Images

Family group (adult female and cub-of-the-year) photographed in September of 2015 departing the bowhead whale bone pile near the community of Kaktovik, AK.

Female and cub polar bear on land near Kaktovik, Alaska

Calving of Snow River Glacier in early September 2015, resulted in icebergs floating in Snow River Lake.

A view of the R/V Alaskan Gyre with a glacier in the background in Harriman Fjord in Prince William Sound, Alaska

Helicopter landing to pick up field personnel after a day of geologic mapping and sampling in the Fortymile region north of Tok, Alaska.

A high alpine tributary of the Agashashok River.

A mother caribou and her offspring, east of Chicken, Alaska (on the Yukon-Alaska border).

USGS scientist examining outcrops of strongly deformed and metamorphosed rock along Divide Mountain in the Yukon-Tanana upland of eastern Alaska

Half-meter-thick quartz veins cut across outcrops of granitic gneiss on Divide Mountain along the Alaska-Yukon border, August 2015

Sediment core showing sandy tsunami deposits over soil from an upland environment on Sitkalidak Island, Alaska.

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. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.

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 exposing tsunami deposits on Sitkalidak Island, Alaska.

Ryan collects water chemistry samples during a subsurface tracer experiment while Matt observes.

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, Alaska.

Large storm surges in the Yukon-Kuskokwim Delta, AK lead to increased erosion and sedimentation of coastal waterways

USGS scientist Beth Burton and helicopter pilot Drew Rose install geophysical equipment northwest of Lake Clark National Park, 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.

Fledgling Arctic Warbler on the Seward Peninsula, Alaska. This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystems Boreal-Arctic Transition Zone program.