skip to main content

DOE PAGESDOE PAGES

This content will become publicly available on October 1, 2016

Title: A new method for producing automated seismic bulletins: Probabilistic event detection, association, and location

Given a set of observations within a specified time window, a fitness value is calculated at each grid node by summing station-specific conditional fitness values. Assuming each observation was generated by a refracted P wave, these values are proportional to the conditional probabilities that each observation was generated by a seismic event at the grid node. The node with highest fitness value is accepted as a hypothetical event location, subject to some minimal fitness value, and all arrivals within a longer time window consistent with that event are associated with it. During the association step, a variety of different phases are considered. In addition, once associated with an event, an arrival is removed from further consideration. While unassociated arrivals remain, the search for other events is repeated until none are identified.
Authors:
 [1] ;  [1] ;  [1] ;  [2]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. ENSCO, Inc., Falls Church, VA (United States)
Publication Date:
OSTI Identifier:
1236239
Report Number(s):
SAND--2015-2715J
Journal ID: ISSN 0037-1106; 582023
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Bulletin of the Seismological Society of America
Additional Journal Information:
Journal Volume: 105; Journal Issue: 5; Journal ID: ISSN 0037-1106
Publisher:
Seismological Society of America
Research Org:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES