Definition
Earthquakes are caused by ruptures (faults) in solid rock with instantaneous movement, during which seismic body waves are emanated by elastic rebound. By evaluation of the seismic waves, the focus (location) of the earthquake, the spatial orientation of the fault plane, and the mode of movement can be determined. The result is called “fault-plane solution.”
Fault-Plane Solution
The orientation of planes of movement at plate boundaries or within any block of solid rock can be deduced from earthquake data. In the case of an earthquake triggered at a fault plane, the two blocks move by creating an instantaneous offset up to several meters. This results in the generation of the two types of seismic body waves. Primary (P-) waves oscillate in the longitudinal direction of propagation. They are faster than secondary (S-) waves that oscillate transversally. If all of the seismic data from a given earthquake collected around the Earth are put into a diagram, four quadrants and the...
Bibliography
Frisch, W., Meschede, M., and Blakey, R., 2011. Plate Tectonics. Continental Drift and Mountain Building. Berlin/Heidelberg: Springer. 212 pp.
Green, H. W., 1994. Solving the paradox of deep earthquakes. Scientific American, 271(3), 50–57.
Isacks, B., and Molnar, P., 1969. Mantle earthquake mechanisms and the sinking of the lithosphere. Nature, 223, 1121–1124.
Okomura, K., Yoshioka, T., and Kuscu, I., 1993. Surface faulting on the North Anatolian Fault in these two millennia. U.S. Geological Survey Open-File Report, 94–568, pp. 143–144.
Sieh, K. E., 1978. Prehistoric large earthquakes produced by slip on the San Andreas fault at Pallett Creek, California. Journal of Geophysical Research, 83, 3907–3939.
Sykes, L. R., 1967. Mechanism of earthquakes and nature of faulting on the mid-ocean ridges. Journal of Geophysical Research, 72, 2131–2153.
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Frisch, W. (2013). Fault-Plane Solutions of Earthquakes. In: Harff, J., Meschede, M., Petersen, S., Thiede, J. (eds) Encyclopedia of Marine Geosciences. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-6644-0_109-1
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