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008250807e199412  bccad   obt  f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
043 |an-cn---
0861 |aDR52-11/21-1994E-PDF
1001 |aBrooke, Gary H.,‏ |d1950-‏ |eauthor.
24510|aInternal interface conditions for the finite-difference PE applications to layered acoustic media / |cby Gary H. Brooke and Philip M. Wort.
264 1|aVictoria, B.C. : |bDefence Research Establishment Pacific = Centre de recherches pour la défense pacifique : |bResearch and Development Branch, Department of National Defence, |cDecember 1994.
300 |a1 online resource (i, 31 pages, 3 unnumbered pages) : |billustrations, charts.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aTechnical memorandum ; |v94-145
500 |aDigitized edition from print [produced by Defence Research and Development Canada].
504 |aIncludes bibliographical references (pages 30-31).
5203 |a"The traditional one-way parabolic equation (PE) formulation for range-dependent layered acoustic media is modified to include effects associated with interfaces internal to the computational grid. Both first- and second-order approximations are derived which effectively translate the effects of internal boundary conditions onto nearby grid points. [...]. Consideration of second-order conditions also allows sloping internal interfaces to be accommodated. Numerical results obtained for standard test cases are used to demonstrate the application of the analysis. In shallow water, particularly at ranges greater than 20 km, there is an indication that precise definition of the interface depth is required in order to minimize errors that could negatively affect matched field processing applications. Alternatively, imprecision in interface location to within one computational grid width does not significantly affect the field prediction in oceans with water depths greater than 500 m or so"--Abstract (page i).
650 0|aUnderwater acoustics|zCanada.
650 6|aAcoustique sous-marine|zCanada.
7102 |aDefence Research Establishment Pacific, |eissuing body.
7101 |aCanada. |bDepartment of National Defence. |bResearch and Development Branch, |eissuing body.
830#0|aTechnical memorandum (Defence Research Establishment Pacific)|v94-145.|w(CaOODSP)9.936067
85640|qPDF|s306 KB|uhttps://publications.gc.ca/collections/collection_2025/rddc-drdc/DR52-11-21-1994-eng.pdf