Source Model for Sabancaya Volcano Constrained by DInSAR and GNSS Surface Deformation Observation
Sabancaya is the most active volcano of the Ampato-Sabancaya Volcanic Complex (ASVC) in southern Perú and has been erupting since 2016. The analysis of ascending and descending Sentinel-1 orbits (DInSAR) and Global Navigation Satellite System (GNSS) datasets from 2014 to 2019 imaged a radially symme...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-06-01
|
| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-4292/12/11/1852 |
| _version_ | 1827715419818950656 |
|---|---|
| author | Gregorio Boixart Luis F. Cruz Rafael Miranda Cruz Pablo A. Euillades Leonardo D. Euillades Maurizio Battaglia |
| author_facet | Gregorio Boixart Luis F. Cruz Rafael Miranda Cruz Pablo A. Euillades Leonardo D. Euillades Maurizio Battaglia |
| author_sort | Gregorio Boixart |
| collection | DOAJ |
| description | Sabancaya is the most active volcano of the Ampato-Sabancaya Volcanic Complex (ASVC) in southern Perú and has been erupting since 2016. The analysis of ascending and descending Sentinel-1 orbits (DInSAR) and Global Navigation Satellite System (GNSS) datasets from 2014 to 2019 imaged a radially symmetric inflating area, uplifting at a rate of 35 to 50 mm/yr and centered 5 km north of Sabancaya. The DInSAR and GNSS data were modeled independently. We inverted the DInSAR data to infer the location, depth, and volume change of the deformation source. Then, we verified the DInSAR deformation model against the results from the inversion of the GNSS data. Our modelling results suggest that the imaged inflation pattern can be explained by a source 12 to 15 km deep, with a volume change rate between 26 × 10<sup>6</sup> m<sup>3</sup>/yr and 46 × 10<sup>6</sup> m<sup>3</sup>/yr, located between the Sabancaya and Hualca Hualca volcano. The observed regional inflation pattern, concentration of earthquake epicenters north of the ASVC, and inferred location of the deformation source indicate that the current eruptive activity at Sabancaya is fed by a deep regional reservoir through a lateral magmatic plumbing system. |
| first_indexed | 2024-03-10T19:18:46Z |
| format | Article |
| id | doaj.art-431db8277ded45b68c75b08e3ceafcfc |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T19:18:46Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-431db8277ded45b68c75b08e3ceafcfc2023-11-20T03:09:12ZengMDPI AGRemote Sensing2072-42922020-06-011211185210.3390/rs12111852Source Model for Sabancaya Volcano Constrained by DInSAR and GNSS Surface Deformation ObservationGregorio Boixart0Luis F. Cruz1Rafael Miranda Cruz2Pablo A. Euillades3Leonardo D. Euillades4Maurizio Battaglia5Instituto de Estudios Andinos, Universidad de Buenos Aires-CONICET, Buenos Aires 1428, ArgentinaEscuela Profesional de Ingeniería Geofísica, Universidad Nacional de San Agustín de Arequipa, Arequipa 04001, PeruEscuela Profesional de Ingeniería Geofísica, Universidad Nacional de San Agustín de Arequipa, Arequipa 04001, PeruFacultad de Ingeniería, Instituto CEDIAC & CONICET, Universidad Nacional de Cuyo, Mendoza M5502JMA, ArgentinaFacultad de Ingeniería, Instituto CEDIAC & CONICET, Universidad Nacional de Cuyo, Mendoza M5502JMA, ArgentinaUS Geological Survey, Volcano Disaster Assistance Program, NASA Ames Research Center, Moffett Field, CA 94035, USASabancaya is the most active volcano of the Ampato-Sabancaya Volcanic Complex (ASVC) in southern Perú and has been erupting since 2016. The analysis of ascending and descending Sentinel-1 orbits (DInSAR) and Global Navigation Satellite System (GNSS) datasets from 2014 to 2019 imaged a radially symmetric inflating area, uplifting at a rate of 35 to 50 mm/yr and centered 5 km north of Sabancaya. The DInSAR and GNSS data were modeled independently. We inverted the DInSAR data to infer the location, depth, and volume change of the deformation source. Then, we verified the DInSAR deformation model against the results from the inversion of the GNSS data. Our modelling results suggest that the imaged inflation pattern can be explained by a source 12 to 15 km deep, with a volume change rate between 26 × 10<sup>6</sup> m<sup>3</sup>/yr and 46 × 10<sup>6</sup> m<sup>3</sup>/yr, located between the Sabancaya and Hualca Hualca volcano. The observed regional inflation pattern, concentration of earthquake epicenters north of the ASVC, and inferred location of the deformation source indicate that the current eruptive activity at Sabancaya is fed by a deep regional reservoir through a lateral magmatic plumbing system.https://www.mdpi.com/2072-4292/12/11/1852volcano deformationinterferometric synthetic aperture radarground deformation modellingGNSSvolcano geodesy |
| spellingShingle | Gregorio Boixart Luis F. Cruz Rafael Miranda Cruz Pablo A. Euillades Leonardo D. Euillades Maurizio Battaglia Source Model for Sabancaya Volcano Constrained by DInSAR and GNSS Surface Deformation Observation Remote Sensing volcano deformation interferometric synthetic aperture radar ground deformation modelling GNSS volcano geodesy |
| title | Source Model for Sabancaya Volcano Constrained by DInSAR and GNSS Surface Deformation Observation |
| title_full | Source Model for Sabancaya Volcano Constrained by DInSAR and GNSS Surface Deformation Observation |
| title_fullStr | Source Model for Sabancaya Volcano Constrained by DInSAR and GNSS Surface Deformation Observation |
| title_full_unstemmed | Source Model for Sabancaya Volcano Constrained by DInSAR and GNSS Surface Deformation Observation |
| title_short | Source Model for Sabancaya Volcano Constrained by DInSAR and GNSS Surface Deformation Observation |
| title_sort | source model for sabancaya volcano constrained by dinsar and gnss surface deformation observation |
| topic | volcano deformation interferometric synthetic aperture radar ground deformation modelling GNSS volcano geodesy |
| url | https://www.mdpi.com/2072-4292/12/11/1852 |
| work_keys_str_mv | AT gregorioboixart sourcemodelforsabancayavolcanoconstrainedbydinsarandgnsssurfacedeformationobservation AT luisfcruz sourcemodelforsabancayavolcanoconstrainedbydinsarandgnsssurfacedeformationobservation AT rafaelmirandacruz sourcemodelforsabancayavolcanoconstrainedbydinsarandgnsssurfacedeformationobservation AT pabloaeuillades sourcemodelforsabancayavolcanoconstrainedbydinsarandgnsssurfacedeformationobservation AT leonardodeuillades sourcemodelforsabancayavolcanoconstrainedbydinsarandgnsssurfacedeformationobservation AT mauriziobattaglia sourcemodelforsabancayavolcanoconstrainedbydinsarandgnsssurfacedeformationobservation |