Evaluation of terrain corrections through FFT and classical integration in two selected areas of the andes and their impact on geoidal heights

Autores
Gomez, María Eugenia; Bagú, Diego Rubén; Del Cogliano, Daniel Héctor; Perdomo, Raúl Aníbal
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
As part of the regional geoid modeling, terrain corrections were computed in Tierra del Fuego island and in the west side of the province of Mendoza. The first place is located in the southernmost region of Argentina and Mendoza is in the center-west of this country. Considering both study areas, elevations range from 0 m to 6500 m. The classical integration of prism contribution and the 2-D FFT technique were used to estimate terrain corrections. This study aims at discussing the results obtained by both approaches and their applicability considering their advantages and disadvantages according to the regions under investigation. The analysis allowed us to conclude that classical integration has a better performance than FFT methods, especially in the highest regions where terrain corrections can be overestimated in more than 20 mGals by FFT. Both techniques described show similar results in flat areas. Finally, the effect that the error of terrain corrections computation has on geoidal heights is also discussed and numerically tested. It is proved that an error in gravity anomalies of 20 mGals may cause up to 2 m geoid height error.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Geofísica
Classical integration
Mendoza
Terrain corrections
Tierra del fuego
Correções do Terreno
Integração Clássica
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/85518
Acceder
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network_name_str SEDICI (UNLP)
spelling Evaluation of terrain corrections through FFT and classical integration in two selected areas of the andes and their impact on geoidal heightsavaliação das correções do terreno através da FFT e da integração clássica em duas áreas selecionadas dos andes e do seu impacto sobre a altura geoidalGomez, María EugeniaBagú, Diego RubénDel Cogliano, Daniel HéctorPerdomo, Raúl AníbalGeofísicaClassical integrationMendozaTerrain correctionsTierra del fuegoCorreções do TerrenoIntegração ClássicaAs part of the regional geoid modeling, terrain corrections were computed in Tierra del Fuego island and in the west side of the province of Mendoza. The first place is located in the southernmost region of Argentina and Mendoza is in the center-west of this country. Considering both study areas, elevations range from 0 m to 6500 m. The classical integration of prism contribution and the 2-D FFT technique were used to estimate terrain corrections. This study aims at discussing the results obtained by both approaches and their applicability considering their advantages and disadvantages according to the regions under investigation. The analysis allowed us to conclude that classical integration has a better performance than FFT methods, especially in the highest regions where terrain corrections can be overestimated in more than 20 mGals by FFT. Both techniques described show similar results in flat areas. Finally, the effect that the error of terrain corrections computation has on geoidal heights is also discussed and numerically tested. It is proved that an error in gravity anomalies of 20 mGals may cause up to 2 m geoid height error.Facultad de Ciencias Astronómicas y Geofísicas2013-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf407-419http://sedici.unlp.edu.ar/handle/10915/85518enginfo:eu-repo/semantics/altIdentifier/issn/1413-4853info:eu-repo/semantics/altIdentifier/doi/10.1590/S1982-21702013000300004info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:29Zoai:sedici.unlp.edu.ar:10915/85518Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:30.175SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Evaluation of terrain corrections through FFT and classical integration in two selected areas of the andes and their impact on geoidal heights
avaliação das correções do terreno através da FFT e da integração clássica em duas áreas selecionadas dos andes e do seu impacto sobre a altura geoidal
title Evaluation of terrain corrections through FFT and classical integration in two selected areas of the andes and their impact on geoidal heights
spellingShingle Evaluation of terrain corrections through FFT and classical integration in two selected areas of the andes and their impact on geoidal heights
Gomez, María Eugenia
Geofísica
Classical integration
Mendoza
Terrain corrections
Tierra del fuego
Correções do Terreno
Integração Clássica
title_short Evaluation of terrain corrections through FFT and classical integration in two selected areas of the andes and their impact on geoidal heights
title_full Evaluation of terrain corrections through FFT and classical integration in two selected areas of the andes and their impact on geoidal heights
title_fullStr Evaluation of terrain corrections through FFT and classical integration in two selected areas of the andes and their impact on geoidal heights
title_full_unstemmed Evaluation of terrain corrections through FFT and classical integration in two selected areas of the andes and their impact on geoidal heights
title_sort Evaluation of terrain corrections through FFT and classical integration in two selected areas of the andes and their impact on geoidal heights
dc.creator.none.fl_str_mv Gomez, María Eugenia
Bagú, Diego Rubén
Del Cogliano, Daniel Héctor
Perdomo, Raúl Aníbal
author Gomez, María Eugenia
author_facet Gomez, María Eugenia
Bagú, Diego Rubén
Del Cogliano, Daniel Héctor
Perdomo, Raúl Aníbal
author_role author
author2 Bagú, Diego Rubén
Del Cogliano, Daniel Héctor
Perdomo, Raúl Aníbal
author2_role author
author
author
dc.subject.none.fl_str_mv Geofísica
Classical integration
Mendoza
Terrain corrections
Tierra del fuego
Correções do Terreno
Integração Clássica
topic Geofísica
Classical integration
Mendoza
Terrain corrections
Tierra del fuego
Correções do Terreno
Integração Clássica
dc.description.none.fl_txt_mv As part of the regional geoid modeling, terrain corrections were computed in Tierra del Fuego island and in the west side of the province of Mendoza. The first place is located in the southernmost region of Argentina and Mendoza is in the center-west of this country. Considering both study areas, elevations range from 0 m to 6500 m. The classical integration of prism contribution and the 2-D FFT technique were used to estimate terrain corrections. This study aims at discussing the results obtained by both approaches and their applicability considering their advantages and disadvantages according to the regions under investigation. The analysis allowed us to conclude that classical integration has a better performance than FFT methods, especially in the highest regions where terrain corrections can be overestimated in more than 20 mGals by FFT. Both techniques described show similar results in flat areas. Finally, the effect that the error of terrain corrections computation has on geoidal heights is also discussed and numerically tested. It is proved that an error in gravity anomalies of 20 mGals may cause up to 2 m geoid height error.
Facultad de Ciencias Astronómicas y Geofísicas
description As part of the regional geoid modeling, terrain corrections were computed in Tierra del Fuego island and in the west side of the province of Mendoza. The first place is located in the southernmost region of Argentina and Mendoza is in the center-west of this country. Considering both study areas, elevations range from 0 m to 6500 m. The classical integration of prism contribution and the 2-D FFT technique were used to estimate terrain corrections. This study aims at discussing the results obtained by both approaches and their applicability considering their advantages and disadvantages according to the regions under investigation. The analysis allowed us to conclude that classical integration has a better performance than FFT methods, especially in the highest regions where terrain corrections can be overestimated in more than 20 mGals by FFT. Both techniques described show similar results in flat areas. Finally, the effect that the error of terrain corrections computation has on geoidal heights is also discussed and numerically tested. It is proved that an error in gravity anomalies of 20 mGals may cause up to 2 m geoid height error.
publishDate 2013
dc.date.none.fl_str_mv 2013-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/85518
url http://sedici.unlp.edu.ar/handle/10915/85518
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1413-4853
info:eu-repo/semantics/altIdentifier/doi/10.1590/S1982-21702013000300004
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
407-419
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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