Ocean Magnetics: 1. Fundamental Survey and Estimates of Induction Phenomena
Abstract
Hydromagnetic phenomena are induced the ocean environment by motions of the electrically conducting seawater across ambient fileds. The present report is intended to survey and estimate possible effects from a fundamental theoretic standpoint. The ocean motions considered include both those of natural origin and those associated with moving ocean vehicles. The ambient magnetic field is that due to the earth, plus that due to the vehicle if it is magnetizable. These various motions and fields produce a broad multitude of ocean magnetic (OM) phenomena. The manifold of OM effects is surveyed theoretically, and from basic physical principles we derive simple numerical estimators for the effects. The potentially more significant include several pure induction types (nonpropagating) and several pseudowave types (OM induction effects propagated by mechanical waves). Detailed analyses of these OM phenomena will be presented in subsequent reports.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1977
- Accession Number
- ADA057396
Entities
People
- H. W. Ko
- J. F. Bird
Organizations
- Johns Hopkins University