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Previous, Current, and Future Trends in Research into Earthquake Precursors in Geofluids

“…Uyeda and coworkers [8] reported on electric and electromagnetic signals detected before earthquakes in different countries and commented on recent trends in research activities, Ismail-Zadeh and Kossobokov [9] reported on the possible use of seismic catalogues for intermediate-term earthquake forecasting, and Chadha [10] reviewed the generation mechanisms of possible precursory signals in geofluids. Current recent trends in earthquake precursors have also been summarized in special issues of scientific journals like in [11] and [12][13][14][15] among others, or in special volumes collecting contributions by various authors like in [16] and in [17]. The empirical approach to the problem of earthquake prediction is the attempt to establish phenomenological laws that have led, during historical times, many scholars and researchers to suggest specific relationships between precursors and earthquakes.…”