Relatively to the Upper Tena Valley test site, a space-born analysis using the PSInSAR technique, was processed by Altamira information (http://www.altamira-information.com/), available by the Framework Agreement between NextData Project and Terrafirma (the agreement was signed in July 2014. The SAR images were selected in an ERS-1/2 descending dataset that includes images spanning the April 1995 and the December 2000 time period. The ERS-1/2 satellite acquires images characterized by: - Band acquisition: C Band - Wavelength (cm): 5.6 - Incident angle (°): 23° - Resolution azimuth/range (m): ≈ 6/24 - Revisit time (days): 35 - Life status: 1992 - 2001 - Space agency: ESA The archived PS measurements are provided in geocoded coordinates (UTM WGS84), and are reported in an ASCII format.
Relatively to the Upper Tena Valley test site, a space-born analysis using the PSInSAR technique, was processed by Altamira information (http://www.altamira-information.com/), available by the Framework Agreement between NextData Project and Terrafirma (the agreement was signed in July 2014). The ASAR-Envisat images were selected in an Envisat ASAR descending dataset that includes images spanning the July 2001 and the September 2007 time period. The ASAR-Envisat satellite acquires images characterized by: - Band acquisition: C Band - Wavelength (cm): 5.6 - Incident angle (°): 23° - Resolution azimuth/range (m): ≈ 4/20 - Revisit time (days): 35 - Life status: 2002 - 2010 - Space agency: ESA The achieved PS measurements are provided in geocoded coordinates (UTM WGS84), and are reported as ASCII format.
The Upper Tena Valley is located in the Central Spanish Pyrenees, between Sallent de Gallego and El Portalet municipality. This area is characterized by hundreds landslides different in type and in particular by two deep-seated slides whose development is due to the destabilization of the over steepened valley walls after the retreat of the glaciers (Herrera et al., 2013). This territory has been investigated by geomorphological investigation, in situ geotechnical investigation of the portion of the area that is involved in the two deep-seated slides, to exploit the possibility to detect a relationship between change of the rate of the landslides displacement and climatic parameters. Furthermore this territory has been investigated by space-borne technique. In particular, the SAR images were processed by PSInSAR technique by Altamira information (http://www.altamira-information.com/), available by the Framework Agreement between NextData Project and Terrafirma (the agreement was signed in July 2014).
Relatively to the Upper Tena Valley test site, a space-born analysis using the PSInSAR technique, was done by Altamira information (http://www.altamira-information.com/), available by the Framework Agreement between NextData Project and Terrafirma (the agreement was signed in July 2014). The SAR images were selected in an ERS-1/2 ascending dataset that includes images spanning the June 1995 and the July 1998 time period. The ERS-1/2 satellite acquires images characterized by: - Band acquisition: C Band - Wavelength (cm): 5.6 - Incident angle (°): 23° - Resolution azimuth/range (m): ≈ 6/24 - Revisit time (days): 35 - Life status: 1992 - 2001 - Space agency: ESA The archived PS measurements are provided in geocoded coordinates (UTM WGS84), and are reported in an ASCII format.
The SAR ground deformation time series relevant to Upper Tena Valley include deformation data obtained from the ERS-1/2 satellite acquisition (produced by Altamira and available by the Framework Agreement between NextData Project and Terrafirma, signed in July 2014), and elaborated by PSInSAR technique. In particular, the analysis provided 2742 measure points, for the observed period from April 1995 to December 2000. The analysis provided for each PS: - CODE - East and North UTM WGS84 coordinates (m); - Azimuth and Range coordinates [Azimuth/Range.]; - Height (m); - Deformation Velocity (cm/yr.) [VEL]; - Temporal interferometric coherence [COHERENCE]; - Standard deviation [STDDEV]; - Unwrapping group; - Deformation Data (mm), related to the date of the exploited SAR images. The deformation time series present a monthly temporal sampling, and provide long time series of deformation, allowing to follow the evolution of surface displacements over time.
