Hi Ray, FYI- The youtube video (posted link reference) is a poor resolution version. It is worthless (for detail analysis). Either their source reference or their youtube upload resolution settings were set so the original footage fidelity was lost.
There is a much higher resolution video feed (in hi-def) that is a significant difference. To do forensics on the shower of bubbles emanating from the ground surface it is optimal with a full 27" true color GPU based display, 2560 x 1440 resolution & 32-Bit true Color (each pixel is stored in 4 bytes: ARGB8888 standard). The water level was about 4 feet deep (900ft at ES height at time of imaging - 896ft elevation at the road/soil level). You can see the dirt road under the semi-occluded water. You can see the origin of the bubble froth burst start in a smaller diameter condition at the soil surface depth. As the bubble froth cluster moves upward to the surface, it spreads like a cone. When it breaks the surface it spreads into a wide dispersal pattern.
These two images show the resolution difference between what you posted and a higher def resolution source. I don't know how this looks on non-high end display systems, but the difference is very stark with a good GPU & display system.
Here's the Low Resolution (from youtube link in post):
Here's a High Resolution (from hi-def source):
This image shows soil surface & road in front of the Emergency Spillway.
