LiCSAR: An Automatic InSAR Tool for Measuring and Monitoring Tectonic and Volcanic Activity

Remote Sensing - Tập 12 Số 15 - Trang 2430
Milan Lazecký1, Karsten Spaans2, Pablo J. González3,4, Yasser Maghsoudi1, Yu Morishita1,5, F. Albino6, John R. Elliott1, Nicholas Greenall7, Emma Hatton8, Andrew Hooper1, Daniel Juncu1, Alistair McDougall8, R. J. Walters9, C. Scott Watson1, Jonathan Weiss1,10, Tim Wright1
1COMET, School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, UK
2SatSense Ltd., 103 Clarendon Rd, Leeds LS2 9DF, UK
3COMET, Department of Earth, Ocean and Ecological Sciences, University of Liverpool, Liverpool L69 3BX, UK
4Volcanology Research Group, Department of Life and Earth Sciences, IPNA-CSIC, 38206 Tenerife, Spain
5Geography and Crustal Dynamics Research Center, Geospatial Information Authority of Japan, Tsukuba 305-0811, Japan
6COMET, School of Earth Sciences, University of Bristol, Senate House, Tyndall Ave, Bristol BS8 1TH, UK
7Independent Software Developer, Leeds LS2 9JT, UK
8Independent Researcher, Leeds LS2 9JT, UK
9COMET, Department of Earth Sciences, Durham University, Durham DH1 3LE, UK
10Institute of Geosciences, University of Potsdam, 14469 Potsdam, Germany

Tóm tắt

Space-borne Synthetic Aperture Radar (SAR) Interferometry (InSAR) is now a key geophysical tool for surface deformation studies. The European Commission’s Sentinel-1 Constellation began acquiring data systematically in late 2014. The data, which are free and open access, have global coverage at moderate resolution with a 6 or 12-day revisit, enabling researchers to investigate large-scale surface deformation systematically through time. However, full exploitation of the potential of Sentinel-1 requires specific processing approaches as well as the efficient use of modern computing and data storage facilities. Here we present Looking Into Continents from Space with Synthetic Aperture Radar (LiCSAR), an operational system built for large-scale interferometric processing of Sentinel-1 data. LiCSAR is designed to automatically produce geocoded wrapped and unwrapped interferograms and coherence estimates, for large regions, at 0.001° resolution (WGS-84 coordinate system). The products are continuously updated at a frequency depending on prioritised regions (monthly, weekly or live update strategy). The products are open and freely accessible and downloadable through an online portal. We describe the algorithms, processing, and storage solutions implemented in LiCSAR, and show several case studies that use LiCSAR products to measure tectonic and volcanic deformation. We aim to accelerate the uptake of InSAR data by researchers as well as non-expert users by mass producing interferograms and derived products.

Từ khóa


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Remote Sensing

Tập 12 Số 15

2430

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