abd El-Gawad ..................................................... 161 Regional time and magnitude predictable seismicity model for North-East India and vicinity — Shanker D, Sing V P ................................................................................................ 181 Regional magnetotelluric (MT) anisotropy in the Pannonian Basin (Hungary) — Ádám A .............................................................................................................................................. 191 The structure of the upper crust in the South Portuguese Zone from magnetotelluric studies — Preliminary results— de Almeida E P, Santos FA, Mendes-Victor L A 217 First results from four deep MT soundings along a west-east profile of 40 km long at 35°S lat. and 70°W long, in the Andean chain, Argentina, showing a very high conductive crust — Fournier H G, Mamani M J, Munoz M, Maidana A N, Rokiliansky I, Borzotta E, Castiglione B, Venencia J ................................................................................. 231 Plasmaspheric parameters derived from whistler observations and their relation to iono­spheric absorption and geomagnetic pulsations — Mirez F, Bencze P, Verő J ... 243 Are shells of field line resonance of finite thickness or infinitely thin? — Verő J ........... 257 To the history of the birth of solar-terrestrial physics—Schröder W ............................... 265 A note on the suggested variability of the length of the solar cycle during recent centuries and some consequences—Schröder W, Treder H-J ......................................................... 271 In memóriám Prof. em. Dr. h. c. Dr. István Hazay (1901-1995) — Bíró P ..................... 275 Book reviews Bibliográfia Geologicá §i Geofizicá a Republicii Socialiste Románia, Vols VII and VIII (1976-1980), Peltz M, Dinu L — Ádám A ........................................................................... 279 Interdivisional Commission on History of the IAGA and History Commission of the German Geophysical Society, Schröder W, Colacino M — Wesztergom I ................. 279 MAGYAR TUDOMÁNYOS AKADÉMIA KÖNYVTÁRA

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