Sediment core showing sandy tsunami deposits over soil from an upland environment on Sitkalidak Island, Alaska.
Images
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Sediment core showing tsunami deposits on Sitkalidak Island, Alaska
Sediment core showing sandy tsunami deposits over soil from an upland environment on Sitkalidak Island, Alaska.
Pipetting PCR products into an acrylamide gel
Rob Wilson pipetting PCR products into an acrylamide gel; after electrophoresis he'll be able to visualize fragment size differences within and among individuals.
Rob Wilson pipetting PCR products into an acrylamide gel; after electrophoresis he'll be able to visualize fragment size differences within and among individuals.
Dolly Varden in a minnow trap in the Agashashok River drainage
Dolly Varden in a minnow trap in the Agashashok River drainage. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.
Dolly Varden in a minnow trap in the Agashashok River drainage. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.
Collecting otoliths from sockeye salmon on the Salmon Lake shoreline
Chris Zimmerman removing otoliths from sockeye salmon carcasses on the shoreline of Salmon Lake. Otoliths are used to read age of a fish and other chemical signatures over time.
Chris Zimmerman removing otoliths from sockeye salmon carcasses on the shoreline of Salmon Lake. Otoliths are used to read age of a fish and other chemical signatures over time.
Soil pit on Sitkalidak Island, Alaska
Soil pit exposing tsunami deposits on Sitkalidak Island, Alaska.
Soil pit exposing tsunami deposits on Sitkalidak Island, Alaska.
Collecting water chemistry samples
Ryan collects water chemistry samples during a subsurface tracer experiment while Matt observes.
Ryan collects water chemistry samples during a subsurface tracer experiment while Matt observes.
Preparing for a subsurface tracer test
Matt and Josh Koch preparing for a subsurface tracer test on the West Twin Creek hillslope.
Matt and Josh Koch preparing for a subsurface tracer test on the West Twin Creek hillslope.
A Common Murre swimming in the waters of Prince William Sound in 2015
A Common Murre swimming in the waters of Prince William Sound, Alaska.
A Common Murre swimming in the waters of Prince William Sound, Alaska.
Large storm surges in the Yukon-Kuskokwim Delta, AK
Large storm surges in the Yukon-Kuskokwim Delta, AK lead to increased erosion and sedimentation of coastal waterways
Large storm surges in the Yukon-Kuskokwim Delta, AK lead to increased erosion and sedimentation of coastal waterways
Electromagnetic measurements of the Earth’s crust in Alaska
A scientist and the helicopter pilot work together to install geophysical instrumentation in a remote region west of the Neacola Mountains, south-central Alaska. An array of cables were buried in shallow trenches for up to 48 hours to measure the electrical conductivity of the bedrock at that location.
A scientist and the helicopter pilot work together to install geophysical instrumentation in a remote region west of the Neacola Mountains, south-central Alaska. An array of cables were buried in shallow trenches for up to 48 hours to measure the electrical conductivity of the bedrock at that location.
Installing geophysical equipment northwest of Lake Clark Natl Park
USGS scientist Beth Burton and helicopter pilot Drew Rose install geophysical equipment northwest of Lake Clark National Park, Alaska
USGS scientist Beth Burton and helicopter pilot Drew Rose install geophysical equipment northwest of Lake Clark National Park, Alaska
Geologist checks a granitic rock before geochemistry and geochronology
USGS geologist Erin Todd examines granitic rocks in outcrop before collecting samples for geochemistry and geochronology in Lake Clark National Park, Alaska.
USGS geologist Erin Todd examines granitic rocks in outcrop before collecting samples for geochemistry and geochronology in Lake Clark National Park, Alaska.
Young Arctic Warbler with a band, Seward Peninsula, Alaska
Young Arctic Warbler with a band, Seward Peninsula, Alaska.
Young Arctic Warbler with a band, Seward Peninsula, Alaska.
Pulling in the mid-water trawl from the R/V Alaskan Gyre
Pulling in the mid-water trawl from the R/V Alaskan Gyre
Pulling in the mid-water trawl from the R/V Alaskan Gyre
R/V Alaskan Gyre in Prince William Sound, Alaska
R/V Alaskan Gyre in Prince William Sound, Alaska
R/V Alaskan Gyre in Prince William Sound, Alaska
Identifying and sorting clams by species
Identifying and sorting clams by species. This sample came from benthic trawls on the Norseman II.
Identifying and sorting clams by species. This sample came from benthic trawls on the Norseman II.
Field camp in the Yukon-Kuskokwim Delta, western AK
Field camp in the Yukon-Kuskokwim Delta, western AK, where USGS and other ecologists monitor impacts of climate changes, erosion, sedimentation, and flooding on coastal ecosystems
Field camp in the Yukon-Kuskokwim Delta, western AK, where USGS and other ecologists monitor impacts of climate changes, erosion, sedimentation, and flooding on coastal ecosystems
Panoramic view of Chakachamma Lake near Lake Clark, Alaska
Panoramic view of entrance to Chakachamma Lake (near Lake Clark, Alaska).
Panoramic view of entrance to Chakachamma Lake (near Lake Clark, Alaska).
Pacific walrus hauled out on sea ice in the Chukchi Sea
Pacific walrus hauled out on sea ice in the Chukchi Sea.
Pacific walrus hauled out on sea ice in the Chukchi Sea.
Male Arctic Warbler singing on the Seward Peninsula, Alaska
Male Arctic Warbler singing 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.
Male Arctic Warbler singing 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.
Eelgrass Survey in Alaska
Carol Damberg (USFWS) conducting survey of eelgrass (Zostera marina) in Izembek Lagoon, Alaska, 2015.
Carol Damberg (USFWS) conducting survey of eelgrass (Zostera marina) in Izembek Lagoon, Alaska, 2015.