Signals from the Rocks

Authors: Ernst D. Schmitter

Abstract:

There is increasing evidence that earthquakes produce electromagnetic signals observable at the surface in the extremely low to very low freqency (ELF - VLF) range often in advance to the main event. These precursors are candidates for prediction purposes. Laboratory experiments con´¼ürm that material under load emits an electromagnetic signature, the detailed generation mechanisms how- ever are not well understood yet.

Keywords: Earthquakes, ELF, EM signals from material under load, signal propagation in conductors.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1058373

References:

[1] Eftaxias K., Kapiris P.,Polygiannakis J., Peratzakis A. Kopanas J., Antonopoulos G., Rigas D., Experience of short term earthquake pre- cursors with VLF-VHF electromagnetic emissions, Natural Hazards and Earth System Sciences 3: 217-228 (2003)
[2] Misra A. A. Applied Physics 16 195-199, 1977
[3] Jackson J.D., Classical Electrodynamics, John Wiley, 1962
[4] Frid V., Rabinovitch A., Bahat D., Fracture induced electromagnetic radiation, J. Phys. D: Appl. Phys. 36 (2003) 1620-1628, 2003
[5] Freund F., Charge generation and propagation in igneous rocks, J. of Geodynamics, 33 (2002) 543-570
[6] Eckmann J.P., Kamphorst S.O., Ruelle D., Recurrence Plots of Dynamical Systems, Europhysics Letters, 5, 973-977, 1987
[7] Zbilut J.P., Webber Jr. C.L. Embeddings and delays as derived from quanti´¼ücation of recurrence plots, Physics Letters A , 171, 199-203, 1992
[8] Varotsos p. A., Sarlis N.V., Skordas E.S., Long-range correlations in the electric signals that precede rupture, Phys. Rev. E 66, 011902, 2002 and Phys. Rev. E 67, 021109, 2003
[9] Tzanis, A., Vallianatos, F., A critical review of Electric Earthquake Precursors, Annali di Geo´¼üsica, 44/2, 429-460, 2001
[10] Konstantanaras, A., Varley, M.R., Vallianatos, F., Collins, G., Holi´¼üeld, P., A neuro-fuzzy approach to the reliable recognition of electric earth- quake precursors, Natural Hazards and Earth Sciences 4:641-646, 2004
[11] Molchanow O. A., Hayakawa M., On the generation mechanism of ULF seismogenic electromagnetic emissions, Physics of the earth and planetary interiors 105 (1998) 210-210, 1998
[12] Molchanow O., Kulchitsky A., Hayakawa M., Inductive seismogenic effect in relation to seismogenic ULF emission, Natural Hazards and Earth Science 1, 61-67, 2001