[Geysers] North Goggles data on GOSA web site

[David Schwarz]

*
*
   I've uploaded some video to YouTube of some of the strange behavior on
July 22, 1994 that I described in an earlier email:

http://www.youtube.com/watch?v=gMbqMjORJ9o

   The first part of the video shows Goggles Spring and North Goggle
sitting just below overflow boiling more and more after they recovered from
the first minor eruption.  After they drain, the video shows them bursting
and splashing from a deep water level.  Somehow I managed not to get video
of any of the 7 minors that followed, but...

   ...here's a video of five North Goggle minors that took place on August
18 and 19, 1993:

http://www.youtube.com/watch?v=Ou5lRcW3LY4

David Schwarz

On Tue, Feb 14, 2012 at 8:34 PM, David Schwarz <
david.schwarz at alumni.duke.edu> wrote:

>
>    Briefly, those are actually:
>
>    A series of 5, a series of 4, and a series of 2 on June 29-30, 2000.
>
>    A series of 1 and a series of 8 on July 22, 1994.
>
>    Longer explanation:
>
>    In the '90s, the rule of thumb was that North Goggle majors were
> exceedingly rare, but series of minors tended to start within two or three
> hours after a Lion series.  The related extended overflow (see next
> paragraph) often started around the time Lion would have been expected had
> the Lion series continued.
>
>    North Goggles eruptions were always preceded by an exceptionally long
> overflow of 20+ minutes.  Majors occurred during the overflow--an overflow
> that lasted over 60 minutes generally prompted some hope for a major.
>  Minors occurred after an extended overflow ended, on a subsequent
> refill--oddly, usually not the first after the extended overflow, although
> the first fill _would_ usually be accompanied by some splashing and
> boiling.  Once one minor had taken place, a followup (ie, part of a series)
> could occur on subsequent refills, with a gap of up to two non-eruptive
> refills on 10-20 minute intervals in between.
>
>    With that in mind, here's what happened with that July 22, 1994 series,
> which I wrote about yesterday but mistakenly placed in 1995:
>
>    The geyser had a extended overflow during the Lion series the morning
> of July 22, around the time of the third Lion in the series.  This was a
> bit early, but not an unheard of time for an extended overflow.  The
> overflow lasted long enough to give us hope for a minor, which indeed
> happened at 11:20.
>
>    Then things got weird.  Normally, a North Goggle minor meant that we
> were done with the Lion series, so we were pretty taken aback when Lion
> erupted again at 11:29.  We were even more taken aback when North Goggle
> refilled and immediately went into another extended overflow--sort
> of--starting sometime around 11:40.  I say "sort of" because the water
> level stayed high but well below overflow, pulsating the way it does when
> overflowing.
>
>    This non-overflow was quite long.  Unfortunately, my note-taking
> discipline as a teenager wasn't what it could have been, so I can't tell
> you how long, but it was long enough that North Goggle started boiling and
> doming the way it does when it's building up to a major.  Well over an
> hour.  Just when it was looking really promising, it unceremoniously
> drained out of sight.
>
>    Within a minute or two, both North Goggle and Goggles Spring starting
> loudly rumbling and thrashing at depth.  Both splashed visibly within their
> craters from a very deep water level, even putting some spray and droplets
> over their rims.  After an unusually long recovery, they refilled, boiled
> heavily, and failed to erupt, so we wandered off to Giantess, which was
> having impressive and frequent boils that day.
>
>    From Giantess, we saw the first North Goggle eruption of the new
> series.  It's slightly possible that we missed an eruption or two in some
> of the longer gaps in the data because we really weren't expecting any more
> after three or four and kept wandering off.  Once we decided to settle and
> keep a close eye on it, it had one more eruption and then visibly cooled
