Northern Fulmars, Black-legged Kittiwakes, and Common Murres have all been tested for and contained harmful algal bloom (HAB) toxins. Since 2015, the USGS has worked with a variety of stakeholders to develop testing methods and research projects to better understand the geographic extent, timing and impacts of algal toxins in Alaska marine ecosystems.
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Northern Fulmars, Black-legged Kittiwakes, and Common Murres have all been tested for and contained harmful algal bloom (HAB) toxins. Since 2015, the USGS has worked with a variety of stakeholders to develop testing methods and research projects to better understand the geographic extent, timing and impacts of algal toxins in Alaska marine ecosystems.
A Northern Fulmar on the water offshore of Anchor Point, Cook Inlet on July 18, 2018.
A Northern Fulmar on the water offshore of Anchor Point, Cook Inlet on July 18, 2018.
Northern Fulmars, Black-legged Kittiwakes, and Common Murres have all been tested for and contained harmful algal bloom (HAB) toxins. Since 2015, the USGS has worked with a variety of stakeholders to develop testing methods and research projects to better understand the geographic extent, timing and impacts of algal toxins in Alaska marine ecosystems.
Northern Fulmars, Black-legged Kittiwakes, and Common Murres have all been tested for and contained harmful algal bloom (HAB) toxins. Since 2015, the USGS has worked with a variety of stakeholders to develop testing methods and research projects to better understand the geographic extent, timing and impacts of algal toxins in Alaska marine ecosystems.
Landsat sensor technology has come a long way since the days of the Return Beam Vidicon cameras on the first three Landsat satellites. Known as the RBV, it was originally intended to be the satellites’ primary sensor.
Landsat sensor technology has come a long way since the days of the Return Beam Vidicon cameras on the first three Landsat satellites. Known as the RBV, it was originally intended to be the satellites’ primary sensor.
USGS oceanographer Shawn Harrison poses in front of the USGS video camera installation atop the coastal bluff of Barter Island in northern Alaska.
USGS oceanographer Shawn Harrison poses in front of the USGS video camera installation atop the coastal bluff of Barter Island in northern Alaska.
USGS oceanographer Li Erikson speaks at a community outreach event on Barter Island, Alaska, to present results from earlier USGS studies and to discuss ongoing USGS research.
USGS oceanographer Li Erikson speaks at a community outreach event on Barter Island, Alaska, to present results from earlier USGS studies and to discuss ongoing USGS research.
USGS ecologists map and monitor vegetation and landscape characteristics at long-term ecological monitoring sites on the Yukon-Kuskokwim Delta, AK
USGS ecologists map and monitor vegetation and landscape characteristics at long-term ecological monitoring sites on the Yukon-Kuskokwim Delta, AK
For a short study period, two video cameras overlooked the coast from atop the coastal bluff of Barter Island in northern Alaska. The purpose was to observe and quantify coastal processes such as wave run-up, development of rip channels, bluff erosion, and movement of sandbars and ice floes.
For a short study period, two video cameras overlooked the coast from atop the coastal bluff of Barter Island in northern Alaska. The purpose was to observe and quantify coastal processes such as wave run-up, development of rip channels, bluff erosion, and movement of sandbars and ice floes.
USGS scientist Cordell Johnson points to the Raspberry Shake, a sensitive instrument used to detect ground shaking. Johnson mounted the Raspberry Shake to an aluminum pole which he will then drive into the ground to bury the instrument beneath the tundra. This process will help isolate it from the wind.
USGS scientist Cordell Johnson points to the Raspberry Shake, a sensitive instrument used to detect ground shaking. Johnson mounted the Raspberry Shake to an aluminum pole which he will then drive into the ground to bury the instrument beneath the tundra. This process will help isolate it from the wind.
This device, called a Raspberry Shake, is a sensitive instrument used to detect ground shaking. It is being carefully buried in this shallow hole in the tundra, to isolate it from wind.
This device, called a Raspberry Shake, is a sensitive instrument used to detect ground shaking. It is being carefully buried in this shallow hole in the tundra, to isolate it from wind.
Photograph of the actively eroding coastal permafrost bluff on Barter Island, located on the northern coast of Alaska.
Photograph of the actively eroding coastal permafrost bluff on Barter Island, located on the northern coast of Alaska.
View looking east of the actively eroding coastal permafrost bluff on Barter Island, which is located on the northern coast of Alaska.
View looking east of the actively eroding coastal permafrost bluff on Barter Island, which is located on the northern coast of Alaska.
Scientists Cordell Johnson, left, and Li Erikson stand atop the coastal bluff of Barter Island in northern Alaska, a coastal area that is experiencing very high rates of erosion.
Scientists Cordell Johnson, left, and Li Erikson stand atop the coastal bluff of Barter Island in northern Alaska, a coastal area that is experiencing very high rates of erosion.
An oblique perspective of Alaska's Denali Mountain visualized by 3D Elevation Program lidar data.
An oblique perspective of Alaska's Denali Mountain visualized by 3D Elevation Program lidar data.
Christina Ahlstrom holding a gull tagging with a satellite transmitter.
Christina Ahlstrom holding a gull tagging with a satellite transmitter.
Black-legged Kittiwakes forage on Pacific sand lance and capelin near their colony on Gull Island, Cook Inlet on June 28, 2018.
Black-legged Kittiwakes forage on Pacific sand lance and capelin near their colony on Gull Island, Cook Inlet on June 28, 2018.
Female McKay's Bunting on St. Matthew Island.
Female McKay's Bunting on St. Matthew Island.
Male McKay's Bunting on St. Matthew Island
Male McKay's Bunting on St. Matthew Island
Ocean bottom seismometers being loaded onto the R/V Sikuliaq to be deployed on the sea floor in the Gulf of Alaska.
Ocean bottom seismometers being loaded onto the R/V Sikuliaq to be deployed on the sea floor in the Gulf of Alaska.
Stratigraphic contact marking uplift of Montague Island, caused by slip on the Patton Bay fault system during the 1964 M9.2 Great ALaska Earthquake.
Stratigraphic contact marking uplift of Montague Island, caused by slip on the Patton Bay fault system during the 1964 M9.2 Great ALaska Earthquake.
Hot springs can occur in many parts of the world. The water is hot not due to climate, but rather due to geothermal activity underground, such as volcanic activity or active hydrothermal heating from hot material in the ground. Hot springs result from water heated by underground geothermal activity finding its way to the land surface.
Hot springs can occur in many parts of the world. The water is hot not due to climate, but rather due to geothermal activity underground, such as volcanic activity or active hydrothermal heating from hot material in the ground. Hot springs result from water heated by underground geothermal activity finding its way to the land surface.