Results 191 to 200 of about 5,872 (236)

VS30-based relationship for Chinese site classification

Engineering Geology, 2023
Junju Xie, Kewei Li, Xiaojun Li, Zhao An, Pengfei Wang   +4 more
openaire   +2 more sources

A Texas-specific VS30 map incorporating geology and VS30 observations

Earthquake Spectra, 2021
A Texas-specific [Formula: see text] map that uses geostatistical kriging integrated with a region-specific geologic proxy, field measurements of [Formula: see text], and P-wave seismogram estimates of [Formula: see text] is developed. The region-specific geologic proxy is used first to predict [Formula: see text] from the surface geologic conditions ...
Meibai Li, Ellen M Rathje, Brady R Cox, Michael Yust   +3 more
openaire   +1 more source

EarlyVue VS30 Vitals Monitors

Biomedical Safety & Standards, 2023
openaire   +2 more sources

Vs30: Proxy for Seismic Amplification?

Seismological Research Letters, 2008
The seismic codes of many countries base their site classifications on the Vs30 parameter, i.e., the average shear-wave velocity in the first 30 m of subsoil. And yet, despite the widespread use of this parameter, there is not universal agreement that this is a valid proxy for seismic amplification.
CASTELLARO, SILVIA, MULARGIA, FRANCESCO, ROSSI, PIERMARIA LUIGI   +2 more
openaire   +1 more source

A Probabilistic Framework to Model Distributions of VS30

Bulletin of the Seismological Society of America, 2021
ABSTRACT The time-averaged shear-wave velocity in the upper 30 m depth from the ground surface, or VS30, is often used as a predictor to describe local site effects in ground-motion models. Although VS30 is typically determined from in situ measurements, it is not always feasible to obtain such measurements due to project restrictions or
Utkarsh Mital, Sean Ahdi, Julie Herrick, Junko Iwahashi, Alexandros Savvaidis, Alan Yong   +5 more
openaire   +1 more source

U.S. National VS30 Models and Maps Informed by Remote Sensing and Machine Learning

Seismological Research Letters, 2023
The shear-wave velocity time averaged over the upper 30 m (VS30) is widely used as a proxy for site effects, forms the basis of seismic site class, and underpins site-amplification factors in empirical ground-motion models. Many earthquake simulations,
Mertcan Geyin, B. Maurer
semanticscholar   +1 more source

Proxy-based Vs30 modelling of the Muzaffarabad, northern Pakistan

Environmental Earth Sciences
Tanveer Ahmed, Khaista Rehman, Muhammad Shafique, Wajid Ali, Nisar Ali Shah   +4 more
openaire   +2 more sources

VS30 Estimates Using Constrained H/V Measurements

Bulletin of the Seismological Society of America, 2009
Abstract Most seismic codes adopt the average shear-wave velocity as a key parameter in the first 30 m of subsoil ( V S 30 ). Estimates of V S 30 are therefore required for both large- and small-scale seismic microzonation. We propose a technique to measure the V S 30 based on the horizontal to vertical spectral ratio (H/V) of microtremor ...
CASTELLARO, SILVIA, MULARGIA, FRANCESCO
openaire   +1 more source

Regional Model Vs30 and Seismic Ground Types for Ukraine

17th International Conference Monitoring of Geological Processes and Ecological Condition of the Environment, 2023
M. Dovbnich, I. Viktosenko
openaire   +2 more sources

Analyzing the Stability of P-Wave Seismogram Method for Estimating VS30: Insights from Two Accelerometer Arrays in Greece

Bulletin of The Seismological Society of America (BSSA)
We study the applicability and limitations of the single-station P-wave seismogram method for estimating VS30 by analyzing data from two accelerometer arrays in Greece.
Evi Pappa, C. Papazachos, N. Chatzis, I. Grendas, N. Theodoulidis, P. Triantafyllidis   +5 more
semanticscholar   +1 more source