USGS research geologists Jamey Jones (left) and Erin Todd (right) discuss the "big picture" geology in their project area in and around Lake Clark National Park. Redoubt volcano in background left; baseball-sized cobbles on ground at researchers feet are pumice cobbles from the 2009(?) eruption of Redoubt volcano.
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Geologists discuss big picture geology of Lake Clark National Park
USGS research geologists Jamey Jones (left) and Erin Todd (right) discuss the "big picture" geology in their project area in and around Lake Clark National Park. Redoubt volcano in background left; baseball-sized cobbles on ground at researchers feet are pumice cobbles from the 2009(?) eruption of Redoubt volcano.
Geologist collects sample with helicopter in background, Lake Clark
Jamey Jones collects a sample of Talkeenta Formation volcaniclastic sandstone for detrital zircon geochronology.
Jamey Jones collects a sample of Talkeenta Formation volcaniclastic sandstone for detrital zircon geochronology.
Cabin Bay on Naked Island in Prince William Sound
A scenic of Cabin Bay on Naked Island in Prince William Sound
A scenic of Cabin Bay on Naked Island in Prince William Sound
Schools of Pacific sand lance in Cabin Bay, Prince William Sound
Schools (shadows along the shore) of Pacific sand lance in Cabin Bay, Prince William Sound
Schools (shadows along the shore) of Pacific sand lance in Cabin Bay, Prince William Sound
Three Arctic Terns sitting on a log in Prince William Sound
Three Arctic Terns sitting on a log floating in the water in Prince William Sound.
Three Arctic Terns sitting on a log floating in the water in Prince William Sound.
Biologists with cast net caught forage fish in Prince William Sound
Brielle Heflin and Sarah Schoen catching forage fish with a cast net in Prince William Sound.
Brielle Heflin and Sarah Schoen catching forage fish with a cast net in Prince William Sound.
Black-legged Kittiwake captured 2 Pacific sand lance
Black-legged Kittiwake captured 2 Pacific sand lance.
Black-legged Kittiwake captured 2 Pacific sand lance.
Black-legged Kittiwake foraging on Pacific sand lance
Black-legged Kittiwakes foraging on Pacific sand lance.
Black-legged Kittiwakes foraging on Pacific sand lance.
Short-eared Owl on the Seward Peninsula, Alaska
Short-eared Owl. This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
Short-eared Owl. This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
Black-legged Kittiwakes foraging on Pacific sand lance
Black-legged Kittiwakes foraging on Pacific sand lance
Black-legged Kittiwakes foraging on Pacific sand lance
Vanessa von Biela with a Chinook salmon on the Yukon River
Vanessa von Biela with a Chinook salmon on the Yukon River.
Vanessa von Biela with a Chinook salmon on the Yukon River.
Randy Brown adjusts a fish wheel trap on the Yukon River
Randy Brown adjusts a fish wheel trap on the Yukon River that will catch Chinook salmon.
Randy Brown adjusts a fish wheel trap on the Yukon River that will catch Chinook salmon.
Fish drying at a subsistence fish camp along the Yukon River
Fish drying at a subsistence fish camp along the Yukon River.
Fish drying at a subsistence fish camp along the Yukon River.
Constructing a limnocorral at McKinley Lake
Constructing a limnocorral at McKinley Lake for Elodea spp. experiment. This experiment is studying the effect of the invasive species Elodea spp. on aquatic ecosystems.
Constructing a limnocorral at McKinley Lake for Elodea spp. experiment. This experiment is studying the effect of the invasive species Elodea spp. on aquatic ecosystems.
Deploying of a limnocorral at McKinley Lake
Deployment of a limnocorral at McKinley Lake, near Cordova, Alaska for Elodea spp. experiment. This experiment is studying the effect of the invasive species Elodea spp. on aquatic ecosystems.
Deployment of a limnocorral at McKinley Lake, near Cordova, Alaska for Elodea spp. experiment. This experiment is studying the effect of the invasive species Elodea spp. on aquatic ecosystems.
Deployment of a limnocorral in McKinley Lake
A completed limnocorral positioned over a bed of Elodea spp.. This experiment is studying the effect of the invasive species Elodea spp. on aquatic ecosystems.
A completed limnocorral positioned over a bed of Elodea spp.. This experiment is studying the effect of the invasive species Elodea spp. on aquatic ecosystems.
Resource-2 AWiFS image over Norton Bay, Alaska
Resource-2 AWiFS image over Norton Bay, Alaska.
Resource-2 AWiFS image over Norton Bay, Alaska.
A male Willow Ptarmigan
A closeup of a male Willow Ptarmigan.
Investigating a trench across the Fairweather Fault
USGS Research Geologist Chris DuRoss investigates earthquake-faulted stratigraphy exposed in a hand-dug trench across the Fairweather Fault scarp. Location: Crillon Lake, Glacier Bay National Park, Alaska.
USGS Research Geologist Chris DuRoss investigates earthquake-faulted stratigraphy exposed in a hand-dug trench across the Fairweather Fault scarp. Location: Crillon Lake, Glacier Bay National Park, Alaska.
Walking along the Fairweather Fault scarp
USGS scientists Adrian Bender and Peter Haeussler walk along the base of a ~10 m tall escarpment formed during past ground-rupturing earthquakes on the Fairweather Fault. Location: Crillon Lake, Glacier Bay National Park, Alaska
USGS scientists Adrian Bender and Peter Haeussler walk along the base of a ~10 m tall escarpment formed during past ground-rupturing earthquakes on the Fairweather Fault. Location: Crillon Lake, Glacier Bay National Park, Alaska
Surveying the Fairweather Fault trace
USGS Geologist Adrian Bender surveys a trace of the 1958 Fairweather Fault earthquake surface rupture. The trace forms a linear, uphill-facing, 1-2 m tall escarpment flanked by trees that were likely tilted during the 1958 earthquake. Location: Crillon Lake, Glacier Bay National Park, Alaska.
USGS Geologist Adrian Bender surveys a trace of the 1958 Fairweather Fault earthquake surface rupture. The trace forms a linear, uphill-facing, 1-2 m tall escarpment flanked by trees that were likely tilted during the 1958 earthquake. Location: Crillon Lake, Glacier Bay National Park, Alaska.