Seasonal Variability Of Mode-1 And Mode-2 Internal Solitary Waves Off The Amazon Shelf Observed From Modis/Terra Sunglint Images

Macedo, Carina Regina de; Koch-Larrouy, Ariane; Silva, José Carlos B. da; Lentini, 3 Carlos Alessandre D.; Magalhães,  Jorge Manuel; Tran, Trung Kien; Rosa, Marcelo Caetano B.; Vantrepotte, Vincent

http://hdl.handle.net/10400.26/59074

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Authors

Macedo, Carina Regina de

Koch-Larrouy, Ariane

Silva, José Carlos B. da

Lentini, 3 Carlos Alessandre D.

Magalhães, Jorge Manuel

Tran, Trung Kien

Rosa, Marcelo Caetano B.

Vantrepotte, Vincent

Abstract(s)

This study focuses on the Amazon ISWs occurrence, their velocity/wavelength, and variability at seasonal cycles. The analysis is based on a data set composed of 71 MODIS/TERRA images, where more than 250 internal solitary wave (ISW) signatures were identified in the sun glint area. ISWs packets separated by typical mode-1 and mode-2 internal tides (ITs) wavelengths have been identified and mapped coming from sites A, and B. In area B, the mode-1 and mode-2 ISWs seem to have lower wavelengths than the ones in area A. Mode-1 ISWs from site A showed higher wave velocity/wavelength during the boreal summer/fall, with higher diversity in terms of propagation velocities. Calculations of the IT velocities using the Taylor-Goldstein equation supported our results of shorter-scale ISWs associated with mode-2 IT wavelengths in the study area and additionally into the ISW/IT seasonal variability.

Keywords

Internal Solitary waves Internal tides MODIS/TERRA Amazon shelf seasonal variability

URI

http://hdl.handle.net/10400.26/59074

Citation

Regina, Carina, et al. (2023). “Seasonal Variability Of Mode-1 And Mode-2 Internal Solitary Waves Off The Amazon Shelf Observed From Modis/Terra Sunglint Images". Anais do XX Simpósio Brasileiro de Sensoriamento Remoto. Vol. 20, p. 1342-1345.