In this Envisat Advanced Synthetic Aperture Radar (ASAR) product for 29 April 2010, advanced processing methods have been performed to display ocean surface roughness variations and Doppler-derived ocean surface radial velocities around the oil spill area in the Gulf of Mexico.
Smooth surfaces appear as black patches inside the oil spill and in the very low wind region east of the spill, where the flow analysis is not possible. As visible, the spill still appears relatively confined around its point of origin and is still north of the Loop Current.