Belle Philibosian next to a trench investigating the West Napa Fault near St. Helena, California, September 2017.
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Trench Across West Napa Fault, California
Belle Philibosian next to a trench investigating the West Napa Fault near St. Helena, California, September 2017.
Drowned Forest in Girdwood, AK from 1964 Alaska Earthquake and Tsunami
Shaking during the 1964 Alaska earthquake was felt as far away as Seattle, Washington, and its tsunamis caused 129 fatalities and about $2.3 billion in property losses (2013 dollars).
Shaking during the 1964 Alaska earthquake was felt as far away as Seattle, Washington, and its tsunamis caused 129 fatalities and about $2.3 billion in property losses (2013 dollars).
Fairweather Fault
USGS research geologist Kate Scharer with her finger on the Fairweather Fault in southeast Alaska. The magnitude 7.8 Lituya Bay earthquake caused shaking that toppled trees along the fault, which left a break in the forest shown here.
USGS research geologist Kate Scharer with her finger on the Fairweather Fault in southeast Alaska. The magnitude 7.8 Lituya Bay earthquake caused shaking that toppled trees along the fault, which left a break in the forest shown here.
South Crillon Glacier
Periodic calving of ice from the snout of South Crillon Glacier.
Periodic calving of ice from the snout of South Crillon Glacier.
Glacier Bay National Park
Trench site along the southern Fairweather Fault, in Glacier Bay National Park, Alaska. The alluvial fan at left consists of lake, stream channel and debris flow deposits impounded by the Fairweather Fault scarp, at right.
Trench site along the southern Fairweather Fault, in Glacier Bay National Park, Alaska. The alluvial fan at left consists of lake, stream channel and debris flow deposits impounded by the Fairweather Fault scarp, at right.
Alaska field team
The field team included USGS geologists Rob Witter, Adrian Bender, Chris DuRoss, Peter Haeussler, Richard Lease and Kate Scharer
The field team included USGS geologists Rob Witter, Adrian Bender, Chris DuRoss, Peter Haeussler, Richard Lease and Kate Scharer
South Crillon Glacier
Nearly 60 years after a magnitude 7.7 earthquake struck Lituya Bay, Alaska — leading to a tsunami that devastated the area — six U.S. Geological Survey geologists revisited the isolated region of Alaska, to pick up where their scientific predecessors left off.
Nearly 60 years after a magnitude 7.7 earthquake struck Lituya Bay, Alaska — leading to a tsunami that devastated the area — six U.S. Geological Survey geologists revisited the isolated region of Alaska, to pick up where their scientific predecessors left off.
Glacier Bay National Park
View of Glacier Bay National Park from the air.
View of Glacier Bay National Park from the air.
Damaged Monument Kathmandu, Nepal
Major damage was more likely to monuments in Kathmandu, Nepal than more modern structures
Major damage was more likely to monuments in Kathmandu, Nepal than more modern structures
Standing Masonry Buildings in Kathmandu, Nepal
Standing masonry buildings in Kathmandu suggest that shaking was not amplified in the valley sediments surrounding Kathmandu
Standing masonry buildings in Kathmandu suggest that shaking was not amplified in the valley sediments surrounding Kathmandu
Rock Slide in Nepal from an Earthquake in April of 2015
Villagers in Kerauja below a rock slide that resulted from a magnitude 7.8 earthquake on April 25, 2015 in Gorkha district, Nepal.
Villagers in Kerauja below a rock slide that resulted from a magnitude 7.8 earthquake on April 25, 2015 in Gorkha district, Nepal.
USGS Geologists Inspecting Fault Trace in a Trench
View of geologists pointing to fault in a trench dug across one of the ruptures from the 2014 South Napa earthquake. From front to rear: Alexandra Pickering, Suzanne Hecker, Aaron Page (all USGS). Trench located approximately 3 miles NW of downtown Napa, CA.
View of geologists pointing to fault in a trench dug across one of the ruptures from the 2014 South Napa earthquake. From front to rear: Alexandra Pickering, Suzanne Hecker, Aaron Page (all USGS). Trench located approximately 3 miles NW of downtown Napa, CA.
San Jose Earthquakes' Avaya Stadium
San Jose Earthquakes' Avaya Stadium.
San Jose Earthquakes' Avaya Stadium.
Brain coral boulder brought ashore by large waves
A brain coral boulder eight feet in diameter stands 750 feet inland in the British Virgin Islands. Geologists say that the coral was brought ashore, probably alive, by an unusual tsunami or storm between the years 1200 and 1480.
A brain coral boulder eight feet in diameter stands 750 feet inland in the British Virgin Islands. Geologists say that the coral was brought ashore, probably alive, by an unusual tsunami or storm between the years 1200 and 1480.
Rock Riffle and Water Flow in Sonoma Creek
Increased flow over rock riffle in Sonoma Creek seen after South Napa Earthquake of August 24, 2014.
Location: Sonoma Creek downstream of the Agua Caliente Road Bridge, Sonoma County, California.
Increased flow over rock riffle in Sonoma Creek seen after South Napa Earthquake of August 24, 2014.
Location: Sonoma Creek downstream of the Agua Caliente Road Bridge, Sonoma County, California.
Damage to the downtown Napa Post Office
Damage to the brick exterior of the downtown Napa Post Office. Photo take September 11, 2014
Damage to the brick exterior of the downtown Napa Post Office. Photo take September 11, 2014
Collecting topographic data
USGS summer geology interns Alexandra Pickering and Nikita Avdievitch collecting topographic data with a three-dimensional laser scanner on August 26. Surface rupture from the 2014 South Napa Earthquake is visible in the foreground
USGS summer geology interns Alexandra Pickering and Nikita Avdievitch collecting topographic data with a three-dimensional laser scanner on August 26. Surface rupture from the 2014 South Napa Earthquake is visible in the foreground
Surface rupture across Los Carneros Ave
Surface rupture across Los Carneros Ave just northwest of South Ave in Napa County, CA. Photo taken by USGS from California Highway Patrol helicopter on August 24, 2014
Surface rupture across Los Carneros Ave just northwest of South Ave in Napa County, CA. Photo taken by USGS from California Highway Patrol helicopter on August 24, 2014
Surface rupture across State Highway 12
Surface rupture across State Highway 12 at Cuttings Wharf Road - Photo taken by USGS from California Highway Patrol helicopter on August 24, 2014
Surface rupture across State Highway 12 at Cuttings Wharf Road - Photo taken by USGS from California Highway Patrol helicopter on August 24, 2014
Surface rupture
Surface rupture in soil near the intersection of state Highway 12 and Cuttings Wharf Road in Napa, CA on August 24, 2104
Surface rupture in soil near the intersection of state Highway 12 and Cuttings Wharf Road in Napa, CA on August 24, 2104
Damage to a building in downtown Napa, CA
Damage to a building in downtown Napa, CA caused by the South Napa earthquake. Photo taken by USGS from California Highway Patrol helicopter on August 24, 2014
Damage to a building in downtown Napa, CA caused by the South Napa earthquake. Photo taken by USGS from California Highway Patrol helicopter on August 24, 2014