EGU21-2929
https://doi.org/10.5194/egusphere-egu21-2929
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Sentinel-1 InSAR data by LiCSAR system

Milan Lazecky1,3, Yasser Maghsoudi Mehrani1, Scott Watson1, Yu Morishita2, John Elliott1, Andrew Hooper1, and Tim Wright1
Milan Lazecky et al.
  • 1University of Leeds, School of Earth and Environment, Leeds, United Kingdom of Great Britain – England, Scotland, Wales (m.lazecky@leeds.ac.uk)
  • 2Geography and Crustal Dynamics Research Center, Geospatial Information Authority of Japan, Tsukuba 305-0811, Japan
  • 3VSB-TU Ostrava, Czechia

Looking Into the Continents from Space with Synthetic Aperture Radar (LiCSAR) is a system built for large-scale interferometric processing of Sentinel-1 data. LiCSAR automatically produces geocoded wrapped and unwrapped interferograms combining every acquisition epoch with four preceding epochs, and complementary data (coherence, amplitude, line-of-sight unit vectors, digital elevation model, metadata, and atmospheric phase screen estimates by the Generic Atmospheric Correction Online Service, GACOS).

The LiCSAR products are generated in frame units where a standard frame covers ~220x250 km, at 0.001° resolution (WGS-84 coordinate system). Frames are continuously updated for tectonic and volcanic priority areas. In 2020, the LiCSAR system covered about 1,500 global frames in which we have processed over 89,000 Sentinel-1 acquisitions and generated over 300,000 interferograms. Among these, 470 frames cover 1,024 global volcanoes. We aim to cover the global seismic mask defined by the Committee on Earth Observation Satellites (CEOS), but focus initially on the Alpine-Himalayan belt and East African Rift.

We serve the products as open and freely accessible through our web portal: https://comet.nerc.ac.uk/comet-lics-portal and aim to provide them to shared infrastructures as the European Plate Observing System (EPOS). We also generate rapid response coseismic interferograms for earthquakes with moment magnitude (Mw)> 5.5  a few hours after the postseismic data become available, and we update frames covering active volcanoes twice per day.

Our products can be directly converted to displacement time series and velocities using  the LiCSBAS time series analysis software. We present solutions implemented in LiCSAR, and show several case studies that use LiCSAR and LiCSBAS products to measure tectonic and volcanic deformation.

How to cite: Lazecky, M., Maghsoudi Mehrani, Y., Watson, S., Morishita, Y., Elliott, J., Hooper, A., and Wright, T.: Sentinel-1 InSAR data by LiCSAR system, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-2929, https://doi.org/10.5194/egusphere-egu21-2929, 2021.

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