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Kīlauea Volcano's east Lae‘apuki lava delta pictured hours before i...
August 26, 2005

Kīlauea's east Lae‘apuki lava delta pictured hours before it collap...

Kīlauea Volcano's east Lae‘apuki lava delta pictured hours before it collapsed into the sea over a 90-minute period. White plume marks location of lava entering sea fed by a lava tube within delta.

Lava spilling over sea cliff starts to build new lava delta, Kīlaue...
August 23, 2005

Lava spilling over sea cliff builds new lava delta, Kīlauea

pāhoehoe lava spilling over sea cliff on south coast of Kīlauea Volcano starts to build a new lava delta. Only three days old, the delta grows slowly as lava spreads over fragmented debris and flows that have accumulated on the steep submarine slope.

Tephra-jet explosion at leading edge of an active lava delta, Kīlau...
August 19, 2005

Tephra-jet explosion at leading edge of an active lava delta, Kīlauea

Explosive interaction between lava and seawater blasts a tephra jet consisting of steam, hot water, black tephra, and molten fragments into the air. Such explosions are typically directed toward the sea, but many explosions also send a shower of lava more than 10 to 20 m (33 to 66 ft) inland. Tehpra jets are the most common type of lava-seawater explosion, and typically

Active lava delta on the south coast of Kīlauea Volcano, Hawai‘i...
August 12, 2005

Active lava delta on the south coast of Kīlauea, Hawai‘i

Active lava delta at East Lae‘apuki on the south coast of Kīlauea Volcano. White gas plume (right) marks location of lava entering the sea through a lava tube whose location is shown by blueish fume (left and center). In early August 2005, the delta encompassed an area of about 12 hectares (30 acres). On August 27, about 4.5 hectares (11 acres) of the delta collapsed into

Radio telemetry tower on Mauna Kea
July 5, 2005

Radio telemetry tower on Mauna Kea

A VHF radio receiving tower is set up on the slopes of Mauna Kea volcano on Hawai‘i Island, Hawai‘i. This setup allowed researchers to track radio tagged palila over large areas to determine where they were spending their time. 

May 10, 2005

Lava Pond Spattering and Overflow at the MLK Vent

(May 10, 2005, 16:20:29 to 18:30:29) After the collapse of the main spatter cone at the MLK vent (see movies "Spatter cone collapse at the MLK vent"), a small lava pond was visible within the new pit. At times, the level of the lava pond rose abruptly, overflowing the rim of the pit. This movie is an example of this and shows the lava surface rising suddenly to overflowing

May 2, 2005

Spatter Cone Collapse at MLK Vent

(May 2, 2005, 05:30:04 to 07:30:02) During spring 2005, activity at the MLK vent, on the southwestern flank of the Pu‘u ‘Ō‘ō cone, changed from a period of construction to one of destruction. This was highlighted by the collapse of the main MLK spatter cone. The drain-back of lava beneath the spatter cone, following lava extrusion, apparently removed support of the

May 2, 2005

Spatter Cone Collapse at MLK Vent

(May 2, 2005, 02:30:28 to 07:30:37) The spatter cone collapse described in the movie below was also recorded by a time-lapse camera on the west flank of the Pu‘u ‘Ō‘ō cone. This camera was located about 70 meters from the MLK vent and recorded two pulses of lava effusion from the vent before collapse. The first, and larger, pulse of effusion was abruptly terminated by a

February 10, 2005

Lava Fountaining from the MLK Vent

(February 9, 2005, 18:00:30 to February 10, 2005, 08:00:31) On February 9, 2005, an increase in lava discharge from Pu‘u ‘Ō‘ō, part of a longer term increase in effusion rate (Miklius and others, 2006), resulted in vigorous spattering and low fountaining from the MLK vent. Before the event, the tallest of the small complex of spatter cones over the MLK vent was about 6–7

