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Browse images from a wide range of science topics covered by USGS.
Recovered river meanders along Kobuk River, Kobuk Valley National Park. Dominant ecotypes include Riverine Water, Riverine Loamy Moist Alder or Willow Tall Shrub, Riverine Gravelly-loamy Moist Circumalkaline White Spruce-Willow Forest, and Riverine Loamy Wet Circumacidic Wet Sedge Meadow.
Recovered river meanders along Kobuk River, Kobuk Valley National Park. Dominant ecotypes include Riverine Water, Riverine Loamy Moist Alder or Willow Tall Shrub, Riverine Gravelly-loamy Moist Circumalkaline White Spruce-Willow Forest, and Riverine Loamy Wet Circumacidic Wet Sedge Meadow.
Thermokarst lake, Seward Peninsula.
Thermokarst lake, Seward Peninsula.
Partially drained thermokarst lake with residual pool and patterned ground , Bering Land Bridge National Preserve, Seward Peninsula.
Partially drained thermokarst lake with residual pool and patterned ground , Bering Land Bridge National Preserve, Seward Peninsula.
South shore, Walker Lake, Gates of the Arctic National Park and Preserve. Dominant ecotypes include Upland Moist Dwarf Birch-Ericaceous-Willow Low Shrub, Upland Rocky-loamy Moist Circumacidic Alder-Willow Tall Shrub, and Upland Loamy Moist Circumalkaline Willow Low Shrub.
South shore, Walker Lake, Gates of the Arctic National Park and Preserve. Dominant ecotypes include Upland Moist Dwarf Birch-Ericaceous-Willow Low Shrub, Upland Rocky-loamy Moist Circumacidic Alder-Willow Tall Shrub, and Upland Loamy Moist Circumalkaline Willow Low Shrub.
Thermokarst lake and river meanders, Seward Peninsula. Dominant ecotypes include Lowland Lake, Lowland Organic-rich Wet Circumacidic Willow Low Shrub, Upland Organic-rich Moist Acidic Dwarf Birch-Tussock Shrub, and Upland Rocky-Loamy Moist Alkaline Sedge-Dryas Meadow.
Thermokarst lake and river meanders, Seward Peninsula. Dominant ecotypes include Lowland Lake, Lowland Organic-rich Wet Circumacidic Willow Low Shrub, Upland Organic-rich Moist Acidic Dwarf Birch-Tussock Shrub, and Upland Rocky-Loamy Moist Alkaline Sedge-Dryas Meadow.
Coastal brackish marsh, Bering Land Bridge National Preserve, Seward Peninsula
Coastal brackish marsh, Bering Land Bridge National Preserve, Seward Peninsula
Tundra lakes, Selawik National Wildlife Refuge
Tundra lakes, Selawik National Wildlife Refuge
Hardwood patch on high ground, Selawik National Wildlife Refuge. Dominant ecotypes include Upland Moist Dwarf Birch-Ericaceous-Willow Low Shrub, upland Organic-rich Moist Acidic Dwarf Birch-Tussock Shrub, and Upland Rocky-Loamy Moist Circumacidic Alder-Willow Tall Shrub.
Hardwood patch on high ground, Selawik National Wildlife Refuge. Dominant ecotypes include Upland Moist Dwarf Birch-Ericaceous-Willow Low Shrub, upland Organic-rich Moist Acidic Dwarf Birch-Tussock Shrub, and Upland Rocky-Loamy Moist Circumacidic Alder-Willow Tall Shrub.
Flooded thermokarst area with high escarpment, Bering Land Bridge National Preserve, Seward Peninsula.
Flooded thermokarst area with high escarpment, Bering Land Bridge National Preserve, Seward Peninsula.
Sea ice in the Chukchi Sea in 2013.
Sea ice in the Chukchi Sea in 2013.
Scientists preparing the CTD for deployment for habitat sampling
Scientists preparing the CTD for deployment for habitat sampling
Pacific walrus resting on ice in the Chukchi Sea, Alaska. This field work was part a satellite tagging expedition in the northwest Chukchi Sea to understand movement patterns, foraging behaviors of walruses and important summering habitats.
Pacific walrus resting on ice in the Chukchi Sea, Alaska. This field work was part a satellite tagging expedition in the northwest Chukchi Sea to understand movement patterns, foraging behaviors of walruses and important summering habitats.
An arctic fox on the tundra of the north slope of Alaska near a field camp of the Alaska Science Center.
An arctic fox on the tundra of the north slope of Alaska near a field camp of the Alaska Science Center.
A view of the inflatable boat rack on the back of the R/V Alaskan Gyre
A view of the inflatable boat rack on the back of the R/V Alaskan Gyre
Arctic fox depredates a nesting female white-fronted goose. Arctic Coastal Plain of Alaska, USA.
Arctic fox depredates a nesting female white-fronted goose. Arctic Coastal Plain of Alaska, USA.
Semipalmated Sandpiper on the Arctic Coastal Plain, Alaska.
Semipalmated Sandpiper on the Arctic Coastal Plain, Alaska.
A waterfall flowing into Exit Creek
A waterfall flowing into Exit Creek
Exit Creek in front of some mountains
Exit Creek in front of some mountains
Tundra Swan swimming on a lake in northern Alaska.
Tundra Swan swimming on a lake in northern Alaska.
Banded Greater White-fronted geese flying in northern Alaska.
Banded Greater White-fronted geese flying in northern Alaska.
This image also provides a clear view of the Juneau Icefield. Several glaciers flow from this icefield, and glaciologists are using the 42-year Landsat archive to monitor the advance and retreat of the glaciers over time.
This image also provides a clear view of the Juneau Icefield. Several glaciers flow from this icefield, and glaciologists are using the 42-year Landsat archive to monitor the advance and retreat of the glaciers over time.