I had heard some years ago that it was the Reed sea rarther than the red - don't know where but I do remember something about the likelyhood that some kind of tsunmi type event may have happened due to the eruption you mentioned. The water of the Reed sea being dragged back out to the Ocean, leaving a dry sea bed, before returning in the form of a huge 'Tsunami'type wave. Although I gathered the Reed sea was more of a small river ?
I guess this tit bit I heard was related to the research u guys are telling us about no?
Thanks, v interesting , will check it out, love a bit of biblical archeology despite my atheism!