Topic 6D - ML To Help Navigate In Changing Polar Regions

Image from Radarsat-2. Blue: Open Water/ Nilas (OW), Purple: Young Ice (YI), Yellow: First Year Ice (SFYI), Red: Rough First Year Ice/Multi - Year Ice/Ice Berg. Acquired on 30 January 2017, 10:36:35 UTC, showing an area of sea ice in the Arctic

DLR

A Radasat-2 Geocoded Pauli RGB composite image acquired on 30 January 2017, 10:36:35 UTC, showing an area of sea ice in the Arctic

DLR

This is a composit image of extra wide swath acquisitions by Sentinel-1

DLR/Copernicus Sentinel-1 data

This is another composite wide swath image acquired by Sentinel-1, of sea ice

DLR/Copernicus Sentinel-1 data

This image shows sea ice characterisation overlaying the composite sentinel-1 imagery. The yellow shows smooth first year ice, the blue is open water, and the purple is young ice.

DLR/Copernicus Sentinel-1 data

This Sentinel-1 wide swath composite shows a channel in between two islands

DLR/Copernicus Sentinel-1 data

This image shows sea ice characterisation overlaying the composite sentinel-1 imagery. The yellow shows smooth first year ice, the blue is open water, and the purple is young ice.

DLR/Copernicus Sentinel-1 data

This image shows sea ice characterisation overlaying the composite sentinel-1 imagery. The yellow shows smooth first year ice, the blue is open water, and the purple is young ice.

DLR/Copernicus Sentinel-1 data

Two examples of dark spots : (a) Verified oil spill on a SAR image taken on 6 September 2005 close to Ancona , Italy . b) Verified look - alike on a SAR image taken on 25 August 2005 close to Otranto, Italy

DLR

These are Sentinel-1 IW mode images of oil spills in the Mediterranean

DLR/Copernicus Sentinel-1 data

These SAR images of oil spills were detected by the deep neural network architecture Yolov4

Yi - Jie Yang, Suman Singha & Roberto Mayerle, Fully Automated Sar Based Oil Spill Detection Using Yolov4. I GARSS 2021