Geophysical Abstracts 152 January-March 1953

CONTENTS
Pagr
General information_____________________________________________ 1
Abstractors.____________-___-_-_-__---------------------____-_ 1
List of journals--________-_---_-----_----_-_-_-_-__-_____--____ 1
Gravity ____-________________-__-________--__--_-----_---_______._ 8
General and theoretical papers including isostasy__________________ 8
Instruments and methods of observation. ________________________ 9
Methods of analysis and interpretation.__________________________ 9
Observations of gravity and gravity surveys______________________ II
Magnetism __________________-__-___-__--_-__--______-_-_--_-___-_ 15>
Magnetic field of the earth____________________________________ 15
Magnetic properties of rocks and minerals____-_____-_-_-_-_______ 1&
Instruments and methods of observation__________________________ 20'
Methods of analysis and interpretation.__________________________ 21
Magnetic observations and surveys ______________________________ 22
Electricity. _ _ _____________________________________________________ 24
General and theoretical studies._________________________________ 24
Electrical properties of rocks and minerals._______________________ 25
Instruments and methods of observation._. _____________________ 26
Methods of analysis and interpretation.__________________________ 27
Electrical surveys and well logging_______________________________ 28-
Seismology ________________________________________________________ 29
Elastic waves________'___---_-___________-_-___---_-___-__-____ 29
Instruments and methods of observation._______________________ 30"
Methods of analysis of earthquake observations___________________ 32
Methods of analysis of seismic survey data._______________________ 34
Observations of seismic waves__-_____-__________________________ 36
Earthquake occurrences and effects-__-_____-__-__--___---__-____ 38
Seismic surveys__________ _____________________________________ 41
Microseisms- _________________________________________________ 42
Radioactivity.____ ________________________________________________ 43
Instruments and methods of observation_________________________ 43^
Radioactivity constants________________________________________ 44
Isotope studies and age determinations.__________________________ 44
Radioactivity of rocks, waters, and air ___________________________ 45
Radioactivity exploration surveys. __ ____________________________ 46
Thermoluminescence_ _--_--_-__-_-_-_________________--____________ 47
Heat-______-____-_-___-___-_.____________________________________ 48
General and theoretical studies._________________________________ 48-
Instruments and methods of observation _________________________ 5O
Observed temperatures in the crust and heat flow._________________ 5O
Volcanology _---_-___-__-_-_-______________----_______-_--___-_--_ 51
Tectonophysics_ _________________________________________________ 51
Forces in the earth and orogenesis____.__-_______________________ 51
Elastic constants and strength of rocks____-______________________ 55
Internal constitution of the earth____________________________________ 55
General geophysical exploration _____________________________________ 57
Miscellaneous patents._____________________________________________ 58
Author index____________________________________________________ 59
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