Pu'U O'o:
Kilauea-vulkaan op Hawaii nog steeds actief
Lavastroom van 11 augustus 2002.
Foto: USGS/Hawaiian Volcano Observatory
USGS Hawaiian Volcano Observatory
August 21
Eruption Update
An ocean entry at Highcastle Stairs began in the early afternoon yesterday. The lava climbed down the stairs to the visitor overlook, moved several meters across a flat, banked against and finally overwhelmed the overlook's stone wall, and dropped into the water. By 0500 this morning, the entry had built a bench that reached 25-30 m along shore and extended about 10 m from the sea cliff. Activity was weak to moderate, decreasing as the nearly Full Sturgeon Moon set and the sun rose. The Highcastle Stairs entry is about 100 m northeast of the eastern group of entries that were active at Highcastle a week ago.
As lava oozed seaward, it covered up more and more of the last bit of the Chain of Craters Road. At 0500 this morning, only three tiny remnants remained, and one was gone by 0600.
Several other tongues of the western part of the Highcastle lobe continue to threaten ocean entry. This morning, three are within 20 m of the top of the sea cliff, and one of those is actively advancing. Lots of hot, flowing or inflating lava makes travel across the Highcastle lobe to Highcastle Stairs one hot trip.
Paliuli sports three groups of surface cascades this morning. One is near the west end of the drapery, an area of repeated cascades during the past two weeks. A cluster of 3-4 cascades occurs just east of the central part of the drapery, and another cluster of similar size is near or at the eastern end of drapery. The distance between the western and eastern cascades is about 1 km--a fact that illustrates how spread out the Mother's Day flow is. If all of the lava were in one tube going into the ocean, there would be a fine entry to gush about.
Incandescence above Paliuli has dropped off. Many incandescent spots remain, but the area to the top of Pulama pali is darker now than it has been in some time. This probably reflects the improved development of a tube system, not a slackening of lava flux. Glow from above Pulama pali testifies to continued breakouts.
Both the Boundary flow and the crater of Pu`u` O`o are dark this morning.
Seismicity is at a normal level this morning. The swarm of long-period earthquakes and tremor playing since early June returned to full strength three mornings ago and remains there this morning. Both Uwekahuna and Pu`u` O`o went into a slow inflation swing late yesterday but are coming down now. All other tiltmeters are flat or continuing long-term trends.
USGS Hawaiian Volcano Observatory
August 15, 2002
Eruption Update
Cascades of lava are falling down Paliuli this morning near the edge of the recent flow activity. The cascades feed a lava flow, mostly `a`a, that is slowly creeping across the coastal flat below Paliuli. In addition, another small cascade on Paliuli adorns the eastern side of the flow field. Above Paliuli, strings of incandescence continue the trace of the Mother's Day flow all the way to the top of Pulama pali--and beyond, if the glow above the pali is any indication.
At the ocean, both the Wilipe`a and West Highcastle entries are taking a breather this morning. Highcastle, too, is down significantly from its level of activity yesterday. Nonetheless, a single strand of lava tumbles onto the new bench, which has grown about 10 m eastward since yesterday morning. One small entry point from the front of the bench into the water is visible. Many breakouts just upslope from the Highcastle area show continued supply of lava to the Highcastle lobe.
Pu`u O`o is putting out nice glow this morning, generated by surging lava within several spatter cones and vents on the crater floor. An overflight yesterday saw this lava inside the broken-topped cones.
The Boundary flow remains dark.
Seismicity is at a normal level this morning. Even the swarm of long-period earthquakes and tremor that has been active since early in June is in a lull. All tiltmeters are flat or continuing long-term trends. The cute little inflation-deflation at Uwekahuna yesterday had no noticeable impact on anything else at the volcano except possibly at Pu`u` O`o, which started a more rapid deflation at about the time Uwekahuna was showing off.
1 augustus 2002
Vrijdag 2 augustus 2002
U.S. Department of the Interior
U.S. Geological Survey
July 30, 2002
Detailed descriptions of lava flow and videos and photographs of lava
breakouts, lava streams, and lava entering the ocean offer the public as
well as scientists an opportunity to safely observe Kilauea's activity from
their computers. Web site viewers can access the site daily and find out
new information and see current photographs of Kilauea's lava flows.
Kilauea Volcano has been erupting since Jan. 3, 1983. The current lava
flows are arms of the larger lava flow that erupted earlier this year on
Mother's Day (May 12).
Since 1952, there have been 34 eruptions, and since 1983, eruptive activity
has been nearly continuous.
The eruption that began in 1983 continues at the cinder-and-spatter cone of
Pu`u `O`o (high point on skyline).
Kilauea is the youngest and southeastern-most volcano on the Big Island of
Hawaii.
The Hawaiian name "Kilauea" means "spewing" or "much spreading," apparently
in reference to the lava flows it erupts.
The USGS serves the nation by providing reliable scientific information to:
describe and understand the Earth; minimize loss of life and property from
natural disasters; manage water, biological, energy, and mineral resources;
and enhance and protect our quality of life.
New Lava From Kilauea Volcano Entering the Sea
USGS Web Site Features Daily Lava Flow Updates and Photographs
Lava flows from the Pu`u `O`o vent on the east rift zone of Kilauea Volcano
in Hawaii are entering the sea and are rapidly adding new land to the
coast, according to the U.S. Geological Survey's Hawaiian Volcano
Observatory. The USGS Web site http://hvo.wr.usgs.gov/kilauea/update/
features near real time lava flow updates as well as photographs.
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