Images

By 4:42 pm on December 13, the sun has set and it is time leave Wolverine Glacier.

Extending a mass balance stake at site EC on upper wolverine glacier. These stakes are used to measure snow accumulation and ablation (melt). 

The wind was too strong for a helicopter to land, therefore, glaciologist skied down Wolverine Glacier to Paradise Lake.

Landsat 9 image of Columbia Glacier, Alaska on Sept. 17, 2025.

When sea ice is available female walruses and young rest on ice pans near their foraging sites. When sea ice is absent walruses come to gather on shore where they may be surveyed.  USGS works with local authorities and residents to survey walrus herds onshore.

A die-off of primarily Black-legged Kittiwakes took place from July-September 2025 in Kachemak Bay and killed hundreds of birds as well as several species of marine mammals. There is not yet an identified cause of death. 

A shelf full of legacy data collected on seabirds in Cook Inlet and Glacier Bay, Alaska.

Alaska Science Center Data Management staff organize, scan, and digitally archive physical data. Once published as part of a data release, the physical data are organized and placed into banker boxes, labeled with pertinent information, such as the data release DOI, and moved to a secure location.

Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.

Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.

Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.

Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.

Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.

Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.

Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.

Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.

Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.

Map showing locations of placer mines in the Alaska Resource Data File (ARDF, red crosses), primary mineral districts that contain targeted critical minerals (black boxes) and locations that were sampled by the USGS in 2022 through 2024 (yellow stars).

USGS scientists measure flooding on the Mendenhall River as water releases from Suicide Basin’s glacier-dammed lake on August 13, 2025. 

The sun sets over Katmai National Park and Preserve. Katmai is one of four monitoring sites for the Nearshore Component of the Gulf Watch Alaska program.

Ridged hull inflatable skiffs are used by scientists to conduct rocky intertidal monitoring for the Nearshore Component of the Gulf Watch Alaska program. Data are collected to estimate percent cover and densities of intertidal invertebrates and algae to assess change in communities from sheltered rocky shorelines.