| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
SCIENCE APPLICATIONS INTERNATIONAL CORPORATION, 10210 CAMPUS POINT DRIVE, SAN DIEGO, CALIFORNIA 92121
Abstract
An automated procedure for locating regional seismic events with a network including arrays and single element seismometers is described. The method incorporates backazimuth estimates, arrival-time data, and associated uncertainties into a least-squares-inverse location algorithm. The formulation is essentially that of Jordan and Sverdrup extended to incorporate azimuth data. This technique allows the use of both a priori and a posteriori information about data uncertainties to compute confidence ellipsoids for location estimates. This is important for obtaining realistic confidence ellipsoids for solutions based on few data. It also permits a refinement of the confidence ellipsoid calculations as experience accumulates for events in a particular area. Small arrays like NORESS in Norway provide accurate estimates for the backazimuth of regional phases. These azimuth data provide a strong constraint on the location of events detected by a small number of stations. The strength of the constraint depends on the geometry, and in some situations azimuth data are as important as arrival-time data. Synthetic examples illustrating this are given for a network including two arrays. Actual data from the NORESS array in southern Norway and the FINESA array near Helsinki, Finland, are presented to demonstrate the use of the location technique. Most of the events studied are mine blasts for which there are highly accurate, independent locations. Comparing one-array and two-array locations and their confidence ellipses with these independent locations provides a preliminary validation of our estimates of the (signal-dependent) a priori arrival-time and azimuth variances, and demonstrates the effectiveness of our location procedure for a sparse network of regional arrays.
This article has been cited by other articles:
|
|
 |
|
  M. Kristekova, P. Moczo, P. Labak, A. Cipciar, L. Fojtikova, J. Madaras, and J. Kristek Time-Frequency Analysis of Explosions in the Ammunition Factory in Novaky, Slovakia Bulletin of the Seismological Society of America, October 1, 2008; 98(5): 2507 - 2516. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 A. A. Velasco, V. L. Gee, C. Rowe, D. Grujic, L. S. Hollister, D. Hernandez, K. C. Miller, T. Tobgay, M. Fort, and S. Harder Using Small, Temporary Seismic Networks for Investigating Tectonic Deformation: Brittle Deformation and Evidence for Strike-Slip Faulting in Bhutan Seismological Research Letters, July 1, 2007; 78(4): 446 - 453. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. J. Arrowsmith, M. A. H. Hedlin, M. D. Arrowsmith, and B. W. Stump Identification of Delay-Fired Mining Explosions Using Seismic Arrays: Application to the PDAR Array in Wyoming, USA Bulletin of the Seismological Society of America, June 1, 2007; 97(3): 989 - 1001. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
F. Waldhauser and P. G. Richards Reference Events for Regional Seismic Phases at IMS Stations in China Bulletin of the Seismological Society of America, December 1, 2004; 94(6): 2265 - 2279. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Validation of Regional and Teleseismic Travel-Time Models by Relocating Ground-Truth Events Bulletin of the Seismological Society of America, June 1, 2004; 94(3): 897 - 919.
|
|
|
|
 |
|
 Precambrian lithospheric controls on the development of the East African rift system Geology, August 1, 2002; 30(8): 755 - 758.
|
|
|
|
|
|
Path-Dependent Regional Phase Travel-Time Corrections for the International Monitoring System in North America Bulletin of the Seismological Society of America, December 1, 2001; 91(6): 1831 - 1850.
|
|
|
|
|
|
Improving Sparse Network Seismic Location with Bayesian Kriging and Teleseismically Constrained Calibration Events Bulletin of the Seismological Society of America, February 1, 2000; 90(1): 199 - 211.
