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Images related to natural hazards.
Mount St. Helens in December 2004, a few months after the start of the volcano's most recent eruption, as seen from the Johnston Ridge Observatory in Mount St. Helens National Volcanic Monument in Washington. Inset: The USGS Cascades Volcano Observatory in Vancouver, WA, monitors volcanoes in Washington, Oregon, and Idaho. USGS photos.
Mount St. Helens in December 2004, a few months after the start of the volcano's most recent eruption, as seen from the Johnston Ridge Observatory in Mount St. Helens National Volcanic Monument in Washington. Inset: The USGS Cascades Volcano Observatory in Vancouver, WA, monitors volcanoes in Washington, Oregon, and Idaho. USGS photos.
A telephoto lens captured the cascade of lava streaming from the lava tube. Hot lava mixing with cool seawater produces an explosive interaction that results in fragmented lava—spatter, Pele's hair, and black sand—flying upward, landing on the sea cliff above the ocean entry and being thrown seaward.
A telephoto lens captured the cascade of lava streaming from the lava tube. Hot lava mixing with cool seawater produces an explosive interaction that results in fragmented lava—spatter, Pele's hair, and black sand—flying upward, landing on the sea cliff above the ocean entry and being thrown seaward.
This map updates the preliminary ocean entry map below, based on mapping conducted on January 3, 2017. The map of the coastline at the lava flow ocean entry at Kamokuna shows the areas of the lava delta and adjacent coastline that collapsed into the ocean on December 31, 2016.
This map updates the preliminary ocean entry map below, based on mapping conducted on January 3, 2017. The map of the coastline at the lava flow ocean entry at Kamokuna shows the areas of the lava delta and adjacent coastline that collapsed into the ocean on December 31, 2016.
This map shows the coastline at the Kamokuna lava entry on Kīlauea Volcano, with labels denoting areas impacted by the large, progressive lava-delta collapse on December 31, 2016. Nearly all the Kamokuna lava delta collapsed into the sea, along with a large section of the older sea cliff east of the delta.
This map shows the coastline at the Kamokuna lava entry on Kīlauea Volcano, with labels denoting areas impacted by the large, progressive lava-delta collapse on December 31, 2016. Nearly all the Kamokuna lava delta collapsed into the sea, along with a large section of the older sea cliff east of the delta.
The rocky shelf at the base of the sea cliff is all that remains of the Kamokuna lava delta following the New Year's Eve collapse (Dec. 31, 2016), which sent acres of rock plunging into the sea.
The rocky shelf at the base of the sea cliff is all that remains of the Kamokuna lava delta following the New Year's Eve collapse (Dec. 31, 2016), which sent acres of rock plunging into the sea.
In addition to most of the Kamokuna lava delta disappearing into the ocean on New Year's Eve day, a large section of the older sea cliff east of the delta also collapsed. Here you can see the "bite" taken out by the collapse of the sea cliff.
In addition to most of the Kamokuna lava delta disappearing into the ocean on New Year's Eve day, a large section of the older sea cliff east of the delta also collapsed. Here you can see the "bite" taken out by the collapse of the sea cliff.
A sonar-equipped personal watercraft mapping the bathymetry underwater near Santa Cruz, Calif.
A sonar-equipped personal watercraft mapping the bathymetry underwater near Santa Cruz, Calif.
USGS scientists readying a sonar-equipped boat to map the ocean bottom near Santa Cruz, Calif.
USGS scientists readying a sonar-equipped boat to map the ocean bottom near Santa Cruz, Calif.
USGS scientist Daniel Hoover mapping the beach at Santa Cruz with a GPS-equipped backpack unit.
USGS scientist Daniel Hoover mapping the beach at Santa Cruz with a GPS-equipped backpack unit.
USGS scientists setting up a lidar scanner on the pier to map the beach near Capitola, California.
USGS scientists setting up a lidar scanner on the pier to map the beach near Capitola, California.
Continued degassing from fumaroles at fissures on Kīlauea Volcano's lower East Rift Zone produce native sulfur crystals when sulfur dioxide and hydrogen sulfide gases react and cool upon reaching the surface. The delicate sulfur crystals are 5–15 mm (0.2–0.6 in) long. USGS photos by A. Lerner, 2018.
