Energy transfer between hydrodynamically modulated long and short ocean waves by interaction with the wind field

Roland Romeiser, Susanne Ufermann, Sabine Stolte

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Radar signatures of spatially varying surface currents, such as found over underwater bottom topography in tidal waters, are often underestimated by theoretical models. After the development of advanced radar backscattering models which account for contributions of the entire ocean wave spectrum, this is usually attributed to shortcomings of existing wave-current interaction theories. In this paper we discuss results of a comprehensive analysis of radar images and in-situ wave and wind data that were acquired during the C-STAR experiment over underwater bottom topography in the North Sea. As expected, measured radar signatures and intensity variations of short waves are underestimated by a conventional model. Clear improvement is obtained after introducing a modified equilibrium wave spectrum and spatial wind stress variations as given by buoy data. Our results suggest that a surface roughness - wind stress feedback mechanism exists, which leads to a coupling between intensity variations of short ripple waves and longer waves via interaction with the wind field.

Original languageEnglish (US)
Title of host publicationInternational Geoscience and Remote Sensing Symposium (IGARSS)
PublisherIEEE
Pages965-967
Number of pages3
Volume2
StatePublished - 1999
Externally publishedYes
EventProceedings of the 1999 IEEE International Geoscience and Remote Sensing Symposium (IGARSS'99) 'Remote Sensing of the Systems Earth - A Challenge for the 21st Century' - Hamburg, Ger
Duration: Jun 28 1999Jul 2 1999

Other

OtherProceedings of the 1999 IEEE International Geoscience and Remote Sensing Symposium (IGARSS'99) 'Remote Sensing of the Systems Earth - A Challenge for the 21st Century'
CityHamburg, Ger
Period6/28/997/2/99

Fingerprint

ocean wave
Water waves
wind field
Energy transfer
radar
bottom topography
wave spectrum
Radar
wind stress
Wind stress
energy
wave-current interaction
data buoy
Topography
feedback mechanism
ripple
surface roughness
Backscattering
Surface roughness
Feedback

ASJC Scopus subject areas

  • Software
  • Geology

Cite this

Romeiser, R., Ufermann, S., & Stolte, S. (1999). Energy transfer between hydrodynamically modulated long and short ocean waves by interaction with the wind field. In International Geoscience and Remote Sensing Symposium (IGARSS) (Vol. 2, pp. 965-967). IEEE.

Energy transfer between hydrodynamically modulated long and short ocean waves by interaction with the wind field. / Romeiser, Roland; Ufermann, Susanne; Stolte, Sabine.

International Geoscience and Remote Sensing Symposium (IGARSS). Vol. 2 IEEE, 1999. p. 965-967.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Romeiser, R, Ufermann, S & Stolte, S 1999, Energy transfer between hydrodynamically modulated long and short ocean waves by interaction with the wind field. in International Geoscience and Remote Sensing Symposium (IGARSS). vol. 2, IEEE, pp. 965-967, Proceedings of the 1999 IEEE International Geoscience and Remote Sensing Symposium (IGARSS'99) 'Remote Sensing of the Systems Earth - A Challenge for the 21st Century', Hamburg, Ger, 6/28/99.
Romeiser R, Ufermann S, Stolte S. Energy transfer between hydrodynamically modulated long and short ocean waves by interaction with the wind field. In International Geoscience and Remote Sensing Symposium (IGARSS). Vol. 2. IEEE. 1999. p. 965-967
Romeiser, Roland ; Ufermann, Susanne ; Stolte, Sabine. / Energy transfer between hydrodynamically modulated long and short ocean waves by interaction with the wind field. International Geoscience and Remote Sensing Symposium (IGARSS). Vol. 2 IEEE, 1999. pp. 965-967
@inproceedings{43395fe7378d4f41bd6e84141ddb780b,
title = "Energy transfer between hydrodynamically modulated long and short ocean waves by interaction with the wind field",
abstract = "Radar signatures of spatially varying surface currents, such as found over underwater bottom topography in tidal waters, are often underestimated by theoretical models. After the development of advanced radar backscattering models which account for contributions of the entire ocean wave spectrum, this is usually attributed to shortcomings of existing wave-current interaction theories. In this paper we discuss results of a comprehensive analysis of radar images and in-situ wave and wind data that were acquired during the C-STAR experiment over underwater bottom topography in the North Sea. As expected, measured radar signatures and intensity variations of short waves are underestimated by a conventional model. Clear improvement is obtained after introducing a modified equilibrium wave spectrum and spatial wind stress variations as given by buoy data. Our results suggest that a surface roughness - wind stress feedback mechanism exists, which leads to a coupling between intensity variations of short ripple waves and longer waves via interaction with the wind field.",
author = "Roland Romeiser and Susanne Ufermann and Sabine Stolte",
year = "1999",
language = "English (US)",
volume = "2",
pages = "965--967",
booktitle = "International Geoscience and Remote Sensing Symposium (IGARSS)",
publisher = "IEEE",

}

TY - GEN

T1 - Energy transfer between hydrodynamically modulated long and short ocean waves by interaction with the wind field

AU - Romeiser, Roland

AU - Ufermann, Susanne

AU - Stolte, Sabine

PY - 1999

Y1 - 1999

N2 - Radar signatures of spatially varying surface currents, such as found over underwater bottom topography in tidal waters, are often underestimated by theoretical models. After the development of advanced radar backscattering models which account for contributions of the entire ocean wave spectrum, this is usually attributed to shortcomings of existing wave-current interaction theories. In this paper we discuss results of a comprehensive analysis of radar images and in-situ wave and wind data that were acquired during the C-STAR experiment over underwater bottom topography in the North Sea. As expected, measured radar signatures and intensity variations of short waves are underestimated by a conventional model. Clear improvement is obtained after introducing a modified equilibrium wave spectrum and spatial wind stress variations as given by buoy data. Our results suggest that a surface roughness - wind stress feedback mechanism exists, which leads to a coupling between intensity variations of short ripple waves and longer waves via interaction with the wind field.

AB - Radar signatures of spatially varying surface currents, such as found over underwater bottom topography in tidal waters, are often underestimated by theoretical models. After the development of advanced radar backscattering models which account for contributions of the entire ocean wave spectrum, this is usually attributed to shortcomings of existing wave-current interaction theories. In this paper we discuss results of a comprehensive analysis of radar images and in-situ wave and wind data that were acquired during the C-STAR experiment over underwater bottom topography in the North Sea. As expected, measured radar signatures and intensity variations of short waves are underestimated by a conventional model. Clear improvement is obtained after introducing a modified equilibrium wave spectrum and spatial wind stress variations as given by buoy data. Our results suggest that a surface roughness - wind stress feedback mechanism exists, which leads to a coupling between intensity variations of short ripple waves and longer waves via interaction with the wind field.

UR - http://www.scopus.com/inward/record.url?scp=0033319858&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033319858&partnerID=8YFLogxK

M3 - Conference contribution

VL - 2

SP - 965

EP - 967

BT - International Geoscience and Remote Sensing Symposium (IGARSS)

PB - IEEE

ER -