[Geysers] Pat Snyders ledge photo

[TSBryan at aol.com]

In a message dated 2/23/2006 8:04:24 AM Pacific Standard Time,  
riozafiro at comcast.net writes:

So, if  my memory is correct, that photo was taken either Aug. 12 or 13, more 
likely  the 13th. So is it possible this is one of the last Ledge photos 
before the  dormancy? That would be really very cool, especially now that I 
appreciate  it.
Pat S.




I decided to send this to the list, because if Pat's guess as to the date  of 
her photo (August 13, 1974) is correct, then this is very likely the LAST  
(maybe next to last eruption) of Ledge before that seasons major, basin-wide  
disturbance.
 
I have the complete log of Ledge eruptions for the entire (May 23 through  
October 2, 1974) season in my article about Norris in Transactions volume VII.  
On August 13, Ledge erupted at 1103. The next day, when the disturbance was  
underway, Ledge was entered by George Algard into the logbook as "In heavy  
steam phase (billowing)". Unfortunately, he did not record the time of that  
observation, but I'm pretty sure it was morning. Up to that time, Ledge had been  
averaging around 14 hours between eruptions. Therefore, I suspect that this  
billowing steam was the aftermath of a "normal" eruption that started around  
0100 on the 14th _or_ action that was triggered by the onset of the  
disturbance.
 
Summary: Pat's photo probably does show the last pre-disturbance eruption  
that Ledge had untile it went through a slight recovery. In the following days  
there was minor activity. The first decent eruption was on September 4 
(somewhat  weak). Then it may have erupted the following night, had a minor eruption 
on  September 13, probably had decent 1 or 2 decent eruptions on September 
24-25,  and (at the the end of the season's records) "Finally... beautiful 
eruption" on  October 2.
 
Fond memories of my only summer as a Norris naturalist.
 
Scott Bryan

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