Unified Interior Regions


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

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November 4, 1994

Beginning on October 21 and continuing through October 31, residents in parts of lower Puna have felt a sequence of small earthquakes. 

October 28, 1994

The nearly twelve-year-long eruption on Kīlauea's east rift zone had at least one additional pause in activity this past week.

October 21, 1994

Not only does Hawaii move up and down, as I described last week, it also moves horizontally. There are several ways to measure these movements, and a new, exciting technique has recently been added to the repertoire.

October 14, 1994

There is abundant evidence that the island of Hawaii is sinking, and that different parts of the island sink, or subside, at different rates and for different reasons. At any location, the net subsidence is the sum of these different types of subsidence and any change in global sea level.

October 7, 1994

The nearly 12-year-long eruption on Kīlauea's east rift zone took a short vacation this past week. No lavaerupted between Wednesday morning and Thursday afternoon, when lava once again reoccupied the same tube to the western ocean entry at Laeapuki and a small channelized 'a'a flow broke out of the tube in the center of the flow field above Kamoamoa. 

September 30, 1994

In Hawaii, the U.S. Geological Survey's (USGS) Hawaiian Volcano Observatory (HVO) is known for its work in Hawaiian volcano monitoring and hazards assessment and in conveying information to the public and to other government agencies.

September 23, 1994

Rabaul caldera, an active volcano located on the northern tip of New Britain island in Papua New Guinea, erupted violently this past week.

September 16, 1994

The Hawaiian Volcano Observatory is located on the northwest rim of Kīlauea caldera adjacent to the Jagger Museum. Because of its location within Hawaii Volcanoes National Park, many people have the mistaken impression that the Observatory is administered by the National Park Service. 

September 9, 1994

Kīlauea's east rift zone eruption at Pu'u 'O'o, which began in January 1983, continues. Lava is actively circulating in a pond inside the Pu'u 'O'o cone.

September 2, 1994

About nine months ago I wrote about a scientific drill hole in Hilo that was funded by the National Science Foundation to examine the long-term growth of a Hawaiian volcano.

Surface flows erupting; lava bench movement measured...
August 24, 1994

Several large surface lava flows from the eruption along Kīlauea's east rift zone occurred this past week. The largest of these flowed down the east side of the flow field between the Kamoamoa flows and those that surrounded Waha'ula several years ago. 

August 19, 1994

Earthquakes are a frequent occurrence on the Island of Hawaii. Rarely a week goes by that we do not experience at least one earthquake that is large enough to be felt.