東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Estimating geoacoustic parameters of...

R. Matthews, Marie-Noel.

Linked to FindBook

Google Book

Amazon

博客來

Estimating geoacoustic parameters of gassy sediment using low-frequency sound in St. Margaret's Bay, Nova Scotia.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Estimating geoacoustic parameters of gassy sediment using low-frequency sound in St. Margaret's Bay, Nova Scotia./
Author:	R. Matthews, Marie-Noel.
Description:	126 p.
Notes:	Source: Masters Abstracts International, Volume: 48-06, page: 3542.
Contained By:	Masters Abstracts International48-06.
Subject:	Biology, Oceanography. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MR63573
ISBN:	9780494635735

Estimating geoacoustic parameters of gassy sediment using low-frequency sound in St. Margaret's Bay, Nova Scotia.
R. Matthews, Marie-Noel.

Estimating geoacoustic parameters of gassy sediment using low-frequency sound in St. Margaret's Bay, Nova Scotia. - 126 p.

Source: Masters Abstracts International, Volume: 48-06, page: 3542.

Thesis (M.Sc.)--Dalhousie University (Canada), 2010.

Shallow gassy sediments are found in marine environments allover the world. The prediction of their geoacoustic properties requires accurate information about the bubble size distribution and concentration, but the direct measurement of these parameters requires expensive equipment. The main objective of this study was to estimate the geoacoustic parameter values of the gassy sediment layer found in St. Margaret's Bay, through the Bayesian inversion of a low-frequency underwater acoustic signal, a scheme that does not rely on prior knowledge of the sediment type or properties. Inversion of simulated data sets showed that the method can distinguish between a gassy and non-gassy seabed, as well as reasonably estimate the geoacoustic properties of the gassy sediment layer. The inversion of the field data showed that the method can provide an initial appraisal of the geoacoustic properties of gassy sediments, without the use of expensive pressure cores or in situ measurements.

ISBN: 9780494635735Subjects--Topical Terms:

783691
Biology, Oceanography.

Estimating geoacoustic parameters of gassy sediment using low-frequency sound in St. Margaret's Bay, Nova Scotia.
LDR:01833nam 2200265 4500 001 1404496
005 20111205104823.5
008 130515s2010 ||||||||||||||||| ||eng d
020 $a 9780494635735
035 $a (UMI)AAIMR63573
035 $a AAIMR63573
040 $a UMI $c UMI
100 1 $a R. Matthews, Marie-Noel. $3 1683822
245 1 0 $a Estimating geoacoustic parameters of gassy sediment using low-frequency sound in St. Margaret's Bay, Nova Scotia.
300 $a 126 p.
500 $a Source: Masters Abstracts International, Volume: 48-06, page: 3542.
502 $a Thesis (M.Sc.)--Dalhousie University (Canada), 2010.
520 $a Shallow gassy sediments are found in marine environments allover the world. The prediction of their geoacoustic properties requires accurate information about the bubble size distribution and concentration, but the direct measurement of these parameters requires expensive equipment. The main objective of this study was to estimate the geoacoustic parameter values of the gassy sediment layer found in St. Margaret's Bay, through the Bayesian inversion of a low-frequency underwater acoustic signal, a scheme that does not rely on prior knowledge of the sediment type or properties. Inversion of simulated data sets showed that the method can distinguish between a gassy and non-gassy seabed, as well as reasonably estimate the geoacoustic properties of the gassy sediment layer. The inversion of the field data showed that the method can provide an initial appraisal of the geoacoustic properties of gassy sediments, without the use of expensive pressure cores or in situ measurements.
590 $a School code: 0328.
650 4 $a Biology, Oceanography. $3 783691
650 4 $a Marine Geology. $3 1674685
650 4 $a Sedimentary Geology. $3 1674727
690 $a 0416
690 $a 0556
690 $a 0594
710 2 $a Dalhousie University (Canada). $3 1017625
773 0 $t Masters Abstracts International $g 48-06.
790 $a 0328
791 $a M.Sc.
792 $a 2010
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MR63573