Geomagnetic and Observatory and Survey Practice

Absolute Measurement of D by Means of a Proton Magnetometer.- Portable Magnetometer Theodolite with Fluxgate Sensor for Earth's Magnetic Field Component Measurements.- Acquisition and Primary Processing of Geomagnetic Pulsations in Real Time Operation by Microcomputer.- The Recording of Pc1 Geomagnetic Pulsations Using a Microcomputer Preprocessing System.- Magnetic Mapping of Slovakia for the Epoch 1980.5.- Geomagnetic Absolute Measurements with a Nuclear Resonance Theodolite at the Adolf Schmidt Observatory in Niemegk.- Aeromagnetic Surveys in the Seas Around Japan in 1980.- An Automatic Audio-Magnetotelluric Equipment, Controlled by Microprocessor, for the Telesurveillance of the Volcano Momotombo (Nicaragua).- The Eiscat-Magnetometer Cross.- An Intelligent Digital Magnetic Recording System (Dimars).- On the Reduction of Time Variations for Geomagnetic Repeat Station Measurements.- One Year Experience with the CMVS 2 Magnetic Variation Station.- Automatic Digital Recording of Geomagnetic Elements by Means of a Proton Precession Magnetometer.- Comparison of Standard and Digital Observation at the Geomagnetic Adolf Schmidt Observatory Niemegk.- Improved Kakioka Automatic Standard Magnetometer (KASMMER).- Long-Term Stability of a Torque-Balance Variometer with Photoelectric Converters in Observatory Practice.- Experience of Geomagnetic Field Recording with a Fluxgate Magnetometer Having a Bridge Sensor.- The Digital Recording System Operated at the U.K. Magnetic Observatories.- Geomagnetic Measurements Made on the Moving Ice Shelf at Halley, Antartica.- Proposed Major Format Change to Geomagnetic Activity Reports and Forecasts Produced by the SESC, Boulder, Colorado, U.S.A..- About Digital Alternative to the Kp-Index.- Derivation of K-Indices Using Magnetograms Constructued from Digital Data.- The Generation of K Indices from Digitally Recorded Magnetic Data.- Announcement.