[Geysers] Geyser report August 16

[TSBryan at aol.com]

Finally, a fairly good amount of time in the UGB. To report first about  
Giant-Grotto (bearing in mind that mostly I have NOT been there). The last  full 
marathon eruption was apparently that of Thursday-Friday last week. Since  then 
Grotto's tendency has been to have a "mini-marathon" sort of eruption,  those 
things that are also referred to as 5K and 10K eruptions, with durations  
mostly between 6 and 12 hours (one of perhaps 15 hours). With that, the first  
Grotto Group activity after such an eruption has sometimes been either a solo  
Grotto Fountain (as happened yesterday) or a Grotto Fountain triggering a short 
 duration Grotto.
 
With all this, the reaction by Giant has been variable, ranging from series  
of short weak hot periods to things like yesterday, when there was a hot 
period  with a duration of 16 minutes (yes, 16) but which involved relatively 
little  action by Mastiff or Giant.
 
Yesterday, Grotto started in midday and ended sometime "well before 0500"  
today. The Giant hot period at 0714 was no doubt the recovery. It lasted  just 
3m 25s and had only light overflow by Mastiff (which was basically  invisible 
due to steam and fog). At 0922 was another hot period that was a  bit better, 
with a duration of 8m 45s and some Mastiff surging to maybe 2 feet.  And then 
at 1148, a hot period with a duration of 4m 12s and Mastiff  briefly to 3 feet 
with heavier overflow. Finally (for me), a hot period  unanticipated at 
1257ns, duration about 8 minutes and some Mastiff surging to 4  or 5 feet.
 
Grotto Fountain had started at 1209 (d = 21 min) and Grotto at 1224. Grotto  
was still i.e. at 1320 at least.
 
What seems to be happening to at least some extent is that the Grotto-Giant  
system doesn't quite know what to do. Anyhow, I left the UGB just before 1400  
and if Giant has gone since then, I wouldn't be highly surprised.
 
Other things:
 
Plume was at 0906, 1004, ----, 1204, and 1304.
 
It is at least three days in a row that Beehive has erupted between 1200  and 
1300. Today it was 1230 after an Indicator of 19 minutes.
 
Aurum had a short interval of 4h 31m.
 
Tilt's Baby seems to be holding to intervals near 1 1/2 hours. Today it was  
called at 0853, 1021, ----, and 1331.
 
Grand had been at 0239E, then not until 1221 (2 bursts).
 
Oblong also had a long interval of nearly 6 hours, from 0709 to 1252.
 
Daisy was missed early due to the fog, but we did have it at 1048 and  1352.
 
But Riverside was short, from 0720ns to 1313.
 
Both inbound and outbound, the only eruption I saw in the LGB was  Clepsydra. 
But, if this might be passed along, Great Fountain was in _very_  early 
overflow at 1404.
 
Scott Bryan
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