Large amplitude internal wave evolution studied by marine radar

B. Lund, H. C. Graber, J. Xue, R. Romeiser, E. L. Shroyer, J. N. Moum

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

Abstract

This paper evaluates marine X-band radar's capability to retrieve interior ocean properties from internal wave (IW) sea surface signatures. In particular, we study the link between the wave-induced backscatter intensity modulation and the IW amplitude as well as the surface velocity convergence (and divergence). The radar measurements were complemented by shipborne ADCP and microstructure profiler measurements. This study's focus lies on data that were collected during the 12-hour tracking of a particularly energetic wave, with peak amplitudes above 20 m. Results indicate that hydrodynamic surface roughness modulation is the dominant backscatter mechanism. In addition, we show that the IW-induced radar backscatter intensity modulation correlates with both peak surface velocity gradients and IW amplitudes.

Original languageEnglish (US)
Title of host publication2013 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013 - Proceedings
Pages2424-2427
Number of pages4
DOIs
StatePublished - Dec 1 2013
Event2013 33rd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013 - Melbourne, VIC, Australia
Duration: Jul 21 2013Jul 26 2013

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)

Other

Other2013 33rd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013
CountryAustralia
CityMelbourne, VIC
Period7/21/137/26/13

Keywords

  • Marine radar
  • internal waves
  • sea surface signatures
  • signal analysis

ASJC Scopus subject areas

  • Computer Science Applications
  • Earth and Planetary Sciences(all)

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