Call number:
AWI G3-99-0310
Description / Table of Contents:
In this book there are analysed and discribed the main features of frozen earth materials (ices, snow, frozen soils and rocks of various compositions and structures) as heterogeneous multiphase formations. Many experimental data on their electric and elastic properties are presented and discussed. Particular emphasis are placed on the regularities of these properties changes as the functions of frozen material temperature, liquid phase contents, composition and dispersiveness of mineral matrices, salinity, frequency of electromagnetic fields etc. The interrelationships of electric, elastic, strength and other properties are considered and shown that the predominant effect upon this physical properties exert the liquid phase content and its spatial distribution, ice content and cryogenic structures and textures. The book covers the propagation characteristics of electromagnetic and stress waves, electroacoustic conversion and other phenomena in frozen earth materials as well es electric and acoustic techniques for study and monitoring of their freezing kinetics, phase composition, temperatures of beginning and ending of freezing, strength, cryotexture and other fields, of application. The book is a large generalization in this part of frozen earth material physics and it intend for scientists and engineers in the field of geocryology, mining, engineer-geology, geophysics, glaciology, civil engineering etc. and also useful for the students of these profiles.
Type of Medium:
Monograph available for loan
Pages:
513 S. : graph. Darst.
ISBN:
5201143628
Note:
Contents: Foreword. - Introduction. - 1. Cryogenic materials as multiphase polycristal formations. - 1.1 Gernal information. - 1.2 Spatial cryogenic structure. - 1.3 Water and solution phase transformations. - 1.4 Liquid phase in cryogenic media. - 1.5 Saline frozen earth materials particularities. - 1.6 Constiution of cryogenic formations. - 2. Electrical and mechanical relaxiation of heterogeneous media in the time variable fields. - 2.1 Founding principles. - 2.2 Heterogeneous multiphase media. - 2.3 Parameters of dynamic, electrical and mechanical properties. - 2.4 Phenomenological theory of relaxation. - 2.5 Physical model of frozen media. - 3. Electric properties. - 3.1 Physical basis. - 3.2 Conductivity and polarizability. - 3.3 Frequency dispersion in time varying electromagnetic fields. - 3.4 Temperature dependencies. - 3.5 Mineral and water composition dependencies. - 3.6 Characteristics and parameters of electric relaxation phenomena. - 3.7 Saline cryogenic media. - 3.8 Two phase ice formations. - 4. Moduli of elasticity. - 4.1 Cryogenic materials as elasto-viscous media. - 4.2 Ice formations. - 4.3 Frozen soils and rocks. - 4.4 Saline and peat soils. - 4.5 On the representiveness of dynamic and static moduli. - 5. Methods of determining electrical and elastic properties. - 5.1 Experimental preparation of frozen material samples. - 5.2 Electrical properties. - 5.3 Elastic properties. - 5.4 Electroacoustic effect. - 6. Physical basises of electrometric and seismic-acoustic techniques of cryogenic media investigations. - 6.1 Propagation characteristics of electromagnetic waves. - 6.2 Regularities of stress waves propagation. - 6.3 Interrelationships of mechanical and electrical properties. - 6.4 Electroacoustic conversion in frozen soils. - 6.5 Techniques to study of freezing kinetics and phase composition. - 6.6 Main fields of application and practical significance. - Conclusion. - Nomenclature. - Bibliography.
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In kyrill. Schr.
,
Zsfassung in engl. Spr.
Location:
AWI Reading room
Branch Library:
AWI Library
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