Use of synthetic aperture radar for recognition of Coastal Geomorphological Features, land-use assessment and shoreline changes in Bragança coast, Pará, Northern Brazil
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| Format: | Artículo científico |
| Langue: | en |
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Academia Brasileira de Ciências
2003
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| _version_ | 1876442893489537024 |
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| author | Pedro W.M. Souza-Filho |
| author_facet | Pedro W.M. Souza-Filho |
| contents | Use of synthetic aperture radar for recognition of Coastal Geomorphological Features, land-use assessment and shoreline changes in Bragança coast, Pará, Northern Brazil Pedro W.M. Souza-Filho Waldir R. Paradella Multidisciplinaria (Ciencias Naturales y Exactas) Amazon mangrove geomorphology remote sensing coastal changes Synthetic Aperture Radar (SAR) images are being used more extensively than ever before for geoscienceapplications in the moist tropics. In this investigation, a RADARSAT1-1 C-HH SAR image acquired in 1998was used for coastal mapping and land-cover assessment in the Bragança area, in the northern Brazil. Theairborne GEMS 1000 X-HH radar image acquired in 1972 during the RADAM Project was also used forevaluating coastal changes occurring over the last three decades. The research has confirmed the usefulness ofRADARSAT-1 image for geomorphological mapping and land-cover assessment, particularly in macrotidalmangrove coasts. It was possible to map mangroves, salt marshes, chenier sand ridges, dunes, barrier-beachridges, shallow water morphologies and different forms of land-use. Furthermore, a new method to estimateshoreline changes based on the superimposition of vectors extracted from both sources of SAR data hasindicated that the shoreline has been subjected to severe coastal erosion responsible for retreat of 32 km2and accretion of 20 km2, resulting in a mangrove land loss of almost 12 km2. In an application perspective,orbital and airborne SAR data proved to be a fundamental source of information for both geomorphologicalmapping and monitoring coastal changes in moist tropical environments. 2003 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32775307 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.3 Vol.75 |
| format | Artículo científico |
| id | redalyc_32775307 |
| institution | Redalyc |
| language | en |
| publishDate | 2003 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Use of synthetic aperture radar for recognition of Coastal Geomorphological Features, land-use assessment and shoreline changes in Bragança coast, Pará, Northern Brazil Pedro W.M. Souza-Filho Multidisciplinaria (Ciencias Naturales y Exactas) Amazon mangrove geomorphology remote sensing coastal changes Use of synthetic aperture radar for recognition of Coastal Geomorphological Features, land-use assessment and shoreline changes in Bragança coast, Pará, Northern Brazil Pedro W.M. Souza-Filho Waldir R. Paradella Multidisciplinaria (Ciencias Naturales y Exactas) Amazon mangrove geomorphology remote sensing coastal changes Synthetic Aperture Radar (SAR) images are being used more extensively than ever before for geoscienceapplications in the moist tropics. In this investigation, a RADARSAT1-1 C-HH SAR image acquired in 1998was used for coastal mapping and land-cover assessment in the Bragança area, in the northern Brazil. Theairborne GEMS 1000 X-HH radar image acquired in 1972 during the RADAM Project was also used forevaluating coastal changes occurring over the last three decades. The research has confirmed the usefulness ofRADARSAT-1 image for geomorphological mapping and land-cover assessment, particularly in macrotidalmangrove coasts. It was possible to map mangroves, salt marshes, chenier sand ridges, dunes, barrier-beachridges, shallow water morphologies and different forms of land-use. Furthermore, a new method to estimateshoreline changes based on the superimposition of vectors extracted from both sources of SAR data hasindicated that the shoreline has been subjected to severe coastal erosion responsible for retreat of 32 km2and accretion of 20 km2, resulting in a mangrove land loss of almost 12 km2. In an application perspective,orbital and airborne SAR data proved to be a fundamental source of information for both geomorphologicalmapping and monitoring coastal changes in moist tropical environments. 2003 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32775307 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.3 Vol.75 |
| title | Use of synthetic aperture radar for recognition of Coastal Geomorphological Features, land-use assessment and shoreline changes in Bragança coast, Pará, Northern Brazil |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) Amazon mangrove geomorphology remote sensing coastal changes |
| url | https://www.redalyc.org/articulo.oa?id=32775307 |