|
|
|
|
|
|
I. Bondar, R. G. North, and G. Beall Teleseismic slowness-azimuth station corrections for the International Monitoring System Seismic Network Bulletin of the Seismological Society of America, August 1, 1999; 89(4): 989 - 1003. [Abstract] [PDF]
|
|
|
|
|
|
C. A. Langston, R. Brazier, A. A. Nyblade, and T. J. Owens Local magnitude scale and seismicity rate for Tanzania, East Africa Bulletin of the Seismological Society of America, June 1, 1998; 88(3): 712 - 721. [Abstract] [PDF]
|
|
|
|
|
|
K. Koch and U. Kradolfer Investigation of azimuth residuals observed at stations of the GSETT-3 Alpha network Bulletin of the Seismological Society of America, December 1, 1997; 87(6): 1576 - 1597. [Abstract] [PDF]
|
|
|
|
|
|
L. K. Bear and G. L. Pavlis Estimation of slowness vectors and their uncertainties using multi-wavelet seismic array processing Bulletin of the Seismological Society of America, June 1, 1997; 87(3): 755 - 769. [Abstract] [PDF]
|
|
|
|
|
|
T. C. BACHE, S. R. BRATT, H. J. SWANGER, G. W. BEALL, and F. K. DASHIELL Knowledge-based interpretation of seismic data in the Intelligent Monitoring System Bulletin of the Seismological Society of America, October 1, 1993; 83(5): 1507 - 1526. [Abstract] [PDF]
|
|
|
|
|
|
D. B. CARR Azimuth estimation capabilities of the ARCESS regional seismic array Bulletin of the Seismological Society of America, August 1, 1993; 83(4): 1213 - 1231. [Abstract] [PDF]
|
|
|
|
|
|
B. O. RUUD, C. D. LINDHOLM, and E. S. HUSEBYE An exercise in automating seismic record analysis and network bulletin production Bulletin of the Seismological Society of America, June 1, 1993; 83(3): 660 - 679. [Abstract] [PDF]
|
|
|
|
|
|
H. R. QUIN and C. H. THURBER Seismic velocity structure and event relocation in Kazakhstan from secondary P phases Bulletin of the Seismological Society of America, December 1, 1992; 82(6): 2494 - 2510. [Abstract] [PDF]
|
|
|
|
|
|
M. TARVAINEN Automatic seismogram analysis: Statistical phase picking and locating methods using one-station three-component data Bulletin of the Seismological Society of America, April 1, 1992; 82(2): 860 - 869. [Abstract] [PDF]
|
|
|
|
|
|
F. RIVIERE-BARBIER, A. SUTEAU-HENSON, V. Z. RYABOY, and J. A. CARTER Analysis of three-component data from IRIS/IDA stations in the USSR Bulletin of the Seismological Society of America, February 1, 1992; 82(1): 192 - 220. [Abstract] [PDF]
|
|
|
|
|
|
B. O. RUUD and E. S. HUSEBYE A new three-component detector and automatic single-station bulletin production Bulletin of the Seismological Society of America, February 1, 1992; 82(1): 221 - 237. [Abstract] [PDF]
|
|
|
|
|
|
J. HAVSKOV, L. B. KVAMME, R. A. HANSEN, H. BUNGUM, and C. D. LINDHOLM The northern Norway seismic network: Design, operation, and results Bulletin of the Seismological Society of America, February 1, 1992; 82(1): 481 - 496. [Abstract] [PDF]
|
|
|
|
|
|
M. C. WALCK and E. P. CHAEL Optimal backazimuth estimation for three-component recordings of regional seismic events Bulletin of the Seismological Society of America, April 1, 1991; 81(2): 643 - 666. [Abstract] [PDF]
|
|
|
|
|
|
S. MYKKELTVEIT, F. RINGDAL, T. Kvaerna, and R. W. ALEWINE Application of regional arrays in seismic verification research Bulletin of the Seismological Society of America, December 1, 1990; 80(6B): 1777 - 1800. [Abstract] [PDF]
|
|
|
|
|
|
M. USKI Event detection and location performance of the FINESA array in Finland Bulletin of the Seismological Society of America, December 1, 1990; 80(6B): 1818 - 1832. [Abstract] [PDF]
|
|
|
|
|
|
T. C. BACHE, S. R. BRATT, J. WANG, R. M. FUNG, C. KOBRYN, and J. W. GIVEN The Intelligent Monitoring System Bulletin of the Seismological Society of America, December 1, 1990; 80(6B): 1833 - 1851. [Abstract] [PDF]
|
|
|
|
|
|
S. R. BRATT, H. J. SWANGER, R. J. STEAD, F. RYALL, and T. C. BACHE Initial results from the Intelligent Monitoring System Bulletin of the Seismological Society of America, December 1, 1990; 80(6B): 1852 - 1873. [Abstract] [PDF]
|
|
|
|
|
|
K. R. ANDERSON Programming as a geophysical inverse problem Bulletin of the Seismological Society of America, December 1, 1990; 80(6B): 1893 - 1909. [Abstract] [PDF]
|
|
|
|
|
|
D. B. HARRIS Comparison of the direction estimation performance of high-frequency seismic arrays and three-component stations Bulletin of the Seismological Society of America, December 1, 1990; 80(6B): 1951 - 1968. [Abstract] [PDF]
|
|
|
|
|
|
D. A. BAME, M. C. WALCK, and K. L. HIEBERT-DODD Azimuth estimation capabilities of the NORESS regional seismic array Bulletin of the Seismological Society of America, December 1, 1990; 80(6B): 1999 - 2015. [Abstract] [PDF]
|
|
|
|
|
|
H. ISRAELSSON Correlation of waveforms from closely spaced regional events Bulletin of the Seismological Society of America, December 1, 1990; 80(6B): 2177 - 2193. [Abstract] [PDF]
|
|
|
|
|
|
F. CASSIDY, A. CHRISTOFFERSSON, E. S. HUSEBYE, and B. O. RUUD Robust and reliable techniques for epicenter location using time and slowness observations Bulletin of the Seismological Society of America, February 1, 1990; 80(1): 140 - 149. [Abstract] [PDF]
|
|
|
|
|
|
F. RINGDAL and T. Kvaerna A multi-channel processing approach to real time network detection, phase association, and threshold monitoring Bulletin of the Seismological Society of America, December 1, 1989; 79(6): 1927 - 1940. [Abstract] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
