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Images related to natural hazards.
A comparison of a normal photograph with a thermal image of the leading tip of the active lobe on the June 27th lava flow. Corresponding points are marked with letters for reference. Active surface flows were present at the front of the lobe, and there were numerous small breakouts scattered in the immediate area upslope of the front.
A comparison of a normal photograph with a thermal image of the leading tip of the active lobe on the June 27th lava flow. Corresponding points are marked with letters for reference. Active surface flows were present at the front of the lobe, and there were numerous small breakouts scattered in the immediate area upslope of the front.
This large-scale map shows the distal part of Kīlauea's active East Rift Zone lava flow in relation to nearby Puna communities. The area of the flow on December 1, 2014, at 11:30 AM is shown in pink, while widening and advancement of the flow as mapped on December 9 at 2:30 PM is shown in red.
This large-scale map shows the distal part of Kīlauea's active East Rift Zone lava flow in relation to nearby Puna communities. The area of the flow on December 1, 2014, at 11:30 AM is shown in pink, while widening and advancement of the flow as mapped on December 9 at 2:30 PM is shown in red.
The leading tip of the active portion of the June 27th lava flow continues to advance downslope, and is 3.4 km (2.1 km) from the intersection of Highway 130 and Pāhoa Village Road (as measured along a straight line). The front has advanced 300 meters (0.2 miles) since Sunday, December 7, and 1.4 km (0.9 miles) since our last overflight on December 1.
The leading tip of the active portion of the June 27th lava flow continues to advance downslope, and is 3.4 km (2.1 km) from the intersection of Highway 130 and Pāhoa Village Road (as measured along a straight line). The front has advanced 300 meters (0.2 miles) since Sunday, December 7, and 1.4 km (0.9 miles) since our last overflight on December 1.
This map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of Kīlauea's active East Rift Zone lava flow. The area of the flow on December 1, 2014, at 11:30 AM is shown in pink, while widening and advancement of the flow as mapped on December 9 at 2:30 PM is shown in red.
This map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of Kīlauea's active East Rift Zone lava flow. The area of the flow on December 1, 2014, at 11:30 AM is shown in pink, while widening and advancement of the flow as mapped on December 9 at 2:30 PM is shown in red.
A vigorous channelized breakout on the flow, a short distance upslope of the leading tip of activity.
A vigorous channelized breakout on the flow, a short distance upslope of the leading tip of activity.
A breakout was also present in the upslope portion of the June 27th lava flow, closer to Pu‘u ‘Ō‘ō. The breakout point was about 800 meters (0.5 miles) north of Pu‘u Kahauale‘a, which is close to Pu‘u ‘Ō‘ō. The breakout began on December 5 from the existing lava tube, and this photo shows the breakout point clearly.
A breakout was also present in the upslope portion of the June 27th lava flow, closer to Pu‘u ‘Ō‘ō. The breakout point was about 800 meters (0.5 miles) north of Pu‘u Kahauale‘a, which is close to Pu‘u ‘Ō‘ō. The breakout began on December 5 from the existing lava tube, and this photo shows the breakout point clearly.
California volcanoes and threat rankings.
California volcanoes and threat rankings.
Fogo Volcano, as viewed from space, on November 24, 2014, at 11:58 UTC, shows lava flows (bright yellow and orange) erupting from Pico de Fogo. LANDSAT-8 image courtesy of Peter Webley (http://volcanodetect.blogspot.com/2014/11/landsat-view-of-fogo-volcano-…).
Fogo Volcano, as viewed from space, on November 24, 2014, at 11:58 UTC, shows lava flows (bright yellow and orange) erupting from Pico de Fogo. LANDSAT-8 image courtesy of Peter Webley (http://volcanodetect.blogspot.com/2014/11/landsat-view-of-fogo-volcano-…).
This image was acquired yesterday (December 1, 2014) by the WorldView 2 satellite, and shows the activity in the downslope portion of the June 27th lava flow. The portion of the June 27th lava flow that entered Pāhoa in October is inactive, but a new lobe is advancing downslope a short distance west of the earlier flow.
This image was acquired yesterday (December 1, 2014) by the WorldView 2 satellite, and shows the activity in the downslope portion of the June 27th lava flow. The portion of the June 27th lava flow that entered Pāhoa in October is inactive, but a new lobe is advancing downslope a short distance west of the earlier flow.
