Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Roger W. Meredith"'
Publikováno v:
Continental Shelf Research. 104:92-103
Lateral variations in mass properties of sediments (grain density, porosity, and composition) occur at many spatial scales in all types of sediments. Sediment bulk properties determine elasticity and density and, therefore, the degree of acoustic res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8ecc39d9924aae5eea9bec4ad54797f
https://doi.org/10.1016/j.csr.2015.05.012
https://doi.org/10.1016/j.csr.2015.05.012
Publikováno v:
The Journal of the Acoustical Society of America. 142:2692-2692
The physical and dynamic properties of marine mud are a function of the interaction of clay fabric, organic matter (OM), and seawater physico-chemistry, and, when present, free gas. OM is the focus of this presentation and is a determinant of several
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37863a1e890236ebc9d09554eb56365f
https://doi.org/10.1121/1.5014819
https://doi.org/10.1121/1.5014819
Autor:
Samuel M. Nagle, Roger W. Meredith
Publikováno v:
The Journal of the Acoustical Society of America. 106:828-836
Signal coherence is an important environmental predictor for sonar performance and is often difficult to estimate. This paper examines different methods for estimating signal coherence from data not amenable to coherence estimation. Methods are compa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93253f775a89975e219de4d0d01628a6
https://doi.org/10.1121/1.428050
https://doi.org/10.1121/1.428050
Publikováno v:
2012 Oceans.
This paper presents an automated process for finding mine-like contacts by incorporating sequential mathematical processes: textural analysis, polygon discrimination, and dimensional filtering. These processes define a methodology that requires a min
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::816ebf7817ff1213f76cadff49ec1ff3
https://doi.org/10.1109/oceans.2012.6404819
https://doi.org/10.1109/oceans.2012.6404819
Publikováno v:
OCEANS 2008.
Categorizing historical sound speed profiles stems from the desire to map spatial and temporal variability. Sound speed variability correlates with environmental phenomena and is an indicator of changes in sonar performance. Sound speed maps will ass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ce90008e1b129fef958f6e9de2b9535
https://doi.org/10.1109/oceans.2008.5151806
https://doi.org/10.1109/oceans.2008.5151806
Autor:
Roger W. Meredith
Publikováno v:
The Journal of the Acoustical Society of America. 88:1003-1010
The Arctic is a unique region acoustically, dominated by the under ice canopy. The ice varies seasonally in coverage, thickness, and roughness causing varying degrees of acoustic spatial and temporal variability. Horizontal coherence from explosive a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::978c3c1db8aa44f4419d794ec9c96f09
https://doi.org/10.1121/1.399850
https://doi.org/10.1121/1.399850
Publikováno v:
AIP Conference Proceedings.
During June 2003, the Naval Research Laboratory conducted a series of acoustic propagation experiments to measure both high (20 to 150 kHz) and low (1 to 10 kHz) frequency spatial and temporal coherence in very shallow water. Environmental data colle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e0523a2d45d5af39963db2195a89d27
https://doi.org/10.1063/1.1843034
https://doi.org/10.1063/1.1843034
Autor:
Timothy H. Ruppel, Ralph R. Goodman, Marcia A. Wilson, Roger W. Meredith, Steve Stanic, E. Kennedy, Guy V. Norton
Publikováno v:
AIP Conference Proceedings.
Initial results of broadband (1 to 10 kHz) spatial coherence measurements taken during the June 2003 shallow‐water (8 m) propagation experiments will be presented. The results will show spatial coherence estimates over a 12 m long horizontal array
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c1bbc16af6c1cad541929a7ec7621ce
https://doi.org/10.1063/1.1843035
https://doi.org/10.1063/1.1843035
Autor:
Howard Chandler, E. Kennedy, Roger W. Meredith, Robert A. Fisher, Dexter Malley, Ralph R. Goodman, Steve Stanic, Richard Ray, Bob Brown
Publikováno v:
AIP Conference Proceedings.
In June 2003 a series of acoustic propagation experiments were conducted off the coast of Panama City, Florida. The experiments were designed to measure and provide an understand of signal phase and amplitude fluctuations, and signal spatial and temp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9917b7f40a1943791a0b2c22f292f02e
https://doi.org/10.1063/1.1843033
https://doi.org/10.1063/1.1843033
Autor:
Robert S. Brown, E. Ted Kennedy, Roger W. Meredith, Dexter Malley, Robert A. Fisher, Steve Stanic
Publikováno v:
AIP Conference Proceedings.
This paper is part of a series of papers describing acoustic coherence and fluctuations measurements made by the Naval Research Laboratory in the Gulf of Mexico near Panama City Beach, FL during June 2003. This paper presents low frequency (1–10 kH
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e3370ed071a7ef5480c4d5d35d44e6e
https://doi.org/10.1063/1.1843037
https://doi.org/10.1063/1.1843037