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Images related to natural hazards.
Photo caption: USGS Hawaiian Volcano Observatory field engineers upgrade a tiltmeter on Kīlauea Volcano's East Rift Zone. The upgrade consisted of switching the old analog instrument to a newer digital model. This tiltmeter is used to track magma movement within the volcano. USGS photo by K. Kamibayashi.
Photo caption: USGS Hawaiian Volcano Observatory field engineers upgrade a tiltmeter on Kīlauea Volcano's East Rift Zone. The upgrade consisted of switching the old analog instrument to a newer digital model. This tiltmeter is used to track magma movement within the volcano. USGS photo by K. Kamibayashi.
Black arrows indicate the amount and direction of motion measured by GPS stations in HVO's monitoring network during the October 2015 slow slip event. Arrow lengths correspond to the amount of motion at each station (see scale at bottom of map); arrow points show the direction the stations moved.
Black arrows indicate the amount and direction of motion measured by GPS stations in HVO's monitoring network during the October 2015 slow slip event. Arrow lengths correspond to the amount of motion at each station (see scale at bottom of map); arrow points show the direction the stations moved.
The view from one of two video cameras atop the Dream Inn hotel in Santa Cruz, California, that overlook the coast in northern Monterey Bay. This view, from camera 1, looks eastward over Santa Cruz Main Beach and boardwalk.
The view from one of two video cameras atop the Dream Inn hotel in Santa Cruz, California, that overlook the coast in northern Monterey Bay. This view, from camera 1, looks eastward over Santa Cruz Main Beach and boardwalk.
(Left to right) Danny Brothers (USGS Pacific Coastal and Marine Science Center [PCMSC]), Peter Haeussler (USGS Alaska Science Center), Maureen Walton (PCMSC), and Jamie Conrad (PCMSC) select seafloor sediment samples from cores collected along the Queen Charlotte-Fairweather fault.
(Left to right) Danny Brothers (USGS Pacific Coastal and Marine Science Center [PCMSC]), Peter Haeussler (USGS Alaska Science Center), Maureen Walton (PCMSC), and Jamie Conrad (PCMSC) select seafloor sediment samples from cores collected along the Queen Charlotte-Fairweather fault.
Mauna Loa, Earth's largest active volcano, has erupted 33 times since 1843, producing the lava flows shown in black. All of these historic eruptions started at the summit of the volcano. From there, the eruptions either stayed in the summit area or migrated down the volcano's Northeast or Southwest Rift Zones.
Mauna Loa, Earth's largest active volcano, has erupted 33 times since 1843, producing the lava flows shown in black. All of these historic eruptions started at the summit of the volcano. From there, the eruptions either stayed in the summit area or migrated down the volcano's Northeast or Southwest Rift Zones.
Mauna Loa tends to erupt large, fast-moving lava flows. About 36 hours after the 1984 eruption began on March 25, lava flowed downstream (toward bottom-right of photo) through this ‘A‘ā channel down rift from the main vent. For scale, note the USGS scientists at work on the left side of the 70-m- (77-yard-) wide lava channel.
Mauna Loa tends to erupt large, fast-moving lava flows. About 36 hours after the 1984 eruption began on March 25, lava flowed downstream (toward bottom-right of photo) through this ‘A‘ā channel down rift from the main vent. For scale, note the USGS scientists at work on the left side of the 70-m- (77-yard-) wide lava channel.
A bursting bubble on the surface of a lava lake produces an impulsive signal on an infrasound recording. This photo shows a group of bubbles about 5 m (16 ft) across bursting on the Halema‘uma‘u lava lake at the summit of Kīlauea Volcano. The blue line is an infrasound recording of 50 seconds of similar activity.
A bursting bubble on the surface of a lava lake produces an impulsive signal on an infrasound recording. This photo shows a group of bubbles about 5 m (16 ft) across bursting on the Halema‘uma‘u lava lake at the summit of Kīlauea Volcano. The blue line is an infrasound recording of 50 seconds of similar activity.
