Subtraction of the telluric inductive component from van measurements

Detection of Weak Seismo-Electric Signals Upon the Recordings of the Electrotelluric Field by Means of Neuro-Fuzzy Technology

“…Electric earthquake precursors appear as extrinsic electric potential anomalies on the recordings of the electric field and are not an original part of the electric field of the Earth [5], [8], and they possibly occur prior to forthcoming seismic events. The second stage of the proposed method presents a second neuro-fuzzy model trained to forecast the recorded electric field variations during time periods of no significant seismic activity.…”

“…sources of "noise" [6]. Electric earthquake precursors' recovery has long puzzled the scientific community, but very few approaches have shown promising results [8]- [10]. The method of "the subtraction of the telluric inductive component" [8] developed in the early 1990s has the disadvantage of the assumption that the existence of preseismic magnetic fields does not influence the estimated induced electrical components.…”

“…Electric earthquake precursors' recovery has long puzzled the scientific community, but very few approaches have shown promising results [8]- [10]. The method of "the subtraction of the telluric inductive component" [8] developed in the early 1990s has the disadvantage of the assumption that the existence of preseismic magnetic fields does not influence the estimated induced electrical components. In an effort to avoid the use of the impedance tensor, a method incorporating neural networks has been developed [9], where the neural network is trained to predict the Earth's telluric field variations.…”

Hybrid Adaptive Filter development for the minimisation of transient fluctuations superimposed on electrotelluric field recordings mainly by magnetic storms

“…The recovery of EEP signals has long puzzled the scientific community but very few approaches have shown promising results (Hadjioannou and Vallianatos, 1993;Rovithakis and Vallianatos, 2000;Konstantaras et al, 2006b). The method of "the subtraction of the telluric inductive component from electric field recordings" (Hadjioannou and Vallianatos, 1993) developed in the early 1990s has the disadvantage of the assumption that the existence of preseismic magnetic fields does not influence the estimated induced electrical components.…”

“…The method of "the subtraction of the telluric inductive component from electric field recordings" (Hadjioannou and Vallianatos, 1993) developed in the early 1990s has the disadvantage of the assumption that the existence of preseismic magnetic fields does not influence the estimated induced electrical components. In an effort to ignore the impedance tensor, a method incorporating neural networks has been developed (Rovithakis and Vallianatos, 2000), where the neural network is trained to predict the Earth's electric field.…”