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| Titel |
The pattern and magnitude of rotational piezomagnetic anomalies along the dip-slip Mosha fault, Northern Tehran, Iran |
| VerfasserIn |
M. Mokhtari, S. Kiarasi |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 8, no. 6 ; Nr. 8, no. 6 (2008-11-28), S.1293-1297 |
| Datensatznummer |
250005900
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| Publikation (Nr.) |
 copernicus.org/nhess-8-1293-2008.pdf |
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| Zusammenfassung |
| Several active faults affect the Central Alborz, Northern Iran. The main
active faults in the region are the North Tehran and the Mosha faults and
their westward continuation, the Taleghan fault. Among these the Mosha fault
is the most active fault in Central Alborz. The piezomagnetic field has been
inspired by many investigations in the earthquake prediction studies and has
been reported in the literature. Several theories proposed for relating
piezomagnetic changes into magnetic signals accompanying earthquakes in the
vicinity of a fault. In this study based on an analytical solution for the
elementary piezomagnetic potentials due to an inclined rectangular fault
within a semi-infinite elastic medium a computer program has been developed.
This program has been used for evaluation of the rotational piezomagnetic
changes along the Mosha fault using different earthquakes with specific
magnitudes and at the presence of three different geomagnetic main fields.
The magnetic data acquired recently at the study area has been used during
the modeling. The first result that can be inferred from this study is that
rotational piezomagnetic anomalies are completely localized at the fault
tips. So for detection of this anomaly the magnetic instruments should be
installed at these locations. The other important element which has been
investigated was the amount of slip along the fault, which shows anomaly
intensification by increase in the amount of slip. |
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