@InProceedings{SilvaMBGCLMLMB:2015:EfNoEq,
author = "Silva, Jos{\'e} Carlos B. da and Magalh{\~a}es, Jorge Manuel and
Buijsman, Maarten Cornelis and Garcia, Carlos Eira and Calil,
Paulo Henrique and Lorenzzetti, Jo{\~a}o Ant{\^o}nio and Macedo,
Carina Regina de and Lentini, Carlos Alessandre Domingos and
Miranda, Fernando Pellon de and Beisl, Carlos Henrique",
affiliation = "{} and {} and {} and {} and {} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "The Effect of the North Equatorial Counter Current on the
Generation and Propagation of Internal Solitary Waves near the
Amazon River shelf as observed in SAR imagery",
booktitle = "Anais...",
year = "2015",
editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz
Eduardo Oliveira e Cruz de",
pages = "1929--1936",
organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 17. (SBSR)",
publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
address = "S{\~a}o Jos{\'e} dos Campos",
abstract = "The Brazilian continental shelf break in the tropical Atlantic
Ocean off the Amazon River mouth is amongst the most energetic
regions in the world for generation of internal tides (Baines,
1982). Since the early 1980s there have been in situ observations
of Internal Solitary Waves (ISWs) near the North Equatorial
Counter Current (NECC) off the Brazilian continental shelf, where
localized surface velocity pulses of up to 2 m/s have been
documented (e.g. Brandt et al., 2002). Despite these early
efforts, the region remained largely unexplored until recently.
Here we present a first account of the coherence crest-lengths,
propagation characteristics and seasonal variability of ISWs on
and off the shelf, based on Synthetic Aperture Radar (SAR) images.
Available ENVISAT ASAR scenes (29 in total), and additional
ERS-1/2 SAR, TerraSAR-X and RADARSAT images of the region of the
tropical Atlantic Ocean comprising the geographic coordinates
[40°- 50° W, 0°- 8° N] have been examined. The SAR image analysis
revealed the following main results: 1) The ISW signatures, whose
coherence crest-lengths can exceed 200 km, are first detected near
the southern edge of the countercurrent and intensify on the
northern edge of the NECC; 2) In October, there is a strong
refraction/ advection of ISWs towards the east, as they enter the
influence of the NECC (in between 4° and 5° N); 3) Some on-shelf
regions are prone to intense ISW signatures in the SAR, which are
believed to be associated with intricate bottom-topography.",
conference-location = "Jo{\~a}o Pessoa",
conference-year = "25-29 abr. 2015",
isbn = "978-85-17-0076-8",
label = "383",
language = "en",
organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
ibi = "8JMKD3MGP6W34M/3JM49F2",
url = "http://urlib.net/ibi/8JMKD3MGP6W34M/3JM49F2",
targetfile = "p0383.pdf",
type = "Oceanografia",
urlaccessdate = "27 abr. 2024"
}