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Title: Robust bearing estimation for 3-component stations

Abstract

A robust bearing estimation process for 3-component stations has been developed and explored. The method, called SEEC for Search, Estimate, Evaluate and Correct, intelligently exploits the inherent information in the arrival at every step of the process to achieve near-optimal results. In particular the approach uses a consistent framework to define the optimal time-frequency windows on which to make estimates, to make the bearing estimates themselves, to construct metrics helpful in choosing the better estimates or admitting that the bearing is immeasurable, and finally to apply bias corrections when calibration information is available to yield a single final estimate. The algorithm was applied to a small but challenging set of events in a seismically active region. It demonstrated remarkable utility by providing better estimates and insights than previously available. Various monitoring implications are noted from these findings.

Authors:
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
752011
Report Number(s):
SAND99-1400
TRN: US0003316
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Feb 2000
Country of Publication:
United States
Language:
English
Subject:
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; 98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION; SEISMIC ARRAYS; SEISMIC EVENTS; COORDINATES; DATA ANALYSIS; PROBABILISTIC ESTIMATION; CORRECTIONS; ALGORITHMS; SEISMIC DETECTION; BEARINGS; ESTIMATION; POLARIZATION; CORECTIONS; LOCATION; ASSOCIATION

Citation Formats

CLAASSEN, JOHN P. Robust bearing estimation for 3-component stations. United States: N. p., 2000. Web. doi:10.2172/752011.
CLAASSEN, JOHN P. Robust bearing estimation for 3-component stations. United States. https://doi.org/10.2172/752011
CLAASSEN, JOHN P. 2000. "Robust bearing estimation for 3-component stations". United States. https://doi.org/10.2172/752011. https://www.osti.gov/servlets/purl/752011.
@article{osti_752011,
title = {Robust bearing estimation for 3-component stations},
author = {CLAASSEN, JOHN P},
abstractNote = {A robust bearing estimation process for 3-component stations has been developed and explored. The method, called SEEC for Search, Estimate, Evaluate and Correct, intelligently exploits the inherent information in the arrival at every step of the process to achieve near-optimal results. In particular the approach uses a consistent framework to define the optimal time-frequency windows on which to make estimates, to make the bearing estimates themselves, to construct metrics helpful in choosing the better estimates or admitting that the bearing is immeasurable, and finally to apply bias corrections when calibration information is available to yield a single final estimate. The algorithm was applied to a small but challenging set of events in a seismically active region. It demonstrated remarkable utility by providing better estimates and insights than previously available. Various monitoring implications are noted from these findings.},
doi = {10.2172/752011},
url = {https://www.osti.gov/biblio/752011}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 01 00:00:00 EST 2000},
month = {Tue Feb 01 00:00:00 EST 2000}
}