DETERMINATION OF THE EXTERNAL GEOMAGNETIC FIELD FROM INTENSITY MEASUREMENTS

被引：13
|
作者：
Backus, George E. [1 ]
机构：
[1] Univ Calif San Diego, Scripps Inst Oceanog, Inst Geophys & Planetary Phys, San Diego, CA 92037 USA
来源：
GEOPHYSICAL RESEARCH LETTERS | 1974年 / 1卷 / 01期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1029/GL001i001p00021
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Suppose a closed, bounded region M contains all the sources (currents and magnets) of the geomagnetic field B, and M', the rest of space, is connected(any two points in M' can be joined by a smooth curve). Suppose that the total intensity of B is known in some open region contained entirely inside; M'. Then the vector field B is uniquely determined up to sign in all of M'. The result is less trivial it seems, being false in two dimensions. Since the method of proof involves analytic continuation, computations based on it will probably be numerically unstable.
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页数：5
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