This shaded relief image was produced from LIDAR data. LIDAR is an acronym for Light Detection and Ranging, a modern remote sensing technique used to map topography very accurately—more so than is possible with older techniques. The crater is 1.2 miles (1.9 km) wide east-west. Elsewhere the scale varies owing to the oblique viewing angle.
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Digital Elevation Map of Mount St. Helens with annotation of pre-19...
This shaded relief image was produced from LIDAR data. LIDAR is an acronym for Light Detection and Ranging, a modern remote sensing technique used to map topography very accurately—more so than is possible with older techniques. The crater is 1.2 miles (1.9 km) wide east-west. Elsewhere the scale varies owing to the oblique viewing angle.
Wes Hildreth at Long Valley Caldera
Wes Hildreth is an expert when it comes to studying the Long Valley Caldera. Here, he is standing on Tertiary basalt lava flows on the north rim of the caldera, view to the southeast with Lake Crowley visible in the center of the caldera, and McGee Mountain above the lake on the skyline.
Wes Hildreth is an expert when it comes to studying the Long Valley Caldera. Here, he is standing on Tertiary basalt lava flows on the north rim of the caldera, view to the southeast with Lake Crowley visible in the center of the caldera, and McGee Mountain above the lake on the skyline.
sonar on a bottom platform
A sonar on a bottom platform while steaming to the deployment site in the Columbia River in 2013. The 3 platforms acquired data on currents and sediment transport at the river mouth over several months.
A sonar on a bottom platform while steaming to the deployment site in the Columbia River in 2013. The 3 platforms acquired data on currents and sediment transport at the river mouth over several months.
Deploying multichannel seismic streamer
Eric Moore, Wayne Baldwin, and Tommy O’Brien are deploying multichannel seismic streamer onboard R/V Pelican during a 2013 seismic cruise in the Gulf of Mexico as part of the gas hydrates program.
Eric Moore, Wayne Baldwin, and Tommy O’Brien are deploying multichannel seismic streamer onboard R/V Pelican during a 2013 seismic cruise in the Gulf of Mexico as part of the gas hydrates program.
Northern Lights
Northern Lights over the World Heritage site. The aurora is more active when there are solar flares on the sun.
Northern Lights over the World Heritage site. The aurora is more active when there are solar flares on the sun.
Variations of repeating earthquake activity through time
Top: Map of repeating earthquake areas corresponding to the deformation episodes, below. Bottom: Left 1996-1998 Yellowstone caldera uplift episode. Middle: 1998-2004 subsidence episode. Right: 2004-2010 uplift episode. Bottom: vertical ground deformation from GPS observations at station, WLWY, on the Sour Creek resurgent dome.
Top: Map of repeating earthquake areas corresponding to the deformation episodes, below. Bottom: Left 1996-1998 Yellowstone caldera uplift episode. Middle: 1998-2004 subsidence episode. Right: 2004-2010 uplift episode. Bottom: vertical ground deformation from GPS observations at station, WLWY, on the Sour Creek resurgent dome.
Example of Yellowstone earthquake multiplets (families of repeating...
The seismic records or waveforms are from two seismic stations, and show the highly repetitive and similar nature of the seismic events.
The seismic records or waveforms are from two seismic stations, and show the highly repetitive and similar nature of the seismic events.
Time history of Yellowstone caldera uplift and subsidence patterns ...
Time history of Yellowstone Caldera uplift (black line) and subsidence patterns along with quarterly catalog earthquake counts (blue bars). Note that large swarms in 1985 and 2010 accompany uplift to subsidence of caldera. The vertical deformation on the right axis was measured at the Sour Creek (SC) dome in the eastern part of the Yellowstone Caldera.
Time history of Yellowstone Caldera uplift (black line) and subsidence patterns along with quarterly catalog earthquake counts (blue bars). Note that large swarms in 1985 and 2010 accompany uplift to subsidence of caldera. The vertical deformation on the right axis was measured at the Sour Creek (SC) dome in the eastern part of the Yellowstone Caldera.
Resistivity Plot
Resistivity values for wet (average 7.8 Wt.% moisture content) compacted (lighter shades) and uncompacted (darker shades) fresh ash samples.
Resistivity values for wet (average 7.8 Wt.% moisture content) compacted (lighter shades) and uncompacted (darker shades) fresh ash samples.
Lava lake in Halema‘uma‘u remains active
The summit lava lake is contained within the Overlook crater, which is about 160 m (520 ft) by 210 m (690 ft) in size, and set within the larger Halema‘uma‘u Crater. The lava lake this week has been about 50 m (160 ft) below the rim of the Overlook crater.
The summit lava lake is contained within the Overlook crater, which is about 160 m (520 ft) by 210 m (690 ft) in size, and set within the larger Halema‘uma‘u Crater. The lava lake this week has been about 50 m (160 ft) below the rim of the Overlook crater.
summit lava lake.
