Zobrazeno 1 - 10
of 388
pro vyhledávání: '"N. A. Chapman"'
Autor:
M. Riedel, M. Scherwath, M. Römer, C. K. Paull, E. M. Lundsten, D. Caress, P. G. Brewer, J. W. Pohlman, L. L. Lapham, N. R. Chapman, M. J. Whiticar, G. D. Spence, R. J. Enkin, K. Douglas
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
Barkley Canyon is one of the few known sites worldwide with the occurrence of thermogenic gas seepage and formation of structure-II and structure-H gas hydrate mounds on the seafloor. This site is the location of continuous seafloor monitoring as par
Externí odkaz:
https://doaj.org/article/219d4027962a4d00814bd6f4e93a6155
Publikováno v:
IEEE Journal of Oceanic Engineering. 46:261-282
Over the past 25 years, there has been significant research activity in development and application of methods for inverting acoustical field data to estimate parameters of geoacoustic models of the ocean bottom. Although the performance of various g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3f32119bf6432aae320f43a08015760
https://doi.org/10.1109/joe.2019.2960879
https://doi.org/10.1109/joe.2019.2960879
Autor:
Er Chang Shang, N. Ross Chapman
Publikováno v:
Journal of Theoretical and Computational Acoustics. 29
This paper reviews the progress in geoacoustic inversion over the past several decades. The review is separated into two parts. The first part reviews developments in model-based inversion methods that have led to present day usage of Bayesian infere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4672502fbbb97aead8254f4437cc9b90
https://doi.org/10.1142/s259172852130004x
https://doi.org/10.1142/s259172852130004x
Publikováno v:
Gayana, Vol 68, Iss 2, Pp 108-114 (2004)
Estimation of geoacoustic models of the sea bed is an underlying research issue in understanding acoustic propagation in shallow water environments where the propagation is generally bottom limited. Inversion methods based on matched field processing
Externí odkaz:
https://doaj.org/article/b9bd2c74610f48c8a7fd7d2865aafa89
Publikováno v:
The Journal of the Acoustical Society of America. 145:EL243-EL249
In the ocean waveguide, the sediment sound speed has a simple relationship with the group speed of the highest order mode that propagates close to the critical angle. The paper shows that robust estimates of the sound speed are obtained from estimate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb1ea84d9da6aa6f8b0a52a15893238b
https://doi.org/10.1121/1.5094667
https://doi.org/10.1121/1.5094667
Publikováno v:
Journal of Lipid Research, Vol 37, Iss 12, Pp 2569-2585 (1996)
Lp[a] concentrations in nmol/L and apo[a] size isoforms, expressed in terms of the relative number of apo[a] kringle 4 (K4) repeats, were determined in 3959 whites and blacks from four U.S. communities. Plasma Lp[a] analyses were performed by an ELIS
Externí odkaz:
https://doaj.org/article/bba4367bbfda4d91ac556195fe92e176
Autor:
N. Ross Chapman
Publikováno v:
Journal of Marine Science and Engineering, Vol 4, Iss 3, p 61 (2016)
This paper focuses on acoustic reflectivity of the ocean bottom, and describes inversion of reflection data from an experiment designed to study the physical properties and structure of the ocean bottom. The formalism of Bayesian inference is reviewe
Externí odkaz:
https://doaj.org/article/32472307f5684798a3f637b7951bf290
Publikováno v:
IEEE Journal of Oceanic Engineering. 42:632-638
In this paper, broadband airgun data from the 1995 Shallow Water Acoustics in Random Media (SWARM'95) experiment are analyzed to study the influence of internal waves on sound propagation and modal behavior, and the subsequent effects on geoacoustic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1cefb4c89e706e9483017bb822daf02f
https://doi.org/10.1109/joe.2016.2611763
https://doi.org/10.1109/joe.2016.2611763
Publikováno v:
IEEE Journal of Oceanic Engineering
IEEE Journal of Oceanic Engineering, 2019, ⟨10.1109/JOE.2019.2896389⟩
IEEE Journal of Oceanic Engineering, 2019, ⟨10.1109/JOE.2019.2896389⟩
International audience; This paper presents single receiver geoacoustic inversion of two independent data sets recorded during the 2017 seabed characterization experiment on the New England Mud Patch. In the experimental area, the water depth is arou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f98f881be6e8b4be4b1c5833ec053aaa
https://hal.archives-ouvertes.fr/hal-02434613
https://hal.archives-ouvertes.fr/hal-02434613
Publikováno v:
IEEE Journal of Oceanic Engineering. 41:1035-1044
This paper develops a Bayesian approach to the image source method (ISM) for efficient inversion of seabed reflection data to estimate geoacoustic parameters and uncertainties. Based on the representation of layered seafloor-reflected signals by imag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9e18b54c4045356298495352797d32e
https://doi.org/10.1109/joe.2016.2516421
https://doi.org/10.1109/joe.2016.2516421