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Více informací o knize Long Term Electromagnetic Monitoring at Parkfield CA

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• Anotace
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Anotace knihy

Electric and magnetic fields in the ULF band§were monitored at two sites adjacent to the San§Andreas Fault near Parkfield and§Hollister, California. A data window enclosing the§September 28, 2004 M6 Parkfield earthquake, was§analyzed to determine if anomalous electric or§magnetic fields, or changes in ground conductivity,§occurred before the earthquake. Three§main statistical techniques were employed to separate§local anomalous electrical or magnetic fields from§the dominant coherent natural fields: transfer§function and residual field estimates between§components at each site; principal component§analysis; and canonical coherence analysis were§employed to distinguish anomalous fields which are§spatially broad from those which occur at a§single site only, and to distinguish§signals present in both the electric and§magnetic fields from those which are present in only§one field type. Standard remote reference apparent§resistivity estimates were generated daily at§Parkfield. In all cases, high levels of sensitivity§to subtle electromagnetic effects were demonstrated,§but no effects which can be reasonably characterized§as precursors to the Parkfield earthquake were found.

Parametry knihy

Zařazení knihy Knihy v angličtině Earth sciences, geography, environment, planning Earth sciences

• Plný název: Long Term Electromagnetic Monitoring at Parkfield CA
• Autor: Karl Kappler
• Jazyk: Angličtina
• Vazba: Brožovaná
• Počet stran: 248
• EAN: 9783639146578
• ISBN: 3639146573
• ID: 06823236
• Nakladatelství: VDM Verlag
• Hmotnost: 388 g
• Rozměry: 153 × 229 × 15 mm
• Datum vydání: 14. June 2009

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