UTILIZING THE CR-NETWORK IN ICELAND FOR AN AUTOMATED INTERFEROMETRIC PROCESSING CHAIN – CASE STUDY WITH ERS-TANDEM DATA

摘要

The monitoring of geodynamic processes related to geothermal, seismic, and volcanic activity and of climate change in the highly active Neovolcanic Zone of Southern Iceland is in the focus of several ESA-projects since 1995. Within the project AO.2 D 116 a total amount of 30 corner reflectors (CR) were installed in the years 1995 and 1998 around three test sites in South Iceland: the central volcano Hekla, the plateau glacier Myrdalsj?kull with the subglacial Katla Caldera and the Vatnaj?kull ice cap covering several fissure swarms and central volcanoes. The experiences of the ENVISAT-ASAR monitoring (ENVISAT project ID 142) during the recent Grímsv?tn eruption (01.11.2004 – 06.11.2004) at the Vatnaj?kull glacier revealed the basic necessity of an automated SAR processing chain, on the way of pushing the monitoring to a real time service. In the paper we analyse the main processing steps of an interferometric phase processing with respect to automation and present results of a case study with ERS-Tandem data.