Images

Shaded relief image of Northern Cape Cod Bay, MA

Map of the island of Hispaniola that include the countries of Haiti and the Dominican Republic. Fault traces are shown as lines with the following descriptions: barbed=thrust fault; solid=strike-slip fault with arrows showing relative direction of motion; black and white=normal fault.

Sea Level Rise, Subsidence, and Wetland Loss. This video describes causes of wetland loss in the Mississippi River Delta. Rapid land subsidence due to sediment compaction and dewatering increases the rate of submergence in this deltaic system.

Seismicity is shown for January 17, 2010 through the Feb 8, 2010. Borehole seismometer B207 is located about 7 miles (12 km) northeast of the 2010 swarm. Seismic data are provided by the National Science Foundation funded Plate Boundary Observatory operated by UNAVCO.

Elliot State Forest.

Water molecules (1 red oxygen and 2 white hydrogens) form a pentagonal dodecahedron around a methane molecule (1 gray carbon and 4 green hydrogens). This represents 2 of the 8 parts of the typical Structure I gas hydrate molecule.

Volcanic monitoring types and methods employed by the USGS Volcano Hazards Program.

Mount Baker's northeastern face, Washington.

HVO geologist describes activity from Kīlauea Volcano during a field trip to the coastal lava flow field for members of the media in 2010.

Map of the Northeastern Caribbean: topography is in shades of green and bathymetry in shades of blue. Fault traces are shown as lines with the following descriptions: barbed=thrust fault; solid=strike-slip fault with arrows showing relative direction of motion; black and white=normal fault. Faults outlined in red have a potential to generate a large earthquake.

Sediment berm placement in the shoreface of northern Chandeleur Islands, Louisiana

Fast-moving lava flows erupted from Mauna Iki were hand-colored in this black-and-white photo taken on May 17, 1920. Historic photo courtesy of Roger and Barbara Myers.

Suspended sediment sample collection from the North Fork Toutle River above the Sediment Retention Structure, downstream from Mount St. Helens.

Solar-powered seismic station located near the summit of Mauna Loa Volcano, Hawai‘i.

MODIS Aqua 1 km true color satellite image showing resuspended volcanic ash cloud (arrow) generated from high winds scouring exposed ash on the Pacific side of the Katmai volcanic range. The cloud stretches across the Shelikof Straight and western Kodiak Island. Image ID 2010333 taken November 29, 2010. Courtesy NASA.

Electronics building at Ewa Beach, HI magnetic observatory.

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.

Aerial overview of the Old Faithful area from the northeast.

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.