Radar remote sensing of wind-driven land degradation processes in northeastern Patagonia

Autores
del Valle, Hector Francisco; Blanco, Paula Daniela; Metternicht, Graciela; Zinck, J. A.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Wind-driven land degradation negatively impacts on rangeland production and infrastructure in the Valdes Peninsula, northeastern Patagonia. Th e Valdes Peninsula has the most noticeable dunefields of the Patagonian drylands. Wind erosion has been assessed at different scales in this region, but often with limited data. In general, terrain features caused by wind activity are better discriminated by active microwaves than by sensors operating in the visible and infrared regions of the electromagnetic spectrum. Th is paper aims to analyze wind-driven land degradation processes that control the radar backscatter observed in different sources of radar imagery. We used subsets derived from SIR-C, ERS-1 and 2, ENVISAT ASAR, RADARSAT-1, and ALOS PALSAR data. Th e visibility of aeolian features on radar images is mostly a function of wavelength, polarization, and incidence angle. Stabilized sand deposits are clearly observed in radar images, with defined edges but also signals of ongoing wind erosion. One of the most conspicuous features corresponds to old track sand dunes, a mixture of active and inactive barchanoid ridges and parabolic dunes. Th is is a clear example of deactivation of migrating dunes under the influence of vegetation. Th e L-band data reveal details of these sand ridges, whereas the C-band data only allow detecting a few of the larger tracks. Th e results of this study enable us to make recommendations about the utility of some radar sensor configurations for wind-driven land degradation reconnaissance in mid-latitude regions.
Fil: del Valle, Hector Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Blanco, Paula Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Metternicht, Graciela. Regional Office for Latin America and the Caribbean; Panamá
Fil: Zinck, J. A.. International Institute for Geo-Information Science and Earth Observation; Países Bajos
Materia
C-Band
L-Band
Radar Sensor Configuration
Mid-Latitude Regions
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/62795
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/62795
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Radar remote sensing of wind-driven land degradation processes in northeastern Patagoniadel Valle, Hector FranciscoBlanco, Paula DanielaMetternicht, GracielaZinck, J. A.C-BandL-BandRadar Sensor ConfigurationMid-Latitude Regionshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Wind-driven land degradation negatively impacts on rangeland production and infrastructure in the Valdes Peninsula, northeastern Patagonia. Th e Valdes Peninsula has the most noticeable dunefields of the Patagonian drylands. Wind erosion has been assessed at different scales in this region, but often with limited data. In general, terrain features caused by wind activity are better discriminated by active microwaves than by sensors operating in the visible and infrared regions of the electromagnetic spectrum. Th is paper aims to analyze wind-driven land degradation processes that control the radar backscatter observed in different sources of radar imagery. We used subsets derived from SIR-C, ERS-1 and 2, ENVISAT ASAR, RADARSAT-1, and ALOS PALSAR data. Th e visibility of aeolian features on radar images is mostly a function of wavelength, polarization, and incidence angle. Stabilized sand deposits are clearly observed in radar images, with defined edges but also signals of ongoing wind erosion. One of the most conspicuous features corresponds to old track sand dunes, a mixture of active and inactive barchanoid ridges and parabolic dunes. Th is is a clear example of deactivation of migrating dunes under the influence of vegetation. Th e L-band data reveal details of these sand ridges, whereas the C-band data only allow detecting a few of the larger tracks. Th e results of this study enable us to make recommendations about the utility of some radar sensor configurations for wind-driven land degradation reconnaissance in mid-latitude regions.Fil: del Valle, Hector Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Blanco, Paula Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Metternicht, Graciela. Regional Office for Latin America and the Caribbean; PanamáFil: Zinck, J. A.. International Institute for Geo-Information Science and Earth Observation; Países BajosAmerican Society of Agronomy2010-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/62795del Valle, Hector Francisco; Blanco, Paula Daniela; Metternicht, Graciela; Zinck, J. A.; Radar remote sensing of wind-driven land degradation processes in northeastern Patagonia; American Society of Agronomy; Journal of Environmental Quality; 39; 1; 1-2010; 62-750047-24251537-2537CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.2134/jeq2009.0071info:eu-repo/semantics/altIdentifier/url/https://dl.sciencesocieties.org/publications/jeq/abstracts/39/1/62info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:56:17Zoai:ri.conicet.gov.ar:11336/62795instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:56:17.815CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Radar remote sensing of wind-driven land degradation processes in northeastern Patagonia
title Radar remote sensing of wind-driven land degradation processes in northeastern Patagonia
spellingShingle Radar remote sensing of wind-driven land degradation processes in northeastern Patagonia
del Valle, Hector Francisco
C-Band
L-Band
Radar Sensor Configuration
Mid-Latitude Regions
title_short Radar remote sensing of wind-driven land degradation processes in northeastern Patagonia
title_full Radar remote sensing of wind-driven land degradation processes in northeastern Patagonia
title_fullStr Radar remote sensing of wind-driven land degradation processes in northeastern Patagonia
title_full_unstemmed Radar remote sensing of wind-driven land degradation processes in northeastern Patagonia
title_sort Radar remote sensing of wind-driven land degradation processes in northeastern Patagonia
dc.creator.none.fl_str_mv del Valle, Hector Francisco
Blanco, Paula Daniela
Metternicht, Graciela
Zinck, J. A.
