A5086846094- Oceanographic and Atmospheric Processes
- Marine and coastal ecosystems
- Marine and fisheries research
- Climate variability and models
- Ocean Waves and Remote Sensing
- Oil Spill Detection and Mitigation
- Coastal and Marine Management
- Tropical and Extratropical Cyclones Research
- Atmospheric and Environmental Gas Dynamics
- Methane Hydrates and Related Phenomena
- Ocean Acidification Effects and Responses
- Remote Sensing in Agriculture
- Isotope Analysis in Ecology
- Coastal and Marine Dynamics
- Coastal wetland ecosystem dynamics
- Marine and environmental studies
- Geography and Environmental Studies
- Hydrology and Watershed Management Studies
- Geophysics and Gravity Measurements
- Marine Biology and Ecology Research
- Coral and Marine Ecosystems Studies
- Geological formations and processes
- Fish biology, ecology, and behavior
- Radioactive contamination and transfer
- Radioactivity and Radon Measurements
Universidade Federal da Bahia
2011-2024
Instituto Federal da Bahia
2024
Hospital Ana Nery
2009-2023
Secretaria do Meio Ambiente
2009-2015
Universidade Federal do Paraná
2015
Hospital Universitário da Universidade de São Paulo
2009
Universidade de São Paulo
2006
University of Miami
1999-2002
In the austral winter of 1993, during a COROAS hydrographic cruise in South Brazil Bight (SBB), an unexpected mass cold and fresh water was observed on continental shelf near 23°S. Subsequent analyses different data sets suggested that origin probably Argentine shelf, Rio de la Plata mouth. this article, 13‐year time series AVHRR Sea Surface Temperature anomalies is analyzed to investigate occurrence phenomenon other periods. The results these good correlation with Southern Oscillation Index...
Relationships between simultaneous occurrences of distinctive atmospheric easterly wave (EW) signatures that cross the south-equatorial Atlantic, intense mesoscale convective systems (lifespan > 2 hour) propagate westward over western and subsequent strong rainfall episodes (anomaly 10 mm·day −1 ) occur in eastern Northeast Brazil (ENEB) are investigated. Using a simple diagnostic analysis, twelve cases with EW lifespan ranging 3 8 days mean velocity m·s were selected documented during...
Oil spill detection and mapping (OSPM) is an extremely relevant issue from a scientific point of view due to the environmental impact on coastal marine ecosystems. In this study, we present new approach assess literature for past 50 years. sense, our study aims perform bibliometric network analysis using review application OSPM researchers trends in field science. methodological terms used Scopus base search articles literature, then tools access information reveal quantifying patterns...
A set of open-source routines capable identifying possible oil-like spills based on two random forest classifiers were developed and tested with a Sentinel-1 SAR image dataset. The first model is an ocean classifier where the labeling inputs oil spills, biological films, rain cells, low wind regions, clean sea surface, ships, terrain. second one was detector named “Radar Image Oil Spill Seeker (RIOSS)”, which classified targets. An optimized feature space to serve as input such...
Coastal ocean observing and modeling systems (coastal observatories), connected with regional global systems, improve the quality of information forecasts for effective management safe sustainable maritime activities. The public availability systematic long-term is an engine Blue Economy, boosting economic growth, employment, innovation. An overview some Brazilian initiatives presented in this paper, involving universities, private companies, federal state agencies, covering institutions...
Abstract. The Amazon shelf is a key region for intense internal tides (ITs) and nonlinear solitary wave (ISWs) generation associated with them. shows well-marked seasonal variability (from March to July, MAMJJ, from August December, ASOND) of the circulation stratification, which can both induce changes in ISW physical characteristics. description neap–spring tidal ISWs off performed first time using meaningful data set composed 140 MODIS-Terra imagery 2005 2021, where about 500 signatures...
TOPEX/Poseidon‐derived along track SHA, climatological temperature, and salinity fields were used within a two‐layer scheme to estimate the depth of 8°C isotherm in southwestern Atlantic. These monitor formation characteristics Brazil Current warm‐core anticyclonic rings shed by first meander trough after poleward excursions (BC). Results reveal that 40 BC between January 1993 October 1998. The observed lifetime ranges 1 4 months, with mean value approximately 2 months. At any given time,...
