Images

Absolutes pier curing at Deadhorse geomagnetic observatory.

Lighting above absolutes pier at Deadhorse geomagnetic observatory.

Concrete pour for pier at Deadhorse geomagnetic observatory.

Instrument pier during concrete pour at Deadhorse geomagnetic observatory.

Window prior to glass installation at Deadhorse geomagnetic observatory.

More than 110 sinkholes formed in the Dover area of Florida during a freeze event in January 2010. Ground water levels dropped to record-setting lows as farmers pumped water to irrigate their plants for protection from the cold temperatures. The sinkholes destroyed homes, roads and sections of cultivated areas.

More than 110 sinkholes formed in the Dover area of Florida during a freeze event in January 2010. Ground water levels dropped to record-setting lows as farmers pumped water to irrigate their plants for protection from the cold temperatures. The sinkholes destroyed homes, roads and sections of cultivated areas.

Cracks shown here in the exterior and supporting structures of this home are indicative of subsidence damage associated with sinkhole activity.

Cracking along exterior walls is a sign of subsidence activity. Such severe structural damage from sinkholes can destroy homes and other structures.

More than 110 sinkholes formed in the Dover area of Florida during a freeze event in January 2010. Ground water levels dropped to record-setting lows as farmers pumped water to irrigate their plants for protection from the cold temperatures. The sinkholes destroyed homes, roads and sections of cultivated areas.

Sinkholes damage roadways and require constant maintenance for road safety. More than 110 sinkholes formed in the Dover area of Florida during a freeze event in January 2010. Ground water levels dropped to record-setting lows as farmers pumped water to irrigate their plants for protection from the cold temperatures.

Sinkholes damage roadways and require constant maintenance for road safety. More than 110 sinkholes formed in the Dover area of Florida during a freeze event in January 2010. Ground water levels dropped to record-setting lows as farmers pumped water to irrigate their plants for protection from the cold temperatures.

More than 110 sinkholes formed in the Dover area of Florida during a freeze event in January 2010. Ground water levels dropped to record-setting lows as farmers pumped water to irrigate their plants for protection from the cold temperatures. The sinkholes destroyed homes, roads and sections of cultivated areas.

Photo of shipwreck beached in Southern CA.

Christopher Reich core drills coral to collect cores for paleoclimate analyses.

Surface-water dissolved iron sampling from a ship, while underway, through Teflon-lined tubing secured to a rope, towed from one meter below the surface, using a continuously pumping system.

Sunrise behind Kayak Island, near the mouth of the Copper River, coastal Gulf of Alaska.

Mountains towering above the mouth of the Copper River from the coastal Gulf of Alaska.

Sunrise on Marblehead Neck MA.

Sunrise behind Kayak Island, near the mouth of the Copper River, coastal Gulf of Alaska.

Harbor in Cordova, AK.