March 2, 2004

Pu`u 'Ō`ō Crater Lava Flow

(March 2, 2004, 11:48:17 to 23:08:42) Late 2003 through early 2004 marked a period of heightened eruptive activity at Pu‘u ‘Ō‘ō (Miklius and others, 2006) on Kīlauea Volcano's east rift zone, with lava frequently spilling from vents within the Pu‘u ‘Ō‘ō crater. This time-lapse movie, captured by a Webcam located on the northern rim of Pu‘u ‘Ō‘ō, shows lava erupting from a 

February 26, 2004

PubTalk 2/2004 — Life and Death of Hawaiian Coral Reefs

New Studies Track the Life Cycle of Maui's Changing Reefs

By Michael E. Field, Marine Geologist & Curt D. Storlazzi, Coastal Oceanographer

  • How are coral reefs changing, and why is it a concern?
  • Agents of change on Maui's reefs have both natural and human causes
  • Coral eggs and sperm released during
Nene goose stands among coastal vegetation
February 18, 2004

Nene goose stands among coastal vegetation

A nene goose, Hawai‘i's state bird and an endangered species, stands among coastal vegetation on O‘ahu island. USGS researchers have tracked nene movements using GPS transmitters to determine where they spend their time and to inform policy and decision making regarding their continued protection under the Endangered Species Act. 

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November 19, 1998

One of the most useful gadgets in the geologist's tool box is the ability to measure the age of a lava flow, an island, or even the earth itself.

November 12, 1998

Lava and the surf—two powerful forces seeking supremacy over each other. One consequence of this battle is "floating rocks" seen near the ocean entry, where lava from Kīlauea's ongoing eruption reaches the south shore of the Big Island.

November 5, 1998

The terrible tragedy in Nicaragua and Honduras from Hurricane Mitch's extraordinary rainfall was made worse by a volcano. The volcano didn't erupt, and it isn't even listed separately among the 1,511 volcanoes known to have been active in the past 10,000 years. 

October 29, 1998

Every day, tourists and locals visit Kolekole stream to see 70 cubic meters of water per second (18,000 gallons per minute or gpm) cascade 135 m (442 feet) over Akaka Falls to the plunge pool below. The sight can be both dramatic and serene.

October 25, 1998

Early Sunday morning shoppers at the Volcano farmers market can purchase delicious greenhouse tomatoes grown in Mountain View. In a cool mauka (inland) environment, the greenhouse provides the essential warmth that tomatoes require.

October 15, 1998

The major part of each Hawaiian volcano lies below sea level, which creates a logistical nightmare: How does one study the submarine slopes?

October 8, 1998

Scientists know more about the history and inner dynamics of Kīlauea than they do about most other volcanoes in the world. Yet a major portion of the volcano has received little attention.

October 1, 1998

A 1,262-m-deep (4,139-ft-deep) research hole was drilled in the southwest corner of Kīlauea's caldera in 1973. At the time, this was the deepest hole in the summit region of any active volcano on earth.

September 21, 1998

Kīlauea Volcano's summit has been slowly subsiding since 1983, the year that the ongoing Pu`u O`o-Kupaianaha eruption started. This broad and gentle cone-shaped downwarping of the summit is centered about 1,500 m (one mile) south of Halema`uma`u Crater, where the ground's surface is now 1.3 m (4.3 ft) lower than it was in 1983.

September 17, 1998

With this article, "Volcano Watch" broadens its scope to include items of biological interest related to Hawai`i volcanoes. Once every two months, the column will focus on topics that relate to the interplay of biological resources with volcanic activity. 

September 10, 1998

Rapid landscape changes take place during Kīlauea's east rift zone eruption. Visitors to the coastal plain six months ago could have watched lava spilling from tubes at two major ocean entries south of Royal Gardens. By July 11, the eastern entry, at Waha`ula, had ceased. 

September 3, 1998

The Chain of Craters marks the location of Kīlauea's upper east rift zone. The chain reaches southeastward from the summit caldera and then gradually bends into the overall east-northeast trend of the rift zone.