A note on the use of strong-motion data from small magnitude earthquakes for empirical ground motion estimation

Research output: Contribution to conferencePaper

Abstract

A common practice in the derivation of equations for the prediction of strong ground motions is to supplement the still sparse data from large damaging earthquakes with data from smaller earthquakes, which is much more abundant. In this paper, it is shown that even though strong-motion records from small magnitude earthquakes are often affected by recording problems, such as low A/D convertor resolution, they often can yield accurate response spectral accelerations (SAs). The paper then highlights some possible problems with the practice of combining strong-motion data from small and large magnitude earthquakes. These possible problems include: the difficulty of obtaining estimates of the independent parameters (magnitude, distance and faulting mechanism); more rapid decay of ground motions from small earthquakes compared to ground motions from large earthquakes; higher dependence of ground motions on magnitude for small earthquakes compared to large earthquakes; and larger variability in ground motions from small earthquakes compared to large earthquakes.

Conference

ConferenceSkopje Earthquake 40 Years of European Earthquake Engineering
Abbreviated titleSE-40EEE
CountryMacedonia, The Former Yugoslav Republic of
CitySkopje, Ohrid
Period26/08/0329/08/03

Fingerprint

strong motion
Motion estimation
earthquake magnitude
ground motion
Earthquakes
earthquake
yield response
Faulting
faulting
prediction

Keywords

  • seismic hazard
  • ground-motion prediction
  • GMPEs
  • small earthquakes
  • strong motion data
  • engineering seismology

Cite this

Douglas, J. (2003). A note on the use of strong-motion data from small magnitude earthquakes for empirical ground motion estimation. Paper presented at Skopje Earthquake 40 Years of European Earthquake Engineering, Skopje, Ohrid, Macedonia, The Former Yugoslav Republic of.
Douglas, J. / A note on the use of strong-motion data from small magnitude earthquakes for empirical ground motion estimation. Paper presented at Skopje Earthquake 40 Years of European Earthquake Engineering, Skopje, Ohrid, Macedonia, The Former Yugoslav Republic of.8 p.
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title = "A note on the use of strong-motion data from small magnitude earthquakes for empirical ground motion estimation",
abstract = "A common practice in the derivation of equations for the prediction of strong ground motions is to supplement the still sparse data from large damaging earthquakes with data from smaller earthquakes, which is much more abundant. In this paper, it is shown that even though strong-motion records from small magnitude earthquakes are often affected by recording problems, such as low A/D convertor resolution, they often can yield accurate response spectral accelerations (SAs). The paper then highlights some possible problems with the practice of combining strong-motion data from small and large magnitude earthquakes. These possible problems include: the difficulty of obtaining estimates of the independent parameters (magnitude, distance and faulting mechanism); more rapid decay of ground motions from small earthquakes compared to ground motions from large earthquakes; higher dependence of ground motions on magnitude for small earthquakes compared to large earthquakes; and larger variability in ground motions from small earthquakes compared to large earthquakes.",
keywords = "seismic hazard, ground-motion prediction, GMPEs, small earthquakes, strong motion data, engineering seismology",
author = "J. Douglas",
year = "2003",
month = "8",
day = "29",
language = "English",
note = "Skopje Earthquake 40 Years of European Earthquake Engineering, SE-40EEE ; Conference date: 26-08-2003 Through 29-08-2003",

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Douglas, J 2003, 'A note on the use of strong-motion data from small magnitude earthquakes for empirical ground motion estimation' Paper presented at Skopje Earthquake 40 Years of European Earthquake Engineering, Skopje, Ohrid, Macedonia, The Former Yugoslav Republic of, 26/08/03 - 29/08/03, .

A note on the use of strong-motion data from small magnitude earthquakes for empirical ground motion estimation. / Douglas, J.

2003. Paper presented at Skopje Earthquake 40 Years of European Earthquake Engineering, Skopje, Ohrid, Macedonia, The Former Yugoslav Republic of.

Research output: Contribution to conferencePaper

TY - CONF

T1 - A note on the use of strong-motion data from small magnitude earthquakes for empirical ground motion estimation

AU - Douglas, J.

PY - 2003/8/29

Y1 - 2003/8/29

N2 - A common practice in the derivation of equations for the prediction of strong ground motions is to supplement the still sparse data from large damaging earthquakes with data from smaller earthquakes, which is much more abundant. In this paper, it is shown that even though strong-motion records from small magnitude earthquakes are often affected by recording problems, such as low A/D convertor resolution, they often can yield accurate response spectral accelerations (SAs). The paper then highlights some possible problems with the practice of combining strong-motion data from small and large magnitude earthquakes. These possible problems include: the difficulty of obtaining estimates of the independent parameters (magnitude, distance and faulting mechanism); more rapid decay of ground motions from small earthquakes compared to ground motions from large earthquakes; higher dependence of ground motions on magnitude for small earthquakes compared to large earthquakes; and larger variability in ground motions from small earthquakes compared to large earthquakes.

AB - A common practice in the derivation of equations for the prediction of strong ground motions is to supplement the still sparse data from large damaging earthquakes with data from smaller earthquakes, which is much more abundant. In this paper, it is shown that even though strong-motion records from small magnitude earthquakes are often affected by recording problems, such as low A/D convertor resolution, they often can yield accurate response spectral accelerations (SAs). The paper then highlights some possible problems with the practice of combining strong-motion data from small and large magnitude earthquakes. These possible problems include: the difficulty of obtaining estimates of the independent parameters (magnitude, distance and faulting mechanism); more rapid decay of ground motions from small earthquakes compared to ground motions from large earthquakes; higher dependence of ground motions on magnitude for small earthquakes compared to large earthquakes; and larger variability in ground motions from small earthquakes compared to large earthquakes.

KW - seismic hazard

KW - ground-motion prediction

KW - GMPEs

KW - small earthquakes

KW - strong motion data

KW - engineering seismology

M3 - Paper

ER -

Douglas J. A note on the use of strong-motion data from small magnitude earthquakes for empirical ground motion estimation. 2003. Paper presented at Skopje Earthquake 40 Years of European Earthquake Engineering, Skopje, Ohrid, Macedonia, The Former Yugoslav Republic of.