Geophysica Vol. 16, No. 2, 1980

4 articles

1.

Global Geomagnetic Secular Variation from 1956 to 1976 as Described by a Four-Dipole Model

H. Nevanlinna

2.

The Accuracy of Damping Constants Determined by Standard Calibration of an Electromagnetic Seismograph

Vladimír Tobyáš and Pekka Teikari

3.

A Theory of Variable Wind-Driven Currents with Constant Eddy Viscosity

S. Uusitalo

4.

Duration Magnitudes for Swedish Earthquakes

Rutger Wahlström