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Images related to natural hazards.
Another look at the margin of the Kahauale‘a 2 flow. Small vegetation fires triggered by the active lava spread a short distance out from the flow margin.
Another look at the margin of the Kahauale‘a 2 flow. Small vegetation fires triggered by the active lava spread a short distance out from the flow margin.
A near-vertical look at the margin of the Kahauale‘a 2 flow. Numerous trees surrounded by the slowly moving pāhoehoe lava were burned through at their base, causing them to eventually fall over onto the flow itself.
A near-vertical look at the margin of the Kahauale‘a 2 flow. Numerous trees surrounded by the slowly moving pāhoehoe lava were burned through at their base, causing them to eventually fall over onto the flow itself.
The lava lake remains active in the Overlook crater, which is nested within the larger Halema‘uma‘u Crater. The Overlook crater today was filled with thick fume, making visual observations of the lava lake difficult.
The lava lake remains active in the Overlook crater, which is nested within the larger Halema‘uma‘u Crater. The Overlook crater today was filled with thick fume, making visual observations of the lava lake difficult.
Another view of the Overlook crater, comparing the visual photograph with a thermal image taken from a similar position. The thermal camera can "see" through thick fume, providing an unobstructed view of the crater and lava lake.
Another view of the Overlook crater, comparing the visual photograph with a thermal image taken from a similar position. The thermal camera can "see" through thick fume, providing an unobstructed view of the crater and lava lake.
The Kahauale‘a 2 flow, which began just over a year ago, remains active northeast of Pu‘u ‘Ō‘ō. Activity on the flow seems to have diminished slightly over the past two weeks, following deflation at the summit.
The Kahauale‘a 2 flow, which began just over a year ago, remains active northeast of Pu‘u ‘Ō‘ō. Activity on the flow seems to have diminished slightly over the past two weeks, following deflation at the summit.
On the left, a normal photograph shows the front of the Kahauale‘a 2 flow. On the right, a thermal image shows a similar angle but in the infrared. Warm, but inactive, portions of the flow are shown by the purple and red colors, while the white and yellow areas shows active breakouts.
On the left, a normal photograph shows the front of the Kahauale‘a 2 flow. On the right, a thermal image shows a similar angle but in the infrared. Warm, but inactive, portions of the flow are shown by the purple and red colors, while the white and yellow areas shows active breakouts.
A closer view of the Kahauale‘a 2 flow front. The leading tip of the flow, inactive today, is in the upper right portion of the photograph. The small smoke plume is caused by active breakouts on the flow margin.
A closer view of the Kahauale‘a 2 flow front. The leading tip of the flow, inactive today, is in the upper right portion of the photograph. The small smoke plume is caused by active breakouts on the flow margin.
A lone time-lapse camera, perched on a mound of solidified lava spatter, withstands thick volcanic fume and brutal weather to provide a record of lava pond activity in the northeast portion of Pu‘u ‘Ō‘ō crater. This spot is also the vent area for the Kahauale‘a 2 lava flow.
A lone time-lapse camera, perched on a mound of solidified lava spatter, withstands thick volcanic fume and brutal weather to provide a record of lava pond activity in the northeast portion of Pu‘u ‘Ō‘ō crater. This spot is also the vent area for the Kahauale‘a 2 lava flow.
As of 7:00 a.m. HST, July 25, 2018, the lava flow margins had not expanded since the previous map, so no red areas (indicating expansion) appear on this map.
As of 7:00 a.m. HST, July 25, 2018, the lava flow margins had not expanded since the previous map, so no red areas (indicating expansion) appear on this map.
Smoke from the Slide fire, a major wildfire near Flagstaff, Arizona, is apparent in this hemispheric, natural-color image of sky conditions. The image was acquired at the USGS Flagstaff Science Campus at 3:00 p.m.
Smoke from the Slide fire, a major wildfire near Flagstaff, Arizona, is apparent in this hemispheric, natural-color image of sky conditions. The image was acquired at the USGS Flagstaff Science Campus at 3:00 p.m.
Oso Landslide
Oso Landslide
The distal tip of the Kahauale‘a 2 flow, shown here, was 8.6 km (5.3 miles) straight-line distance northeast of Pu‘u ‘Ō‘ō when mapped today. The flows advanced about 300 m (0.2 miles) since April 28.
The distal tip of the Kahauale‘a 2 flow, shown here, was 8.6 km (5.3 miles) straight-line distance northeast of Pu‘u ‘Ō‘ō when mapped today. The flows advanced about 300 m (0.2 miles) since April 28.
