Images

A sonar on a bottom platform while steaming to the deployment site in the Columbia River in 2013.  The 3 platforms acquired data on currents and sediment transport at the river mouth over several months.

The seismic records or waveforms are from two seismic stations, and show the highly repetitive and similar nature of the seismic events.

Map showing one-year probability of accumulation of 1 centimeter (0.4 inch) or more of tephra from eruptions of volcanoes in the Cascade Range.

Tabernacle Hill tuff cone, part of the Black Rock Desert Volcanic Field in Utah, used to house a lava lake in the center of the crater.

CalVO geologist Mae Marcaida examines thin layers of volcanic ash sandwiched between thick beds of sediment deposited by ancestral Mono Lake in eastern California. Each ash layer is evidence of a past explosive eruption of the Mono Craters, which began erupting about 65,000 years ago just south of present-day Mono Lake.

Map of Mount St. Helens Crater Glacier created from LiDAR data acquired September 2009.

Photo of the seafloor in Block Island Sound showing a rock crab and several shrimp on a boulder that is covered with bryozoans. The photo was collected in support of research and management activities (e.g., wind farms and fisheries) along the Rhode Island inner continental shelf.

Resistivity values for wet (average 7.8 Wt.% moisture content) compacted (lighter shades) and uncompacted (darker shades) fresh ash samples.

The summit lava lake is contained within the Overlook crater, which is about 160 m (520 ft) by 210 m (690 ft) in size, and set within the larger Halema‘uma‘u Crater. The lava lake this week has been about 50 m (160 ft) below the rim of the Overlook crater.

A closer view of the active flows at the forest boundary, and the numerous plumes of smoke resulting from active lava igniting ‘oKAHAKOhi‘a trees and other vegetation.

A closer look at the summit lava lake.

A closer look at the summit lava lake.

The Kahauale‘a 2 flow continues to slowly move through the forest northeast of Pu‘u ‘Ō‘ō. Today, the active flow front was 6.3 km (3.9 miles) northeast of the vent on Pu‘u ‘Ō‘ō. Pu‘u ‘Ō‘ō is just left of the center of the photograph in the distance, partially obscured by the smoke.

The summit lava lake is contained within the Overlook crater, which is about 160 m (520 ft) by 210 m (690 ft) in size, and set within the larger Halema‘uma‘u Crater. The lava lake this week has been about 50 m (160 ft) below the rim of the Overlook crater.

Sandy Brosnahan transporting a weather buoy into the Woods Hole Coastal and Marine Science Center’s operational facility to continue the process of getting it ready to deploy.  This buoy was one of 6, deployed by John Warner and others, to measure wind speed, direction, pressure, and temperature off the coast of Fire Island, NY.  Paired with each weather b

This fissure eruption on Kīlauea's East Rift Zone in March 2011 reminds us of how exciting it can be to live on or near active volcanoes, but also why we need to be aware of the hazards they pose.

This image was captured on Tuesday, December 10 by Landsat 8, a new NASA Earth-observing satellite that was launched in February of this year and entered service in May. The image shows the Pu‘u ‘Ō‘ō lava flow field on Kīlauea's east rift zone. Although this is a false-color image, the color map has been chosen to mimic what the human eye would expect to see.

Mount St. Helens and North Fork Toutle River Channel.

Pele's hair (thin strands of volcanic glass drawn out from molten lava) is abundant around Halema`uma`u Crater (Kīlauea, Hawaii). It originates from the active, spattering lava lake and in some areas, makes a nearly continuous carpet, highlighted here in the afternoon sun.

A close-up of Pele's hair at Halema‘uma‘u.

This thermal image looks northeast from Pu‘u ‘Ō‘ō, and shows how the subsurface lava tubes feeding the active breakouts on the Kahauale‘a 2 flow are clearly visible as lines of slightly higher temperatures on the surface.