A YSI Sontek M9 acoustic doppler current profiler (ADCP) measures the flow along the Sevenmile Canal. The Sevenmile Canal is a tributary to Upper Klamath Lake.
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An ADCP measures the Sevenmile Canal
A YSI Sontek M9 acoustic doppler current profiler (ADCP) measures the flow along the Sevenmile Canal. The Sevenmile Canal is a tributary to Upper Klamath Lake.
Barred owl movement west
Barred owls spread west during the 1900s and today completely overlap the range of the northern spotted owl.
Barred owls spread west during the 1900s and today completely overlap the range of the northern spotted owl.
Automated radio telemetry base station
A major advancement in the use of radio telemetry has been the development of automated radio tracking systems (ARTS) which allow animal movements to be tracked continuously. A new ARTS approach is the use of a network of simple radio receivers (nodes) that collect radio signal strength (RSS) values from animal-borne radio transmitters.
A major advancement in the use of radio telemetry has been the development of automated radio tracking systems (ARTS) which allow animal movements to be tracked continuously. A new ARTS approach is the use of a network of simple radio receivers (nodes) that collect radio signal strength (RSS) values from animal-borne radio transmitters.
Adult Lahontan cutthroat trout
Lahontan cutthroat trout (Oncorhynchus clarkii henshawi) is a federally listed threatened species. Ninety-seven percent of their range are small headwater streams in the Great Basin of North America.
Lahontan cutthroat trout (Oncorhynchus clarkii henshawi) is a federally listed threatened species. Ninety-seven percent of their range are small headwater streams in the Great Basin of North America.
Dragonfly Mercury Project specimen collection in Glacier NP
Researchers instruct volunteers on how to collect dragonfly larvae in Glacier NP as a part of the Dragonfly Mercury Project.
Researchers instruct volunteers on how to collect dragonfly larvae in Glacier NP as a part of the Dragonfly Mercury Project.
A geologists makes observations at Kilauea
Clear weather allowed HVO geologists to make observations and take measurements of the water pond at Kīlauea's summit. No major changes were observed, and the water level continues to slowly rise. Note the former HVO observation tower can be seen above the geologist's helmet.
Clear weather allowed HVO geologists to make observations and take measurements of the water pond at Kīlauea's summit. No major changes were observed, and the water level continues to slowly rise. Note the former HVO observation tower can be seen above the geologist's helmet.
Unoccupied Aircraft System with water sampler
The sampling mechanism (on blue tarp) is prepared and the Unoccupied Aircraft System (UAS) is inspected just before take off to collect water from the Halema‘uma‘u crater lake. Brightly colored flagging tape tied to a cable attached to the UAS indicated depth as the sampling tool was lowered into the water.
The sampling mechanism (on blue tarp) is prepared and the Unoccupied Aircraft System (UAS) is inspected just before take off to collect water from the Halema‘uma‘u crater lake. Brightly colored flagging tape tied to a cable attached to the UAS indicated depth as the sampling tool was lowered into the water.
A close-up view of the Kilauea pond
A close-up view of the Kilauea pond shows the color variations across the surface, and sharp boundaries among zones of different color.
A close-up view of the Kilauea pond shows the color variations across the surface, and sharp boundaries among zones of different color.
Scientists process volcano lake water samples
After a sample was collected, HVO team members transferred water from the sampling device to plastic bottles. Team members took notes, measured water pH and evaluated water temperature data for each sample collected.
After a sample was collected, HVO team members transferred water from the sampling device to plastic bottles. Team members took notes, measured water pH and evaluated water temperature data for each sample collected.
RiverPro in the Snow near Klamath River at Keno, OR
A RiverPro acoustic doppler current profiler (ADCP) is propped in the snow near the Klamath River in Keno, Oregon. The ADCP is used to measure streamflow.
A RiverPro acoustic doppler current profiler (ADCP) is propped in the snow near the Klamath River in Keno, Oregon. The ADCP is used to measure streamflow.
Water collected from the lake at the bottom of Halema‘uma‘u
Water collected from the lake at the bottom of Halema‘uma‘u is prepared for laboratory analyses at the USGS California Volcano Observatory. Results thus far reveal chemistry indicative of complex reactions among the water, magmatic gases and Kīlauea's basaltic rocks.
Water collected from the lake at the bottom of Halema‘uma‘u is prepared for laboratory analyses at the USGS California Volcano Observatory. Results thus far reveal chemistry indicative of complex reactions among the water, magmatic gases and Kīlauea's basaltic rocks.
Unoccupied Aircraft System is inspected by pilot just before take off
The sampling mechanism (on blue tarp) is prepared and the Unoccupied Aircraft System (UAS) is inspected just before take off to collect water from the Halema‘uma‘u crater lake. Brightly colored flagging tape tied to a cable attached to the UAS indicated depth as the sampling tool was lowered into the water.
The sampling mechanism (on blue tarp) is prepared and the Unoccupied Aircraft System (UAS) is inspected just before take off to collect water from the Halema‘uma‘u crater lake. Brightly colored flagging tape tied to a cable attached to the UAS indicated depth as the sampling tool was lowered into the water.
Unoccupied Aircraft System returning with a water sample.
USGS-HVO scientists and DOI UAS team members collect samples of water from the Halema‘uma‘u crater lake.
USGS-HVO scientists and DOI UAS team members collect samples of water from the Halema‘uma‘u crater lake.
Looking downstream onto Hells Canyon Reservoir
The Snake River is the largest tributary of the Columbia River. It drains over 108,000 square miles in mainly Idaho and portions of Montana, Nevada, Oregon, Washington, and Wyoming. The climate of much of the Snake River watershed is arid or semi-arid and spring snowmelt contributes substantially to the river’s flow.
The Snake River is the largest tributary of the Columbia River. It drains over 108,000 square miles in mainly Idaho and portions of Montana, Nevada, Oregon, Washington, and Wyoming. The climate of much of the Snake River watershed is arid or semi-arid and spring snowmelt contributes substantially to the river’s flow.
New submarine eruption in Northern Mariana Islands
Bathymetric the islands and seamounts that make up the Mariana volcanic island arc (left) and the area of Ahyi seamount in the northern part of the arc (right). Susan Merle of NOAA's Earth-Ocean Interaction Program created these maps.
Bathymetric the islands and seamounts that make up the Mariana volcanic island arc (left) and the area of Ahyi seamount in the northern part of the arc (right). Susan Merle of NOAA's Earth-Ocean Interaction Program created these maps.
Guam Geomagnetic Observatory
Guam geomagnetic observatory.
Guam geomagnetic observatory.
A brown treesnake on frangipangi blossoms
A brown treesnake crawls on some frangipangi blossoms in Guam.
A brown treesnake crawls on some frangipangi blossoms in Guam.
A brown treesnake in a tree in Guam.
A brown treesnake in a tree in Guam. Photo by Bob Reed, USGS, 2009.
A brown treesnake in a tree in Guam. Photo by Bob Reed, USGS, 2009.
A brown treesnake in a tree in Guam.
This is an image of a brown treesnake in a tree in Guam, taken in 2009.
This is an image of a brown treesnake in a tree in Guam, taken in 2009.
Fish and coral in Tumon Bay Marine Reserve, Guam
Underwater photograph of Tumon Bay Marine Reserve, Guam, showing some of the amazing biologic diversity of coral reefs.
Underwater photograph of Tumon Bay Marine Reserve, Guam, showing some of the amazing biologic diversity of coral reefs.