Alternative gravimetric methodology for isostatic analyses. An example for Bolivian Andes

In this work we present a new, alternative methodology for performing isostatic studies by means of geoid undulations, excluding the use of measured gravity anomalies. An example on Bolivian Andes is presented as case study. Considering a digital elevation model as input data, a theoretical perfec...

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Detalles Bibliográficos
Autores principales:	Crovetto, Carolina Beatríz, Introcaso, Antonio
Formato:	article artículo publishedVersion
Lenguaje:	Inglés
Publicado:	Instituto de Fisiografía y Geología 2009
Materias:	Geoid Gravity anomalies Isostasy new methodology Bolivian Andes Geoide Anomalías de gravedad Isostasia nueva metodología Andes Bolivianos
Acceso en línea:	http://hdl.handle.net/2133/1281 http://hdl.handle.net/2133/1281
Aporte de:	Repositorio Hipermedial de la Universidad Nacional de Rosario (UNR) de Universidad Nacional de Rosario

id	I15-R121-2133-1281
record_format	dspace
institution	Universidad Nacional de Rosario
institution_str	I-15
repository_str	R-121
collection	Repositorio Hipermedial de la Universidad Nacional de Rosario (UNR)
language	Inglés
orig_language_str_mv	eng
topic	Geoid Gravity anomalies Isostasy new methodology Bolivian Andes Geoide Anomalías de gravedad Isostasia nueva metodología Andes Bolivianos
spellingShingle	Geoid Gravity anomalies Isostasy new methodology Bolivian Andes Geoide Anomalías de gravedad Isostasia nueva metodología Andes Bolivianos Crovetto, Carolina Beatríz Introcaso, Antonio Alternative gravimetric methodology for isostatic analyses. An example for Bolivian Andes
topic_facet	Geoid Gravity anomalies Isostasy new methodology Bolivian Andes Geoide Anomalías de gravedad Isostasia nueva metodología Andes Bolivianos
description	In this work we present a new, alternative methodology for performing isostatic studies by means of geoid undulations, excluding the use of measured gravity anomalies. An example on Bolivian Andes is presented as case study. Considering a digital elevation model as input data, a theoretical perfectly isostatically balanced Airy crustal model was constructed for Bolivia. The free-air and the Bouguer anomalies, and the geoid undulations produced by this theoretical model, were directly evaluated by means of three-dimensional integration. The “real” geoid undulations were computed from the EGM96 global geopotential model, and were filtered from long wavelengths by means of a sparse Fourier transform method. The residual “real” geoid undulations were compared with the theoretical geoid undulations for Bolivian Andes, showing a global tendency towards isostatic balance, agreeing with previous results obtained using traditional gravimetry. The free-air and the Bouguer anomalies from the EGM96 residual geoid undulations were also evaluated and then compared with the anomalies produced by the theoretical model. The Bouguer anomalies support definitely the results obtained using the geoid undulations while the free-air anomalies, although less consistently, showed the same global tendency.
format	article artículo publishedVersion
author	Crovetto, Carolina Beatríz Introcaso, Antonio
author_facet	Crovetto, Carolina Beatríz Introcaso, Antonio
author_sort	Crovetto, Carolina Beatríz
title	Alternative gravimetric methodology for isostatic analyses. An example for Bolivian Andes
title_short	Alternative gravimetric methodology for isostatic analyses. An example for Bolivian Andes
title_full	Alternative gravimetric methodology for isostatic analyses. An example for Bolivian Andes
title_fullStr	Alternative gravimetric methodology for isostatic analyses. An example for Bolivian Andes
title_full_unstemmed	Alternative gravimetric methodology for isostatic analyses. An example for Bolivian Andes
title_sort	alternative gravimetric methodology for isostatic analyses. an example for bolivian andes
publisher	Instituto de Fisiografía y Geología
publishDate	2009
url	http://hdl.handle.net/2133/1281 http://hdl.handle.net/2133/1281
work_keys_str_mv	AT crovettocarolinabeatriz alternativegravimetricmethodologyforisostaticanalysesanexampleforbolivianandes AT introcasoantonio alternativegravimetricmethodologyforisostaticanalysesanexampleforbolivianandes
bdutipo_str	Repositorios
_version_	1764820407398957056

Alternative gravimetric methodology for isostatic analyses. An example for Bolivian Andes

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