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24 December 2003
Christmas Eve from Pu`u `O`o to Cookie Monster
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Left. Ground view of spattering
west cone in filled West Gap Pit, with shoulder of Pu`u `O`o in
background. Cone is about 7 m high. 0816. Right. Aerial view
of spattering west cone. Pu`u `O`o's crater is directly behind
spatter cone. 0829. |
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Left. Aerial view of both
spatter cones in filled West Gap Pit, with Pu`u `O`o's crater
behind. Incandescent cone at Beehive Vent just visible beyond left
edge of larger east cone in West Gap Pit. 0830. Right. One
more aerial view of west cone. 0831. |
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Left. Northeast margin of slabby
pahoehoe flow fed by spattering cone in filled West Gap Pit. Width
of view, about 5 m. 0840. Right. Looking west-southwest
across crater of Pu`u `O`o, showing incandescent East Pond Vent with
large fume column, Beehive Vent just right of fume and feeding flow
toward right, and West Gap Pit in distance with fume from west cone.
Beehive Vent started erupting about 10 minutes before this image was
taken. 1001. |
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Left. Ground view of spattering
from Beehive Vent feeds lava flow shown in right image above. Note
fresh, shiny flow on other side of Beehive. Height of cone at
Beehive Vent, about 8 m. 1005. Right. Fifty-five minutes
later, Beehive Vent continues to spill lava onto crater floor. 1100. |
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Left. Ground view from north rim
of Pu`u `O`o looking west into West Gap Pit, showing resumed
spattering from west cone after break of 2 hours. 1052. Right.
Looking east from similar location as left image, showing overturned
surface of lava flow erupted on December 23 from fuming East Pond
Vent in distance. 1006. |
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Left. Bizarre small hornitos
(affectionately termed carlitos by HVO staff) at gas-sampling site
at Cookie Monster, along uppermost Mother's Day lava tube.
Incandescence indicates hot hot it is. Short time laver, pasty lava
oozed from this area during gas sampling. Width of view, about 1.5
m. 0846. Right. Carlito blowin' smoke at Cookie Monster. The
smoke is really noxious fume. Height of carlito, about 40 cm. 0844. |
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Left. Sampling gas at Cookie
Monster. Mullite tube is inserted with care into gas vent, and gas
rushes through tube into collecting vacuum bottle, cooled
periodically to allow more gas to fit in bottle. 0917. Right.
Pele's Hair coated with sulfur and other sublimates at site of
Cookie Monster. Width of view, about 30 cm. 0855. |
27 December 2003
View of Pu`u `O`o from Pu`u Huluhulu
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Left. View of Pu`u `O`o from
top of Pu`u Huluhulu, 10 km to west. From left to right, incandescent spots
(best viewed in large view) are: top
of east cone in filled West Gap Pit, spattering west cone in filled
West Gap Pit, Humble Vent within crater of Pu`u `O`o, Episode 55 cone,
and cone in Puka Nui. In addition, dark Beehive cone (in Pu`u `O`o
crater) visible just left of east cone in West Gap Pit. Lava flows can be seen moving away from west cone
and Puka Nui. 0608. Right. Similar to left but with dawning
sky and lesser magnification. Lava flow from west cone in West Gap
Pit has nearly stopped moving. 0622. |
31 December 2003
A murky New Year's Eve on the upper flow field
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Left. Narrow channeled lava flow
wends it way westward from rootless shield complex near big bend in
upper Mother's Day lava tube. Burned but standing forest is slowly
being destroyed by lava. Lava channel is 3-6 m wide. 0842. Right.
Steam rises from lava flows emplaced several days ago and still hot.
Steam is most obvious on rainy days, when humidity is high. 0843. |
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Left. Sampling lava from small
toe in flow near western edge of rootless shield complex.
Sophisticated sampling device is modified garden hoe. 0921. Right.
Close-up of stretching bubbles in lava toe at sampling site. Width
of toe, about 25 cm. 0923. |
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Aerial views of new spattering hornito
in rootless shield complex. Left view shows actual orifice
(orange-yellow color) from which lava is emitted. Right view shows
bursting bubble above same hornito. Hornito is perhaps 1 m high, and
spatter is thrown 2 m above vent. 0909. |
Map of flows from Pu`u `O`o: 15 December 2003
Map shows lava flows erupted during 1983-present activity of Pu`u `O`o
and Kupaianaha (see
large map). Shades of red denote Mother's Day flow, which began erupting on
May 12, 2002 and continues to the present. Darkest shade indicates lava
flows erupted in November and December 2003. Yellow stars indicate
centers of recently active, or still active, rootless shields. New
shields often form, so it is hard to show all shields on this map.
Amalgamated Bend shield is near site of former August 9 rootless shield
shown on map.
Through September and into early October 2003, lava was moving along
the east and west sides of the Mother's Day flow. The east-side lava
(known as the August 9 breakout) came from the August 9 rootless shield,
itself fed by the main Mother's Day tube from Pu`u `O`o. The west side
lava, known as the Kohola arm of the Mother's Day flow, branched off the
tube system below the rootless shield.
In early October 2003, the August 9 breakout stopped moving, the Kohola died
back to a trickle, and the one labeled rootless shield gained prominence. By October
16, however, the shield had partly collapsed, leaving several drained
perched ponds behind. Upstream from the shield, many hornitos and small
flows formed over the Mother's Day tube. Soon thereafter, other rootless
shields began to form over the Mother's Day, August 9, and Kohola tubes.
These shields have been active throughout November and December.
Vents in West Gap Pit became active in early October, were quiet for
3 weeks, and then resumed intermittent activity that continued well into
December. Other vents were also sporadically active in Puka Nui (near West Gap Pit)
and in the crater of Pu`u `O`o.
Eruption-viewing opportunities change constantly, refer to the HVO home page for
current information. Those readers planning a visit to Kilauea or Mauna Loa volcanoes can get much useful
information from Hawai`i Volcanoes National Park.
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