Unified Interior Regions

Hawaii

The Pacific Region has nine USGS Science Centers in California, Nevada, and Hawaii. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

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Image: Kilauea Flow Field
March 12, 2010

Kilauea Flow Field

No surface flows were active anywhere on the flow field today, due to summit deflation and a reduction in lava supply over the past few days. Summit inflation resumed yesterday, and an increase in lava supply should lead to resumed breakouts over the next several days. This photo shows the area of flows that were active over the past week—they can be identified as the

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March 11, 2010

Active lava pond deep with the Halema`uma`u vent cavity

movie shows the active lava pond deep within the Halema`uma`u vent cavity. The lava is upwelling at the northern margin of the pond (the upper margin in this view), and slowly migrating south towards the bottom of the image, where it sinks out of view. The pond is about 50 m wide. Small spattering sources appear and disappear occasionally. This video was taken with a

Image: Kilauea's east rift zone eruption site
January 19, 2010

Kilauea's east rift zone eruption site

Kīlauea's east rift zone eruption site. Pu`u `Ō `ō is to the right, and the TEB vent and upper tube system is to the left and behind Pu`u `Ō `ō.

January 13, 2010

Entire floor of the Halema`uma`u vent

movie shows video collected with a thermal camera during two helicopter overflights of the Halema`uma`u vent. The high vantage point allowed a view of the entire floor of the vent cavity, which is not possible from the ground. Also, the thermal camera can "see" through the thick fume that normally obscures the vent to the naked eye. The first half of the video shows

December 28, 2009

Draining event in the lava pond within the Halema`uma`u vent

movie shows a draining event in the lava pond within the Halema`uma`u vent cavity. The lava column exhibited cycles of filling and draining of the vent cavity, with each cycle lasting a few minutes. As the pond drains, lava cascades into a small hole on the east side (right) of the cavity floor. Also, lava that was covering a large bench to the west of the main pond drains

December 21, 2009

Filling and draining cycle event in the Halema`uma`u vent

Lava within the vent cavity in Halema`uma`u crater continues to be active, and occasionally displays remarkable filling and draining cycles. This Quicktime movie shows the draining portion of one of these cycles, captured in "nightshot" mode in order to see through the thick fume. The video begins with a wide surface of chaotic, agitated lava, with vigorous upwelling and

Image: Aerial of Active Kilauea Area
December 17, 2009

Aerial of Active Kilauea Area

An aerial view looking north at two active areas of Kīlauea. Pu`u `Ō `ō crater is in the foreground, Mauna Loa (left) and Mauna Kea (right) are in the background. The fume source near the base of Mauna Loa (at Kīlauea's summit) is from the Halema`uma`u Overlook vent. The wind is blowing the plume trace toward the northeast, partially obscuring the view of Mauna Kea.

Image: Explosive Kilauea Boulder
December 8, 2009

Explosive Kilauea Boulder

This large rock at the Kīlauea Overlook in Hawai‘i Volcanoes National Park was ejected ballistically in 1790, or soon thereafter, from Kilauea Volcano's summit caldera when it was more than 600 meters (2000 feet) deep.

November 21, 2009

Small explosive event in the Halema`uma`u vent

movie (at x2 speed) shows a small explosive event in the Halema`uma`u vent at 9:20am. The explosion was immediately preceded by a portion of the vent rim collapsing into the vent cavity. The brown plume rises rapidly from the vent, and in the full resolution video large particles can be seen ejected in front of the plume. In the video shown here, it is possible to see some

November 19, 2009

Lava within the Halema`uma`u vent cavity

movie shows lava within the Halema`uma`u vent cavity, at a depth of about 200 m below the vent rim. The lava surface, which is about 20 m wide, is extremely vigorous, with constant roiling and semi-continuous spattering. Spatter deposited on the walls around the lava surface creates a hot, unstable surface, which can be seen to disintegrate as large blocks break off and

Aerial view of Pu‘u ‘Ō‘ō and surrounding features
November 1, 2009

Aerial view of Pu‘u ‘Ō‘ō and surrounding features

Aerial view of Pu‘u ‘Ō‘ō and surrounding features.

Attribution: Kīlauea
October 3, 2009

Disappearance of the lava pond within Halema`uma`u

movie shows the disappearance of the lava pond deep within the Halema`uma`u vent cavity during the early morning hours of October 3. The lava surface undergoes two filling and draining cycles, and then retreats to deeper levels in the conduit, completely out of view, around 2 am.

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USGS science for a changing world logo
August 27, 2003

A moderate earthquake rattled the Big Island of Hawai?i late Tuesday. The U.S. Geological Survey (USGS) reports that the earthquake, with a preliminary magnitude of 5.0, was centered about 30 miles south-southwest of Hilo, Hawai?i, in the Hawai?i Volcanoes National Park, near the base of Kilauea. It struck about 8:24 p.m. local time. Several small aftershocks have been reported.

USGS
August 27, 2003

A moderate earthquake rattled the Big Island of Hawai?i late Tuesday. The U.S. Geological Survey (USGS) reports that the earthquake, with a preliminary magnitude of 5.0, was centered about 30 miles south-southwest of Hilo, Hawai?i, in the Hawai?i Volcanoes National Park, near the base of Kilauea. It struck about 8:24 p.m. local time. Several small aftershocks have been reported.

photo of lave
August 24, 2003

Sunrise and breakouts on a fine Sunday morning

photo of lave
August 22, 2003

Scenes along still-active August 9 breakout

Person lowering borehole tiltmeter into the casing of a ten foot deep hole.
August 21, 2003

Last week, Maurice Sako and Kevan Kamibayashi, physical science technicians from the Hawaiian Volcano Observatory, spent three cold nights high on Mauna Loa's southwest rift zone.

photo of lave
August 17, 2003

Small hornitos above upper Mother's Day tube

USGS
August 14, 2003

On hot summer days in Hilo, many people visit the refreshing waters of the Wailuku River. In addition to offering scenic views, lush vegetation, and beautiful waterfalls, the Wailuku River has the distinction of being Hawai'i's largest river, on average discharging 1 million cubic meters (275 million gallons) of water each day - enough to fill about 300 Olympic-sized swimming pools.