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| HAL: hal-00299160, version 1 |
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| Natural Hazards and Earth System Science 4, 4 (2004) 513-517 |
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| A direction finding technique for the ULF electromagnetic source |
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| V. V. Surkov 1O. A. Molchanov 2 |
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| (2004-09-20) |
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| A technique of direction finding is proposed, which can be applied to the magnetic-dipole type source located in the conductive ground. To distinguish a weak ULF source signal from the natural noise a network of multicomponent magnetometers is supposed to be used. The data obtained by the ground-based stations is processed in such a way that a set of partial derivatives of the magnetic perturbations due to the source are found. Comparing these derivatives with theoretical formulae makes it possible, in principle, to find the ULF source parameters such as the distance and amplitude. Averaging the data and a special procedure are proposed in order to exclude random fluctuations in the magnetic moment orientation and to avoid hydrogeological and other local factors. |
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| 1: | Moscow Engineering Physics Institute |
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Moscow Engineering Physics Institute |
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| 2: | Institute of Physics of the Earth |
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Institute of Physics of the Earth |
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| 3: | The University of Electro-Communications |
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The University of Electro-Communications |
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| Subject | : | Sciences of the Universe/Continental interfaces, environment Sciences of the Universe/Ocean, Atmosphere Sciences of the Universe/Earth Sciences |
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| Attached file list to this document: | |||||
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| hal-00299160, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00299160/en/ | |
| oai:hal.archives-ouvertes.fr:hal-00299160 | |
| From: Publication EGU | |
| Submitted on: Monday, 20 September 2004 08:00:00 | |
| Updated on: Thursday, 17 July 2008 10:07:25 | |
