[Geysers] Another Grotto....

[TSBryan at aol.com]

In a message dated 8/10/2006 6:30:47 PM Mountain Standard Time,  
fanandmortar at hotmail.com writes:

Steve  Robinson called me from the park today to say that the Grotto Lynn 
reported  yesterday turned out to be a 12-hour marathon.  Grotto started another  
eruption today, 8/10, at 0947.



and furthermore... Who knows what happened during the night, but Lynn also  
reported a moderately long hot period at 06xx. While I was in, there was 
another  hot period at 0829ie (d < 3 min), then 0945 (d = 5m 53s but quite weak  
overall), and 1102 (d ~ 2 min).
 
I wasn't in the UGB for long, but there were Plumes with intervals of 61,  
52, and 532 minutes.
 
I spent most of my day in the Lower Basin, and here is something that I'd  
like input on if possible-- I recall that somebody reported similar activity a  
month of two ago and would appreciate a repeat of that recollection.
 
I went out to Narcissus. At approximately 1200, it was about 6 inches below  
overflow. Saying "Oh, well," I went on down to Underhill Geyser. After finding 
 it about as before (durations longer than the intervals, one interval of 5 
1/2  minutes), I returned to Narcissus. And there was water -- a LOT of it -- 
flowing  down both runoff channels. But the water was still/again fully 6 
inches below  overflow. At 1229 the water very abruptly rose, poured a great volume 
of water  over all outflow areas, pulsed vigorously and splashed as high as 2 
feet. It did  this for about 2 minutes. I've never seen Narcissus do anything 
so vigorous  without an eruption, so I entered the time in my notebook, as 
1229. But then it  stopped, and the water dropped down, you guessed it, about 6 
inches. I waited.  At 1308 the same event recurred. No eruption.
 
This is completely "aberrant" behavior in my experience. Does it sound  
simiar to anybody?
 
Scott Bryan
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