Images

Bogue Phalia River near Leland, Mississippi.

View of the west channel and Upper monitoring station (Station 1), Chalk Cliffs, CO.

View southwest of Garfield Peak and Eagle Crags above Chaski Bay. Cliffs at caldera rim are andesite of Applegate Peak (unit aa; ca. 210-270 ka), overlain by two thin flows of andesite of Garfield Peak at top center (unit ag; 224 ±9 ka). Talus rests on flat top of massive slide block that consists of altered lavas of units aa, ak(?), and db(?).

Many species of corals grow directly on or near the Red Mangrove prop roots.

Eruptions in the Cascade Range during the past 4000 years. USGS GIP 64

This striking Flower Coral (Eusmilia fastigiata) grows with an assortment of sponges among Red Mangrove prop roots.

A low-flying helicopter towing a large cylindrical sensor, called a “bird,” collected airborne electromagnetic resistivity data in Nebraska. The helicopter flew about 200 feet above the ground at a speed of about 70 miles per hour.

Grand Canyon sand was photographed with a hand-held point-and-shoot camera in a waterproof housing.

Grinnell Glacier from Footbridge 2008 in color.

Grinnell Glacier from Footbridge 2008 in color.

Grinnell Glacier from Lake Josephine 2008 in color.

Grinnell Glacier from trail 2008 - color

Grinnell Glacier from trail 2008 in color.

Grinnell Glacier from trail 2008.

UNAVCO engineers drilling a borehole for instrument installation (left). Aerial view of borehole casing used to protect instruments from the elements found below the surface (right).

A pressurized, stable, hydrate-bearing sediment core can be fed through the IPTC body, shown here being used in Singapore to support the Indian National Gas Hydrates Program (NGHP1)

Irrigation groundwater well. Photo from USGS circular 1356 "Water Quality in the Mississippi Embayment-Texas Coastal Uplands Aquifer System and Mississippi River Valley Alluvial Aquifer, South-Central United States, 1994-2008."

Irrigation water from a groundwater well on a rice crop field. Photo from USGS circular 1356 "Water Quality in the Mississippi Embayment-Texas Coastal Uplands Aquifer System and Mississippi River Valley Alluvial Aquifer, South-Central United States, 1994-2008."

Kristen Hart releasing a satellite-tagged hawksbill sea turtle, August 2008, Dry Tortugas National Park.

A filtered vertical laser image, taken using a technique called light detection and ranging (LIDAR), of part of the Hayward Fault (red lines) in the City of Berkeley. The fault passes through the University of California Berkeley football stadium (left), and past earthquake movements have significantly offset Hamilton Gulch (center).

Groundwater Depletion in the United States (1900–2008)