Results 231 to 240 of about 25,810 (252)

Multichannel analysis of surface waves based on short array stacked Correlation gather

Soil Dynamics and Earthquake Engineering, 2021
Abstract Multichannel analysis of surface waves (MASW) has played an important role in shear wave velocity survey of subsurface. Modern urban engineering construction needs more and more high-resolution detection of shallow underground objects. However, the traditional MASW method will reduce the detection depth when the receiving array length is ...
Hongxing Li, Chunhui Tao, Cai Liu, Guangnan Huang, Zhenan Yao, Hua Zhang, Xiangteng Wang   +6 more
openaire   +1 more source

Multichannel Analysis of Surface Wave (MASW) Method for Geotechnical Site Characterization

Earthquake Engineering and Soil Dynamics, 2005
A surface wave method is often used to map shear wave velocity variation of soil with depth. However, measured seismic wave field usually contains such unfavorable waves as higher modes of surface waves, body waves, and ambient noise. These waves can significantly influence results of the analysis if not properly handled. Since the conventional surface
Dayakar Penumadu, Choon B. Park
openaire   +1 more source

Detection of subterranean cavities and anomalies using multichannel analysis of surface wave

Geomechanics and Geoengineering, 2020
Both underground cavities and anomalies are important issues which may cause damage to ground strata and subsequently to their overlaying structures due to subsidence and excessive settlement.
Hossein Rahnema, Leila Ehsaninezhad, Fatemeh Dashti, Ghasem Talebi   +3 more
openaire   +1 more source

Noise Reduction Technique Applied to the Multichannel Analysis of Surface Waves

Acta Geologica Sinica - English Edition, 2012
AbstractThis paper shows the presence of noises and technique to reduce these noises during the surface wave analysis. The frequency‐dependent properties of Rayleigh‐type surface waves can be used for imaging and characterizing the shallow subsurface.
Taohidul ISLAM, Zamri CHIK, Mohd Marzuki MUSTAFA   +2 more
openaire   +1 more source

APPLICATION OF MULTICHANNEL ANALYSIS OF SURFACE WAVE (MASW) IN GEOTECHNICS

Zbornik radova
MASW (Multichannel Analysis of Surface Waves) is a non-invasive seismic method used for geotechnical site investigations, developed in 1999 in the USA. Its primary purpose is to assess soil stiffness by measuring the shear wave velocity (Vs) beneath the surface, which is crucial for geotechnical analysis.
Dušan Brstina, Dragana Savić, Novak Brstina   +2 more
openaire   +1 more source

Multichannel analysis of surface waves method for shallow soil profile exploration.

The Journal of the Acoustical Society of America, 2009
In order to explore shallow soil properties in a noninvasive manner, a multichannel analysis of surface waves method was employed to obtain soil shear wave velocity profile up to a couple of meters. In the study, an electromechanical shaker operating in a frequency-sweeping mode was placed on the ground to excite Rayleigh waves propagating along the ...
Zhiqu Lu, James Sabatier
openaire   +1 more source

Construction Of 2-D Vertical Shear-Wave Velocity Field By The Multichannel Analysis Of Surface Wave Technique

13th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, 2000
We present a method that utilizes the Multichannel Analysis of Surface Waves (MASW) technique and a standard common depth point (CDP) roll-along acquisition format similar to conventional petroleum exploration seismic data acquisition to construct a vertical section of the near-surface shear (S)-wave velocity field.
Jianghai Xia, Richard D. Miller, Choon B. Park, Julian Ivanov   +3 more
openaire   +1 more source

Evaluating hazards at salt cavern sites using multichannel analysis of surface waves

The Leading Edge, 2013
Subsidence resulting in sinkholes within dissolution mine fields in and around the city of Hutchinson, Kansas, USA (Figure 1) has been reported for more than 90 years. Salt dissolution and the resulting unpredictable upward migration of the dissolution voids can be observed both in proximity to well bores (dissolution mining, brine disposal, and oil ...
Julian Ivanov, Birgit Leitner, William Shefchik, J. Tyler Shwenk, Shelby L. Peterie   +4 more
openaire   +1 more source

Estimation of near-surface shear-wave velocities and quality factors using multichannel analysis of surface-wave methods

Journal of Applied Geophysics, 2014
Abstract This overview article gives a picture of multichannel analysis of high-frequency surface (Rayleigh and Love) waves developed mainly by research scientists at the Kansas Geological Survey, the University of Kansas and China University of Geosciences (Wuhan) during the last eighteen years by discussing dispersion imaging techniques, inversion ...
openaire   +1 more source

Determination of Shear Wave Velocity and Depth to Basement Using Multichannel Analysis of Surface Wave Technique

Journal of the Geological Society of India, 2012
Abstract The dispersive characteristics of Rayleigh type surface waves were utilized to estimate shear wave velocity (Vs) profile followed by imaging the shallow subsurface granitic layers in the heart of Hyderabad. The reliability of Multichannel Analysis of Surface Waves (MASW) depends on the accurate determination of phase velocities ...
T. Seshunarayana, N. Sundararajan
openaire   +1 more source