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Volcano Hazard Program images.
Cross section through the trunk of a lodgepole pine tree from Cooking Hillside near Mud Volcano, Yellowstone National Park. The earliest date for this tree is 1916 and it died in 1990. Spongy white-gray areas are foam insulation that was injected into the sample to reinforce the structure of the wood.
Cross section through the trunk of a lodgepole pine tree from Cooking Hillside near Mud Volcano, Yellowstone National Park. The earliest date for this tree is 1916 and it died in 1990. Spongy white-gray areas are foam insulation that was injected into the sample to reinforce the structure of the wood.
Data are collected every two minutes and sent by radio once per day to a server where values are plotted and released to the public internet.
Data are collected every two minutes and sent by radio once per day to a server where values are plotted and released to the public internet.
Lava fountains erupt from a fissure in the southwestern part of Moku`aeoweo, Mauna Loa's summit caldera, on April 11, 1940 (view looking to the south-southeast). Patches of white snow cling to the caldera walls as fluid pahoehoe lava flows spread across
Lava fountains erupt from a fissure in the southwestern part of Moku`aeoweo, Mauna Loa's summit caldera, on April 11, 1940 (view looking to the south-southeast). Patches of white snow cling to the caldera walls as fluid pahoehoe lava flows spread across
Aerial view from above the north rim of Pu`u `Ō `ō crater. Most of the activity was in the center of the pond (lighter grey area), where one of the vents was actively spattering and small pieces of crust were overturning.
Aerial view from above the north rim of Pu`u `Ō `ō crater. Most of the activity was in the center of the pond (lighter grey area), where one of the vents was actively spattering and small pieces of crust were overturning.
A striking view of a breakout atop one of the rootless shields on the Quarry flow. Lava is flowing from the breakout point near the bottom of the photo toward the top of the photo, where it reenters the lava tube and continues downslope.
A striking view of a breakout atop one of the rootless shields on the Quarry flow. Lava is flowing from the breakout point near the bottom of the photo toward the top of the photo, where it reenters the lava tube and continues downslope.
Kīlauea volcano's summit eruption plume as viewed from the southeast flank of Mauna Loa on 11/30/2009 (top) and 12/20/2009 (bottom). The eruption plume's visible appearance is a complex function of physical eruptive vent conditions, meteorology and atmosp
Kīlauea volcano's summit eruption plume as viewed from the southeast flank of Mauna Loa on 11/30/2009 (top) and 12/20/2009 (bottom). The eruption plume's visible appearance is a complex function of physical eruptive vent conditions, meteorology and atmosp
Records of the April 14, 2010, M3.8 earthquake, obtained from the Honomu, Hawai`i, NetQuakes seismograph. From top to bottom, the records show ground acceleration in east-west, north-south, and vertical directions. The records show roughly two minutes of
Records of the April 14, 2010, M3.8 earthquake, obtained from the Honomu, Hawai`i, NetQuakes seismograph. From top to bottom, the records show ground acceleration in east-west, north-south, and vertical directions. The records show roughly two minutes of
A NetQuakes digital seismograph with WiFi antenna and power cord attached (pencil shows scale).
A NetQuakes digital seismograph with WiFi antenna and power cord attached (pencil shows scale).
Aerial view of Kīlauea Volcano's south flank shows new lava flows in Royal Gardens subdivision (center) and the coastal plain (bottom center). Blue smoke (center right) is from burning vegetation caused by active lava flows. The developing lava-tube sys
Aerial view of Kīlauea Volcano's south flank shows new lava flows in Royal Gardens subdivision (center) and the coastal plain (bottom center). Blue smoke (center right) is from burning vegetation caused by active lava flows. The developing lava-tube sys
Should Maui residents be concerned about lava flows?
Should Maui residents be concerned about lava flows?
This image shows an HVO geologist sampling the lava that was seeping out of the interior of the rootless shield. The lava was placed in a bucket of water to quench the sample. The top frame is a normal photograph, while the bottom frame is a thermal image taken within a fraction of a second of the photograph.
