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CONTENTS

T. Chojnicki - Calculs des marées terrestres théoriques et leur précision, ...3
T. Chojnicki - Détermination des paramètres de marée par la compensation des observations au moyen de la méthode de moindres carrés, ...43
J. Orzechowski - Ensemble des méthodes de transformation des données de marée, fondées sur le principe de moindres carrés, ...81
  - Programme de calcul des marées théoriques, ...112
  - Programme de compensation des observations de marrée, en basant sur le principe de moindres carrés, ...131
  - Programme d'elimination de l'erreur accidentelle de la dérive, ...156
  - Programme de la sommation (ou soustraction) des suites des nombres réels, ...163
T. Chojnicki - Détermination de la courbe théorique de la marche de marée dans le temps, ...167
  - Détermination des ordonnées et du graphique de la courbe des marées théoriques, ...171

CONTENTS

1. Introduction, ...3
2. Detection and recording methods of Earth's electromagnetic field variations, ...6
  2.1. Torque balance magnetometers, ...6
  2.2. Induction coil magnetometers, ...9
  2.3. Proton and optical pumping magnetometers, ...10
  2.4. Flux gate magnetometers, ...10
  2.5. Recording methods of electromagnetic field variations and short review of typical variation stations, ...11
3. Statistical methods of Earth electromagnetic field variation treatment, ...12
  3.1. Statistical pattern of Earth's magnetic field, ...13
  3.2. Continuous and discrete Fourier transform, ...14
  3.3. Methods of magnetotelluric analyses, ...17
    3.3.1. Least square method, ...19
    3.3.2. Methods based on calculation of power spectra, ...21
  3.4. Simplifications used in analyses of magnetotelluric variations, ...34
4. Models, ...35
  4.1. Formulating of the problem of plane wave scattering on two- and one-dimensional models, ...36
  4.2. Linear relations between electromagnetic field components, ...39
  4.3. One-dimensional models, ...44
  4.4. Two-dimensional models, ...51
    4.4.1. Two-dimensional models as generalisation of an one-dimensional model, ...51
    4.4.2. Analytical solutions for two-dimensional models, ...56
    4.4.3. Finite difference method for numerical solutions of two-dimensional models, ...58
    4.4.4. Method of integral equations and their numerical solutions for a two-dimensional model, ...66
4.5. Some general regularities of models, ...72
    4.5.1. Damping of electromagnetic waves in a conductive medium, ...72
    4.5.2. Anisotropy and horizontal inhomogeneities, ...75
    4.5.3. Equivalency principle, ...76
5. Interpretation of magnetotelluric and geomagnetic soundings, ...78
  5.1. Interpretation purposes, ...78
  5.2. Model selection principles and comparison of experimental and model data, ...79
  5.3. Methods of fitting experimental data, ...80
6. Empirical curves of deep magnetotelluric soundings, ...81
  6.1. List of sounding curves, ...81
  6.2. Interpretation of experimental curves by simplified models and its limitation, ...104
  6.3. Magnetotelluric soundings in regions of simple conductivity distribution, ...106
7. Geomagnetic soundings, ...112
  7.1. Listing of measurement results of geomagnetic induction vectors, ...113
  7.2. Interpretation of geomagnetic vectors surface distribution, ...115
8. Conclusions and prospects of further research activities, ...120
References, ...123

CONTENTS

Introduction, Wstęp (S. Warzecha), ...3
Champ électrique atmosphérique, Natężenie pola elektrycznego, ...16
Conductibilité d'air, Przewodnictwo powietrza, ...40
Nombre de noyaux de condensation d'air, Ilość jąder kondensacji, ...64
Les elements météorologiques, Elementy meteorologiczne, ...70

CONTENTS

Introduction, ...3
Constantes des séismographes, ...4
Résultats des enregistrements des tremblements de terre distants, ...17
Résultats des enregistrements des secousses souterraines plus fortes en Haute Silésie, ...147

CONTENTS

J. Pagaczewski - Catalogue of Earthquakes in Poland in 1000–1970, ...3
D. Draber - Seismicity of Upper Silesia in 1961–1966, ...37