Lab 4: InSAR Processing

Before you Start:

Please look through Lectures 12 and 13 before you get started with this lab. Those lectures will walk you through the concepts and workflow of differential InSAR processing. In addition, please read through pages 312 – 339 in (Woodhouse, 2016) to refresh your memory on InSAR. For further reading on InSAR, please refer to the Further Reading tips on this website.

Goals of this Lab:

This labs will expose you to the InSAR processing workflow within the popular ESA Sentinel Applications Platform (SNAP). The advantages of the SNAP tool include (1) its graphical user interface; (2) the easy-to-access, free-of-charge, and public domain nature of the SNAP tool; and (3) the fact that SNAP is an integrative multi-sensor toolbox and enables processing data from all Sentinel sensors within one joint processing platform.

In this lab, we will analyze a pair of Sentinel-1 images that bracket the devastating 2016 Kumamoto earthquake, whose 6.5 magnitude foreshock and 7.0 main shock devastated large areas around Kumamoto, JP on April 14th and 16th, respectively. You will learn how to process Sentinel-1 data all the way to a differential interferogram. You will also learn how to interpret the information contained in d-InSAR data.

Please download the following lab instructions before starting the lab:


Supplement: Want to Know More About How InSAR is Seeing Earthquakes?

If you want to know a bit more about how InSAR is seeing Earthquakes I want to direct your attention to a YouTube Channel named “Visible Geology”. This channel features visual examples of how earthquake parameters translate to interferometric phase. Below, you find one of their instructional videos. Navigate to the main channel to find more.

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