The large white radar dome is a former Distant Early Warning Line site, which sits atop a permafrost bluff on Barter Island, Alaska.
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Radar dome sits atop a permafrost bluff on Barter Island, Alaska
The large white radar dome is a former Distant Early Warning Line site, which sits atop a permafrost bluff on Barter Island, Alaska.
Li Erikson in Alaska
USGS scientist Li Erikson poses for a picture in Alaska. Learn more about Li's research about climate impacts to Arctic coasts: https://www.usgs.gov/centers/pcmsc/science/climate-impacts-arctic-coasts.
USGS scientist Li Erikson poses for a picture in Alaska. Learn more about Li's research about climate impacts to Arctic coasts: https://www.usgs.gov/centers/pcmsc/science/climate-impacts-arctic-coasts.
Waves resuspend terrestrial flood sediment on coral reefs
Large waves (6 meters /20 feet high) resuspend terrestrial flood sediment on the coral reefs off Puʻukoholā Heiau National Historic Site and Kawaihae Harbor, Hawaiʻi.
Large waves (6 meters /20 feet high) resuspend terrestrial flood sediment on the coral reefs off Puʻukoholā Heiau National Historic Site and Kawaihae Harbor, Hawaiʻi.
Tsunami damage in Natori, Japan
USGS scientists Bruce Jaffe and Bruce Richmond visited Japan following the March 11, 2011 earthquake and tsunami. They collected time-sensitive data to help determine the height of tsunami waves at various sites and the distances the waves traveled inland.
USGS scientists Bruce Jaffe and Bruce Richmond visited Japan following the March 11, 2011 earthquake and tsunami. They collected time-sensitive data to help determine the height of tsunami waves at various sites and the distances the waves traveled inland.
Seismic reflection equipment off stern of R/V Langseth
Four tan cables, each 6 kilometers long, trail behind R/V Marcus G. Langseth. These cables record seismic sound waves that travel down into the Earth and reflect back from layers beneath the seafloor. The green cables provide the sound.
Four tan cables, each 6 kilometers long, trail behind R/V Marcus G. Langseth. These cables record seismic sound waves that travel down into the Earth and reflect back from layers beneath the seafloor. The green cables provide the sound.
Wreckage after the Japan earthquake and tsunami in 2011
Damage as seen in Natori, Japan, in May 2011. The March 11, 2011 magnitude 9.1 earthquake off the east coast of Japan caused an epic tsunami. USGS scientist standing near the wrecked boat, and a car on the road, provide scale. Damage to the building indicates a 10-meter flow depth.
Damage as seen in Natori, Japan, in May 2011. The March 11, 2011 magnitude 9.1 earthquake off the east coast of Japan caused an epic tsunami. USGS scientist standing near the wrecked boat, and a car on the road, provide scale. Damage to the building indicates a 10-meter flow depth.
Lamont-Doherty Research Vessel Marcus G. Langseth
Research vessel (R/V) Marcus G. Langseth, operated by Lamont-Doherty Earth Observatory's Office of Marine Operations, can deploy several kilometers of cable to collect seismic data from beneath the seafloor.
Research vessel (R/V) Marcus G. Langseth, operated by Lamont-Doherty Earth Observatory's Office of Marine Operations, can deploy several kilometers of cable to collect seismic data from beneath the seafloor.
Japan tsunami of 2011 hits Santa Cruz yacht harbor
A sailboat gets stuck under the Murray Street bridge over Santa Cruz Harbor in California, after it was washed free of its dock due to the strength of the tsunami wave from Japan. While the tsunami energy that hit the coast of California was relatively low, the wave energy is concentrated in narrow spaces like harbors.
A sailboat gets stuck under the Murray Street bridge over Santa Cruz Harbor in California, after it was washed free of its dock due to the strength of the tsunami wave from Japan. While the tsunami energy that hit the coast of California was relatively low, the wave energy is concentrated in narrow spaces like harbors.
Crescent City Harbor
The March 11, 2011, Tohoku tsunami caused significant damage to ships and docks in Crescent City Harbor in California. A number of ships were sunk within the harbor. Because of extensive sedimentation and potential contaminated debris within the harbor, recovery efforts took more than a year to complete.
The March 11, 2011, Tohoku tsunami caused significant damage to ships and docks in Crescent City Harbor in California. A number of ships were sunk within the harbor. Because of extensive sedimentation and potential contaminated debris within the harbor, recovery efforts took more than a year to complete.
King Tide in San Francisco
Unusually high tides, sometimes called "king tides," offer a preview of coastal flooding likely to result from rising sea level. In this photograph, taken during a king tide on February 17, 2011, waves overtop Pier 14 in San Francisco, California.
