Images

Pu‘u ‘Ō‘ō crater, following the collapse of the crater floor on August 3, has been filled with thick fume. A very tiny flow, visible only with a thermal camera, was active on the crater floor.

This thermal image, looking southwest, shows the very small flow, at the bottom of the image, active in the bottom of Pu‘u ‘Ō‘ō crater. In the upper right, the active flows on the lower west flank of Pu‘u ‘Ō‘ō can be seen.

The new lava lake in Pu‘u ‘Ō‘ō has buried much of the floor of the August 3, 2011, collapse crater beneath a maximum of about 45 m (~148 ft) of lava. Most of the lava upwells at the east end of the lake (lower right) and flows toward the west, much like the lava lake prior to the August 3 flank breakout and crater collapse.

The new lava lake has become slightly perched above the surrounding crater floor, as shown by the distinct levees visible in this photo.

This photo, similar to the previous, was taken from the same location as photos posted on July 21 and June 9 (and several other dates scattered over the past several months) to provide a comparison to past activity in Pu‘u ‘Ō‘ō.

USGS scientists assembling a novel profiling arm to measure suspended sediment in the benthic boundary layer. This large seafloor platform was later deployed for several months off Martha's Vineyard, MA as part of the Optics Acoustics and Stress In Situ (OASIS) Project in 2011.

The image is from the Martian southern polar region. CO2 ice shown here is about 10 feet thick, and the semi-circular depressions are about 200 ft across. 

U.S. Geological Survey geographer Nadine Golden (center, kneeling) works with USGS marine operations staffer Cordell Johnson (right) and a deckhand (left) to deploy a camera sled from the research vessel Coral Sea. The sled is towed close to the seafloor and collects real-time photographs and videos.

"The great inflated cylinder of black glass which formed over the sunken island, Aug. 18, 1911" (Frank Perret).

Oblique aerial photograph near Rodanthe, North Carolina, looking south along the coast on August 30, 2011, three days after landfall of Hurricane Irene. 

Deploying the airgun array from CCGS Louis S. St-Laurent. USCGC Healy can be seen in the background.

CCGS Louis S. St-Laurent following the path created by USCGC Healy

During hurricanes the USGS deploys storm-surge monitoring instruments along the coasts, sounds, and bays in impacted areas to gauge how high hurricanes push water in rivers, bays and other areas. The sensors are crucial for forecasting future storms and assessing hurricane damage.

During hurricanes the USGS deploys storm-surge monitoring instruments along the coasts, sounds, and bays in impacted areas to gauge how high hurricanes push water in rivers, bays and other areas. The sensors are crucial for forecasting future storms and assessing hurricane damage.

During hurricanes the USGS deploys storm-surge monitoring instruments along the coasts, sounds, and bays in impacted areas to gauge how high hurricanes push water in rivers, bays and other areas. The sensors are crucial for forecasting future storms and assessing hurricane damage.

During hurricanes the USGS deploys storm-surge monitoring instruments along the coasts, sounds, and bays in impacted areas to gauge how high hurricanes push water in rivers, bays and other areas. The sensors are crucial for forecasting future storms and assessing hurricane damage.

John Erbland, Hydrologic Technician with the USGS South Carolina Water Science Center, holds a white board with information on the Hurricane Irene storm surge sensor deployment on a pier by the U.S. Coast Guard Station in the town of Wrightsville Beach.

Extensive, contiguous mortality of piñon pine, ponderosa pine, and Douglas-fir trees, killed in the first afternoon and evening of the 2011 Las Conchas Fire in the Jemez Mountains, New Mexico. Forest drought stress is highly correlated with mortality from poor growth, bark beetle outbreaks, and high-severity fire.

Flood-alert instrument tower with electronics shelter and precipitation gage at top of tower.

Electronics inside the instrument shelter, which includes a high-data-rate transmitter (upper right) and line-of-sight receiver (middle left). The line-of-sight receiver picks up transmissions from the remote rain gage at the look-out area at the top of the Montezuma Pass, Arizona.

Stream channel cross-section measurements—instrument that uses laser pulses to survey distance to a reflector operated by a second crew member, Mount St. Helens.