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Kilauea

5 July 2000

Pahoehoe flow, Kilauea Volcano, Hawai`i
Many surface flows were visible today on the eastern side of the active flow field. This pahoehoe flow advanced across the flow field as it filled in low areas and spilled over the edges of previous pahoehoe toes.
Broad pahoehoe lobe, Kilauea Volcano, Hawai`i
Broad pahoehoe lobe that gushed from crack in inflating lava flow near site of photo above. Molten lava in this lobe was exposed for several minutes before crusting over. Once crusted, small toes, such as those in photo above, began to ooze from it.

6 July 2000

Aerial view of flow field on pali, Kilauea Volcano, Hawai`i
Steam plumes rise from where lava enters the sea, Kilauea Volcano, Hawai`i
A substantial new pahoehoe flow on the east side of the Smoke flow began from a breakout point at about 200 m elevation on Pulama pali. The breakout probably began on July 4. The flow is about 500 m long and 150-200 m wide. Lava continues to spill into the sea at three sites, and the corresponding lava benches are still quite narrow. The most vigorous entry remains at Waha`ula, which generated two steam plumes today. The plume in the upper left is from Kamokuna. The third entry generates a wispy plume in the lower right.

18 July 2000

Skylight at 2020 ft. elevation, Kilauea Volcano, Hawai`i
View toward upper end of skylight
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Views at right are toward the upper and lower end of the collapsed area shown above, as indicated by the arrows.

Skylight at 2020 ft. elevation, Kilauea Volcano, Hawai`i
Upper end of collapse
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Skylight at 2020 ft. elevation, Kilauea Volcano, Hawai`i
Lower end of collapse
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For the past week, the only skylight on the flow field is the one located above the pali at the 2020-foot elevation. The skylight formed when the roof of the tube partially collapsed into the tube, providing views of flowing lava at the upper and lower ends of the skylight. We collect lava samples from the lower end of the skylight (above right) by slinging a steel cable attached to a hammer head into the lava stream and jerking it out to obtain a glob of melt. The hot melt is then quenched by immediately sinking it into a bucket of water.

Aerial view of flow front at Royal Gardens subdivision, Kilauea Volcano, Hawai`i
In the past week, new flows have expanded nearly 150 m north into area west of lower Royal Gardens and east of the Hawai`i Volcanoes National Park boundary. This area is located at the base of the pali on the east edge of the flow field. As the flows move through vegetation, small fire flare-ups draw the attention of passing helicopters. This view is toward the south from above the base of the pali (distance from left to right is about 1 km).

25 July 2000

Aerial view of lava pouring over sea cliff east of Waha`ula, Kilauea Volcano, Hawai`i
Nearly vertical aerial view of lava dribbling over the sea cliff east of Waha`ula. Note the lava drapery left of the dribble, formed by earlier flows spilling over the cliff. Part of the sea cliff right of the dribble appears ready to tumble into the surf (click on "large" to see the detached part of the cliff). Visitors should stand mauka (landward) of any ground cracks near the cliff to avoid the danger of a sudden collapse.

29 July 2000

Pu`u Koa`e and 1974 flow, Kilauea Volcano, Hawai`i
Pu`u Koa`e, a large spatter cone on Kilauea's southwest rift zone, looms over the dark 1974 lava flow in middleground. Green pasture in background grows in Ka`oiki fault system on Mauna Loa. Runners in the Kilauea marathon, one of the world's toughest, approach the 11-mile post. John Smith, geophysicist at University of Hawai`i and colleague of HVO, won the marathon for the second time in three years, in 3 hours and change.
Fault scarp in Koa`e fault system, Kilauea Volcano, Hawai`i
Northwesternmost fault scarp in Koa`e fault system east of Pu`u Koa`e. The Koa`e fault system, a set of grabens and half-grabens whose north-facing scarps are generally most prominent, separates the mobile south flank of the Kilauea from the relatively stable rest of the volcano. Runners in Kilauea marathon struggle up steep trail, covered with loose sand from past Kilauea explosions, just past the 11-mile post.

31 July 2000

Waha`ula still most active entry with spectacular "fire hose" display

Aerial view of lava pouring over sea cliff east of Waha`ula, Kilauea Volcano, Hawai`i
This view is southeast across the coastal plain of Kilauea Volcano, showing the active ocean entries (marked by steam plumes). The most vigorous entry in lower left is located at Waha`ula. For the past couple of days, lava has been streaming into the sea from atop the narrow bench below the sea cliffs in the form of a spectacular "fire hose" (see images below).

Lava pours into sea from lava bench, Kilauea Volcano, Hawai`i
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Lava pours into sea from lava bench, Kilauea Volcano, Hawai`i
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Lava pours from a tube directly into the sea like water shooting from the end of a giant fire hose. The lava gushes about 10 m away from the cliff, which is 12-15 m tall. The lava "fire hose" is very difficult to see from the shoreline, because it begins from the edge of a narrow lava bench; these photos were taken from a helicopter.

Collapse features on west and south flanks of Pu`u `O`o

Map of Pu`u `O`o showing vents, collapse features, and recent flows, Kilauea Volcano, Hawai`i Map of description of Pu`u `O`o cone, flank vents, flows, and collapse features

West flank of Pu`u `O`o, view is toward southeast, Kilauea Volcano, Hawai`i
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Close view of collapse pit in West gap of Pu`u `O`o, Kilauea Volcano, Hawai`i
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A spatter cone in the West Gap has tumbled into the adjacent collapse crater, which is about 15 wide and 25 m long (see image of spatter cone in the March 2000 update). The crater is 20-30 m deep. Red-colored tephra produced by the collapse blankets an area 50 m wide and as far as 80 m south of the West Gap. Sloshing sounds from lava degassing below the crater can often be heard from the crater rim.

South flank of Pu`u `O`o, view is toward northeast, Kilauea Volcano, Hawai`i
This view is northwest across the south flank of Pu`u `O`o. Thick fume escapes from the string of collapse craters leading from Puka Nui to the minivent (see image of minivent spattering in the photo gallery), likely marking the trace of the lava tube leading southeastward from Pu`u `O`o. This area has not changed significantly in the past few weeks, except that the amount heat in the area seems to have increased.

 

Map of lava flows from Pu`u `O`o to the ocean
1 July 2000

Map of lava flows on south coastal part of Kilauea Volcano

Large map. Map shows lava flows (red) on Pulama pali and coastal plain active since October 1999, as well as flows erupted earlier from Pu`u `O`o and Kupaianaha. Compare this map with that for the previous updates to see how the flow has widened eastward between Royal Gardens and Waha`ula. Lava reached the ocean at the Lae`apuki bench on December 17-18, 1999; this was known as the West flow. The West flow has been inactive since early April. The eastern part of the active flow field reached the Royal Gardens private access road on January 11 and entered the sea near Waha`ula on February 3-14, 2000. The flow descending Pulama pali to feed this area is the Smoke flow; it is currently the only active flow.


Eruption-viewing opportunities change constantly, so those readers planning a visit to the volcano should contact Hawai`i Volcanoes National Park for the most current eruption information (tel. 808-985-6000).


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The URL of this page is http://hvo.wr.usgs.gov/multimedia/archive/2000/July/
Contact: hvowebmaster@usgs.gov
Updated: 15 August 2000 (SRB and DAS)