The value of auxiliary stations and the need for network calibration

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To address the question of the value of auxiliary stations placed before the GSE by the Ad Hoc Committee on Nuclear Test Ban, we examined the published location error estimates given by both the NEIS and the IDC. The results of our analysis demonstrate the well-known principle that the uncertainty in the location for a given event decreases as the number of defining phases (or stations) increases and as the azimuthal coverage increases. More importantly, however, the results also show that the location uncertainty dramatically decreases as the distance to the nearest station decreases. We also show that the empirically ... continued below

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9 p.

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Denny, M. February 1, 1996.

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Description

To address the question of the value of auxiliary stations placed before the GSE by the Ad Hoc Committee on Nuclear Test Ban, we examined the published location error estimates given by both the NEIS and the IDC. The results of our analysis demonstrate the well-known principle that the uncertainty in the location for a given event decreases as the number of defining phases (or stations) increases and as the azimuthal coverage increases. More importantly, however, the results also show that the location uncertainty dramatically decreases as the distance to the nearest station decreases. We also show that the empirically observed rate of overlap of corresponding IDC and NEIS error ellipses is inconsistent with expectation as determined by statistically modeling the performance of each. To overcome this shortcoming the IMS must be calibrated.

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9 p.

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OSTI as DE96008485

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  • Group of scientific experts (GSE) working group, Geneva (Switzerland), 12-23 Feb 1996

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  • Other: DE96008485
  • Report No.: UCRL-JC--123260
  • Report No.: CONF-960283--1
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 216254
  • Archival Resource Key: ark:/67531/metadc667585

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  • February 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Feb. 18, 2016, 11:15 a.m.

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Denny, M. The value of auxiliary stations and the need for network calibration, article, February 1, 1996; California. (digital.library.unt.edu/ark:/67531/metadc667585/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.