Influence of flood conditions and vegetation status on the radar backscatter of wetland ecosystems
The aim of this paper is to assess the use of RADARSAT SAR data for wetland ecosystem identification considering the influence of target features (vegetation type, flood conditions, phenology, and fires), as well as sensor parameters (varying incidence angles). The Lower Delta islands of the Paraná...
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Canadian Aeronautics and Space Institute
2001
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| LEADER | 12447caa a22010817a 4500 | ||
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| 001 | PAPER-20743 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518205209.0 | ||
| 008 | 190411s2001 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-0142159830 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 030 | |a CJRSD | ||
| 100 | 1 | |a Kandus, P. | |
| 245 | 1 | 0 | |a Influence of flood conditions and vegetation status on the radar backscatter of wetland ecosystems |
| 260 | |b Canadian Aeronautics and Space Institute |c 2001 | ||
| 270 | 1 | 0 | |m Kandus, P.; Laboratorio de Ecologia Regional, Departamento de Biologia, Universidad de Buenos Aires (UBA), Pab. II 4to. piso., (1428) Buenos Aires, Argentina; email: pato@bg.fcen.uba.ar |
| 506 | |2 openaire |e Política editorial | ||
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| 520 | 3 | |a The aim of this paper is to assess the use of RADARSAT SAR data for wetland ecosystem identification considering the influence of target features (vegetation type, flood conditions, phenology, and fires), as well as sensor parameters (varying incidence angles). The Lower Delta islands of the Paraná River in Argentina were selected as the study area. Six SAR images acquired during the summer and winter of 1997 and 1998 were used. This set includes Standard Beams S1, S4 and S6 to account for the incidence angle effect. Radar backscatter of samples taken at known sites was analyzed. The forest backscatter signal shows temporal stability during summer and winter, either with leaf-on or leaf-off trees. On the contrary, backscattering from forest is strongly enhanced by underlying water. Radar returns were found to change from an attenuated signal to one dominated by double-bounce behaviour. In wetlands dominated by rushes, the dominant interaction mechanism may change from double-bounce to specular reflection due to flood. During normal water-level conditions, the ability to differentiate forest from herbaceous vegetation was found to decrease with increasing incidence angle. Under extreme flooding, radar backscattering decreases from steep to shallow incidence angles, about 3 dB for forest, and 4 dB for rushes. |l eng | |
| 536 | |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas, PID 0646/98 | ||
| 536 | |a Detalles de la financiación: Universidad de Buenos Aires, FonCyT/SECyT PICT Ns | ||
| 536 | |a Detalles de la financiación: This work has been carried out within the framework of GlobeSAR-2 project "Suitability of RADARSAT Images for Mapping Forested Areas and Natural Vegetation". This research was funded by the Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET) PID 0646/98, University of Buenos Aires and FonCyT/SECyT PICT Ns. 4503, 1417. The authors express their gratitude to the members of CONAE's staff who were responsible for coordinating the GlobeSAR-2 Program in Argentina. They are also indebted to CCRS and RADARSAT for providing data and support, and to Dr. Phil Howarth for many useful comments on the manuscript. | ||
| 593 | |a Laboratorio de Ecologia Regional, Departamento de Biologia, Universidad de Buenos Aires (UBA), Pab. II 4to. piso., (1428) Buenos Aires, Argentina | ||
| 593 | |a CONICET-IAFE, Pabellon, IAFE Ciudad Univ. (1428), Buenos Aires, Argentina | ||
| 593 | |a Applications Division, Canada Centre for Remote Sensing, 588 Booth Street, Ottawa, Ont., Canada | ||
| 690 | 1 | 0 | |a BIOLOGY |
| 690 | 1 | 0 | |a ECOSYSTEMS |
| 690 | 1 | 0 | |a ELECTROMAGNETIC WAVE ATTENUATION |
| 690 | 1 | 0 | |a ELECTROMAGNETIC WAVE BACKSCATTERING |
| 690 | 1 | 0 | |a FIRES |
| 690 | 1 | 0 | |a FLOOD DAMAGE |
| 690 | 1 | 0 | |a FORESTRY |
| 690 | 1 | 0 | |a RADAR IMAGING |
| 690 | 1 | 0 | |a SYNTHETIC APERTURE RADAR |
| 690 | 1 | 0 | |a VEGETATION |
| 690 | 1 | 0 | |a WETLANDS |
| 690 | 1 | 0 | |a FLOOD CONDITIONS |
| 690 | 1 | 0 | |a INCIDENCE ANGLE EFFECT |
| 690 | 1 | 0 | |a RADAR BACKSCATTER |
| 690 | 1 | 0 | |a WETLAND ECOSYSTEMS |
| 690 | 1 | 0 | |a REMOTE SENSING |
| 690 | 1 | 0 | |a ECOSYSTEMS |
| 690 | 1 | 0 | |a ELECTROMAGNETIC RADIATION |
| 690 | 1 | 0 | |a FIRES |
| 690 | 1 | 0 | |a FLOODS |
| 690 | 1 | 0 | |a FORESTS |
| 690 | 1 | 0 | |a PHENOLOGY |
| 690 | 1 | 0 | |a PLANTS |
| 650 | 1 | 7 | |2 spines |a RADAR |
| 700 | 1 | |a Karszenbaum, H. | |
| 700 | 1 | |a Pultz, T. | |
| 700 | 1 | |a Parmuchi, G. | |
| 700 | 1 | |a Bava, J. | |
| 773 | 0 | |d Canadian Aeronautics and Space Institute, 2001 |g v. 27 |h pp. 651-662 |k n. 6 |p Can J Remote Sens |x 07038992 |t Canadian Journal of Remote Sensing | |
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| 856 | 4 | 0 | |u https://doi.org/10.1080/07038992.2001.10854907 |y DOI |
| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_07038992_v27_n6_p651_Kandus |y Handle |
| 856 | 4 | 0 | |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07038992_v27_n6_p651_Kandus |y Registro en la Biblioteca Digital |
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