Electromagnetic Variation Anomalies in the Arctic Ocean (Anomalii Elektromagnitnykh Variatsiy v Severnom Ledovitom Okeane),
Abstract
It is known that, unlike the permanent terrestrial magnetic field, the variable field is distributed rather uniformly in space. This is brought about by the external distant location of the variable field sources and their relatively uniform distribution above the Earth. More or less significant gradients of the variation field should be observed only near the polar and equatorial electro-jets. This is what was thought until quite recently when the net of magnetic observatories was still quite thin. However a number of cases have become known lately where the variations differ substantially at closely located points. These differences embrace a wide frequency spectrum ranging from micropulsations and 'bays' to S sub q and D sub st variations. Such anomalies have been surveyed for Japan, Canada, Western Europe, and the western United States, as well as for East Europe and North Canada. In the Soviet Union a number of anomalies in Siberia and the Near East have veen discovered and interpreted. This report covers studies of anomalies in the Arctic Ocean.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 22, 1976
- Accession Number
- ADA032435
Entities
People
- V. S. Shneyer
Organizations
- Office of Naval Intelligence