Measurement of sound-speed gradients in deep-ocean sediments usingl_{1}deconvolution techniques

Simple item page
dc.contributor.authorChapman, N
dc.contributor.authorBarrodale, I
dc.contributor.authorZala, C
dc.date.accessioned2009-07-15T21:55:01Z
dc.date.available2009-07-15T21:55:01Z
dc.date.copyright1984en
dc.date.issued1984
dc.description©1984 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en
dc.description.abstractA method is described for measuring the sound speed and the sound-speed gradient of surficial sea floor sediment from bottom-reflected signals recorded in marine seismic experiments. The technique makes use of the ocean-bottom impulse responses that are deconvolved from the data by means of a novel curve-fitting algorithm based on thel_{1}norm (least absolute value) criterion. The algorithm constructs the impulse response by extracting spikes one at a time in a manner that causes thel_{1}error to decrease by the maximum amount possible as each spike is chosen. Thel_{1}curve-fitting approach is a completely general strategy for deconvolution, and our algorithm can be used with data obtained from any type of marine seismic source. Since our experiments have been carried out with small explosive charges, we have also developed a method for estimating the bubble-pulse wavelet directly from the recorded bottom-reflected signal. In this paper, thel_{1}algorithm is used to deconvolve impulse responses for data obtained in an experiment in the Alaskan Abyssal Plain. The sediment-sound-speed gradient determined from these results is typical of other values reported for turbidite abyssal plains where the surficial sediments are composed of unconsolidated silty deposits.en
dc.identifier.citationIEEE journal of oceanic engineering [0364-9059] Chapman yr.1984 vol.9 iss.1 pg.26 -30en
dc.identifier.issn0364-9059
dc.identifier.urihttp://hdl.handle.net/1828/1454
dc.language.isoenen
dc.publisherIEEEen
dc.subjectDeconvolution
dc.subjectSea floor
dc.subjectSeismic signal processing
dc.subjectUnderwater acoustic propagation
dc.subject.departmentDepartment of Computer Science
dc.titleMeasurement of sound-speed gradients in deep-ocean sediments usingl_{1}deconvolution techniquesen
dc.typeArticleen

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Measurement of sound-speed gradients in deep-ocean sediments using l1 deconvolution techniques.pdf
Size:
594.63 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.83 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Faculty and Staff Publications
 
University of Victoria Libraries

We acknowledge and respect the Lək̓ʷəŋən (Songhees and Esquimalt) Peoples on whose territory the university stands, and the Lək̓ʷəŋən and W̱SÁNEĆ Peoples whose historical relationships with the land continue to this day.