[Geysers] Anemone concert observations 01-09-13

[David Schwarz]

   I didn't watch Anemone at all this summer, but based on a quick scan
through various YouTube and Flickr videos, 20-25 seconds doesn't seem like
an unreasonable duration for the part of Anemone's eruption that's easily
visible by webcam.  Bear in mind that when we're timing it up close, we
usually take the time from when the first water rushes into the vent, but
it can be easily 10-20 seconds from then until the first significant
bursts, which is what you'd see on the webcam.  You also probably lose
about 5 seconds of splashes that barely break the surface before the
eruption is clearly over as viewed from up-close.

   This is why geyser eruption times observed from afar are almost always
recorded as n.s.--even geysers like Daisy and Riverside where it seems like
it shouldn't make much difference.  There's often some kind of initial
activity that you can really only see up close.

David Schwarz


On Thu, Jan 10, 2013 at 11:41 PM, Micah Kipple <godsfireworks at yahoo.com>wrote:

> On 01-09-13 from 1649 to 1724 I was treated with the somewhat rare
> opportunity to Observe Anemone's behavior on the streaming webcam. At 1649
> I noted that Big Anemone erupted, (when it erupts at this time of year
> there is a conspicuous steam cloud), upon announcing my observation, the
> camera operator zoomed in on the area, since visibility was limited and the
> window for various geysers elsewhere were nowhere close. I saw that Little
> Anemone was ie at 1650, which led to my conclusion that the Anemone complex
> had just undergone a concert sequence.
>
> 9 minutes later, (A ten minute interval for Big) Big erupted again, this
> time Little was quiet, no concert. Based on my studies from labor day week,
> When Anemone is in a concert "series" it has concerts every 20 minutes give
> or take. so I guesstimated to that the next eruption would be a concert,
> and that it would occur around 1709. Again, drawing from my observations
> from last summer, I forecasted that Little would begin erupting around
> 1707. and it did. a minute later Big joined in for a Concert Sequence.
> After Big shut off, little continued for around a 3 minute duration, and
> then the system entered a "quiet period".
>
> The cam then panned away and down basin, so I continued (as best I could)
> to observe from the static cam. I caught another possible concert series at
> 1724, although I'm not sure because that would be two concerts back to back
> and I have not witnessed that before.
>
> A quick note of concern for me. For all three Big Anemone eruptions that I
> witnessed on the streaming cam, the duration seemed to be 20 seconds or
> less. this is very disconcerting to me because if that is the case, then
> the durations have halved in length since the summer. It will have to be
> something to keep an eye on as I watch for it more through the season.
>
> Micah Kipple
>
> Volcanoes are God's Fireworks
>
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