This image shows an HVO geologist sampling the lava that was seeping out of the interior of the rootless shield. The lava was placed in a bucket of water to quench the sample. The top frame is a normal photograph, while the bottom frame is a thermal image taken within a fraction of a second of the photograph.
One of two small spatter cones that erupted through the crusted lava of a newly formed pond in Pu`u `Ō `ō. This cone is located at the base of the south wall of the crater.
One of two small spatter cones that erupted through the crusted lava of a newly formed pond in Pu`u `Ō `ō. This cone is located at the base of the south wall of the crater.
This photo was taken from the lamp on the other side of the plume. The FTIR is the small dark silhouette on the rim across the crater gap.
This photo was taken from the lamp on the other side of the plume. The FTIR is the small dark silhouette on the rim across the crater gap.
HVO gas geochemists deployed a FTIR spectrometer on the east rim of Pu`u `Ō `ō crater. The FTIR measures the composition of the East Wall vent gases by "looking" through the plume at an infrared lamp (obscured by fume in this photo)
HVO gas geochemists deployed a FTIR spectrometer on the east rim of Pu`u `Ō `ō crater. The FTIR measures the composition of the East Wall vent gases by "looking" through the plume at an infrared lamp (obscured by fume in this photo)
This image shows an HVO geologist sampling the lava that was seeping out of the interior of the rootless shield. The lava was placed in a bucket of water to quench the sample. The top frame is a normal photograph, while the bottom frame is a thermal image taken within a fraction of a second of the photograph.
This image shows an HVO geologist sampling the lava that was seeping out of the interior of the rootless shield. The lava was placed in a bucket of water to quench the sample. The top frame is a normal photograph, while the bottom frame is a thermal image taken within a fraction of a second of the photograph.
An HVO geologist samples lava from an active lava tube. These samples are analyzed routinely to track changes in lava chemistry.
An HVO geologist samples lava from an active lava tube. These samples are analyzed routinely to track changes in lava chemistry.
The dramatic change in Pu‘u ‘Ō‘ō landscape from 1992 (top) to 2005 (bottom). Both photos are taken from the same location, looking toward the east.
The dramatic change in Pu‘u ‘Ō‘ō landscape from 1992 (top) to 2005 (bottom). Both photos are taken from the same location, looking toward the east.
This photo shows the view with the naked eye during the high lava stand shown in the thermal video from today. When the lava is at a high stand like this, the plume becomes very thin and a rare view of the lava pond is possible. Typically, the fume is too thick to view the lava surface with the naked eye, and we rely on thermal cameras to image the lava.
This photo shows the view with the naked eye during the high lava stand shown in the thermal video from today. When the lava is at a high stand like this, the plume becomes very thin and a rare view of the lava pond is possible. Typically, the fume is too thick to view the lava surface with the naked eye, and we rely on thermal cameras to image the lava.
This photo shows the view into Overlook vent during a relatively high level of the lava lake in 2010. When the lava was at a high stand like this, the plume became very thin and a view of the lava lake was possible.
This photo shows the view into Overlook vent during a relatively high level of the lava lake in 2010. When the lava was at a high stand like this, the plume became very thin and a view of the lava lake was possible.
As evident by the small plume at the ocean entry, the amount of lava traveling through the tubes from the vent to the ocean has diminished. The most active area of the flow field is above the pali where the new rootless shield is forming.
As evident by the small plume at the ocean entry, the amount of lava traveling through the tubes from the vent to the ocean has diminished. The most active area of the flow field is above the pali where the new rootless shield is forming.
A closer view of the County viewing area, looking northeast. Again, the thermal image is shown together with a normal photograph. Recently emplaced flows, from the past several weeks, are light red (center of image). The currently active breakouts, just 250 yards northwest of the road, show up as white and yellow.
A closer view of the County viewing area, looking northeast. Again, the thermal image is shown together with a normal photograph. Recently emplaced flows, from the past several weeks, are light red (center of image). The currently active breakouts, just 250 yards northwest of the road, show up as white and yellow.