New flows on the floor of Pu‘u ‘Ō‘ō crater over the past few weeks threatened cameras positioned on the crater's north rim. Two cameras—a thermal camera observing the crater and a regular webcam observing the active Kahauale‘a 2 flow in the distance—were moved to a safer location partway up the steep northwestern flank of Pu‘u ‘Ō‘ō cone.
New flows on the floor of Pu‘u ‘Ō‘ō crater over the past few weeks threatened cameras positioned on the crater's north rim. Two cameras—a thermal camera observing the crater and a regular webcam observing the active Kahauale‘a 2 flow in the distance—were moved to a safer location partway up the steep northwestern flank of Pu‘u ‘Ō‘ō cone.
New flows on the floor of Pu‘u ‘Ō‘ō crater over the past few weeks threatened cameras positioned on the crater's north rim. Two cameras—a thermal camera observing the crater and a regular webcam observing the active Kahauale‘a 2 flow in the distance—were moved to a safer location partway up the steep northwestern flank of Pu‘u ‘Ō‘ō cone.
New flows on the floor of Pu‘u ‘Ō‘ō crater over the past few weeks threatened cameras positioned on the crater's north rim. Two cameras—a thermal camera observing the crater and a regular webcam observing the active Kahauale‘a 2 flow in the distance—were moved to a safer location partway up the steep northwestern flank of Pu‘u ‘Ō‘ō cone.
The distal tip of the Kahauale‘a 2 flow, shown here, was 8.6 km (5.3 miles) straight-line distance northeast of Pu‘u ‘Ō‘ō when mapped today. The flows advanced about 300 m (0.2 miles) since April 28.
The distal tip of the Kahauale‘a 2 flow, shown here, was 8.6 km (5.3 miles) straight-line distance northeast of Pu‘u ‘Ō‘ō when mapped today. The flows advanced about 300 m (0.2 miles) since April 28.
A lava flow fed from a spatter cone on the south part of Pu‘u ‘Ō‘ō's crater floor (the South spatter cone) continues to advance toward the east-southeast, and is about 700 m from its vent. The flow is the silvery lava that crosses the center of the photo.
A lava flow fed from a spatter cone on the south part of Pu‘u ‘Ō‘ō's crater floor (the South spatter cone) continues to advance toward the east-southeast, and is about 700 m from its vent. The flow is the silvery lava that crosses the center of the photo.
The flow from the South spatter cone has buried part of the southern flank of Pu‘u ‘Ō‘ō cone, leaving little of the original tephra that composes the cone visible. Compare this photo to the one taken just a few months ago, on March 7.
The flow from the South spatter cone has buried part of the southern flank of Pu‘u ‘Ō‘ō cone, leaving little of the original tephra that composes the cone visible. Compare this photo to the one taken just a few months ago, on March 7.
The flow from the South spatter cone has buried part of the southern flank of Pu‘u ‘Ō‘ō cone, leaving little of the original tephra that composes the cone visible. Compare this photo to the one taken just a few months ago, on March 7.
The flow from the South spatter cone has buried part of the southern flank of Pu‘u ‘Ō‘ō cone, leaving little of the original tephra that composes the cone visible. Compare this photo to the one taken just a few months ago, on March 7.
A buoy instrumented to collect meteorological observations is recovered off Fire Island, NY in 2014. The data collected is part of a study of the coastal processes that mobilize and transport sediment in the region
A buoy instrumented to collect meteorological observations is recovered off Fire Island, NY in 2014. The data collected is part of a study of the coastal processes that mobilize and transport sediment in the region
A remotely operated vessel starts a survey at dawn off Fire Island, NY in 2014. The data collected is part of a study of the coastal processes that mobilize and transport sediment in the region
A remotely operated vessel starts a survey at dawn off Fire Island, NY in 2014. The data collected is part of a study of the coastal processes that mobilize and transport sediment in the region
Bathymetric the islands and seamounts that make up the Mariana volcanic island arc (left) and the area of Ahyi seamount in the northern part of the arc (right). Susan Merle of NOAA's Earth-Ocean Interaction Program created these maps.
Bathymetric the islands and seamounts that make up the Mariana volcanic island arc (left) and the area of Ahyi seamount in the northern part of the arc (right). Susan Merle of NOAA's Earth-Ocean Interaction Program created these maps.