Can anyone point me in the right direction for scientific articles discussing the mechanisms behind shallow water blackout?
I feel like there are levels to the dangers behind shallow water blackout. I'm still fairly a beginner, and in SoCal 90% of my dives are 0-30 ft and under a minute, with plenty of recovery time. From the preliminary research I've done, the majority of blackouts are happening to those extremely experienced divers, reaching depths and bottom times far beyond my capabilities.
If I decide to go out on my own, and stay in the shallow reef at 15 - 20 ft deep, is that still as big of a risk as a 70+ ft dive? Surely diving for halibut in 10ft of water alone is safe? Again, if anyone can offer a scientific, physiological perspective that would be greatly appreciate.
I am not knocking the IMPORTANCE and SAFETY of never diving alone and ALWAYS diving with buddy. I stick to that rule 95% of the time. I am merely seeking to understand the varying levels of risk, on a physiological level, as you dive deeper and longer. Thanks in advance.

Mark