[Geysers] More Oblong series--1988 Landis Report

[Lynn Stephens]

Here's part of what Phil Landis wrote in his 1988 report:
 
"These initial eruptions of a possible series of eruptions lated an average of 7 minutes...The second eruption of a series followed in an average 2h14m...These eruptions usually occurred from a pool level near rim top though on occasion from a level 1-2 feet down or an on overflowing pool.  Second eruptions of a series were generally stronger than the first and had a longer average duration of 8 minutes.  the eruption form was the same as the initial eruption.  Third eruptions of a series followed the second after an average interval of 35 minutes, and had durations of only 6 1/2 minutes.  Now the pool took 3-4 hours to recover to near rim top.  during the first half of the summer there was only one eruption per series.  From August on there was the possibility of a second or maybe even a third eruption, though the single eruptions were still most common.  The average interval between observed series (start to sarts) was 25 hours (page 292).  "Known" intervals were visually obtained or obtaioned through use of markers, and their average was 26 hours.  Note the random bell-shaped curve to the intervals, and yet I assume that some connection exists with Giant, but I have no proof so far."
 
Phil did not include any comments about Oblong in his 1987 report.
 
Lynn Stephens
 


From: TSBryan at aol.com
Date: Fri, 10 Jun 2011 11:03:37 -0400
To: geysers at lists.wallawalla.edu
Subject: [Geysers] More Oblong series



As was suggested, the early issues of The Sput contain a bit of info about Oblong erupting in series. The following is from 1988 (I failed to check just which issue -- sorry):
 
Oblonq -- Enjoyably Erratic
Oblong is typically ranging from 24 to 48 hours between eruptive
episodes. The average interval is likely near 30 hours. I say"episodes"
because when there is one eruption, there may be a second and third.
As seen in 1986-87, the interval between the first and second play is
typically around 2-2 1/2 hours; the next interval, when it happens (and
it usually does not) is of 28-42 minutes. Interestingly, the majority
of eruption series have occurred near the time of something by Giant,
and is therefore believed to serve as something of an indicator worth
watching for.
 
Scott Bryan
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