[Geysers] Geyser update May 13

[diane clark]

hope you feel all better soon!  i have been unable to get to yellowstone thus far this year and i need my "fix" as often as possible!  

Diane Clark Robinson
Administrator
Department of Cell and Neurobiology
USC Keck School of Medicine
1333 San Pablo Street, BMT 401
Los Angeles, CA  90033
phone 323 442 1881
fax 323 442 2840
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On Monday I alluded to the fact that I seemed to be catching a cold. Boy,  
did I ever. Three days mostly lying around, often flat on my back. Now I  am 
enough better that I at least went to Old Faithful where I updated my  personal 
logbook. The more pertinent info:
 
Fan and Mortar have not erupted since night May 6-7.
 
Giant's hot periods seem to be quite uniformly weak.
 
Grand may be slowing down. Ignoring specific eruption times for now and  
presuming all electronic and i.e. times to be accurate, the most recent 15  
intervals have been: 6h48m, 9h08m, 7h00m, 8h35m, 9h53m, 8h33m, 6h36m, 8h41m,  8h48m, 
7h42m, 8h50m, 9h51m, 6h54m, 8h16m, and 6h57m. The last of those was 0917  
today.
 
Beehive provides little info. On May 9 was a presumed double interval of  
30h46m. On the 10th a single of 16h51m. On the 11th another presumed double of  
only 27h24m. No eruption was recorded on the 12th and none as of my  departure 
noonish today.
 
Plume continues to erupt "hourly" plus or minus a few minutes. Plate was  
active today.
 
Since the road over Craig Pass opened today, I zipped over to West Thumb.  
Didn't take very long. Fresh-appearing channels way downslope imply that  
Hillside is active in some fashion. Lakeshore is having eruptions, probably of  very 
small size. In the central part of the area, the only active feature was  
Ledge, which is having pretty strong overflows on unknown intervals (I saw the  
end of one overflow that included bubbling but no actual splashing). Up lake,  
Occasional is active, and undoubtedly so is Lone Pine, which was full but not  
bubbling any that I could see using binoculars... Except for nearshore 
thermal  melting, the lake is still frozen over.
 
All for now. Tomorrow, forecast to reach as warm as 58, I might actually  get 
into the basin again.
 
Scott Bryan
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