After tracking seismic shifts, researchers say a major quake may occur off the coast of Istanbul
When a segment of a major fault line goes quiet, it can mean one of two things: The "seismic gap" may simply be inactive—the result of two tectonic plates placidly gliding past each other—or the segment may be a source of potential earthquakes, quietly building tension over decades until an inevitable seismic release.
More:After tracking seismic shifts, researchers say a major quake may occur off the coast of Istanbul
