On the detectability of internal waves by an imaging lidar
On the detectability of internal waves by an imaging lidar
The first results of a multisensor airborne survey conducted off the western Iberian Coast are presented (including visible, lidar, and infrared imagery) and reveal the presence of internal solitary waves (ISWs) propagating into the nearshore region. For the first time, two-dimensional lidar imagery is shown to detect the presence of ISWs, and the results are interpreted in a more comprehensive framework provided by the remaining instrumentation. Sea surface roughness patterns, resulting from the ISWs, are found to be imaged in the lidar data, where specular reflection causes slicks to appear as areas of significantly reduced backscatter. Moreover, the lidar data reveal an unprecedented view into the ISW surface and subsurface structures. Possible interpretations are discussed based on the accumulation of surfactants and air bubble entrainment at the leading edge of the ISWs (where maximum convergence occurs).
3429-3434
Magalhaes, J.M.
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da Silva, J.C.B.
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Batista, M.
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Gostiaux, L.
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Gerkema, T.
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New, A.L.
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Jeans, D.R.G.
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16 July 2013
Magalhaes, J.M.
6697555b-9ff9-4411-9ace-51e28d67c9b1
da Silva, J.C.B.
f0299437-57df-41b7-a0fd-520aa8d0a319
Batista, M.
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Gostiaux, L.
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Gerkema, T.
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New, A.L.
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Jeans, D.R.G.
52fbfdef-805a-471e-9a00-8048faf3d165
Magalhaes, J.M., da Silva, J.C.B., Batista, M., Gostiaux, L., Gerkema, T., New, A.L. and Jeans, D.R.G.
(2013)
On the detectability of internal waves by an imaging lidar.
Geophysical Research Letters, 40 (13), .
(doi:10.1002/grl.50669).
Abstract
The first results of a multisensor airborne survey conducted off the western Iberian Coast are presented (including visible, lidar, and infrared imagery) and reveal the presence of internal solitary waves (ISWs) propagating into the nearshore region. For the first time, two-dimensional lidar imagery is shown to detect the presence of ISWs, and the results are interpreted in a more comprehensive framework provided by the remaining instrumentation. Sea surface roughness patterns, resulting from the ISWs, are found to be imaged in the lidar data, where specular reflection causes slicks to appear as areas of significantly reduced backscatter. Moreover, the lidar data reveal an unprecedented view into the ISW surface and subsurface structures. Possible interpretations are discussed based on the accumulation of surfactants and air bubble entrainment at the leading edge of the ISWs (where maximum convergence occurs).
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Published date: 16 July 2013
Organisations:
Marine Systems Modelling
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Local EPrints ID: 362883
URI: http://eprints.soton.ac.uk/id/eprint/362883
ISSN: 0094-8276
PURE UUID: 2056abea-4272-4eb5-a4fd-7577df541b9f
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Date deposited: 07 Mar 2014 15:36
Last modified: 14 Mar 2024 16:15
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Author:
J.M. Magalhaes
Author:
J.C.B. da Silva
Author:
M. Batista
Author:
L. Gostiaux
Author:
T. Gerkema
Author:
A.L. New
Author:
D.R.G. Jeans
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