Unified Interior Regions

Hawaii

States L2 Landing Page Tabs

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October 3, 2003

Nearly continuous spattering from west vent of West Gap Pit

Nearly continuous spattering from west vent of West Gap Pit, and sporadic spatter bursting from tall hornito to left. Heaving pond of lava between camera and vent. Hand-held camera, so a bit shaky. Note especially the symmetrical burst from hornito at about 15 seconds. Noise is reasonable facsimile of the real thing, emphasizing the treble.

October 3, 2003

Spattering from east vent in West Gap Pit

Spattering from east vent in West Gap Pit, taken from same place as other video and also hand-held. Note the spatter rampart under construction by the falling spatter. Helicopter noise for first several seconds.

July 5, 2003

Lava pours out from under crust

Lava pours out from under crust at front of advancing breakout. See still taken at 0607:33 today.

July 5, 2003

Lava emerges from under crust

Lava emerges from under crust along side of breakout on steep slope. Listen to creaking sounds, about halfway through video, as crust flexes and breaks. See still taken at 0610:15 today.

July 5, 2003

Lava appears from under crust and drops into depression

Lava appears from under crust and drops into depression at front of advancing breakout. Width of blob of lava that appears is about 30 cm.

July 5, 2003

Lava flow

This clip lasts 30 seconds and so is a large file, but it shows such notable dynamics at flow front that it might be worth it to some of you patient ones. The active stream is 50-75 cm wide. Note, early on, how sliding crust plows into lava.

June 26, 2003

Lava issues from breached tube

Lava issues from breached tube and quickly disappears over old sea cliff. Note that center of stream stands above margins. See still taken at 0545 today.

June 26, 2003

Lava cascade

Same cascade as in first clip, but viewed more from side to see lava falling down cliff and spreading across surface of lava delta. Similar view to still image taken at 0548 today.

June 26, 2003

Surging cascade on steep cliff face

Surging cascade on steep cliff face. Note that surges override part of cascade next to cliff, which is slowed by friction with the cliff.

June 21, 2003

Lava in channeled breakout

Lava in channeled breakout from nearby tumulus flowing rapidly down steep slope before spreading out on flat ground. Same channel as shown in last two stills for today. Width of channel, about 2 m.

June 7, 2003

Gushing start of lava cascade

Gushing start of cascade shown in image taken at 0553. Lava comes from crusted flow to right. Width of flowing lava, about 1 m.

June 7, 2003

Lava flow

Downstream from first clip about 2 m. Same as shown in image taken at 0554.

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USGS
August 27, 1998

You hear a low rumbling sound; the walls of your house shake a little; objects on the shelves skip around, maybe even fall off the shelf. Was that an earthquake?
 

USGS
August 20, 1998

Groups of students of all ages frequently visit the U.S. Geological Survey's Hawaiian Volcano Observatory while they are on an excursion to Hawaii Volcanoes National Park. When prior arrangements are made, we escort them around our facilities and give a short talk on our mission and program.
 

USGS
August 13, 1998

Geology is an inexact science, and sometimes studying volcanoes seems like a game of chance. This is particularly true for those who study the way lava flows.
 

USGS
August 6, 1998

In 1790 a group of Hawaiian warriors in the Ka`u Desert was killed by an eruption of hot gas and flying rocks that originated from Kīlauea caldera. Scientists have studied the layers of tephra visible in gullies along the southwest rift zone in Hawai`i Volcanoes National Park and have concluded that this event was the only major explosion of the last 2000 years.
 

USGS
July 30, 1998

The mission of the U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) is to monitor the volcanoes of Hawai`i, to study the geological processes associated with eruptive and seismic activities, and to inform the public of the potential geologic hazards associated with volcanoes.

USGS
July 23, 1998

Although the study of volcanoes is, in itself, fascinating and is more than a full-time job, volcanologists also work closely with researchers in other sciences. One of the things we contribute to the work of other scientists is the ages of the lava flows around the island.
 

USGS
July 16, 1998

In a recent national television program on tsunami, attention was focused on the Great Crack in the southwest rift zone of Kīlauea. The size of the crack was presented as evidence that the south flank was breaking away from the island. 

USGS
July 10, 1998

Eruption Continues and New Land Frequently Collapses

USGS
July 9, 1998

When lava enters the sea, it begins a struggle to build new land. We name these entries for nearby geographic features—Lae`apuki, Kamoamoa, Kamokuna, Waha`ula, to list a few. For a brief time they become places memorable to anyone who visits and watches the spectacle of incandescent lava, immense steam plumes, and spattering explosions. That's how entries begin, but how do they end?
 

USGS
July 2, 1998

It has been more than 18 years since Mount St. Helens had its powerful eruption, almost 12 years since its latest quiet dome-building eruption, and 8 years since its latest small explosions. But this length of time is just a wink of the eye to a volcano. 

USGS
June 25, 1998

Discussions of volcanic air pollution from Kīlauea frequently start out with a conversation about the large amount of sulfur dioxide gas (SO2) that bubbles out of the volcano and is converted in air to the tiny acidic sulfate particles that form vog (volcanic smog).