Using group velocities of seismic phases for regional event discrimination

Vladimir Pinsky; Avi Shapira; Yefim Gitterman

doi:10.1016/S0031-9201(99)00020-5

Using group velocities of seismic phases for regional event discrimination

Vladimir Pinsky, Avi Shapira, Yefim Gitterman

Research output: Contribution to journal › Article › peer-review

Abstract

We examined over the Israel Seismic Network (ISN) the seismogram envelopes vs. group velocity V = R/T, where R is the epicenter distance and T the travel time, and found out a persistent difference between quarry blasts and earthquakes. The data include 53 seismic events occurring in northern Israel with magnitudes of M(L) = 1.0-2.6 and at distances of 15-310 km. Within the 1-4 km/s range we measured the velocity v(ms) at which the envelope reaches its maximum for each ISN station. A simple linear discrimination function c = b + 0.33 a, based on an empirical relationship between the V(ms) and R: V(ms) = a + b In(R) provides effective separation between the regional earthquakes and explosions. These results are attributed to different excitation of regional surface waves from these two types of seismic events.

Original language	English
Pages (from-to)	155-159
Number of pages	5
Journal	Physics of the Earth and Planetary Interiors
Volume	113
Issue number	1-4
DOIs	https://doi.org/10.1016/S0031-9201(99)00020-5
State	Published - Jun 1999
Externally published	Yes

Bibliographical note

Funding Information:
This study was sponsored by the US DOE and monitored by the Air Force Phillips Laboratory under Contract Number F19628-95-K-0006 and partially by the US Department of Defense, Contract Number DSWA01-97-C-0151 and by the German Israel Foundation for Scientific Research and Development, Contract No.: G 0463-245.08/95.

Keywords

Group velocities
Israel Seismic Network
Seismic phases

ASJC Scopus subject areas

Astronomy and Astrophysics
Geophysics
Physics and Astronomy (miscellaneous)
Space and Planetary Science

Access to Document

10.1016/S0031-9201(99)00020-5

Cite this

@article{3180592ca24d416e9c0c7566779ee0cb,

title = "Using group velocities of seismic phases for regional event discrimination",

abstract = "We examined over the Israel Seismic Network (ISN) the seismogram envelopes vs. group velocity V = R/T, where R is the epicenter distance and T the travel time, and found out a persistent difference between quarry blasts and earthquakes. The data include 53 seismic events occurring in northern Israel with magnitudes of M(L) = 1.0-2.6 and at distances of 15-310 km. Within the 1-4 km/s range we measured the velocity v(ms) at which the envelope reaches its maximum for each ISN station. A simple linear discrimination function c = b + 0.33 a, based on an empirical relationship between the V(ms) and R: V(ms) = a + b In(R) provides effective separation between the regional earthquakes and explosions. These results are attributed to different excitation of regional surface waves from these two types of seismic events.",

keywords = "Group velocities, Israel Seismic Network, Seismic phases",

author = "Vladimir Pinsky and Avi Shapira and Yefim Gitterman",

note = "Funding Information: This study was sponsored by the US DOE and monitored by the Air Force Phillips Laboratory under Contract Number F19628-95-K-0006 and partially by the US Department of Defense, Contract Number DSWA01-97-C-0151 and by the German Israel Foundation for Scientific Research and Development, Contract No.: G 0463-245.08/95. ",

year = "1999",

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doi = "10.1016/S0031-9201(99)00020-5",

language = "English",

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pages = "155--159",

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T1 - Using group velocities of seismic phases for regional event discrimination

AU - Pinsky, Vladimir

AU - Shapira, Avi

AU - Gitterman, Yefim

N1 - Funding Information: This study was sponsored by the US DOE and monitored by the Air Force Phillips Laboratory under Contract Number F19628-95-K-0006 and partially by the US Department of Defense, Contract Number DSWA01-97-C-0151 and by the German Israel Foundation for Scientific Research and Development, Contract No.: G 0463-245.08/95.

PY - 1999/6

Y1 - 1999/6

N2 - We examined over the Israel Seismic Network (ISN) the seismogram envelopes vs. group velocity V = R/T, where R is the epicenter distance and T the travel time, and found out a persistent difference between quarry blasts and earthquakes. The data include 53 seismic events occurring in northern Israel with magnitudes of M(L) = 1.0-2.6 and at distances of 15-310 km. Within the 1-4 km/s range we measured the velocity v(ms) at which the envelope reaches its maximum for each ISN station. A simple linear discrimination function c = b + 0.33 a, based on an empirical relationship between the V(ms) and R: V(ms) = a + b In(R) provides effective separation between the regional earthquakes and explosions. These results are attributed to different excitation of regional surface waves from these two types of seismic events.

AB - We examined over the Israel Seismic Network (ISN) the seismogram envelopes vs. group velocity V = R/T, where R is the epicenter distance and T the travel time, and found out a persistent difference between quarry blasts and earthquakes. The data include 53 seismic events occurring in northern Israel with magnitudes of M(L) = 1.0-2.6 and at distances of 15-310 km. Within the 1-4 km/s range we measured the velocity v(ms) at which the envelope reaches its maximum for each ISN station. A simple linear discrimination function c = b + 0.33 a, based on an empirical relationship between the V(ms) and R: V(ms) = a + b In(R) provides effective separation between the regional earthquakes and explosions. These results are attributed to different excitation of regional surface waves from these two types of seismic events.

KW - Group velocities

KW - Israel Seismic Network

KW - Seismic phases

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U2 - 10.1016/S0031-9201(99)00020-5

DO - 10.1016/S0031-9201(99)00020-5

M3 - Article

AN - SCOPUS:0033384350

SN - 0031-9201

VL - 113

SP - 155

EP - 159

JO - Physics of the Earth and Planetary Interiors

JF - Physics of the Earth and Planetary Interiors

IS - 1-4

ER -

Using group velocities of seismic phases for regional event discrimination

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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