1

The mean field of disturbance of polar geomagnetic storms

Year:
1946
Language:
english
File:
PDF, 1.36 MB
english, 1946
2

Observations of micropulsations in the magnetic records at Tromsø

Year:
1932
Language:
english
File:
PDF, 312 KB
english, 1932
3

Vertical movements of the air in the upper atmosphere

Year:
1936
Language:
english
File:
PDF, 858 KB
english, 1936
4

Oscillations and vibrations in magnetic records at high-latitude stations

Year:
1936
Language:
english
File:
PDF, 484 KB
english, 1936
7

Scattering of radio waves from great virtual distances

Year:
1945
Language:
english
File:
PDF, 917 KB
english, 1945
8

A study of auroral arcs and draperies

Year:
1945
Language:
english
File:
PDF, 453 KB
english, 1945
9

Radio-echo observations at Tromsö during the solar eclipse on July 9, 1945

Year:
1945
Language:
english
File:
PDF, 148 KB
english, 1945
11

The auroral luminosity-curve

Year:
1946
Language:
english
File:
PDF, 859 KB
english, 1946
12

Note on methods of determining the direction of auroral arcs from a single station

Year:
1945
Language:
english
File:
PDF, 144 KB
english, 1945
13

Annual Variation of the Critical Frequencies of the E- and F2-Layers

Year:
1937
File:
PDF, 233 KB
1937
15

Further studies on the vertical movements of the air in the upper atmosphere

Year:
1937
Language:
english
File:
PDF, 826 KB
english, 1937
18

An apparatus for registration of the aurora borealis

Year:
1932
Language:
english
File:
PDF, 146 KB
english, 1932