A survey of published scientific literature was undertaken to identify and catalog observed
earthquake precursors. The earthquake precursors selected for analysis included electric …

More than 100 publications reporting radon anomalies to precede earthquakes were
evaluated. A clear apparent negative correlation between the number of reported anomalies …

Structural complexity along faults (eg, relay zones, fault intersections and jogs) exert strong
controls on fluid flow, yet few attempts have been made to quantify and visualise such …

Based on the helium and carbon dioxide concentrations of the soil gases, at least three
components are required to explain the observed variations. In addition to the atmospheric …

Physical and chemical properties of warm and hot spring waters as well as soil radon
concentrations were measured continuously during a 3‐year period in the Marmara region; …

Abstract The 7.8 Mw earthquake in Ecuador during spring of 2016 was an unprecedented
opportunity to collect data on two independent seismic precursors. The first precursor was …

The study area is close to the boundary of three tectonic plates (Anatolian, Arabian, and
African plates) and is characterized by important tectonic lineaments, which consist mainly of …

On the 16th of April 2016, a Mw 7.8 earthquake with a minor tsunami impacted coastal
Ecuador, being the most devastating seismic event registered in northern South America in …

1Brunel University, Department of Engineering and Design, Kingston Lane, Uxbridge,
Middlesex UB8 3PH, London, UK 2TEI of Piraeus, Department of Electronic Computer …

We review changes in groundwater chemistry as precursory signs for earthquakes. In
particular, we discuss pH, total dissolved solids (TDS), electrical conductivity, and dissolved …