Acta Geodaetica et Geophysica Hungarica 34. (1999)

1-2. szám

CONTENTS Geodesy and gravimetry Hydrostatic tiltmeters in local geodynamical measurements — Mentes Gy ....................... 3 Algorithm for model calibration of GPS-GLONASS TEC observations Gulyaeva T L, Panjushin A N, Stepanov G N ................................................................................................................... 17 Theoretical gravity formulae and a mean gravity value — Nagy D .......................................... 23 The mean and the variance matrix of the ‘fixed’ GPS baseline — Teunissen P J G ... 33 Geomathematics Comparison of various gridding methods - - Nagy D, Franke R, Battha L, Kalmár J, Papp G, Závoti J .................................................................................................................................................. 41 A more sophisticated definition of the sample median — Steiner F, Hajagos В .............. 59 Insufficiency of asymptotic results demonstrated on statistical efficiencies of the L\ norm calculated for some types of the supermodel fp(x) — Steiner F, Hajagos В ............ 65 Two tests of “normality” — Hajagos B, Steiner F, Szűcs P ........................................................... 71 Modified versions of estimates based on least squares and minimum norm Závoti J 79 Error characteristics of MAD-s (of sample medians) in case of small samples for some parent distribution types chosen from the supermodels fp(x) and /„(x) — Steiner F, Hajagos В ........................................................................................................................................ 87 Rock physics A laboratory study of rock acoustic characteristics by parametric spectral estimation — Saad S, Herous L, Doghmane N, Lachouri A ................................................................................... 101 Seismology Geodynamic modelling of the movement along the Seiyal fault, Aswan, Egypt — Ahd El-Monem S Mohamed ................................................................................................................................... Ill Historical seismicity of Egypt — Badawy A ................................................................................................. 119 Estimation of macroseismic focal depth without using Isoseismals — Zsíros T ................. 137 Solid Earth physics Surfaces of constant gravity and geopotential models — Bursa M ............................................. 149 Miscellaneous topics On some problems to localize post-exploitation mining holes with ground-penetrating radar - Karczewski J, Tomecka-Suchon S, Ziçtek J ................................................................ 159 Temporal variation of electrical signal recorded in a standing tree — Koppán A, Szarka L, Wesztergom V .......................................................................................................................................................... 169 History Some aspects in Emil Wiechert’s scientific work — Schröder W, Treder H-J ................... 181 The Tunguska-catastrophe and events in the high atmosphere on June 30, 1908 Schröder W ................................................................................................................................................................. 187 Hans Ertel — A pioneer in geophysical sciences — Schröder W, Treder H-J ..................... 191 Johann Kiessling (1839-1905) and the investigation of optical phenomena in the atmo­sphere — Schröder W, Wiederkehr K-H ........................................................................................... 197 MAGYAR TUDOMÁNYOS AKADÉMIA könyvtára

Next