Images

New fissure eruption SW of Pu'u 'O 'o between Pu'u 'O 'o and Napau crater. Spatter is reaching 15-20m into the air, above the trees. Pu'u 'O 'o in the background.

New fissure eruption SW of Pu'u 'O 'o between Pu'u 'O 'o and Napau crater. Spatter is reaching 15-20m into the air, above the trees.

View to the SW at the new fissure eruption between Pu'u 'O 'o and Napau. Cracks in the foreground could be seen opening as photo was being taken.

View looking along recently opened fissure segment crossing tephra flats SW of Pu'u 'O 'o, which is in the background.

View along fissure looking NE toward Pu'u 'O 'o shrouded in clouds in the background. Fissure segment in forest has shut down.

View toward the SW of fissure eruption. Fissure segment in forest has shut down. Compare to earlier photos before fissure opened up in tephra.

InSAR image Kīlauea, Hawai‘i, Mar. 2011. Kamoamoa fissure trace is indicated by the red line.

Village of Belacázar, adjacent to the river Paez. Photo taken four years after the 2008 lahar, but the trace of the deposit and destruction is still visible.

As lava entered the sea in July 2008, littoral explosions sent incandescent lava fragments skyward, building a small littoral cone on the flank of Kīlauea. USGS photo by B. Gaddis.

Unusually high tides, sometimes called "king tides," offer a preview of coastal flooding likely to result from rising sea level. In this photograph, taken during a king tide on February 17, 2011, waves overtop Pier 14 in San Francisco, California.

Since the opening of the Overlook vent in Halema‘uma‘u Crater in 2008, FTIR spectroscopy has been used to monitor summit eruptive-gas composition. Infrared energy emitted by the lava lake surface (top left) is absorbed by gases present in the path between the instrument and the lak surface.

Thousands were saved by accurate eruption forecasts of Mount Merapi, Indonesia. House in the village of Kopeng, 6 km (3.7 miles) from summit of Mount Merapi, destroyed by the explosive eruption.

Blocky, non-vesicular ash particle indicative of water-magma interaction.

SEM Images of ash particles from the 1989 eruption of Redoubt Volcano, Alaska.

Sitka, AK.

An HVO scientist wearing a gas mask collects GPS data using a roving instrument on the west flank of Pu‘u ‘Ō‘ō. USGS Photo.

Absolutes building at Sitka magnetic observatory Alaska.

Absolutes and variations buildings at Sitka, AK magnetic observatory.

Electronics building at Sitka magnetic observatory Alaska.

An HVO scientist and volunteer work to upgrade the power system of a seismic station located in the Ka‘ū desert on Kīlauea's southwest rift zone. USGS Photo.

Gas sampling from a fumarole on the rim of Halema‘uma‘u Crater within Kīlauea caldera, Hawai‘i.