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Localisation of Earthquake Foci for EEWs: by (near) real-time P2P (Point-to-point) and Tabular Scanning - Couverture souple

Daglish, George R.

 
9786203200959: Localisation of Earthquake Foci for EEWs: by (near) real-time P2P (Point-to-point) and Tabular Scanning

Synopsis

This small volume aims to suggest and demonstrate a collection of methods whereby very rapid scans for the Hypocenter foci can take place in real-time or near real-time. These scans have been, to some extent, given in other places and are to be executed, in part, by point-to-point (P2P) ray-tracers or Tabular Scans. These ray tracers act from a set of depth-points from which the scan constructs rays to each of the active seismographs which are in possession of a P-wave or S-wave onset timing. The P2P tracers employ any of a set of 1-D (radial) Earth velocity models and use a set of possible “indicator functions” whose response shall determine an estimate of the Hypocenter Depth.

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