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.

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May 19, 1995

The main function of the U.S. Geological Survey's Hawaiian Volcano Observatory is to reduce the risk from volcanic activity.

May 12, 1995

The current eruption along Kīlauea's East Rift Zone continues with passive effusion of lava. The lava is transported underground to the coast along the western edge of the flow field, where it enters the ocean after cascading over an ancient sea cliff.

May 5, 1995

Sitting at lunch on Wednesday, many residents of the island of Hawaii might have thought that someone or something had kicked their chairs. Of course, they were feeling the ground shaking generated by the sequence of small earthquakes beneath the south flank of Kīlauea Volcano that was reported in other news stories.

Kīlauea lava flow status as of April 30, 1995...
April 30, 1995

The 12-year-long eruption on Kīlauea's east rift zone continues, with vents on the southwestern flank of the Pu`u `O`o cone feeding directly into lava tubes. These tubes form within active lava flows and initially are very shallow.

April 21, 1995

A team of volcanologists from the U.S. Geological Survey has been monitoring an eruption that began just after midnight on April 3 on Fogo in the Cape Verde Islands off the west coast of Africa.

April 14, 1995

Many of the islands that dot the center of the Pacific Ocean are made up of active, dormant, or extinct volcanoes, whose geologic histories are characteristic of "hot spot" volcanism.

April 7, 1995

April 10th marks the aniversary of the 1926 eruption of Mauna Loa Volcano. The eruption was preceded by several widely felt earthquakes about one hour before the outbreak of lava, and volcanic tremor was recorded on the few seismigraphs installed on the island about a half hour before the felt earthquakes. 

Kīlauea eruption status, May 13, 1994...
March 31, 1995

The 12-year long eruption along Kīlauea's east rift zone continued without interruption during the past two weeks. 

Deep earthquakes and lithospheric flexure...
March 24, 1995

Last Sunday evening, March 19, the Hawaiian Islands were shaken by a moderate earthquake located south of Kahoolawe and west of Hawaii. The earthquake occurred at 10:30 p.m., had a magnitude of 4.5, and was located about 30 miles deep.

Kīlauea eruption status—lava flows moving toward sea...
March 19, 1995

Kīlauea's 12-year-old East Rift Zone eruption continues with lava issuing from vents on the southwest flank of Pu'u 'O'o.

March 10, 1995

The "Volcano Watch" column from January 22, which provided information about earthquake damage from the Kobe earthquake in Japan and then described some ways to reduce damage from future earthquakes here in Hawaii, has generated quite a lively discussion in the "Letters to the Editor" section of the Hawaii Tribune Herald.

March 3, 1995

The U.S. Geological Survey has been working with the JASON Project, which began filming this past Monday in Hawaii Volcanoes National Park, to produce a series of interactive, live, educational broadcasts aimed at classes from upper elementary grades to high school.