A closer look at the summit lava lake.
A closer look at the summit lava lake.
Kahauale‘a 2 flow slowly moving through forest NE of Pu‘u ‘Ō‘ō
The Kahauale‘a 2 flow continues to slowly move through the forest northeast of Pu‘u ‘Ō‘ō. Today, the active flow front was 6.3 km (3.9 miles) northeast of the vent on Pu‘u ‘Ō‘ō. Pu‘u ‘Ō‘ō is just left of the center of the photograph in the distance, partially obscured by the smoke.
The Kahauale‘a 2 flow continues to slowly move through the forest northeast of Pu‘u ‘Ō‘ō. Today, the active flow front was 6.3 km (3.9 miles) northeast of the vent on Pu‘u ‘Ō‘ō. Pu‘u ‘Ō‘ō is just left of the center of the photograph in the distance, partially obscured by the smoke.
active flows at the forest boundary, and the numerous plumes of smo...
A closer view of the active flows at the forest boundary, and the numerous plumes of smoke resulting from active lava igniting ‘oKAHAKOhi‘a trees and other vegetation.
A closer view of the active flows at the forest boundary, and the numerous plumes of smoke resulting from active lava igniting ‘oKAHAKOhi‘a trees and other vegetation.
Lava lake in Halema‘uma‘u remains active
The summit lava lake is contained within the Overlook crater, which is about 160 m (520 ft) by 210 m (690 ft) in size, and set within the larger Halema‘uma‘u Crater. The lava lake this week has been about 50 m (160 ft) below the rim of the Overlook crater.
The summit lava lake is contained within the Overlook crater, which is about 160 m (520 ft) by 210 m (690 ft) in size, and set within the larger Halema‘uma‘u Crater. The lava lake this week has been about 50 m (160 ft) below the rim of the Overlook crater.
summit lava lake.
A closer look at the summit lava lake.
A closer look at the summit lava lake.
Weather buoy transport!
Sandy Brosnahan transporting a weather buoy into the Woods Hole Coastal and Marine Science Center’s operational facility to continue the process of getting it ready to deploy. This buoy was one of 6, deployed by John Warner and others, to measure wind speed, direction, pressure, and temperature off the coast of Fire Island, NY. Paired with each weather b
Sandy Brosnahan transporting a weather buoy into the Woods Hole Coastal and Marine Science Center’s operational facility to continue the process of getting it ready to deploy. This buoy was one of 6, deployed by John Warner and others, to measure wind speed, direction, pressure, and temperature off the coast of Fire Island, NY. Paired with each weather b
Jan 2014—Hawai‘i Island's 5th annual Volcano Awareness Month
This fissure eruption on Kīlauea's East Rift Zone in March 2011 reminds us of how exciting it can be to live on or near active volcanoes, but also why we need to be aware of the hazards they pose.
This fissure eruption on Kīlauea's East Rift Zone in March 2011 reminds us of how exciting it can be to live on or near active volcanoes, but also why we need to be aware of the hazards they pose.
Landsat 8 satellite image of Pu‘u ‘Ō‘ō flow field
This image was captured on Tuesday, December 10 by Landsat 8, a new NASA Earth-observing satellite that was launched in February of this year and entered service in May. The image shows the Pu‘u ‘Ō‘ō lava flow field on Kīlauea's east rift zone. Although this is a false-color image, the color map has been chosen to mimic what the human eye would expect to see.
This image was captured on Tuesday, December 10 by Landsat 8, a new NASA Earth-observing satellite that was launched in February of this year and entered service in May. The image shows the Pu‘u ‘Ō‘ō lava flow field on Kīlauea's east rift zone. Although this is a false-color image, the color map has been chosen to mimic what the human eye would expect to see.
Mount St. Helens and North Fork Toutle River Channel.
Mount St. Helens and North Fork Toutle River Channel.
Mount St. Helens and North Fork Toutle River Channel.
A close-up of Pele's hair at Halema‘uma‘u.
A close-up of Pele's hair at Halema‘uma‘u.
A close-up of Pele's hair at Halema‘uma‘u.
Pele's hair at Halema‘uma‘u
Pele's hair (thin strands of volcanic glass drawn out from molten lava) is abundant around Halema`uma`u Crater (Kīlauea, Hawaii). It originates from the active, spattering lava lake and in some areas, makes a nearly continuous carpet, highlighted here in the afternoon sun.
Pele's hair (thin strands of volcanic glass drawn out from molten lava) is abundant around Halema`uma`u Crater (Kīlauea, Hawaii). It originates from the active, spattering lava lake and in some areas, makes a nearly continuous carpet, highlighted here in the afternoon sun.