> off (stopped boiling during overflows).  Lion started a new series shortly
> thereafter.
>
>    At the time this was by far the longest series of the 1993+ active
> phase, and the only time that a series lasted essentially until the next
> Lion series.
>
>    I wasn't there in 2000, but that data looks very clearly like three
> 1990's-style series.  The Lions at 1824, 0233, and 0856 are initials, as
> almost certainly are the corresponding North Goggles at 2355, 0605, and
> 1235.  At 5 eruptions, the first series is still remarkably long.  It's
> also remarkable, at least by the standards of the 1990s, how close the last
> eruptions of the first and second series came to the subsequent Lion
> initial.
>
> David Schwarz
>
> On Tue, Feb 14, 2012 at 5:08 PM, Graham Meech <meechg at verizon.net> wrote:
>
>> Dave asked if there had been similar North Goggles activity in the past
>> so I
>> looked at the data on the GOSA site that Lynn Stephens, Mary Beth Schwarz
>> and Marion Powell have compiled covering 2010-1992, 1981, 1979-1975, and
>> 1973-1970 (http://gosa.org/ofvclogs.aspx).  Thank you to everyone that
>> reported the times, to Lynn, Mary Beth, and Marion for compiling the data,
>> and to GOSA for hosting it on the web site.
>>
>> The two best series were 11 eruptions on 29-30 June 2000 and 9 eruptions
>> on
>> 22 July 1994.  Other years had up to 5 eruptions reported on a single day
>> with mostly single eruptions reported.  All but one eruption logged in
>> these
>> two days were between Lion series (if we assume the Lion reports are
>> complete).  All the Lion and North Goggles eruptions for these days are
>> shown below.
>>
>> 6/29/2000       Lion    10:58   ie
>> 6/29/2000       Lion    12:14
>> 6/29/2000       Lion    18:24   ns
>> 6/29/2000       Lion    19:47   ns
>> 6/29/2000       Lion    21:00           d~3 1/2m
>> 6/29/2000       North Goggles   23:55
>> 6/30/2000       North Goggles   0:25                    minor
>> 6/30/2000       North Goggles   1:12            0:47    minor
>> 6/30/2000       North Goggles   1:52            0:40    minor
>> 6/30/2000       North Goggles   2:23            0:31    minor
>> 6/30/2000       Lion    2:33
>> 6/30/2000       Lion    3:55
>> 6/30/2000       North Goggles   6:05                    minor
>> 6/30/2000       North Goggles   6:50            0:45    minor
>> 6/30/2000       North Goggles   7:28            0:38    minor
>> 6/30/2000       North Goggles   8:13            0:45    minor
>> 6/30/2000       Lion    8:56                    initial
>> 6/30/2000       Lion    10:10
>> 6/30/2000       North Goggles   12:35                   minor
>> 6/30/2000       North Goggles   13:19           0:44    minor
>> 6/30/2000       Lion    18:24                   initial
>> 6/30/2000       Lion    19:45           1:21
>>
>> 7/22/1994       Lion    3:53    ie
>> 7/22/1994       Lion    9:04
>> 7/22/1994       Lion    10:05                   minor
>> 7/22/1994       Lion    10:26
>> 7/22/1994       North Goggles   11:20
>> 7/22/1994       Lion    11:29
>> 7/22/1994       Lion    12:42                   d < 15s
>> 7/22/1994       North Goggles   13:21
>> 7/22/1994       North Goggles   14:28
>> 7/22/1994       North Goggles   15:00
>> 7/22/1994       North Goggles   15:45
>> 7/22/1994       North Goggles   16:21
>> 7/22/1994       North Goggles   17:11
>> 7/22/1994       North Goggles   18:11
>> 7/22/1994       North Goggles   ~18:37
>> 7/22/1994       Lion    19:56                   initial d > 6
>> 7/22/1994       Lion    21:12
>>
>> On 6/30/2000 there are some long intervals which could be gaps in
>> observation (especially after 0223) so there may have been extra eruptions
>> not logged.  Both of these events were in the summer when people would
>> have
>> been around though, so the record might be complete.
>>
>> No Giantess eruptions on either day.  Interestingly, on both days there
>> was
>> a series of false indicators.  In 1994 there was also a Ledge eruption
>> that
>> day and an Aurum afterburst reported!
>>
>> Graham Meech
>>
>>
>>
>>
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>> 
>>
>
>
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