Male Wilson's Warbler on the Seward Peninsula, Alaska . This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
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Male Wilson's Warbler on the Seward Peninsula, Alaska
Male Wilson's Warbler on the Seward Peninsula, Alaska . This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
A Common Murre holding a juvenile Pacific Herring at its colony
A Common Murre holding a juvenile Pacific Herring at its colony on Gull Island, Cook Inlet on July 3, 2017.
A Common Murre holding a juvenile Pacific Herring at its colony on Gull Island, Cook Inlet on July 3, 2017.
Male Wilson's Warbler in a shrub on the Seward Peninsula, Alaska
Male Wilson's Warbler. This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
Male Wilson's Warbler. This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
Shannon Waters Releases Chinook Salmon, Alaska
USGS biological science technician Shannon Waters releases a Chinook Salmon into an Alaskan river.
USGS biological science technician Shannon Waters releases a Chinook Salmon into an Alaskan river.
Seismic survey of the Queen Charlotte Fault
USGS scientists deploy a seismic streamer aboard the R/V David Starr offshore of southeast Alaska to study the Queen Charlotte Fault.
USGS scientists deploy a seismic streamer aboard the R/V David Starr offshore of southeast Alaska to study the Queen Charlotte Fault.
An aerial view of McKinley Lake, outside of Cordova, Alaska
McKinley Lake, outside of Cordova, Alaska. This is the site of deployment of limnocorrals for an Elodea spp. experiment.
McKinley Lake, outside of Cordova, Alaska. This is the site of deployment of limnocorrals for an Elodea spp. experiment.
Reseach vessel Ocean Starr
Research vessel Ocean Starr in Alaska.
Research vessel Ocean Starr in Alaska.
7 Million Landsat Scenes and Counting!
The Landsat archive, the world's longest continuously acquired collection of space-based, moderate-resolution land remote sensing data, has now surpassed 7 million scenes since Landsat 1 first began collecting data in July 1972.
The Landsat archive, the world's longest continuously acquired collection of space-based, moderate-resolution land remote sensing data, has now surpassed 7 million scenes since Landsat 1 first began collecting data in July 1972.
Geologist examines rocks at Darby Pluton, AK
USGS Geologist George Case examines granitic rocks in preparation for collecting samples for geochemistry and geochronology near the Boulder Creek prospect at the north end of the Darby pluton on the eastern Seward Peninsula.
USGS Geologist George Case examines granitic rocks in preparation for collecting samples for geochemistry and geochronology near the Boulder Creek prospect at the north end of the Darby pluton on the eastern Seward Peninsula.
Darby Mountain outcrop of quartz monzonite
Looking east past a typical Darby Mountain outcrop of quartz monzonite towards the contact between the pluton and Paleozoic marbles
Looking east past a typical Darby Mountain outcrop of quartz monzonite towards the contact between the pluton and Paleozoic marbles
Tony Fischbach's staff photo
Tony Fischbach's staff photo
Potassium feldspar phenocrysts in syenite
Stretched phenocrysts of potassium feldspar in syenite of the Kachauik pluton on the Bering Sea coast of the southeastern Seward Peninsula.
Stretched phenocrysts of potassium feldspar in syenite of the Kachauik pluton on the Bering Sea coast of the southeastern Seward Peninsula.
Lone male Yellow Warbler on the Seward Peninsula, Alaska
Lone male Yellow Warbler on the Seward Peninsula, Alaska. This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
Lone male Yellow Warbler on the Seward Peninsula, Alaska. This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
Elim village children explore beach outcrops with USGS geologists
USGS geologists (Andy Allard, Beth Drewes-Todd and Alan Pongratz) investigating the rocks exposed on the beaches near the village of Elim with the trusty local guides and eager budding geologists.
USGS geologists (Andy Allard, Beth Drewes-Todd and Alan Pongratz) investigating the rocks exposed on the beaches near the village of Elim with the trusty local guides and eager budding geologists.
Joel Schmutz with an Emperor Goose
Joel Schmutz holding an Emperor Goose
Joel Schmutz holding an Emperor Goose
Investigating a marine terrace along the Fairweather Fault
USGS scientists Kate Scharer, Richard Lease, and Adrian Bender excavate a marine terrace elevated tens of meters above sea level on the west side of the Fairweather Fault. Location: Icy Point, Glacier Bay National Park, Alaska.
USGS scientists Kate Scharer, Richard Lease, and Adrian Bender excavate a marine terrace elevated tens of meters above sea level on the west side of the Fairweather Fault. Location: Icy Point, Glacier Bay National Park, Alaska.
River terraces elevated along the Fairweather Fault
USGS scientists Richard Lease and Adrian Bender examine river terraces elevated tens of meters above the modern channel level on the west side of the Fairweather Fault. Location: Kaknau Creek, Icy Point, Glacier Bay National Park, Alaska.
USGS scientists Richard Lease and Adrian Bender examine river terraces elevated tens of meters above the modern channel level on the west side of the Fairweather Fault. Location: Kaknau Creek, Icy Point, Glacier Bay National Park, Alaska.
Black-capped Chickadee with a deformed crossed beak
A Black-capped Chickadee with a beak that has grown long and crossed
A Black-capped Chickadee with a beak that has grown long and crossed
Pulling GPR
Research Hydrologist Neil Terry (USGS) collects ground-penetrating radar (GPR) data. Using hydrogeophysical tools such as GPR enables scientists to collect images of the structure and conditions of the ice below them. (April 2017)
Research Hydrologist Neil Terry (USGS) collects ground-penetrating radar (GPR) data. Using hydrogeophysical tools such as GPR enables scientists to collect images of the structure and conditions of the ice below them. (April 2017)
Collecting GPR Data in Alaska
Research Hydrologist Neil Terry (USGS) collects ground-penetrating radar (GPR) data along an oil pipeline in Alaska. (April 2017)
Research Hydrologist Neil Terry (USGS) collects ground-penetrating radar (GPR) data along an oil pipeline in Alaska. (April 2017)