Seismisite Toolkit

Chinese Version

Extrapolating VS30 from Shallow Boreholes

Input Borehole Profile

Location: Longitude Latitude

    Bottom Depth of Layers VS Geotechnical Type Geologic Age

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Import Borehole Profiles

Q&A

What is VS30?

Why do we need a extrapolated VS30?

How accurate does a extrapolated VS30 hold?

What model is the extrapolation method of this website based on?

How can the information of location slope, geotechnical profile, and geologic profile of a borehole benefits the extrapolation?

Can this tool extrapolate VS20 or VS of other depth values?

Can this tool extrapolate the VS profile of a borehole?

VS30 Map for Mainland China

The VS30 map are developed using the SCK model, based on 7,797 mainland China borehole measurements and SRTM30 DEM data.

Extent:Mainland China

Data type:Microsoft Excel

Resolution:0.1 arcdegree

License type:CC BY-SA

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Citation:Zhou J., X. Li, X. Tian, and G. Xu (2022). New Framework of Combining Observations with Topographic Slope to Estimate VS30 and Its Application on Building a VS30 Map for Mainland China, Bull. Seismol. Soc. Am. 112(4), 2049–2069, doi: 10.1785/0120210227

Mainland China VS30 Map

Dataset

The Strong-Motion Dataset (PGA, PGV, and Site VS30) of 2022 M6.8 Luding, China Earthquake

Extent:300 km of the epicenter

Data type:Microsoft Excel

License type:CC BY-SA

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Citation:Zhou J., N. Xi, C. C. Kang, L. Li, K. Chen, X. Tian, C. Wang, and J. F. Tian (2023). An Accessible Strong-Motion Dataset (PGA, PGV, and Site VS30) of 2022 M6.8 Luding, China Earthquake. Earthquake Science, 36, doi: 10.1016/j.eqs.2023.01.001

VS30 Map for Pakistan and Kashmir

Extent:Pakistan and Kashmir

Data type:Microsoft Excel

Resolution:0.1 arcdegree

License type:CC BY-SA

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Citation:Zhou J., L. Li, G. Y. Xu, C. L. Li, C. Wang, and X. Tian (2021). Evaluating Earthquake Hazard and Risk in Pakistan: Institute of Geophysics, CEA Seismic Risk Assessment for Countries along the Belt and Road Report, 2021-001, 80p.

California VS30 dataset of Boore (2003)

Extent:California, USA

Data type:Microsoft Excel

License type:CC BY

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Citation:Boore, D. M. (2003). A compendium of P- and S-wave velocities from surface-to-borehole logging: Summary and reanalysis of previously published data and analysis of unpublished data, U.S. Geol. Surv. Open-File Rept. 03-191, 13 pp.

VS30 Data of Turkey AFAD Strong-Motion Network Stations and VS30 Map of Turkey and Adjacent Area

Extent:Turkey and Adjacent Area Related to the Feb. 2023 Turkey Earthquake Sequence

Data type:Microsoft Excel; jpg

License type:CC BY-SA

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Citation: Zhou J. (2023). VS30 Data of Turkey AFAD Strong-Motion Network Stations and VS30 Map of Turkey and Adjacent Area Related to the Feb. 2023 Turkey Earthquake Sequence, Technical Report, DOI: 10.13140/RG.2.2.24389.12007

An Open Access Dataset for Strong-Motion Data (PGA, PGV, and Site VS30) of 2023 M6.2 Jishishan, Gansu, China Earthquake

Extent:2 arcdegree (approximately 200 km) of the epicenter

Data type:Microsoft Excel

License type:CC BY

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Citation:Zhou J., L. Li, N. Xi, K. Chen, X. Tian, C. Wang, and J. F. Tian (2024). An Open Access Dataset for Strong-Motion Data (PGA, PGV, and Site VS30) of 2023 M6.2 Jishishan, Gansu, China Earthquake. Earthquake Science, xx.xxxx, doi: 10.1016/j.eqs.2024.04.002