OFVC Geyser Log for September 16 through September 30, 1999.

Transcribed By Lynn Stephens


Geyser Log abbreviations        
ie      in eruption (wasn't observed at start)
d       duration
I       interval
h       height
3h45m15s        "3 hours, 45 minutes, 15 seconds (for instance)"
>       greater than
<       less than
ns      "near start (the top of a steam column is observed still rising--when in
doubt, ie is use
d)"
ini     "initial-used for Lion, for instance"
MJR     major
min     minor
ind     indicator-used for Beehive
vr      "Visitor Report-it can be logged, (a reliable report) but the time might
not be accurate"
B       "bursts as in Grand or Plume, recorded for instance as 3B"
of      overflow
p       "pause, time between 1 meter boil and burst from Great Fountain"        

Grand Eruption Codes:                                                           
Interval type   Dn      Grand erupted n Turbans after long interval     
D0      Grand erupted on long Turban interval                   
N       No long Turban interval observed                        
Starting Geyser         T       Turban                                  
G       Grand                                   
Bursts          n       n bursts  
n+m     n bursts plus m afterbursts                             
*       long 2nd burst (d>1m15s)                                
#       long 3rd brust (d>1m15s)                 
C       Continue                                        
Q       Quit                                    

----------------------------------------------------------------------------------------
Time         Interval Duration Preplay Height Prediction
09/16/99        Old Faithful    7:38                    L       7:35            
09/16/99        Old Faithful    8:58            1:20    4:16    8:54    135     9:03
09/16/99        Old Faithful    10:28           1:30    4:02    10:20   140     10:26
09/16/99        Old Faithful    11:55           1:27    3:44    11:48   120     11:51
09/16/99        Old Faithful    13:21           1:26    4:07    13:03   145     13:11
09/16/99        Old Faithful    14:43           1:22    4:17    ---     130     14:46
09/16/99        Old Faithful    16:17           1:34    3:58    14:06   150     16:11
09/16/99        Old Faithful    17:37           1:20    3:55    17:37   110     17:38
09/16/99        Old Faithful    19:00           1:23    4:11    not seen                18:57
09/16/99        Old Faithful    20:21           1:21                            20:26
09/16/99        Old Faithful    21:22           1:01                            


09/16/99        Artemisia       16:14   ie                                      
09/16/99        Atomizer        14:47                   minor; d-45s                    
09/16/99        Atomizer        15:50                   minor                   
09/16/99        Atomizer        16:48                   major
09/16/99        Aurum   9:46    ie              
09/16/99        Aurum   13:28                   
09/16/99        Aurum   16:28                   
09/16/99        Aurum   17:18                   
09/16/99        Beehive 22:22                   
09/16/99        Beehive's Indicator     8:02                    
09/16/99        Beehive's Indicator     12:39   ie              
09/16/99        Beehive's Indicator     14:46                   d=21; logged as Beehive but d too long
09/16/99        Beehive's Indicator     17:09   ie              end 17:10
09/16/99        Beehive's Indicator     22:17   ie