New Advances of the Multiscale Approach for the Analyses of InSAR Ground Measurements: The Yellowstone Caldera Case-Study
In this study, we describe new advances in the multiscale methodology to allow a more realistic interpretation of volcanic deformation fields by investigating geometrically irregular bodies and multi-source scenarios. We propose an integrated approach to be applied to InSAR measurements, employing t...
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MDPI AG
2022-10-01
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author | Andrea Barone Antonio Pepe Pietro Tizzani Maurizio Fedi Raffaele Castaldo |
author_facet | Andrea Barone Antonio Pepe Pietro Tizzani Maurizio Fedi Raffaele Castaldo |
author_sort | Andrea Barone |
collection | DOAJ |
description | In this study, we describe new advances in the multiscale methodology to allow a more realistic interpretation of volcanic deformation fields by investigating geometrically irregular bodies and multi-source scenarios. We propose an integrated approach to be applied to InSAR measurements, employing the Multiridge and ScalFun methods and the Total Horizontal Derivative (THD) technique: this strategy provides unconstrained information on the source geometrical parameters, such as the depth, position, shape, and horizontal extent. To do this, we start from conditions where the biharmonic deformation field satisfies Laplace’s equation and homogeneity law. We test the use of the multiscale procedures to model single and multisource scenarios with irregular geometries by retrieving satisfactory results for a set of simulated sources. Finally, we employ the proposed approach to the 2004–2009 uplift episode at the Yellowstone Caldera (U.S.) measured by ENVISAT InSAR to provide information about the volcanic plumbing system. Our results indicate a single <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>~</mo><mn>50</mn><mo>×</mo><mn>20</mn></mrow></semantics></math></inline-formula> km<sup>2</sup> extended source lying beneath the caldera at around <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>10</mn></mrow></semantics></math></inline-formula> km b.s.l. (depth to the center), which is shallower below both the resurgent domes (6–7 km b.s.l. depth to the top). |
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issn | 2072-4292 |
language | English |
last_indexed | 2024-03-09T18:42:12Z |
publishDate | 2022-10-01 |
publisher | MDPI AG |
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series | Remote Sensing |
spelling | doaj.art-909839dd973a4b2cbab8576733d91cfd2023-11-24T06:37:16ZengMDPI AGRemote Sensing2072-42922022-10-011421532810.3390/rs14215328New Advances of the Multiscale Approach for the Analyses of InSAR Ground Measurements: The Yellowstone Caldera Case-StudyAndrea Barone0Antonio Pepe1Pietro Tizzani2Maurizio Fedi3Raffaele Castaldo4Institute for the Electromagnetic Sensing of the Environment (IREA), National Research Council (CNR) of Italy, 80124 Napoli, ItalyInstitute for the Electromagnetic Sensing of the Environment (IREA), National Research Council (CNR) of Italy, 80124 Napoli, ItalyInstitute for the Electromagnetic Sensing of the Environment (IREA), National Research Council (CNR) of Italy, 80124 Napoli, ItalyDepartment of Earth, Environmental and Resources Science (DiSTAR), University of Naples Federico II, 80126 Napoli, ItalyInstitute for the Electromagnetic Sensing of the Environment (IREA), National Research Council (CNR) of Italy, 80124 Napoli, ItalyIn this study, we describe new advances in the multiscale methodology to allow a more realistic interpretation of volcanic deformation fields by investigating geometrically irregular bodies and multi-source scenarios. We propose an integrated approach to be applied to InSAR measurements, employing the Multiridge and ScalFun methods and the Total Horizontal Derivative (THD) technique: this strategy provides unconstrained information on the source geometrical parameters, such as the depth, position, shape, and horizontal extent. To do this, we start from conditions where the biharmonic deformation field satisfies Laplace’s equation and homogeneity law. We test the use of the multiscale procedures to model single and multisource scenarios with irregular geometries by retrieving satisfactory results for a set of simulated sources. Finally, we employ the proposed approach to the 2004–2009 uplift episode at the Yellowstone Caldera (U.S.) measured by ENVISAT InSAR to provide information about the volcanic plumbing system. Our results indicate a single <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>~</mo><mn>50</mn><mo>×</mo><mn>20</mn></mrow></semantics></math></inline-formula> km<sup>2</sup> extended source lying beneath the caldera at around <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>10</mn></mrow></semantics></math></inline-formula> km b.s.l. (depth to the center), which is shallower below both the resurgent domes (6–7 km b.s.l. depth to the top).https://www.mdpi.com/2072-4292/14/21/5328DInSAR measurementsvolcano deformationmultiscale methodssource modeling |
spellingShingle | Andrea Barone Antonio Pepe Pietro Tizzani Maurizio Fedi Raffaele Castaldo New Advances of the Multiscale Approach for the Analyses of InSAR Ground Measurements: The Yellowstone Caldera Case-Study Remote Sensing DInSAR measurements volcano deformation multiscale methods source modeling |
title | New Advances of the Multiscale Approach for the Analyses of InSAR Ground Measurements: The Yellowstone Caldera Case-Study |
title_full | New Advances of the Multiscale Approach for the Analyses of InSAR Ground Measurements: The Yellowstone Caldera Case-Study |
title_fullStr | New Advances of the Multiscale Approach for the Analyses of InSAR Ground Measurements: The Yellowstone Caldera Case-Study |
title_full_unstemmed | New Advances of the Multiscale Approach for the Analyses of InSAR Ground Measurements: The Yellowstone Caldera Case-Study |
title_short | New Advances of the Multiscale Approach for the Analyses of InSAR Ground Measurements: The Yellowstone Caldera Case-Study |
title_sort | new advances of the multiscale approach for the analyses of insar ground measurements the yellowstone caldera case study |
topic | DInSAR measurements volcano deformation multiscale methods source modeling |
url | https://www.mdpi.com/2072-4292/14/21/5328 |
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