Results 131 to 140 of about 605,537 (174)

Event-driven Seismic Interferometry with Ambient Seismic Noise

72nd EAGE Conference and Exhibition incorporating SPE EUROPEC 2010, 2010
By cross-correlating recordings of ambient seismic noise, one can retrieve the subsurface reflection response. The quality of the retrieved reflections would depend on the qualities of the ambient noise. In a previous study, we cross-correlated ambient-noise data recorded in a desert area in North Africa and showed that we retrieved reflections.
D. Draganov, X. Campman, J. Thorbecke, A. Verdel, K. Wapenaar   +4 more
openaire   +1 more source

Bedrock detection based on seismic interferometry using ambient noise in Singapore

SEG technical program expanded abstracts, 2020
SUMMARY The city-state of Singapore principally sits on granite bedrock known as the Bukit Timah formation. The Bukit Timah gran-ite outcrops in the centre of Singapore, but it is buried below quaternary sediments known as the Old Alluvium formation in ...
E. Nilot, Y. Li, K. Lythgoe
semanticscholar   +1 more source

Body-wave Receiver-pair Seismic Interferometry

Proceedings, 2013
With seismic interferometry reflections can be retrieved between station positions. In the classical form, the reflections are retrieved by a crosscorrelation of observations and an integration over subsurface sources. For a specific dataset, however, the actual source distribution might not be sufficient to approximate the source integral.
Ruigrok, E. N., Almagro Vidal, C.
openaire   +2 more sources

Imaging the Subsurface Plumbing Complex of Steamboat Geyser and Cistern Spring With Hydrothermal Tremor Migration Using Seismic Interferometry

Journal of Geophysical Research: Solid Earth, 2020
Steamboat Geyser in Yellowstone National Park is the tallest active geyser on Earth and is believed to have hydrologic connection to Cistern Spring, a hydrothermal pool ∼100 m southwest from the geyser vent.
Sin‐Mei Wu, F. Lin, J. Farrell, William E. Keller, Erin B. White, J. Hungerford   +5 more
semanticscholar   +1 more source

Full structural dynamic response from ambient vibration of Giotto's bell tower in Firenze (Italy), using modal analysis and seismic interferometry

NDT & E international, 2019
The preservation of historical buildings mainly depends on our capacity to monitor their ageing and quickly detect potential damage. We show how the dynamic characteristics of a building (i.e., frequency, shapes mode and seismic wave velocity) can be ...
G. Lacanna, M. Ripepe, M. Coli, R. Genco, E. Marchetti   +4 more
semanticscholar   +1 more source

Drill‐bit seismic interferometry with and without pilot signals*

Geophysical Prospecting, 2008
ABSTRACTWe use different interferometry approaches to process the seismic signals generated by a drill‐bit source in one well and recorded by seismic receivers located both in a second borehole and at the surface near the source well. We compare the standard interferometry results, obtained by using the raw drill‐bit data without a pilot signal, with ...
F. Poletto, P. Corubolo, P. Comelli
openaire   +1 more source

Neural networks and SAR interferometry for the characterization of seismic events

SPIE Proceedings, 2010
Satellite SAR Interferometry (InSAR) has been already proven to be effective in the analysis of seismic events. In fact, the surface displacement field obtained by InSAR application contains useful information to define the fault geometry (such as dip and strike angles, width, length), the extension of the rupture, the distribution of slip on the ...
DEL FRATE, FABIO, Picchiani, M, SCHIAVON, GIOVANNI, Stramondo, S.   +3 more
openaire   +1 more source

Seismic interferometry by tangent‐phase correction

Geophysical Prospecting, 2014
ABSTRACTWe present a modified interferometry method based on local tangent‐phase analysis, which corrects the cross‐correlated data before summation. The approach makes it possible to synthesize virtual signals usually vanishing in the conventional seismic interferometry summation.
Flavio Poletto, Biancamaria Farina, Gualtiero Böhm, Kees Wapenaar   +3 more
openaire   +1 more source

Source‐receiver seismic interferometry

SEG Technical Program Expanded Abstracts 2009, 2009
Seismic (or more generally, wavefield) interferometry allows receivers to assume the role of sources, or vice versa. Recorded waveforms (theoretically, Green’s functions) can be constructed from new ‘virtual’ source positions at which only receivers have been physically located.
openaire   +1 more source

S-Wave velocity structure exploration of sedimentary layers using seismic interferometry on strong motion records

Exploration Geophysics, 2019
If seismic interferometry is to be applied to a strong ground motion record, the number of available records is limited, compared with the number of ambient noise records. To begin with, we investigated the characteristics of the autocorrelation function
K. Chimoto, H. Yamanaka
semanticscholar   +1 more source