Continued degassing from fumaroles at fissures on Kīlauea Volcano's lower East Rift Zone produce native sulfur crystals when sulfur dioxide and hydrogen sulfide gases react and cool upon reaching the surface. The delicate sulfur crystals are 5–15 mm (0.2–0.6 in) long. USGS photos by A. Lerner, 2018.
White laze plumes mark locations where lava enters the ocean over a broad area. An open lava channel flows into the ocean at the southern-most plume (middle) near the southern flow margin. The boat ramp at Pohoiki is about 940 m (0.58 mi) farther south of the flow margin. View is toward the west-southwest.
White laze plumes mark locations where lava enters the ocean over a broad area. An open lava channel flows into the ocean at the southern-most plume (middle) near the southern flow margin. The boat ramp at Pohoiki is about 940 m (0.58 mi) farther south of the flow margin. View is toward the west-southwest.
Mount Crillon in the backdrop during a multibeam bathymetry survey of the Queen Charlotte-Fairweather Fault, offshore southeastern Alaska.
Mount Crillon in the backdrop during a multibeam bathymetry survey of the Queen Charlotte-Fairweather Fault, offshore southeastern Alaska.
GeoGirls hike onto the Pumice Plain to learn more about Mount St. Helens’ historical
eruptions.
GeoGirls hike onto the Pumice Plain to learn more about Mount St. Helens’ historical
eruptions.
Woods Hole Core Lab Manager, Brian Buczkowski, giving a tour of the lab to local teachers participating in a professional development workshop
Woods Hole Core Lab Manager, Brian Buczkowski, giving a tour of the lab to local teachers participating in a professional development workshop
High-resolution digital elevation dataset for Newberry Volcano and vicinity, Oregon, based on lidar survey of August-September, 2010 and bathymetric survey of June, 2001.
High-resolution digital elevation dataset for Newberry Volcano and vicinity, Oregon, based on lidar survey of August-September, 2010 and bathymetric survey of June, 2001.
At Fire Island, estuarine, wetland, coastal, and oceanic processes interact, affecting natural and human communities. The CMHRP has been conducting scientific investigations at Fire Island in order to protect coastal infrastructure.
At Fire Island, estuarine, wetland, coastal, and oceanic processes interact, affecting natural and human communities. The CMHRP has been conducting scientific investigations at Fire Island in order to protect coastal infrastructure.
Products of Structure-from-Motion applied to data collected by UAS in Black Beach, Falmouth, MA
Products of Structure-from-Motion applied to data collected by UAS in Black Beach, Falmouth, MA
Map showing the surficial geology of Vineyard and western Nantucket Sounds with equivalent onshore geology (adapted from Stone and DiGiacomo-Cohen, 2009). The areal extents over which offshore subsurface geologic units crop out at the sea floor were interpreted from seismic-reflection data.
Map showing the surficial geology of Vineyard and western Nantucket Sounds with equivalent onshore geology (adapted from Stone and DiGiacomo-Cohen, 2009). The areal extents over which offshore subsurface geologic units crop out at the sea floor were interpreted from seismic-reflection data.
Jen Suttles,Woods Hole Coastal and Marine Science Center, collects water samples from a salt marsh tidal creek (East Falmouth, MA) for laboratory analysis of total organic carbon. These samples will be compared to data recorded by instrumentation deployed in an adjacent tidal creek as part of research efforts to quantify carbon dynamics in coastal ecosystems
Jen Suttles,Woods Hole Coastal and Marine Science Center, collects water samples from a salt marsh tidal creek (East Falmouth, MA) for laboratory analysis of total organic carbon. These samples will be compared to data recorded by instrumentation deployed in an adjacent tidal creek as part of research efforts to quantify carbon dynamics in coastal ecosystems
Map of seabed geology and sun-illuminated topography, Stellwagen Bank Blue and purple = boulder ridges. Redlines = leading edges of sand sheets
Map of seabed geology and sun-illuminated topography, Stellwagen Bank Blue and purple = boulder ridges. Redlines = leading edges of sand sheets