Tim Collett, USGS research geologist, presenting at the Korean Institute of Geoscience and Mineral Resources' (KIGAM) international program for geoscience resources.
Tim Collett, USGS research geologist, presenting at the Korean Institute of Geoscience and Mineral Resources' (KIGAM) international program for geoscience resources.
International participants from Australia, New Zealand, Fiji, the Republic of the Marshall Islands, Hawaii, Spain, France, Belgium, the Netherlands, Germany, Israel, and the U.S. attended a workshop on “Understanding Flooding on Reef-lined Island Coastlines”, February 5-7, 2018.
International participants from Australia, New Zealand, Fiji, the Republic of the Marshall Islands, Hawaii, Spain, France, Belgium, the Netherlands, Germany, Israel, and the U.S. attended a workshop on “Understanding Flooding on Reef-lined Island Coastlines”, February 5-7, 2018.
Core storage facility at the the Korean Institute of Geoscience and Mineral Resources in Daejeon, South Korea
Core storage facility at the the Korean Institute of Geoscience and Mineral Resources in Daejeon, South Korea
Gas hydrate from offshore Korea courtesy of the Korean Institute of Geoscience and Mineral Resources. Learn more about gas hydrates at https://woodshole.er.usgs.gov/project-pages/hydrates/
Gas hydrate from offshore Korea courtesy of the Korean Institute of Geoscience and Mineral Resources. Learn more about gas hydrates at https://woodshole.er.usgs.gov/project-pages/hydrates/
Seth Haines, USGS research geophysicist, on a Korean Institute of Geoscience and Mineral Resources laboratory tour, which included stops at their gas hydrate and sediment pressure chamber - it's a whopping 320 gallons, dwarfing even Seth, a 6-footer. The chamber is the silvery ring and the black cylinder beneath it. It's so big and heavy
Seth Haines, USGS research geophysicist, on a Korean Institute of Geoscience and Mineral Resources laboratory tour, which included stops at their gas hydrate and sediment pressure chamber - it's a whopping 320 gallons, dwarfing even Seth, a 6-footer. The chamber is the silvery ring and the black cylinder beneath it. It's so big and heavy
Tim Collett, research geologist in gas hydrates, is chief for the U.S. Geological Survey (USGS) Energy Resources Program gas hydrate research efforts offering a presentation on unconventional oil and gas resources at KIGAM, the Korean Institute of Geoscience and Mineral Resources in Daejeon, South Korea
Tim Collett, research geologist in gas hydrates, is chief for the U.S. Geological Survey (USGS) Energy Resources Program gas hydrate research efforts offering a presentation on unconventional oil and gas resources at KIGAM, the Korean Institute of Geoscience and Mineral Resources in Daejeon, South Korea
USGS scientists, Bill Waite, Tim Collett, and Seth Haines in front of a archway in Daejeon, South Korea
USGS scientists, Bill Waite, Tim Collett, and Seth Haines in front of a archway in Daejeon, South Korea
Early evening view of the lava lake within Halema‘uma‘u crater at the summit of Kīlauea Volcano on January 30, 2018, when the lake level was 27 m (88 ft) below the crater floor. The bright yellow area of spattering marks the location where the circulating lava descends into the lake, thereby releasing gases trapped beneath the solid black crust on the lake surface.
Early evening view of the lava lake within Halema‘uma‘u crater at the summit of Kīlauea Volcano on January 30, 2018, when the lake level was 27 m (88 ft) below the crater floor. The bright yellow area of spattering marks the location where the circulating lava descends into the lake, thereby releasing gases trapped beneath the solid black crust on the lake surface.
Volcano Watch (no. 7)
Volcano Watch (no. 5)
Scientists predicting lava flow shift from Kupaianaha vent
Scientists predicting lava flow shift from Kupaianaha vent
Volcano Watch (no. 4)
Volcano Watch (no. 3)
Volcano Watch (no. 2)