Satellite Source: Sentinel 1A
Mode: Interferometric Wide (IW) VV
Resolution: 5x20 meter
Image Date & Time: 07-01-2018 2242 UTC

Confidence: High
Issue Date: 07-02-2018

Region: Atlantic Ocean
Location: 4024'03" N, 7222'13" W
Coverage Area: 8.79 km^2

Remarks:
Possible oil was observed in satellite imagery. This anomaly is unconfirmed 
as oil, but it is believed to be an oil slick that emanated from the Coimbra 
shipwreck since it was connected to that location. The 6.5 nm long slick 
had a fairly large contrast to its surroundings and appeared to be out 
of place even though it was in an area of full of false positives created 
by wind variability and other natural phenomena. Winds were light and 
variable at the time of the image, which do not entirely support the slick'
s orientation; however, its linear orientation and meandering nature was 
supported by light model ocean currents in the vicinity.

Uncertainties:
Due to the close proximity of false positives in the vicinity of the slick 
that also had strong contrast to the surroundings, we are uncertain of 
the slick's more precise areal extent.


Analyst: Velasco


For further information on oil spill response and assessment please visit:
https://response.restoration.noaa.gov/oil-and-chemical-spills/oil-spills