Local magnetic events associated with displacement along the San Andreas fault (California)

Breiner, Sheldon; Kovach, Robert L.

doi:10.1016/0040-1951(68)90027-9

Cited by 13 publications

(2 citation statements)

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“…Piezomagnetism was described by Breiner (1963) concerning the change of magnetic properties of rocks undergoing increasing mechanical stress. Long-term measurements at the San Andreas fault show a correlation between change in the magnetic field and the occurrence of earthquakes (Breiner and Kovach 1968). The frequency however, is in the low Hz range and not registered with the instrument in our study.…”

Section: Other Sources Of Emrmentioning

confidence: 85%

Orientation and nature of active crustal stresses determined by electromagnetic measurements in the Patagonian segment of the South America Plate

Reuther¹,

Moser²

2007

Int J Earth Sci (Geol Rundsch)

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Section: Other Sources Of Emrmentioning

confidence: 85%

Orientation and nature of active crustal stresses determined by electromagnetic measurements in the Patagonian segment of the South America Plate

Reuther¹,

Moser²

2007

Int J Earth Sci (Geol Rundsch)

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“…The effect was attributed by him to anomalous secular variation or to tectonomagnetic induction. Breiner andKovach (1968), Smith et al (1978), and Johnston (1980) have looked for relations between magnetic effects and fault creep observations in other areas. It seems that although some patterns may appear (see Figure 10), there is no significant correlation LG-GD ./ between groups of deep events and magnetic changes.…”

Section: Tectonomagnetic or Seismomagnetic Effectsmentioning

confidence: 96%

Magnetic field anomalies associated with geodynamic phenomena

Rossignol¹

1982

Geophysical Surveys

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Abstract. Significant variations of the Earth's magnetic field seem to be associated with geodynamie phenomena, particularly volcanic eruptions and earthquakes. The variations have small amplitudes, generally only a few nT. These small signals are embedded into larger transient variations due to other natural or artificial causes. An original method of recovering interesting signals having amplitudes down to 1 nT, is to describe the whole variation analytically so that each component may be isolated. Several studies have shown that significant signals exist for tectonically active regions: 10-30 nT for large-scale arrays over periods of years; 5-15 nT for volcanic phenomena; 1-5 nT for earthquakes.Only a few test sites for volcanoes (New Zealand, Hawaii, Antilles) and earthquakes (essentially the San Andreas fault system) have been monitored so far.The cause of the type of magnetic variations studied here, which are associated with volcanism and rock failures, has most often been attributed to piezomagnetism. Some authors have suggested that electrokinetic effects associated with porosity-changes may also play a role.The isolated signals may, in the future, be used for hazard forecasting when the time-constants associated with the effects are known more precisely.

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Magnetism of Rocks and Volumetric Strain in Uniaxial Failure Tests

Martin

Wyss

1975

Earthquake Prediction and Rock Mechanics

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Local magnetic events associated with displacement along the San Andreas fault (California)

Cited by 13 publications

References 0 publications

Orientation and nature of active crustal stresses determined by electromagnetic measurements in the Patagonian segment of the South America Plate

Orientation and nature of active crustal stresses determined by electromagnetic measurements in the Patagonian segment of the South America Plate

Magnetic field anomalies associated with geodynamic phenomena

Magnetism of Rocks and Volumetric Strain in Uniaxial Failure Tests

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