Images

Photo of the Puhi-o-Kalaikini lava delta taken on Thursday, October 28, 2010, prior to the collapse. The line shows the approximate inland boundary of the area that collapsed into the ocean on November 2.

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 ga

MODIS Aqua 1-km resolution true color satellite image shows a resuspended ash cloud generated from high winds scouring the dry, unvegetated deposits in the Valley of Ten Thousand Smokes. The cloud stretches across Shelikof Strait to western Kodiak Island.

Seismometer installed in a vault above ground at Mount Baker, Washington. These are typically buried but Forest Service restrictions required it be installed above ground.

Pacific Northwest Seismic Network scientists checking data prior to uncovering an above ground seismic vault, Mount Baker, Washington.

USGS installed sensors to track water pressure through the Spirit Lake outflow tunnel. View from inside the tunnel during the 2010 tunnel closure and inspection period. Spirit Lake is located north of Mount St. Helens.

Kulshan Caldera's intracaldera ignimbrite deposit near Upper Swift Creek in the northwestern Mount Baker volcanic field, Washington.

YVO's mobile webcam system as deployed in September 2010 near Lake Butte.

Mount St. Helens, as viewed from Coldwater Ridge around sunset.

Beacon Rock (Washington), Boring Volcanic Field, is the central core of a cinder cone that remained intact after its carapace was stripped away by the Missoula Floods about 15,000 years ago.

National Park Service employee inspects a Plate Boundary Observatory strainmeter/seismometer station.

Ken Honma, an electronics technician with the Hawaiian Volcano Observatory for almost 40 years, retired from the U.S. Geological Survey on July 31, 2010.

Ken Honma, shown here in August 1973, repaired stations and replaced batteries at remote seismic stations to keep the USGS Hawaiian Volcano Observatory seismic network running smoothly.

Lava exited the tube at the sea cliff and poured out onto the growing delta.

Mount Rainier Teacher's Workshop group photo, July 2010, Washington.

Page from Plan Your Trip to Mount Rainier, an outreach activity used during a teacher workshop.

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.

Pinnacles formed in Mazama pyroclastic flow deposit as erosion revealed fumarole chimneys that formed shortly after 7,700 ka eruption released gas, Crater Lake.

Crater Lake panorama seen from the lake's southern shore. Wizard Island is cone in western portion of lake. Oregon

On July 6, 1975, eruptive fissures opened along Mauna Loa

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.