Estimating VS30 at Korean Peninsular seismic observatory stations using HVSR of event records

Jae Kwang Ahn; Dong Youp Kwak; Han Saem Kim

doi:10.1016/j.soildyn.2021.106650

Estimating VS30 at Korean Peninsular seismic observatory stations using HVSR of event records

Jae Kwang Ahn, Dong Youp Kwak, Han Saem Kim

Department of Civil and Environmental Engineering

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

16 Scopus citations

Abstract

The V_S30 of 89 stations in Republic of Korea are predicted using semi-empirical relationship between natural frequency (f_p) selected from horizontal-to-vertical spectral ratio (HVSR) and time averaged shear wave velocity down to 30 m depth (V_S30). The installation of seismic stations has been accelerated in Republic of Korea after two damaging earthquakes at 2016–2017, but the majority of stations do not have geophysical investigation yet, and even for a few stations the investigation is prohibited due to deforestation issue and civil complaints. The objective of this study is to predict V_S30 for stations without investigation using f_p to V_S30 relationship. The HVSR of 48 stations with measured V_S30 are analyzed to find appropriate f_p selection and the best-fitted model. We found that the f_p-V_S30 relationship is weak if the peak is not distinct and HVSR amplitude is low, and the model developed for the stable continent region fits the best.

Original language	English
Article number	106650
Journal	Soil Dynamics and Earthquake Engineering
Volume	146
DOIs	https://doi.org/10.1016/j.soildyn.2021.106650
State	Published - Jul 2021

Keywords

Empirical function
HVSR
Natural frequency
Seismic station
V

Access to Document

10.1016/j.soildyn.2021.106650

Cite this

@article{e10556551a6440c7b528374c5aa75d52,

title = "Estimating VS30 at Korean Peninsular seismic observatory stations using HVSR of event records",

abstract = "The VS30 of 89 stations in Republic of Korea are predicted using semi-empirical relationship between natural frequency (fp) selected from horizontal-to-vertical spectral ratio (HVSR) and time averaged shear wave velocity down to 30 m depth (VS30). The installation of seismic stations has been accelerated in Republic of Korea after two damaging earthquakes at 2016–2017, but the majority of stations do not have geophysical investigation yet, and even for a few stations the investigation is prohibited due to deforestation issue and civil complaints. The objective of this study is to predict VS30 for stations without investigation using fp to VS30 relationship. The HVSR of 48 stations with measured VS30 are analyzed to find appropriate fp selection and the best-fitted model. We found that the fp-VS30 relationship is weak if the peak is not distinct and HVSR amplitude is low, and the model developed for the stable continent region fits the best.",

keywords = "Empirical function, HVSR, Natural frequency, Seismic station, V",

author = "Ahn, {Jae Kwang} and Kwak, {Dong Youp} and Kim, {Han Saem}",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

month = jul,

doi = "10.1016/j.soildyn.2021.106650",

language = "English",

volume = "146",

journal = "Soil Dynamics and Earthquake Engineering",

issn = "0267-7261",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Estimating VS30 at Korean Peninsular seismic observatory stations using HVSR of event records

AU - Ahn, Jae Kwang

AU - Kwak, Dong Youp

AU - Kim, Han Saem

PY - 2021/7

Y1 - 2021/7

N2 - The VS30 of 89 stations in Republic of Korea are predicted using semi-empirical relationship between natural frequency (fp) selected from horizontal-to-vertical spectral ratio (HVSR) and time averaged shear wave velocity down to 30 m depth (VS30). The installation of seismic stations has been accelerated in Republic of Korea after two damaging earthquakes at 2016–2017, but the majority of stations do not have geophysical investigation yet, and even for a few stations the investigation is prohibited due to deforestation issue and civil complaints. The objective of this study is to predict VS30 for stations without investigation using fp to VS30 relationship. The HVSR of 48 stations with measured VS30 are analyzed to find appropriate fp selection and the best-fitted model. We found that the fp-VS30 relationship is weak if the peak is not distinct and HVSR amplitude is low, and the model developed for the stable continent region fits the best.

AB - The VS30 of 89 stations in Republic of Korea are predicted using semi-empirical relationship between natural frequency (fp) selected from horizontal-to-vertical spectral ratio (HVSR) and time averaged shear wave velocity down to 30 m depth (VS30). The installation of seismic stations has been accelerated in Republic of Korea after two damaging earthquakes at 2016–2017, but the majority of stations do not have geophysical investigation yet, and even for a few stations the investigation is prohibited due to deforestation issue and civil complaints. The objective of this study is to predict VS30 for stations without investigation using fp to VS30 relationship. The HVSR of 48 stations with measured VS30 are analyzed to find appropriate fp selection and the best-fitted model. We found that the fp-VS30 relationship is weak if the peak is not distinct and HVSR amplitude is low, and the model developed for the stable continent region fits the best.

KW - Empirical function

KW - HVSR

KW - Natural frequency

KW - Seismic station

KW - V

UR - http://www.scopus.com/inward/record.url?scp=85105250639&partnerID=8YFLogxK

U2 - 10.1016/j.soildyn.2021.106650

DO - 10.1016/j.soildyn.2021.106650

M3 - Article

AN - SCOPUS:85105250639

SN - 0267-7261

VL - 146

JO - Soil Dynamics and Earthquake Engineering

JF - Soil Dynamics and Earthquake Engineering

M1 - 106650

ER -

Estimating VS30 at Korean Peninsular seismic observatory stations using HVSR of event records

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this