Abstract. High-resolution hydrographic observations of temperature and salinity are used to analyze the formation distribution isothermal depth (ZT), mixed (ZM) barrier layer thickness (BLT) in a section southwestern Atlantic (0°30´ N–14°00´ S; 31°24´–41°48´ W), adjacent northeastern Brazilian coast. Analyzed data consists 279 CTD casts acquired during two cruises under REVIZEE Program. One occurred late austral winter (August–October 1995) another summer (January–April 1997). Oceanic...
A 6‐year time series of sea surface temperature fields derived from NOAA polar‐orbiter AVHRR 5‐day composites is used to estimate the lifetime, size, and trajectory 43 warm‐core rings shed by Brazil Current at Southwestern Atlantic region in a consistent fashion for first time. Ring lifetimes range 11 95 days, are not bi‐modal as case Gulf Stream anticyclones. Translational speeds 4.2 27.2 km/day with mean value 13.1 km/day. After formation, mostly elliptical major radius 126 ± 50 km minor...
The Camamu Bay (CMB) is located on the narrowest shelf along South American coastline and close to formation of two major Western Boundary Currents (WBC), Brazil/North Brazil Current (BC/NBC). These WBC flow break/slope region are expected interact with currents due narrowness shelf. circulation investigated in terms current variability based an original data set covering 2002–2003 austral summer 2003 autumn. Results show that at mainly wind driven, experiencing a complete reversal between...
Three SAR-derived observations of dark surface patches along the Northeastern Brazilian coastline by end 2019 were misreported in media as oil spill-related. Unfortunately, these misled false positives or look-alikes. Therefore, this paper aims to technically evaluate look-alike classes analyzing image attributes found be helpful identification ocean targets, including spills, rain cells, biofilms, and low wind conditions. We use augmentation extend our dataset size create probability...
Abstract. The Amazon shelf is a key region for intense internal tides (ITs) and nonlinear solitary waves (ISWs) generation associated with them. shows well-marked seasonal variability (boreal Summer/fall ASOND vs spring MAMJJ) of the circulation stratification, which can both induce changes in ISWs physical characteristics. description neap-spring tidal off performed first time using meaningful data set composed more than hundred MODIS/TERRA imagery from 2005 to 2021, where 500 ISW...
In this article, thirteen years of weekly sea surface temperature (SST) fields derived from NOAA Advanced Very High Resolution Radiometer global area coverage infrared satellite data, January 1982 to December 1994, are used investigate spatial and temporal variabilities SST seasonal cycle in the Southwest Atlantic Oceano This work addresses large scale variations over eastem South American continental shelf slope regions limited offshore by 1000-m isobath, between 42° 22°S. time series fit...
This study characterized the elementary ratio and isotopes (δ 13 C, δ 15 N C/N) of surface sediments suspended solids in water 20 sample points estuarine complex Nova Viçosa-Caravelas, southern Bahia, Brazil .The d C DIC dissolved inorganic carbon (DIC), 18 O δD physicochemical parameters was analyzed to estimate contribution continental sources, marine anthropogenic interference area.The area is by influence adjacent coastal through main channel Caravelas Estuary entrance Peruípe River...
In this article, thirteen years of weekly sea surface temperature (SST) fields derived from NOAA Advanced Very High Resolution Radiometer global area coverage infrared satellite data, January 1982 to December 1994, are used investigate spatial and temporal variabilities SST seasonal cycle in the Southwest Atlantic Oceano This work addresses large scale variations over eastem South American continental shelf slope regions limited offshore by 1000-m isobath, between 42° 22°S. time series fit...
Organic matter is an important source of information on the transport and consolidation processes sediments. In this study, were utilized isotopes carbon nitrogen (δ13C δ15N), total organic (TOC), nitrogen, carbon/nitrogen (C/N) ratio 13C-NMR to understand origin behavior material in Abrolhos region. Were analyzed nine sediment cores taken from a mangrove, channel between mainland coral reefs. The average value mangrove was 18, which characterizes purely terrigenous areas. For reefs, C/N...