Seismological
Research Centre

DInSAR Data - Period 1993-2010

For the interferometric analysis during the period 1993-2010, the entire available archive of ERS-1/2 and ENVISAT data for the area of interest from both descending and ascending orbits was used.

Descending orbit (period 1993-2010)

For the interferometric analysis performed with data acquired by satellite from a descending orbit (track 208), 141 satellite images were used for the period May 1993 - September 2010; Figure 1 shows the distribution of these data in the perpendicular time/baseline plane (orbital separation). In particular, the black and red rhombuses represent the ERS-1/2 and ENVISAT data, respectively. Table 1 shows the main characteristics of the dataset used.

Figure 1 - Distribution in the time/baseline-perpendicular plane of SAR ERS-1/2 and ENVISAT data acquired from descending orbits
Figure 1 - Distribution in the time/baseline-perpendicular plane of SAR ERS-1/2 and ENVISAT data acquired from descending orbits and related to the area of interest. The black and red rhombuses represent the ERS and ENVISAT data, respectively.
Figure description

Perpendicular Baseline [m]: -2000 - 1500. Time [year]: 1995 - 2010.

Table 1 - Main characteristics of ENVISAT SAR data used for descending orbits
Table 1 - Main characteristics of ENVISAT SAR data used for descending orbits
Lunghezza d’onda5.6 cm
Orbita di acquisizioneDiscendente
Risoluzione spaziale nominale~ 4 m x 20 m
Risoluzione spaziale del dato interferometrico~ 80 m x 80 m
Estensione spaziale~95 km x 60 km
Periodo di osservazionemaggio 1993 – settembre 2010
Numero di acquisizioni utilizzate141
Numero di interferogrammi generati412
Angolo di vista a centro scena~23°

Ascending orbit (period 1995-2010)

For the interferometric analysis performed with data acquired by satellite from an ascending orbit, 76 satellite images (26 ERS-1/2 and 50 ENVISAT) were used for the period June 1995 - October 2010, whose distribution in the perpendicular time/baseline plan is shown in Figure 2, where the black and red rhombuses represent the ERS-1/2 and ENVISAT data, respectively. Table 2 shows the main characteristics of the dataset used.

Figure 2 - Distribution in the time/baseline-perpendicular plane of SAR ERS-1/2 and ENVISAT data acquired from ascending orbits
Figure 2 - Distribution in the time/baseline-perpendicular plane of SAR ERS-1/2 and ENVISAT data acquired from ascending orbits on the area of interest. The black and red rhombuses represent the ERS-1/2 and ENVISAT data, respectively.
Figure description

Perpendicular Baseline [m]: -1500 - 1500. Time [year]: 1995 - 2010.

Table 2 - Main characteristics of SAR ERS-1/2 and ENVISAT SAR data used for descending orbits
Table 2 - Main characteristics of SAR ERS-1/2 and ENVISAT SAR data used for descending orbits
Lunghezza d’onda5.6 cm
Orbita di acquisizioneAscendente
Risoluzione spaziale nominale~ 4 m x 20 m
Risoluzione spaziale del dato interferometrico~ 80 m x 80 m
Estensione spaziale~95 km x 60 km
Periodo di osservazionegiugno 1995 – luglio 2010
Numero di acquisizioni utilizzate76
Numero di interferogrammi generati213
Angolo di vista a centro scena~23°