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| Titel |
New A-DInSAR study of La Palma, Canary Islands, Spain. Results and interpretation |
| VerfasserIn |
Joaquin Escayo, Guadalupe Bru, Antonio Camacho, Juan F. Prieto, Jordi J. Mallorquí, Josè Fernandez |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250135824
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| Publikation (Nr.) |
 EGU/EGU2016-16734.pdf |
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| Zusammenfassung |
| We present new results on the deformation field for La Palma Island in the Canary
Archipelago using the complete archive of Envisat (2004-2010). The recent volcanic activity
registered in La Palma (at historical and subhistorical times, there have been seven eruptions,
in ca. A.D. 1480, 1585, 1646, 1677, 1712, 1949 and 1971) and the absence of any geodetic
monitoring system implemented in the Island at the 90’s converts A-DInSAR studies in an
basic information source for the study of surface displacements. From late 90’s several
geodetic studies using GNSS, gravimetry and InSAR techniques has been carried out in
the island (see Fernández et al., 2015 for a summary). We improve previous radar
satellite results by increasing the temporal coverage and using more images, which
generates a greater interferogram set, and using a recently developed A-DInSAR
processing technique which includes an error estimation for the LOS mean velocity and
deformation time series (“Subsidence” software, developed by the “Universitat Politècnica
de Catalunya, see e.g., Blanco-Sánchez et al., 2008, and Centolanza, 2015). Our
A-DInSAR results are compared with previous InSAR ones and with GNSS results
obtained from campaigns. A discussion and interpretation of the results is also
presented. Radar images have been provided by ESA through Cat.-1 13933 project. |
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