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| Science Forum Index » Geology Forum » Kilauea summit vent collapse... |
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| Belba Grubb... |
 Posted: Thu Jul 02, 2009 3:25 pm |
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http://volcanoes.usgs.gov/hvo/activity/kilaueastatus.php from July 1
on upwards.
So...what happens next? Eric Klemetti at the "Eruptions" blog
speculates that pressure sufficient for an explosion isn't likely to
build up (see http://preview.tinyurl.com/n9xn8f ). Today's HVO update
notes that there was a little bit of incandescence seen by the vent
Webcam last night, and that there is a small plume today. Also, some
gas-jetting noises were heard at the vent late yesterday afternoon.
Apparently no sulfur dioxide measurements have been taken since the
collapse, though.
Some gas is getting through, but how much, one wonders; and what is
behind the three-fold increase in RB2S2BL quakes: magma movements,
pressure build-up, or a combination of the two?
Interesting!
Barb
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"The real difficulty about vulcanism is not to see how it can start,
but how it can stop."
-- Sir Harold Jeffreys, 'Earthquakes and Mountains,' 2nd edition
(1950), 187.
quoted at http://www.todayinsci.com/QuotationsCategories/V_Cat/Volcano-Quotations.htm |
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| Belba Grubb... |
| Posted: Sun Jul 12, 2009 10:59 pm |
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Just in case anyone here is following this, the rock melted into the
lava, (neat HVO Quicktime movie of lava pond down there:
http://preview.tinyurl.com/ma26jm ), but the summit vent has been dark
since the July 4th deflation-inflation event, which is even more
interesting.
Barb
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"Scientific Achievements Less Prominent Than a Decade Ago" and other
interesting study results: http://pewresearch.org/pubs/1276/science-survey |
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| Belba Grubb... |
| Posted: Fri Jul 24, 2009 5:17 am |
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There's no particular reason for this post/monologue, but I just love
it when meteorology and geology coincide; assuming that HVO's
seismographs are filtered, those must have been two very powerful
lightning bolts:
HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
Thursday, July 23, 2009 7:49 AM HST (Thursday, July 23, 2009 17:49
UTC)
.....
*Past 24 hours at Kilauea summit:* No lava or glow has been visible
within the Halema`uma`u Overlook vent since the July 4 DI event. This
morning, the plume appears a bit thicker, possibly a result of the
heavy rain yesterday afternoon, and is moving toward the southwest.
....
Seismic tremor amplitudes continued to decrease after the switch to
inflation Monday night but remain stronger than the low, pre-DI
levels; the number of RB2S2BL earthquakes were elevated around 3 pm
yesterday, probably due to the intense thunderstorm at Kilauea summit.
Of the earthquakes that were strong enough to be located, eight were
beneath the summit area (two were probably lightning strikes) and
three were on south flank faults.....
Barb
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“Weather is a literary specialty, and no untrained hand can turn out a
good article on it”
-- Mark Twain
"I forgot to say that the noise made by the bubbling lava is not
great... It makes three distinct sounds - a rushing, a hissing, and a
coughing or puffing sound; and if you stand on the brink and close
your eyes it is no trick at all to imagine that you are sweeping down
a river on a large low pressure steamer, and that you hear the hissing
of the steam about her boilers, the puffing from her escape pipes and
the churning rush of the water abaft her wheels. The smell of sulfur
is strong, but not unpleasant to a sinner."
-- Mark Twain again, on "The Great Volcano of Kilauea" at
http://www.twainquotes.com/18661116u.html |
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| Posted: Sat Jul 25, 2009 9:05 pm |
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Not really. It's because of the close proximity of seismographs to
those lightning strikes.
"Belba Grubb" <trungsisterfan at (no spam) yahoo.com> wrote in message news:db730124-71df-4b48-b4c4-791e4fa17f8c at (no spam) s31g2000yqs.googlegroups.com...
There's no particular reason for this post/monologue, but I just love
it when meteorology and geology coincide; assuming that HVO's
seismographs are filtered, those must have been two very powerful
lightning bolts:
HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
Thursday, July 23, 2009 7:49 AM HST (Thursday, July 23, 2009 17:49
UTC)
.....
*Past 24 hours at Kilauea summit:* No lava or glow has been visible
within the Halema`uma`u Overlook vent since the July 4 DI event. This
morning, the plume appears a bit thicker, possibly a result of the
heavy rain yesterday afternoon, and is moving toward the southwest.
....
Seismic tremor amplitudes continued to decrease after the switch to
inflation Monday night but remain stronger than the low, pre-DI
levels; the number of RB2S2BL earthquakes were elevated around 3 pm
yesterday, probably due to the intense thunderstorm at Kilauea summit.
Of the earthquakes that were strong enough to be located, eight were
beneath the summit area (two were probably lightning strikes) and
three were on south flank faults.....
Barb
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“Weather is a literary specialty, and no untrained hand can turn out a
good article on it”
-- Mark Twain
"I forgot to say that the noise made by the bubbling lava is not
great... It makes three distinct sounds - a rushing, a hissing, and a
coughing or puffing sound; and if you stand on the brink and close
your eyes it is no trick at all to imagine that you are sweeping down
a river on a large low pressure steamer, and that you hear the hissing
of the steam about her boilers, the puffing from her escape pipes and
the churning rush of the water abaft her wheels. The smell of sulfur
is strong, but not unpleasant to a sinner."
-- Mark Twain again, on "The Great Volcano of Kilauea" at
http://www.twainquotes.com/18661116u.html |
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| Belba Grubb... |
| Posted: Sun Jul 26, 2009 8:29 pm |
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On Jul 25, 11:05 pm, <nos... at (no spam) nospam.invalid> wrote:
[quote:f9ce18155e]Not really. It's because of the close proximity of seismographs to
those lightning strikes.
[/quote:f9ce18155e]
Thank you -- that must be quite a drawback in volcano seismology in
areas prone to storms.
Barb
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Virtual Library of Useful URLs, Arranged by Dewey Decimal
Classification:
http://www.aresearchguide.com/540-599.html |
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