Physically Based and Empirical Ground Motion Prediction Equations for Multiple Intensity Measures (PGA, PGV, Ia, FIV3, CII, and Maximum Fourier Acceleration Spectra) on Sakhalin Island
In the present study, empirical attenuation relations for multiple ground motion intensity measures (PGA, PGV, Ia, FIV3, CII, and MFAS) were developed for Sakhalin Island (in the far east of Russia). A recorded strong motion dataset was used, making GMPEs applicable in active crustal regions with an...
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ftmdpi:oai:mdpi.com:/2076-3263/13/7/201/ 2023-08-20T04:09:30+02:00 Physically Based and Empirical Ground Motion Prediction Equations for Multiple Intensity Measures (PGA, PGV, Ia, FIV3, CII, and Maximum Fourier Acceleration Spectra) on Sakhalin Island Alexey Konovalov Ilia Orlin Andrey Stepnov Yulia Stepnova agris 2023-06-30 application/pdf https://doi.org/10.3390/geosciences13070201 EN eng Multidisciplinary Digital Publishing Institute Natural Hazards https://dx.doi.org/10.3390/geosciences13070201 https://creativecommons.org/licenses/by/4.0/ Geosciences; Volume 13; Issue 7; Pages: 201 GMPE Fourier acceleration spectra asperity Arias intensity active crust stress drop Text 2023 ftmdpi https://doi.org/10.3390/geosciences13070201 2023-08-01T10:42:29Z In the present study, empirical attenuation relations for multiple ground motion intensity measures (PGA, PGV, Ia, FIV3, CII, and MFAS) were developed for Sakhalin Island (in the far east of Russia). A recorded strong motion dataset was used, making GMPEs applicable in active crustal regions with an earthquake magnitude range of 4–6 and a distance range of up to 150 km. The hypocentral distance was used as a basic distance metric. For the first time in the research, an analytical representation of Arias intensity (Ia) was obtained in the framework of a multi-asperity source model. Asperities are considered as sub-sources of high-frequency incoherent radiation. The physical representation of the attenuation model in our study was based on a stress drop on the asperities and the ratio of the total rupture area to the combined area of asperities. The average stress drop on asperities for the examined earthquakes was approximately 13.4 MPa, and the ratio of the total rupture area to the asperity area was 0.22, which is generally close to similar estimates for crustal earthquakes. The coefficients and statistical scattering of the attenuation models were also analyzed. Moreover, a magnitude scale based on a modified Arias intensity is proposed in the present study. The new magnitude scale has an explicit physical meaning and is characterized by its simplicity of measurement. It is associated with the acceleration source spectrum level and can be successfully used in early warning systems. Text Sakhalin MDPI Open Access Publishing Geosciences 13 7 201 |
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MDPI Open Access Publishing |
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English |
topic |
GMPE Fourier acceleration spectra asperity Arias intensity active crust stress drop |
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GMPE Fourier acceleration spectra asperity Arias intensity active crust stress drop Alexey Konovalov Ilia Orlin Andrey Stepnov Yulia Stepnova Physically Based and Empirical Ground Motion Prediction Equations for Multiple Intensity Measures (PGA, PGV, Ia, FIV3, CII, and Maximum Fourier Acceleration Spectra) on Sakhalin Island |
topic_facet |
GMPE Fourier acceleration spectra asperity Arias intensity active crust stress drop |
description |
In the present study, empirical attenuation relations for multiple ground motion intensity measures (PGA, PGV, Ia, FIV3, CII, and MFAS) were developed for Sakhalin Island (in the far east of Russia). A recorded strong motion dataset was used, making GMPEs applicable in active crustal regions with an earthquake magnitude range of 4–6 and a distance range of up to 150 km. The hypocentral distance was used as a basic distance metric. For the first time in the research, an analytical representation of Arias intensity (Ia) was obtained in the framework of a multi-asperity source model. Asperities are considered as sub-sources of high-frequency incoherent radiation. The physical representation of the attenuation model in our study was based on a stress drop on the asperities and the ratio of the total rupture area to the combined area of asperities. The average stress drop on asperities for the examined earthquakes was approximately 13.4 MPa, and the ratio of the total rupture area to the asperity area was 0.22, which is generally close to similar estimates for crustal earthquakes. The coefficients and statistical scattering of the attenuation models were also analyzed. Moreover, a magnitude scale based on a modified Arias intensity is proposed in the present study. The new magnitude scale has an explicit physical meaning and is characterized by its simplicity of measurement. It is associated with the acceleration source spectrum level and can be successfully used in early warning systems. |
format |
Text |
author |
Alexey Konovalov Ilia Orlin Andrey Stepnov Yulia Stepnova |
author_facet |
Alexey Konovalov Ilia Orlin Andrey Stepnov Yulia Stepnova |
author_sort |
Alexey Konovalov |
title |
Physically Based and Empirical Ground Motion Prediction Equations for Multiple Intensity Measures (PGA, PGV, Ia, FIV3, CII, and Maximum Fourier Acceleration Spectra) on Sakhalin Island |
title_short |
Physically Based and Empirical Ground Motion Prediction Equations for Multiple Intensity Measures (PGA, PGV, Ia, FIV3, CII, and Maximum Fourier Acceleration Spectra) on Sakhalin Island |
title_full |
Physically Based and Empirical Ground Motion Prediction Equations for Multiple Intensity Measures (PGA, PGV, Ia, FIV3, CII, and Maximum Fourier Acceleration Spectra) on Sakhalin Island |
title_fullStr |
Physically Based and Empirical Ground Motion Prediction Equations for Multiple Intensity Measures (PGA, PGV, Ia, FIV3, CII, and Maximum Fourier Acceleration Spectra) on Sakhalin Island |
title_full_unstemmed |
Physically Based and Empirical Ground Motion Prediction Equations for Multiple Intensity Measures (PGA, PGV, Ia, FIV3, CII, and Maximum Fourier Acceleration Spectra) on Sakhalin Island |
title_sort |
physically based and empirical ground motion prediction equations for multiple intensity measures (pga, pgv, ia, fiv3, cii, and maximum fourier acceleration spectra) on sakhalin island |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2023 |
url |
https://doi.org/10.3390/geosciences13070201 |
op_coverage |
agris |
genre |
Sakhalin |
genre_facet |
Sakhalin |
op_source |
Geosciences; Volume 13; Issue 7; Pages: 201 |
op_relation |
Natural Hazards https://dx.doi.org/10.3390/geosciences13070201 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/geosciences13070201 |
container_title |
Geosciences |
container_volume |
13 |
container_issue |
7 |
container_start_page |
201 |
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1774722499499524096 |