Investigating possible regional dependence in strong ground motions

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)

Abstract

It is common practice to use ground-motion models, often developed by regression on recorded accelerograms, to predict the expected earthquake ground motions at sites of interest. An important consideration when selecting these models is the possible dependence of ground motions on geographical region, i.e., are median ground motions in the (target) region of interest for a given magnitude and distance the same as those in the (host) region where a ground-motion model is from, and are the aleatory variabilities of ground motions also similar? In this brief article, some of the recent literature with relevance to these questions is summarized. It is concluded that although some regions seem to show considerable differences in shaking it is currently more defensible to use well-constrained models, possibly based on data from other regions, rather than use local, often poorly-constrained, models. In addition, it is noted that the presence of "pseudo-regional dependency" due to differences in, for example, focal depths, average shear-wave velocity profiles or focal mechanisms can lead to apparent variations between areas when these variations could be captured in well-characterized ground-motion prediction equations.

Original languageEnglish
Title of host publicationEarthquake Data in Engineering Seismology
EditorsSinan Akkar, Polat Gülkan, Torild van Eck
Pages29-38
Number of pages10
Volume14
DOIs
Publication statusPublished - 2011

Publication series

NameGeotechnical, Geological and Earthquake Engineering
PublisherSpringer
Volume14
ISSN (Print)1573-6059

Fingerprint

ground motion
Geographical regions
Shear waves
Earthquakes
geographical region
focal mechanism
velocity profile
wave velocity
S-wave
earthquake
prediction

Keywords

  • ground motion models
  • strong ground motion
  • earthquake ground motions

Cite this

Douglas, J. (2011). Investigating possible regional dependence in strong ground motions. In S. Akkar, P. Gülkan, & T. van Eck (Eds.), Earthquake Data in Engineering Seismology (Vol. 14, pp. 29-38). (Geotechnical, Geological and Earthquake Engineering; Vol. 14). https://doi.org/10.1007/978-94-007-0152-6_3
Douglas, John. / Investigating possible regional dependence in strong ground motions. Earthquake Data in Engineering Seismology. editor / Sinan Akkar ; Polat Gülkan ; Torild van Eck. Vol. 14 2011. pp. 29-38 (Geotechnical, Geological and Earthquake Engineering).
@inbook{3762173f9d1148998f6f36414c26bdeb,
title = "Investigating possible regional dependence in strong ground motions",
abstract = "It is common practice to use ground-motion models, often developed by regression on recorded accelerograms, to predict the expected earthquake ground motions at sites of interest. An important consideration when selecting these models is the possible dependence of ground motions on geographical region, i.e., are median ground motions in the (target) region of interest for a given magnitude and distance the same as those in the (host) region where a ground-motion model is from, and are the aleatory variabilities of ground motions also similar? In this brief article, some of the recent literature with relevance to these questions is summarized. It is concluded that although some regions seem to show considerable differences in shaking it is currently more defensible to use well-constrained models, possibly based on data from other regions, rather than use local, often poorly-constrained, models. In addition, it is noted that the presence of {"}pseudo-regional dependency{"} due to differences in, for example, focal depths, average shear-wave velocity profiles or focal mechanisms can lead to apparent variations between areas when these variations could be captured in well-characterized ground-motion prediction equations.",
keywords = "ground motion models, strong ground motion, earthquake ground motions",
author = "John Douglas",
year = "2011",
doi = "10.1007/978-94-007-0152-6_3",
language = "English",
isbn = "9789400701519",
volume = "14",
series = "Geotechnical, Geological and Earthquake Engineering",
publisher = "Springer",
pages = "29--38",
editor = "Sinan Akkar and Polat G{\"u}lkan and {van Eck}, Torild",
booktitle = "Earthquake Data in Engineering Seismology",

}

Douglas, J 2011, Investigating possible regional dependence in strong ground motions. in S Akkar, P Gülkan & T van Eck (eds), Earthquake Data in Engineering Seismology. vol. 14, Geotechnical, Geological and Earthquake Engineering, vol. 14, pp. 29-38. https://doi.org/10.1007/978-94-007-0152-6_3

Investigating possible regional dependence in strong ground motions. / Douglas, John.

Earthquake Data in Engineering Seismology. ed. / Sinan Akkar; Polat Gülkan; Torild van Eck. Vol. 14 2011. p. 29-38 (Geotechnical, Geological and Earthquake Engineering; Vol. 14).

Research output: Chapter in Book/Report/Conference proceedingChapter

TY - CHAP

T1 - Investigating possible regional dependence in strong ground motions

AU - Douglas, John

PY - 2011

Y1 - 2011

N2 - It is common practice to use ground-motion models, often developed by regression on recorded accelerograms, to predict the expected earthquake ground motions at sites of interest. An important consideration when selecting these models is the possible dependence of ground motions on geographical region, i.e., are median ground motions in the (target) region of interest for a given magnitude and distance the same as those in the (host) region where a ground-motion model is from, and are the aleatory variabilities of ground motions also similar? In this brief article, some of the recent literature with relevance to these questions is summarized. It is concluded that although some regions seem to show considerable differences in shaking it is currently more defensible to use well-constrained models, possibly based on data from other regions, rather than use local, often poorly-constrained, models. In addition, it is noted that the presence of "pseudo-regional dependency" due to differences in, for example, focal depths, average shear-wave velocity profiles or focal mechanisms can lead to apparent variations between areas when these variations could be captured in well-characterized ground-motion prediction equations.

AB - It is common practice to use ground-motion models, often developed by regression on recorded accelerograms, to predict the expected earthquake ground motions at sites of interest. An important consideration when selecting these models is the possible dependence of ground motions on geographical region, i.e., are median ground motions in the (target) region of interest for a given magnitude and distance the same as those in the (host) region where a ground-motion model is from, and are the aleatory variabilities of ground motions also similar? In this brief article, some of the recent literature with relevance to these questions is summarized. It is concluded that although some regions seem to show considerable differences in shaking it is currently more defensible to use well-constrained models, possibly based on data from other regions, rather than use local, often poorly-constrained, models. In addition, it is noted that the presence of "pseudo-regional dependency" due to differences in, for example, focal depths, average shear-wave velocity profiles or focal mechanisms can lead to apparent variations between areas when these variations could be captured in well-characterized ground-motion prediction equations.

KW - ground motion models

KW - strong ground motion

KW - earthquake ground motions

UR - http://www.scopus.com/inward/record.url?scp=84874362875&partnerID=8YFLogxK

U2 - 10.1007/978-94-007-0152-6_3

DO - 10.1007/978-94-007-0152-6_3

M3 - Chapter

SN - 9789400701519

VL - 14

T3 - Geotechnical, Geological and Earthquake Engineering

SP - 29

EP - 38

BT - Earthquake Data in Engineering Seismology

A2 - Akkar, Sinan

A2 - Gülkan, Polat

A2 - van Eck, Torild

ER -

Douglas J. Investigating possible regional dependence in strong ground motions. In Akkar S, Gülkan P, van Eck T, editors, Earthquake Data in Engineering Seismology. Vol. 14. 2011. p. 29-38. (Geotechnical, Geological and Earthquake Engineering). https://doi.org/10.1007/978-94-007-0152-6_3