Results 11 to 20 of about 407,593 (165)

In-process fast surface measurement using wavelength scanning interferometry [PDF]

open access: yes, 2012
A wavelength scanning interferometry system for fast areal surface measurement of micro and nano-scale surfaces which is immune to environmental noise is introduced in this paper. It can be used for surface measurement of discontinuous surface profiles
Gao, F.   +4 more
core   +4 more sources

Non-physical energy in seismic interferometry [PDF]

open access: yes, 2012
Non-physical arrivals produced by seismic interferometry, the process whereby Green’s functions are synthesized between two points by cross-correlation, crossconvolution or deconvolution, are often considered to provide little information about the Earth’
King, Simon James
core   +3 more sources

Spectral Domain Low- Coherence Interferometry for On-line Surface Inspection [PDF]

open access: yes, 2013
We present an on-line surface measurement technique based on spectral domain low-coherence interferometry (SD-LCI), which can obtain a one dimensional surface profile with just one shot.
Gao, F.   +5 more
core   +3 more sources

Interferometric surface-wave isolation and removal [PDF]

open access: yes, 2007
The removal of surface waves (ground roll) from land seismic data is critical in seismic processing because these waves tend to mask informative body-wave arrivals.
Robertsson, Johan O. A.   +3 more
core   +1 more source

A near-surface seismic scattered wave separation method

open access: yesPetroleum Exploration and Development, 2014
Considering that near-surface scattered waves could not be suppressed by conventional denoise method, this paper analyzes the characteristics of scattered waves and achieves the near-surface scattered wave separation by the seismic interferometry theory.
Jixiang XU, B F McLean, Xuejuan SONG
doaj   +1 more source

Spatiotemporal evaluation of Rayleigh surface wave estimated from roadside dark fiber DAS array and traffic noise

open access: yesSeismica, 2023
Seismic imaging and monitoring of the near-surface structure are crucial for the sustainable development of urban areas. However, standard seismic surveys based on cabled or autonomous geophone arrays are expensive and hard to adapt to noisy ...
Rafał Czarny, Tieyuan Zhu, Junzhu Shen
doaj   +1 more source

Recent Crustal Deformation in West-Central South America [PDF]

open access: yes, 2003
I use interferometric synthetic aperture radar (InSAR) to create maps of crustal deformation along the coast and within the volcanic arc of central South America. I image deformation associated with six subduction zone earthquakes, four volcanic centers,
Pritchard, Matthew Earl
core   +1 more source

Physics-Based Relationship for Pore Pressure and Vertical Stress Monitoring Using Seismic Velocity Variations

open access: yesRemote Sensing, 2021
Previous studies examining the relationship between the groundwater table and seismic velocities have been guided by empirical relationships only. Here, we develop a physics-based model relating fluctuations in groundwater table and pore pressure with ...
Eldert Fokker   +3 more
doaj   +1 more source

Application of Seismic Interferometry by Multidimensional Deconvolution to Earthquake Data Recorded in Malargüe, Argentina

open access: yesRemote Sensing, 2021
Seismic interferometry (SI) refers to the principle of generating new seismic responses using crosscorrelations of existing wavefield recordings. In this study, we report on the use of a specific interferometric approach, called seismic interferometry by
Faezeh Shirmohammadi   +3 more
doaj   +1 more source

Seismic Interferometry from Correlated Noise Sources

open access: yesRemote Sensing, 2021
It is a well-established principle that cross-correlating seismic observations at different receiver locations can yield estimates of band-limited inter-receiver Green’s functions.
Daniella Ayala-Garcia   +2 more
doaj   +1 more source

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