Ground Truth 2
Ground Truth 2 :
A jargon coming from the nuclear-test detection seismology, referring to information about the location of a seismic event that is derived from information not usually available to an analyst studying the event with a typical monitoring network. The ground truth can come from satellite observations, or from fault traces that break out at the Earth's surface, or from operation of a local network, drilling site or similar. Ground truth (GT) locations are sometimes associated with a number, e.g., GT5, meaning a location believed to be accurate to within 5 km, obtained from ground truth. Today, ground truth events are essential for testing seismic source location algorithms and to validate seismic velocity models. See: IS 8.5, 8.6 and 11.1 in this Manual and Richards (2002)