A closer look at the narrow lava channel near the leading tip of the active lobe. The channel consists of both open sections as well as sections that are crusted over.
A closer look at the narrow lava channel near the leading tip of the active lobe. The channel consists of both open sections as well as sections that are crusted over.
A small breakout was also active on the upslope portion of the June 27th lava flow. The pāhoehoe lava was flowing over an ‘A‘ā flow from late 2007.
A small breakout was also active on the upslope portion of the June 27th lava flow. The pāhoehoe lava was flowing over an ‘A‘ā flow from late 2007.
This small-scale map shows the June 27th lava flow in relation to lower Puna. The area of the flow on November 24, 2014, at 12:00 PM is shown in pink, while widening and advancement of the flow as mapped on December 1 at 11:30 AM is shown in red.
This small-scale map shows the June 27th lava flow in relation to lower Puna. The area of the flow on November 24, 2014, at 12:00 PM is shown in pink, while widening and advancement of the flow as mapped on December 1 at 11:30 AM is shown in red.
A comparison of a normal photograph with a thermal image of the leading tip of activity on the June 27th lava flow. The white box shows the rough extent of the thermal image. The thermal image shows the narrow lava channel near the leading tip of the new lobe.
A comparison of a normal photograph with a thermal image of the leading tip of activity on the June 27th lava flow. The white box shows the rough extent of the thermal image. The thermal image shows the narrow lava channel near the leading tip of the new lobe.
Aerial shot of Nauset Beach in Orleans, Massachusetts.
Aerial shot of Nauset Beach in Orleans, Massachusetts.
A digital still image can be overlaid onto the lidar “point cloud” data to give it a realistic 3D look.
A digital still image can be overlaid onto the lidar “point cloud” data to give it a realistic 3D look.
USGS Geographer Josh Logan sets up the lidar scanner near Capitola before the December 11, 2014 "Super Soaker" storm.
USGS Geographer Josh Logan sets up the lidar scanner near Capitola before the December 11, 2014 "Super Soaker" storm.
A comparison of a normal photograph with a thermal image of the narrow channel at the leading tip of the new lobe on the June 27th lava flow. The normal photograph is partially obscured by smoke from vegetation burning, but the thermal image can "see" through the smoke to show the nature of the channel in detail.
A comparison of a normal photograph with a thermal image of the narrow channel at the leading tip of the new lobe on the June 27th lava flow. The normal photograph is partially obscured by smoke from vegetation burning, but the thermal image can "see" through the smoke to show the nature of the channel in detail.
This map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of the June 27th lava flow. The area of the flow on November 24, 2014, at 12:00 PM is shown in pink, while widening and advancement of the flow as mapped on December 1 at 11:30 AM is shown in red.
This map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of the June 27th lava flow. The area of the flow on November 24, 2014, at 12:00 PM is shown in pink, while widening and advancement of the flow as mapped on December 1 at 11:30 AM is shown in red.
The breakouts that began about two weeks ago near the area of ground cracks continued to advance downslope over the past week, creating a new lobe on the June 27th lava flow. This lobe is a short distance west of the earlier portion of the June 27th flow that reached Pāhoa.
The breakouts that began about two weeks ago near the area of ground cracks continued to advance downslope over the past week, creating a new lobe on the June 27th lava flow. This lobe is a short distance west of the earlier portion of the June 27th flow that reached Pāhoa.
This large-scale map shows the distal part of the June 27th flow in relation to nearby Puna communities. The area of the flow on November 24, 2014, at 12:00 PM is shown in pink, while widening and advancement of the flow as mapped on December 1 at 11:30 AM is shown in red.
This large-scale map shows the distal part of the June 27th flow in relation to nearby Puna communities. The area of the flow on November 24, 2014, at 12:00 PM is shown in pink, while widening and advancement of the flow as mapped on December 1 at 11:30 AM is shown in red.
A vertical view of the lava flow in the area of ground cracks. Portions of the flow surface include numerous downed trees, resulting from the initial phases of the flow burning through the trunks, causing the trees to topple.
A vertical view of the lava flow in the area of ground cracks. Portions of the flow surface include numerous downed trees, resulting from the initial phases of the flow burning through the trunks, causing the trees to topple.