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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 24, 1995

Wednesday, November 29, marks the 20th anniversary of the 1975 Kalapana earthquake, the largest earthquake to strike Hawaii since 1868. Residents were awakened at 3:35 a.m. by a magnitude-5.7 earthquake located a few miles inland of Lae'apuki on Kīlauea's south coast. 

November 17, 1995

The U.S. Geological Survey's Hawaiian Volcano Observatory is closed due to the general shutdown of the U.S. government.

November 5, 1995

Seismology, the science of earthquakes and the mechanical properties of the Earth, is the primary method used to monitor the volcanoes of Hawaii and elsewhere.

October 27, 1995

On November 5, 1880, 115 years ago this week, an eruption began on Mauna Loa's northeast rift zone that would eventually send lava closer to Hilo Bay than any other in over a thousand years.

Kīlauea lava status; shoreline hazard...
October 20, 1995

The eruption on Kīlauea's East Rift Zone continued without any pauses this past week. The active flows are confined to the eastern side of the Kamoamoa flow field, and most of the lava is entering the ocean near Kamokuna.

October 13, 1995

During the past few weeks, we took a break from writing about Kīlauea's East Rift Zone eruption to explore the geological history of the main Hawaiian Islands and to bring you up-to-date on the eruption at Ruapehu Volcano in New Zealand.

September 29, 1995

In the last few weeks, we have reviewed the eruptive stages of Hawaiian volcanoes and have given brief overviews of the geologic history of Hawai'i Island and of Maui, Moloka'i, Lana'i, and Kaho'olawe, the islands that make up the Maui Complex.

September 23, 1995

Last week, we presented a brief history of the island of Hawaii, the largest island in the Hawaiian chain. However, before the island of Hawaii formed, Maui Nui was an even larger island. 

September 15, 1995

The Island of Hawai'i consists of five coalesced volcanoes, a submarine volcano that has already subsided below sea level, and another, Lō‘ihi Seamount, that has yet to grow to sea level.

September 8, 1995

The 15 volcanoes that comprise the eight principal Hawaiian Islands are the youngest in a linear chain of about 125 volcanoes that stretches for about 3,600 miles across the north Pacific.

September 1, 1995

The long-lived eruption on Kīlauea's East Rift Zone took a short break starting Tuesday, August 22. Before the pause in activity, we observed that the lava pond inside Pu'u 'O'o Crater was unusually deep (more than 310 feet below the rim).

August 25, 1995

A recent visitor to the Hawaiian Volcano Observatory was involved with the removal of abandoned vehicles from the area surrounding the Sand Hill cone in coastal Puna. He was puzzled by the location of an apparent volcanic vent so far away from the rift zone of Kīlauea.