InSAR4Indo: Integrating SAR Interferometry and GNSS for Studying tectonic processes in Indonesia

ABSTRACT

Indonesia is periodically affected by severe volcano eruptions and earthquakes, which are geologically coupled to the tectonic convergence of the Australian plate beneath the Sunda Plate. SAR interferometry (InSAR) can be used to support studying and modeling of both tectonic motion associated with faults and volcanic processes related to magma movement. Main advantages of InSAR are the synoptic view of wide area, and the periodic surveying that guarantees long time monitoring and time series analysis.

PRINCIPAL INVESTIGATOR
FABIO BOVENGA

DATA SHEET
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   TYPE AND DATE
   ESA-ISSIA Contract (No. 4000114611/15/F/MOS)
   STARTING DATE – Oct 19, 2015
   ENDING DATE – Sept 07, 2016

TOTAL COST
COST € 112.000
FUNDING € 112.000

CNR ISSIA
COST € 35.000
FUNDING € 35.000

CONCEPT

Indonesia is periodically affected by severe volcano eruptions and earthquakes, which are geologically coupled to the tectonic convergence of the Australian plate beneath the Sunda Plate. SAR interferometry (InSAR) can be used to support studying and modeling of both tectonic motion associated with faults and volcanic processes related to magma movement. Main advantages of InSAR are the synoptic view of wide area, and the periodic surveying that guarantees long time monitoring and time series analysis.

Nowadays, historical SAR data acquired in different bands and from several satellite missions are available, and the launch of Sentinel-1A will guarantee data for the next future.

Multi-temporal InSAR (MTI) is able to provide both mean displacement maps and displacement time series. The study of tectonic phenomena requires large spatial analysis that poses challenges in MTI processing. Moreover, a reliable modeling needs additional information coming from geological data as well as other in situ measurements as provided by GNSS networks.

This proposal is aimed at performing an analysis of Indonesian tectonic through InSAR by implementing to the following work packages:

–        test sites selection according to the availability of historical SAR data, GNSS networks, geological data;

–        processing of historical SAR datasets through ad hoc MTI algorithms selected depending on both the spatial scale of the phenomenon and characteristics of the dataset;

–        integration of geological information, GNSS measurements and InSAR deformation records for modeling tectonic and/or volcanic processes;

–        developing a strategy for routinely assimilate Sentinel-1 data within the MTI processing.

CNR leads the project and will be involved in SAR Interferometry, integration of InSAR data with GNSS data, result analysis. 

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PARTNERSHIP

CNR ISSIA, Bari (PI);
Dipartimento Interateneo di Fisica, Bari;
National Observatory of Athens – NOA, Athens (Greece);
Collaborative Space Ltd, Dundrum (Ireland);
Syiah Kuala University, Faculty of Natural Sciences, Darussalam, Banda Aceh (Indonesia) (Associate research unit).