Saturday, August 27, 2016

Kathmandu and NEPAL Fringes

This is old, from the old earthquake, but I thought it is interesting and share it with you.

  • Title Kathmandu fringes
  • Released 29/04/2015 4:54 pm
  • Copyright Contains Copernicus data (2015)/R. Grandin/IPGP/CNRS
  • Description Sentinel-1A interferogram over Kathmandu, Nepal, showing deformation induced by the 25 April 2015 earthquake. East–west ‘fringes’ cross the city, with each coloured fringe corresponding to 2.8 cm of ground displacement (both uplift and subsidence). The interferogram combines two Sentinel-1A images from 17 and 29 April 2015.

    Correspondingly, for NEPAL as a whole, see below:

    • Title Nepal earthquake deformation
    • Released 29/04/2015 5:16 pm
    • Copyright Contains Copernicus data (2015)/ESA/DLR Microwaves and Radar Institute/GFZ/e-GEOS/INGV–ESA SEOM INSARAP study
    • Description Interferogram over Kathmandu, Nepal, generated from two Sentinel-1A scans on 17 and 29 April 2015 – before and after the 25 April earthquake. Each  ‘fringe’ of colour represents about 3 cm of deformation. The large amount of fringes indicates a large deformation pattern with ground motions of 1 m or more.
  • Title Nepal earthquake
  • Released 29/04/2015 4:50 pm
  • Copyright Contains Copernicus data (2015)/ESA/Norut/PPO.labs/COMET–ESA SEOM INSARAP study
  • Description Combining two Sentinel-1A radar scans from 17 and 29 April 2015, this interferogram shows changes on the ground that occurred during the 25 April earthquake that struck Nepal. An overall area of 120x100 km has moved – half of that uplifted and the other half, north of Kathmandu subsided. Vertical accuracy is a few cm.

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