Unusually high tides, sometimes called "king tides," offer a preview of coastal flooding likely to result from rising sea level. In this photograph, taken during a king tide on February 17, 2011, waves overtop Pier 14 in San Francisco, California.
Rotary sediment trap
A rotary sediment trap deployed in a channel on the reef flat off Puʻukoholā Heiau National Historic Site, Hawaiʻi, designed to collect samples of sediment being transported across the reef.
A rotary sediment trap deployed in a channel on the reef flat off Puʻukoholā Heiau National Historic Site, Hawaiʻi, designed to collect samples of sediment being transported across the reef.
Deployment of acoustic doppler current profiler
Jenny White (USGS PCMSC) and Lissa MacVean (USGS PCMSC) deploy an instrumented frame in the shallows of San Pablo Bay (northern San Francisco Bay) from R/V Retriever. The instrument is an ADCP (Acoustic Doppler Current Profiler).
Jenny White (USGS PCMSC) and Lissa MacVean (USGS PCMSC) deploy an instrumented frame in the shallows of San Pablo Bay (northern San Francisco Bay) from R/V Retriever. The instrument is an ADCP (Acoustic Doppler Current Profiler).
Terms to describe the measurement of tsunamis
Bathymetry—the measurement of water depth of a body of water (e.g., ocean, sea, river, bay, lake, etc.)
Bathymetry—the measurement of water depth of a body of water (e.g., ocean, sea, river, bay, lake, etc.)
Mission Bay San Diego flooding scenario
Estimated coastal inundation (blue shading) at Mission Bay in San Diego, California, using the Coastal Storm Modeling System (CoSMoS) developed for ARkStorm. (From USGS Open-File Report 2010-1312.)
Estimated coastal inundation (blue shading) at Mission Bay in San Diego, California, using the Coastal Storm Modeling System (CoSMoS) developed for ARkStorm. (From USGS Open-File Report 2010-1312.)
ARkStorm scenario
The ARkStorm scenario led by the USGS and hundreds of scientists and experts from many disciplines details impacts of a scientifically plausible storm similar to the Great California Storm of 1862 in the modern day.
The ARkStorm scenario led by the USGS and hundreds of scientists and experts from many disciplines details impacts of a scientifically plausible storm similar to the Great California Storm of 1862 in the modern day.
Shaded relief image of Northern Cape Cod Bay, MA
Shaded relief image of Northern Cape Cod Bay, MA
Shaded relief image of Northern Cape Cod Bay, MA
Location of earthquakes in the northeast Caribbean
Location of earthquakes as a function of depth and size in the northeastern Caribbean.
Location of earthquakes as a function of depth and size in the northeastern Caribbean.
Topographic and bathymetric map of the island of Hispaniola.
Map of the island of Hispaniola that include the countries of Haiti and the Dominican Republic. Fault traces are shown as lines with the following descriptions: barbed=thrust fault; solid=strike-slip fault with arrows showing relative direction of motion; black and white=normal fault.
Map of the island of Hispaniola that include the countries of Haiti and the Dominican Republic. Fault traces are shown as lines with the following descriptions: barbed=thrust fault; solid=strike-slip fault with arrows showing relative direction of motion; black and white=normal fault.
Topography and bathymetry map of the Northeastern Caribbean.
Map of the Northeastern Caribbean: topography is in shades of green and bathymetry in shades of blue. Fault traces are shown as lines with the following descriptions: barbed=thrust fault; solid=strike-slip fault with arrows showing relative direction of motion; black and white=normal fault. Faults outlined in red have a potential to generate a large earthquake.
Map of the Northeastern Caribbean: topography is in shades of green and bathymetry in shades of blue. Fault traces are shown as lines with the following descriptions: barbed=thrust fault; solid=strike-slip fault with arrows showing relative direction of motion; black and white=normal fault. Faults outlined in red have a potential to generate a large earthquake.
Comparison of observed near-bed velocities and modeled near-bed veloci
Comparison of observed near-bed velocities and modeled near-bed velocities using several bottom-roughness formulations. Velocity vectors are overlaid on map of backscatter from the sea floor showing regions with coarse sand (light color) and fine sand (dark colors). White lines are bathymetry contours.
Comparison of observed near-bed velocities and modeled near-bed velocities using several bottom-roughness formulations. Velocity vectors are overlaid on map of backscatter from the sea floor showing regions with coarse sand (light color) and fine sand (dark colors). White lines are bathymetry contours.
Methane seeping
Methane seeping on the Virginia margin just shallower than the limit for gas hydrate stability.
Methane seeping on the Virginia margin just shallower than the limit for gas hydrate stability.