Abstract

Indonesia is periodically affected by severe volcanic eruptions and earthquakes, which are geologically coupled to theconvergence of the Australian tectonic plate beneath the Sunda Plate. Multi-temporal SAR interferometry (MTI) can beused to support studying and modelling of terrain movements. This work is aimed at performing an analysis of grounddisplacements over Indonesian sites through MTI techniques. Test sites have been selected according to the availabilityof archived SAR data, GNSS networks, and geological data. A stack of COSMO-SkyMed data, acquired in stripmapmode between 2011 and 2015, has been selected over the Banda Aceh region in Sumatra island. Geological maps of thetest sites are available, and several GNSS stations from the Continuously Operating Reference Stations Indonesiannetwork are found in the area of interest. Both the SPINUA and the StaMPS MTI algorithms have been used forprocessing the data, and deriving displacement maps. The ground deformations detected on the area are interpretedaccording to the available geological and geophysical information. The MTI results seem to confirm the inactivity of theAceh fault segment, while the lack of coherent targets hinders reliable displacement measurements along the Seulineumsegment. MTI data additionally allowed to identify local, non-tectonic ground instabilities: several areas are affected bysubsidence due to unconsolidated coastal and alluvial sediments, deserving more investigations by local authorities.Finally, MTI results could be useful to integrate and update data from the existing GPS network.

Autore Pugliese

• Refice Alberto , Bovenga Fabio

Tutti gli autori

• F. Bovenga; A. Refice; A. Belmonte ; R. Nutricato; D. O. Nitti; M. T. Chiaradia; S. Valkaniotis; S. Gkionic; C. Kosma; A. Ganas; P. Manunta; Elizar; Darusman; P. Bally

Titolo volume/Rivista

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Anno di pubblicazione

2017

ISSN

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ISBN

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Numero di citazioni Wos

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Numero di citazioni Scopus

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Settori ERC

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Codici ASJC

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