You are here

Sentinel-2A: to monitor changes of the underwater reefs

Marine Monitoring

The Copernicus Sentinel-2A satellite has the capability to look into the water column, to monitor coral health and see whether reefs are undergoing change. Initial results show that the Sentinel satellite can detect the effects from 780km up.


Current, anomalously high temperatures are driving a huge coral bleaching event across the globe.


"With Sentinel-2A, we can see 10-15m into the water, which you just couldn't see if you were using the green band, for example", explains Dr Benjamin Koetz from the European Space Agency.


Testing of Sentinel-2A capabilities for this objective is done under Sen2Coral ESA project, which is analysing repetitive satellite images of the volcanic Island Fatu Huku in French Polynesia.


The results give expectations that ultimately, if the Sentinel-2A techniques can be fully validated, it should be possible to automate the detection of change at reefs.


Scientists could then use the Sentinel satellites to alert them, not just to possible bleaching but to other deleterious impacts such as pollution incidents and nutrient run-off from land.




(Source BBC)

Share with: