Direct measurement of ocean waves velocity field from a single SPOT-5 dataset
Abstract
We present a method based on space-borne optical imagery from the SPOT5 satellite to directly measure the phase velocity fields of ocean waves. The panchromatic and multispectral scenes acquired by SPOT5 the same day on the same area are not strictly superimposable due to the different locations of the CCDs (Charged Coupled Device) in the focal plane of the instrument. In this manuscript, we propose a method that exploits the temporal lag that exists between the panchromatic and multispectral scenes to measure the ocean wave velocity fields. We firstly discuss the principle and the methodology. Then, we apply it offshore La Reunion Island. Finally, we compare and discuss the results against a swell propagation model. Our method is proven reliable and can be immediately extended to other push-broom sensors.
Additional Information
© 2012 Elsevier Inc. Received 31 May 2011. Revised 24 November 2011. Accepted 22 December 2011. Available online 28 January 2012. We thank the Kalideos team (CNES) for providing the SPOT5 dataset. Discussions with Alain Giros improved the manuscript. We are thankful to Nadia Khezami for her earlier inputs to this study. MdM, JT, DR thank BRGM Research Direction for supporting the study. SL was partly supported by the Keck Institute for Space Study and by the Gordon and Betty Moore Foundation.Additional details
- Eprint ID
- 30076
- DOI
- 10.1016/j.rse.2011.12.014
- Resolver ID
- CaltechAUTHORS:20120413-110959136
- BRGM Research Direction
- Keck Institute for Space Study (KISS)
- Gordon and Betty Moore Foundation
- Created
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2012-04-17Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field