Results 161 to 170 of about 3,070 (215)

Seismic interferometry—turning noise into signal

The Leading Edge, 2006
Turning noise into useful data—every geophysicist's dream? And now it seems possible. The field of seismic interferometry has at its foundation a shift in the way we think about the parts of the signal that are currently filtered out of most analyses—complicated seismic codas (the multiply scattered parts of seismic waveforms) and background noise ...
Curtis, A. (author), Gerstoft, P. (author), Sato, H. (author), Snieder, R. (author), Wapenaar, C.P.A. (author)   +4 more
openaire   +5 more sources

Groundwater Level Monitoring Tests with Seismic Interferometry

NSG2020 26th European Meeting of Environmental and Engineering Geophysics, 2020
Summary The objective of this work is to evaluate whether the seismic passive interferometry technique can be used to monitor undeground water variations in both unconfined and confined aquifers that present different hydrogeological characteristics. We collected ambient vibrations in two different water catchment fields where the water level has been ...
Taruselli M., Aguzzoli A., Zanzi L., Arosio D.   +3 more
openaire   +2 more sources

Seismic interferometry and non-linear tomography [PDF]

, 2015
Seismic records contain information that allows geoscientists to make inferences about the structure and properties of the Earth’s interior. Traditionally, seismic imaging and tomography methods require wavefields to be generated and recorded by identifiable sources and receivers, and use these directly-recorded signals to create models of the Earth’s ...
Galetti, Erica
openaire   +3 more sources

Non-physical energy in seismic interferometry [PDF]

, 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’s subsurface.
King, Simon James
core   +3 more sources

Seismic interferometry and ambient noise tomography in the British Isles

Proceedings of the Geologists Association, 2012
Traditional methods of imaging the Earth's subsurface using seismic waves require an identifiable, impulsive source of seismic energy, for example an earthquake or explosive source.
Andrew Curtis, Brian Baptie, Erica Galetti   +2 more
exaly   +2 more sources

Tutorial on seismic interferometry: Part 1 — Basic principles and applications

Geophysics, 2010
Seismic interferometry involves the crosscorrelation of responses at different receivers to obtain the Green's function between these receivers. For the simple situation of an impulsive plane wave propagating along the x-axis, the crosscorrelation of the
Kees Wapenaar, Deyan Draganov, Roel Snieder   +2 more
exaly   +3 more sources

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Seismic interferometry by cross‐correlation or deconvolution?

SEG Technical Program Expanded Abstracts 2008, 2008
We discuss Rodney Calvert's work on the Virtual Source method in the context of seismic interferometry. Moreover, we present a systematic analysis of seismic interferometry by cross-correlation versus multi-dimensional deconvolution and we discuss applications of both approaches.
Wapenaar, Kees, Van Der Neut, Joost, Ruigrok, Elmer, Draganov, Deyan, Slob, Evert, Thorbecke, Jan, Snieder, Roel   +6 more
openaire   +2 more sources

Laser interferometry based seismic sensor

SPIE Proceedings, 2003
Laser interferometry is one of the most sensitive and versatile techniques for small relative displacements measurement. For these reasons it is used or it is being introduced in many different fields of research. One of its possible applications is seismic activity monitoring, obtained by fixing the mirrors of an interferometer to the ground. In order
BARONE, Fabrizio, DE ROSA R, MILANO L, QIPIANI K.   +3 more
openaire   +2 more sources

Effect of Intrinsic Losses on Seismic Interferometry

70th EAGE Conference and Exhibition incorporating SPE EUROPEC 2008, 2008
Seismic interferometry (SI) is the process of generating new seismic traces from the cross-correlation of existing traces. One of the starting assumptions for deriving the SI representation equations is that of a lossless medium. In practice, this condition is not always met.
Draganov, D., Ghose, R., Ruigrok, E., Thorbecke, J., Wapenaar, K.   +4 more
openaire   +2 more sources

Applications of seismic interferometry to seismic field data

The Journal of the Acoustical Society of America, 2007
In seismic interferometry one extracts the Green’s function of a system from fluctuations in the system. This makes it possible to retrieve the waves that propagate between receivers, as if one of the receivers acts as a source. Examples are presented of this principle to field data.
Roel Snieder, Kurang Mehta, Masatoshi Miyazawa, Ivan Vasconcelos, Jon Sheiman, Rodney Calvert, Andrey Bakulin, Anupama Venkataraman   +7 more
openaire   +1 more source