This training is in the past.
SNAP2StaMPS – Data preparation for StaMPS PSI processing with SNAP
During this webinar, you will learn how to prepare Sentinel-1 input data for StaMPS persistent scatterers processing using SNAP and SNAP2StaMPS.
Background
Land subsidence
monitoring is very important for urban areas which are susceptible to ground
instabilities for both local and regional scale. The reasons for this
phenomenon can be related to either anthropogenic activities (e.g. excess
groundwater pumping, subterranean mining processes, rapid urbanisation) or
natural-geological ones (e.g. hydro-compaction in low density soils,
liquefaction, crustal deformation).
Land subsidence
in Mexico City, which is caused by groundwater over-exploitation, is estimated
to be more than 9 meters over the last century, resulting in damages to
buildings, streets, sidewalks, sewers, storm water drains and other
infrastructure. Previous studies using ERS data, showed a maximum subsidence
rate larger than 30 cm/year in some parts of the city. Since the city is
partially built on the area of a former lake (Lago Texcoco) and it rests on the
heavily saturated clay, it is collapsing due to the over-extraction of
groundwater. Current subsidence rates estimated using Sentinel-1 SAR data are
around 2.5 cm/month.
Satellite radar
interferometry (InSAR) is an effective method that allows monitoring of ground
displacement over large areas, giving insight into the spatial distribution of
the subsidence rates. Differential interferometric SAR covers range of methods varying
in complexity and accuracy. We have already addressed a simple DInSAR
processing in the webinar on Land
Subsidence Mapping with Sentinel-1 in 2018.
Persistent
Scatterer Interferometry (PSI) is a powerful technique able to measure and
monitor displacements of the Earth’s surface over time with high accuracy from interferogram
time-series. StaMPS is a widely used
powerful package which includes persistent scatterer methods, among others. It
is compatible with the TRAIN software and therefore allows to incorporate
various tropospheric correction methods in the processing workflow.
In this webinar we will not address the processing with StaMPS, but rather the preparation of the data for StaMPS ingestion using SNAP and SNAP2StaMPS routines developed by M. Foumelis, J. M. Delgado Blasco, et al (2018).
Repeat the webinar
Questions and Answers
View and download this webinar's Q&A session document.
Type
Webinar
Duration
1 hour 20 minutes + Q&A
Training time
14:30 - 16:00 CET
Training date
Thursday 10th of December 2020
Max. no. participants
500