author del Valle, Hector Francisco
author_facet del Valle, Hector Francisco
Blanco, Paula Daniela
Metternicht, Graciela
Zinck, J. A.
author_role author
author2 Blanco, Paula Daniela
Metternicht, Graciela
Zinck, J. A.
author2_role author
author
author
dc.subject.none.fl_str_mv C-Band
L-Band
Radar Sensor Configuration
Mid-Latitude Regions
topic C-Band
L-Band
Radar Sensor Configuration
Mid-Latitude Regions
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Wind-driven land degradation negatively impacts on rangeland production and infrastructure in the Valdes Peninsula, northeastern Patagonia. Th e Valdes Peninsula has the most noticeable dunefields of the Patagonian drylands. Wind erosion has been assessed at different scales in this region, but often with limited data. In general, terrain features caused by wind activity are better discriminated by active microwaves than by sensors operating in the visible and infrared regions of the electromagnetic spectrum. Th is paper aims to analyze wind-driven land degradation processes that control the radar backscatter observed in different sources of radar imagery. We used subsets derived from SIR-C, ERS-1 and 2, ENVISAT ASAR, RADARSAT-1, and ALOS PALSAR data. Th e visibility of aeolian features on radar images is mostly a function of wavelength, polarization, and incidence angle. Stabilized sand deposits are clearly observed in radar images, with defined edges but also signals of ongoing wind erosion. One of the most conspicuous features corresponds to old track sand dunes, a mixture of active and inactive barchanoid ridges and parabolic dunes. Th is is a clear example of deactivation of migrating dunes under the influence of vegetation. Th e L-band data reveal details of these sand ridges, whereas the C-band data only allow detecting a few of the larger tracks. Th e results of this study enable us to make recommendations about the utility of some radar sensor configurations for wind-driven land degradation reconnaissance in mid-latitude regions.
Fil: del Valle, Hector Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Blanco, Paula Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Metternicht, Graciela. Regional Office for Latin America and the Caribbean; Panamá
Fil: Zinck, J. A.. International Institute for Geo-Information Science and Earth Observation; Países Bajos
description Wind-driven land degradation negatively impacts on rangeland production and infrastructure in the Valdes Peninsula, northeastern Patagonia. Th e Valdes Peninsula has the most noticeable dunefields of the Patagonian drylands. Wind erosion has been assessed at different scales in this region, but often with limited data. In general, terrain features caused by wind activity are better discriminated by active microwaves than by sensors operating in the visible and infrared regions of the electromagnetic spectrum. Th is paper aims to analyze wind-driven land degradation processes that control the radar backscatter observed in different sources of radar imagery. We used subsets derived from SIR-C, ERS-1 and 2, ENVISAT ASAR, RADARSAT-1, and ALOS PALSAR data. Th e visibility of aeolian features on radar images is mostly a function of wavelength, polarization, and incidence angle. Stabilized sand deposits are clearly observed in radar images, with defined edges but also signals of ongoing wind erosion. One of the most conspicuous features corresponds to old track sand dunes, a mixture of active and inactive barchanoid ridges and parabolic dunes. Th is is a clear example of deactivation of migrating dunes under the influence of vegetation. Th e L-band data reveal details of these sand ridges, whereas the C-band data only allow detecting a few of the larger tracks. Th e results of this study enable us to make recommendations about the utility of some radar sensor configurations for wind-driven land degradation reconnaissance in mid-latitude regions.
publishDate 2010
dc.date.none.fl_str_mv 2010-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/62795
del Valle, Hector Francisco; Blanco, Paula Daniela; Metternicht, Graciela; Zinck, J. A.; Radar remote sensing of wind-driven land degradation processes in northeastern Patagonia; American Society of Agronomy; Journal of Environmental Quality; 39; 1; 1-2010; 62-75
0047-2425
1537-2537
CONICET Digital
CONICET
url http://hdl.handle.net/11336/62795
identifier_str_mv del Valle, Hector Francisco; Blanco, Paula Daniela; Metternicht, Graciela; Zinck, J. A.; Radar remote sensing of wind-driven land degradation processes in northeastern Patagonia; American Society of Agronomy; Journal of Environmental Quality; 39; 1; 1-2010; 62-75
0047-2425
1537-2537
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.2134/jeq2009.0071
info:eu-repo/semantics/altIdentifier/url/https://dl.sciencesocieties.org/publications/jeq/abstracts/39/1/62
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Society of Agronomy
publisher.none.fl_str_mv American Society of Agronomy
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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