Relatively to the Upper Tena Valley test site, a space-born analysis using the PSInSAR technique, was processed by Altamira information (http://www.altamira-information.com/), available by the Framework Agreement between NextData Project and Terrafirma (the agreement was signed in July 2014). The SAR images were selected in an ASAR-Envisat ascending dataset that includes images spanning the October 2002 and the July 2007 time period. The ASAR-Envisat satellite acquires images characterized by: - Band acquisition: C Band - Wavelength (cm): 5.6 - Incident angle (°): 23° - Resolution azimuth/range (m): ≈ 4/20 - Revisit time (days): 35 - Life status: 2002 - 2010 - Space agency: ESA The achieved PS measurements are provided in geocoded coordinates (UTM WGS84), and are reported as ASCII format.
The SAR ground deformation time series relevant to Upper Tena Valley SAR include deformation data obtained from ERS-1/2 satellite acquisition (produced by Altamira and available by the Framework Agreement between NextData Project and Terrafirma, signed in July 2014), and elaborated by PSInSAR technique. In particular, the analysis provided 600 measure points, for the observed period from June 1995 to July 1998. The analysis provided for each PS: - CODE - East and North UTM WGS84 coordinates (m); - Azimuth and Range coordinates [Azimuth/Range.]; - Height (m); - Deformation Velocity (cm/yr.) [VEL]; - Temporal interferometric coherence [COHERENCE]; - Standard deviation [STDDEV]; - Unwrapping group; - Deformation Data (mm), related to the date of the exploited SAR images. The deformation time series present a monthly temporal sampling, and provide long time series of deformation, allowing to follow the evolution of surface displacements over time.
The SAR ground deformation time series relevant to Upper Tena Valley include deformation data obtained from ASAR-Envisat satellite acquisition in descending orbit (produced by Altamira and available by the Framework Agreement between NextData Project and Terrafirma, signed in July 2014), and elaborated by PSInSAR technique. In particular, the analysis provided 1431 measure points, for the observed period from July 2001 to September 2007. The analysis provided for each PS: - CODE - East and North UTM WGS84 coordinates (m); - Azimuth and Range coordinates [Azimuth/Range.]; - Height (m); - Deformation Velocity (cm/yr.) [VEL]; - Temporal interferometric coherence [COHERENCE]; - Standard deviation [STDDEV]; - Unwrapping group; - Deformation Data (mm), related to the date of the exploited SAR images. The deformation time series present a monthly temporal sampling, and provide long time series of deformation, allowing to follow the evolution of surface displacements over time.
The SAR ground deformation time series relevant to Upper Tena Valley include deformation data obtained from the ERS-1/2 satellite acquisition (produced by Altamira and available by the Framework Agreement between NextData Project and Terrafirma, signed in July 2014), and elaborated by PSInSAR technique. In particular, the analysis provided 926 measure points, for an observed period from October 2002 to July 2007. The analysis provided for each PS: - CODE - East and North UTM WGS84 coordinates (m); - Azimuth and Range coordinates [Azimuth/Range.]; - Height (m); - Deformation Velocity (cm/yr.) [VEL]; - Temporal interferometric coherence [COHERENCE]; - Standard deviation [STDDEV]; - Unwrapping group; - Deformation Data (mm), related to the date of the exploited SAR images. The deformation time series present a monthly temporal sampling, and provide long time series of deformation, allowing to follow the evolution of surface displacements over time.
There is a systematic lack of information on the effects of the climate and environmental changes on the frequency and the intensity of landslides and their triggering phenomena. The problem is particularly severe in mountain areas, where natural and human-driven climatic and environmental changes may alter significantly the frequency and the intensity of the slope processes, with largely unknown short and long-term effects on the landscapes and the environment. HAMMER project intends to cope with this topic by collecting accurate and long term time series of ground surface and sub-surface deformation, and analyzing eventual changes of the deformation trend associated with meteorological and climatic variables over time. The project HAMMER will focus mainly on the following study areas: Italian Western Alps, Apennines, Pyrenees, and Atacama desert, Andes.