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.

States L2 Landing Page Tabs

Filter Total Items: 1,906
January 17, 2011

Explosive Eruption (Jan 17, 2011)

Movie of the January 17 collapse and explosive eruption captured by a Webcam located on the rim of Halema‘uma‘u directly above the erupting vent.

Two color photographs, one showing a clear-day rock-wall face and one showing the rock-wall face obscured by volcanic gases.
December 31, 2010

Side-by-side comparison of the northwest wall of Kīlauea Caldera

Side-by-side comparison of the northwest wall of Kīlauea Caldera on a clear day (left) and a day with thick vog (right). HVO observation tower and building can be seen near the center in each photo

Image: Monitoring Gas Emissions from Kilauea Volcano
November 10, 2010

Monitoring Gas Emissions from Kilauea Volcano

Sulfur dioxide gas emissions from the crater of Pu‘u ‘Ō ‘ō on Kīlauea’s east rift zone and the vent within Halema‘uma‘u Crater at Kīlauea’s summit create volcanic pollution that affects the air quality of downwind communities.  Here, a USGS Hawaiian Volcano Observatory gas geochemist measures Pu‘u ‘Ō‘ō gas emissions using an instrument that detects gas compositions on the

...
October 28, 2010

Channelized flow

movie shows a channelized flow that broke out of the lava tube early this morning at the base of the pali, west of Kalapana. Even after traveling through the lava tube system for almost 10 kilometers (about 6.2 miles), the lava is sufficiently hot to be extremely fluid, and moves swiftly downslope. For scale, the channel is about 2 meters (about 2 yards) wide.

October 6, 2010

Pu`u `Ō `ō producing spattering

movie shows the flow that began erupting in Pu`u `Ō `ō crater this morning. The primary vent for the flow was producing small pulsating spattering that had built a small rampart on its south side. The final portion of the video is shown at x10 speed with a wide view, and shows how the spattering vent is supplying the flow.

September 28, 2010

Successive littoral explosions at the Puhi-o-Kalaikini ocean entry

movie captures a short period of successive littoral explosions at the Puhi-o-Kalaikini ocean entry, where lava exiting the tube enters the water. The explosions were throwing ejecta up to about 20 meters. The video was taken with a high zoom factor from the top of the sea cliff, well away from the entry point and not on the lava delta.

Lava deltas should not be

September 21, 2010

Active lava lake deep within the vent cavity at Halema`uma`u crater

The lava lake deep within the vent cavity at Halema`uma`u crater remains active, with ongoing degassing and circulation of lava. This Quicktime movie shows the view in the vent today with a thermal camera, and the video is set at x4 speed to better show the slowly moving lava surface. Today, the lava surface was moving at a rate of about 18 meters per minute (or about 0.7

Aerial photograph of Laysan Island, Hawaii
July 24, 2010

Aerial photograph of Laysan Island, Hawaii

An aerial photograph of Laysan Island, Hawaii, part of the Papahanaumokuakea Marine National Monument.

Image: Kilauea Lava FLows Advance Toward Kalapana
July 23, 2010

Kilauea Lava FLows Advance Toward Kalapana

In July 2010, lava erupted from Kilauea Volcano's east rift zone burned vegetation on the coastal plain as active flows advanced toward Kalapana Gardens, the same area inundated by lava flows in 1990. Two homes in the subdivision were destroyed by lava in 2010 -- one in July and one in November.

Mauna Loa rumbled and stretched as it awakened from a 25-year slumb...
July 16, 2010

Mauna Loa rumbled and stretched as it awakened from a 25-year slumber

Lava fountains up to 20 m (65 ft) high erupted from fissures on the north flank of Mauna Loa early Sunday morning, July 6, 1975. USGS photo.

Image: Kilauea July 2007 Eruption Flow (Map)
July 14, 2010

Kilauea July 2007 Eruption Flow (Map)

Map showing the extent of the July 2007 eruption flow field relative to surrounding communities. Light red is the extent of the July 2007 eruption flow field. Reddish-brown is the extent of the currently-active Quarry flow as of July 8, 2010, while bright red shows the flow field expansion of the Quarry flow mapped by HVO geologists between July 8 and 14. Flows erupted

...
Filter Total Items: 2,169
Drawing depicts Pu`u `O`o with a lava fountain, whose flow went underground through a lava tube, then poured into the ocean
January 16, 2003

On January 4, as lava flowed from the Pu`u `O`o cone 11 km (7 miles) to the south shoreline of Kilauea Volcano, the staff of the Hawaiian Volcano Observatory welcomed the public to our Open House in the Park, celebrating the twentieth anniversary of the eruption.

USGS science for a changing world logo
December 27, 2002

On January 3, 2003, Kilauea Volcano, perhaps the world’s most active volcano on the Island of Hawai`i, will have been erupting continuously for 20 years. Since the eruption began in 1983, lava flows have covered 43 square miles of the volcano, added nearly 550 acres to the island, created local volcanic air pollution known as "vog," and drawn millions of people to experience and enjoy volcan

USGS
December 27, 2002

On January 3, 2003, Kilauea Volcano, perhaps the world’s most active volcano on the Island of Hawai`i, will have been erupting continuously for 20 years. Since the eruption began in 1983, lava flows have covered 43 square miles of the volcano, added nearly 550 acres to the island, created local volcanic air pollution known as "vog," and drawn millions of people to experience and enjoy...

USGS
December 26, 2002

As we approach the end of 2002, we pause to look back at the year. What can we say about earthquakes in 2002?