Information provided below are generated automatically by computers and were not validated a posteriori by a scientific analysis. Results are issued from a complex and unsupervised processing. Consequently they may be inaccurate or even erroneous. In particular, solution computed for the most recent dates are potentially less robust. For inquiries, please contact the authors.
Institutions and individuals involved with the production of these results shall not in any way be responsible for possible erroneous results or failure of the web service.
For usage in scientific works, please cite the papers listedbelow.Software repository ongithub.
Contact:amster@ecgs.lu
Time series "double differential displacement analysis"
Sentinel-1
Measurement of displacement between 2 points: The time series graphics are available for horizontal (East-West), vertical (Up-down) and line of sight (ascending and descending) displacement.
The pairs of points are located around differents areas (LagunaMaule, Domuyo, ...).
The buttons above each maps allow to switch between different view: S1 for Sentinel 1 amplitude view,
Maps for reliefs view and Earth for satellite view.
* The processing “With Coherence threshold” automatically rejects the interferometric pairs affected by low coherence measured at Laguna del Maule region (LdM). It results that several images may not contribute to time series, typically during the Austral Winter.
The processing “Without Coherence threshold” makes uses of all the interferometric pairs, including some that may have very low coherence over the LdM area.
WARNINGS:
Applying Coherence restriction (i.e. time series "With Coherence Threshold”) may remove several interferometric pairs, resulting in interferometric pairs or patches of pairs not connected to the whole set of data (see the baseline plot) and hence inaccurate MSBAS inversion (artificial offset or oscillations). Keeping the interferometric pairs with low coherence during the Austral Winter (i.e. time series "Without Coherence Threshold”) may also affect MSBAS inversion (e.g. amplitude under or over estimation, artificial oscillations etc…).
* The processing “With Coherence threshold” automatically rejects the interferometric pairs affected by low coherence measured at Laguna del Maule region (LdM). It results that several images may not contribute to time series, typically during the Austral Winter.
The processing “Without Coherence threshold” makes uses of all the interferometric pairs, including some that may have very low coherence over the LdM area.
WARNINGS:
Applying Coherence restriction (i.e. time series "With Coherence Threshold”) may remove several interferometric pairs, resulting in interferometric pairs or patches of pairs not connected to the whole set of data (see the baseline plot) and hence inaccurate MSBAS inversion (artificial offset or oscillations). Keeping the interferometric pairs with low coherence during the Austral Winter (i.e. time series "Without Coherence Threshold”) may also affect MSBAS inversion (e.g. amplitude under or over estimation, artificial oscillations etc…).
* The processing “With Coherence threshold” automatically rejects the interferometric pairs affected by low coherence measured at Laguna del Maule region (LdM). It results that several images may not contribute to time series, typically during the Austral Winter.
The processing “Without Coherence threshold” makes uses of all the interferometric pairs, including some that may have very low coherence over the LdM area.
WARNINGS:
Applying Coherence restriction (i.e. time series "With Coherence Threshold”) may remove several interferometric pairs, resulting in interferometric pairs or patches of pairs not connected to the whole set of data (see the baseline plot) and hence inaccurate MSBAS inversion (artificial offset or oscillations). Keeping the interferometric pairs with low coherence during the Austral Winter (i.e. time series "Without Coherence Threshold”) may also affect MSBAS inversion (e.g. amplitude under or over estimation, artificial oscillations etc…).
* The processing “With Coherence threshold” automatically rejects the interferometric pairs affected by low coherence measured at Laguna del Maule region (LdM). It results that several images may not contribute to time series, typically during the Austral Winter.
The processing “Without Coherence threshold” makes uses of all the interferometric pairs, including some that may have very low coherence over the LdM area.
WARNINGS:
Applying Coherence restriction (i.e. time series "With Coherence Threshold”) may remove several interferometric pairs, resulting in interferometric pairs or patches of pairs not connected to the whole set of data (see the baseline plot) and hence inaccurate MSBAS inversion (artificial offset or oscillations). Keeping the interferometric pairs with low coherence during the Austral Winter (i.e. time series "Without Coherence Threshold”) may also affect MSBAS inversion (e.g. amplitude under or over estimation, artificial oscillations etc…).
Others
Location
UD-EW No Coherence Threshold (*)
UD-EW
LOS Ascending
LOS Descending
Location
UD-EW No Coherence Threshold (*)
UD-EW
LOS Ascending
LOS Descending
* The processing “With Coherence threshold” automatically rejects the interferometric pairs affected by low coherence measured at Laguna del Maule region (LdM). It results that several images may not contribute to time series, typically during the Austral Winter.
The processing “Without Coherence threshold” makes uses of all the interferometric pairs, including some that may have very low coherence over the LdM area.
WARNINGS:
Applying Coherence restriction (i.e. time series "With Coherence Threshold”) may remove several interferometric pairs, resulting in interferometric pairs or patches of pairs not connected to the whole set of data (see the baseline plot) and hence inaccurate MSBAS inversion (artificial offset or oscillations). Keeping the interferometric pairs with low coherence during the Austral Winter (i.e. time series "Without Coherence Threshold”) may also affect MSBAS inversion (e.g. amplitude under or over estimation, artificial oscillations etc…).
References: please cite
- d’Oreye N., Derauw D., Libert L., Samsonov S., Dille A., Nobile A., Monsieiurs E., Dewitte O., Kervyn F. (2019). Automatization of InSAR mass processing using CSL InSAR Suite (CIS) software for Multidimensional Small Baseline Subset (MSBAS) analysis: example combining Sentinel-1 and Cosmo-SkyMed SAR data for landslides monitoring in South Kivu, DR Congo. Abstract, 13-17 May 2019, ESA Living Planet Symposium 2019, Milano, Italy
- Samsonov, S., A. Dille, O. Dewitte, F. Kervyn, and N. d'Oreye (2020). Satellite interferometry for mapping surface deformation time series in one, two and three dimensions: A new method illustrated on a slow-moving landslide. Engineering Geology, (266), 105471, doi:10.1016/j.enggeo.2019.105471.
- Derauw D., d’Oreye N., Jaspard M., Caselli A. and Samsonov S. Ongoing automated Ground Deformation monitoring of Domuyo - Laguna del Maule area (Argentina) using Sentinel-1 MSBAS time series: Methodology description and first observations for the period 2015 – 2020. J. South Am. Earth Sc., Vol. 104, 102850. Link to paper
