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Changes in color at Kīlauea's summit water pond are common
Changes in color at Kīlauea's summit water pond are common
Changes in color at Kīlauea's summit water pond are common

This compilation shows the appearance of the water pond at Kīlauea's summit over the past two weeks. Day to day changes in the color of the pond are common, with portions of the pond shifting from a green hue to brown. A sharp color boundary has been common for several months in the same general area of the pond.

This compilation shows the appearance of the water pond at Kīlauea's summit over the past two weeks. Day to day changes in the color of the pond are common, with portions of the pond shifting from a green hue to brown. A sharp color boundary has been common for several months in the same general area of the pond.

Map of seismic research site on seafloor off Puerto Rico
Scientists find signs of undersea faults off SW Puerto Rico
Scientists find signs of undersea faults off SW Puerto Rico
Scientists find signs of undersea faults off SW Puerto Rico

Locations of multichannel seismic reflection profiles (in black), collected during cruise FA2020-14. The profiles are overlain on colored and shaded multibeam bathymetry, Lidar topography (green and white) and near-shore bathymetry (darker blue), and NOAA coastal relief model (light blue and white).

Locations of multichannel seismic reflection profiles (in black), collected during cruise FA2020-14. The profiles are overlain on colored and shaded multibeam bathymetry, Lidar topography (green and white) and near-shore bathymetry (darker blue), and NOAA coastal relief model (light blue and white).

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Close monitoring of the summit water pond continues
Close monitoring of the summit water pond continues
Close monitoring of the summit water pond continues

Clear weather allowed another water pond measurement to be made this morning. Results show continued slow rise of the water level. No major changes were observed. Note the former HVO observation tower can be seen above the geologist's helmet.

Clear weather allowed another water pond measurement to be made this morning. Results show continued slow rise of the water level. No major changes were observed. Note the former HVO observation tower can be seen above the geologist's helmet.

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Day to day changes in the color of the water pond are common. This morning the
Day to day changes in the color of the water pond are common. This morning the
Day to day changes in the color of the water pond are common. This morning the

Day to day changes in the color of the water pond are common. This morning the pond had a browner hue compared to the previous observation on April 1, when the pond color was slightly more greenish yellow (see photo below).

aerial view of edge of lake showing cracks under the water
Stanley Lake Cracks from Stanley, Idaho Earthquake Liquefaction
Stanley Lake Cracks from Stanley, Idaho Earthquake Liquefaction
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Physical map of the western USA showing locations of strong earthquakes in March
Physical map of the western USA showing locations of strong earthquakes in March
Physical map of the western USA showing locations of strong earthquakes in March

Physical map of the western USA showing locations of strong earthquakes in March 2020 and Basin and Range extensional province. The Basin and Range stretches from the Sierra Nevada in the west to the Wasatch and Teton mountains in the east, and from central Idaho and southwest Montana in the north to Mexico in the south.

Physical map of the western USA showing locations of strong earthquakes in March 2020 and Basin and Range extensional province. The Basin and Range stretches from the Sierra Nevada in the west to the Wasatch and Teton mountains in the east, and from central Idaho and southwest Montana in the north to Mexico in the south.

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HVO looks to the past to better understand future Mauna Loa eruptions
HVO looks to the past to better understand future Mauna Loa eruptions
HVO looks to the past to better understand future Mauna Loa eruptions

During the 1926 Mauna Loa eruption, an ‘a‘ā flow about 457 m (1500 ft) wide and 9 m (30 ft) high headed straight for the village of Ho‘ōpūloa on April 18, as shown here. By the next day, the lava flow had destroyed a dozen houses, a church, and the wharf, and had nearly obliterated the bay. Photo by Army Air Corps, 11th Photo Section.

During the 1926 Mauna Loa eruption, an ‘a‘ā flow about 457 m (1500 ft) wide and 9 m (30 ft) high headed straight for the village of Ho‘ōpūloa on April 18, as shown here. By the next day, the lava flow had destroyed a dozen houses, a church, and the wharf, and had nearly obliterated the bay. Photo by Army Air Corps, 11th Photo Section.

Aerial photograph showing a fiord and bay area, labeled with features like fan deltas from rivers.
Overview of Taan Fiord
Overview of Taan Fiord
Overview of Taan Fiord

Overview of Taan Fiord. Inset showing location of Taan Fiord, Alaska in Wrangell St. Elias National Park and Preserve. Taan Fiord is about 100 km from the nearest town, Yakutat, AK. Landsat 8 image of Taan Fiord acquired in 2016. Vegetation loss is clear near the water line.

Overview of Taan Fiord. Inset showing location of Taan Fiord, Alaska in Wrangell St. Elias National Park and Preserve. Taan Fiord is about 100 km from the nearest town, Yakutat, AK. Landsat 8 image of Taan Fiord acquired in 2016. Vegetation loss is clear near the water line.

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The water pond from the webcam site. This view provides a better view of the gr
The water pond from the webcam site. This view provides a better view of the gr
The water pond from the webcam site. This view provides a better view of the gr

The water pond from the webcam site. This view provides a better view of the greenish zone in the west end of the pond (bottom right of photo).

Home damaged by post fire debris flow
Home damaged by post-wildfire debris flow in Montecito, CA.
Home damaged by post-wildfire debris flow in Montecito, CA.
Home mostly covered by a debris flow in southern California
Debris flow after the 2003 Old Gran Prix fire
Debris flow after the 2003 Old Gran Prix fire
Debris flow after the 2003 Old Gran Prix fire

Damage from a major post-wildfire landslide that occurred on 25 December 2003 near Devore, San Bernardino County as a result of the Old/Grand Prix fires that ran through the San Bernardino Mountains.

Damage from a major post-wildfire landslide that occurred on 25 December 2003 near Devore, San Bernardino County as a result of the Old/Grand Prix fires that ran through the San Bernardino Mountains.

Marine technician deploy a hydrophone off Puerto Rico
USGS marine technicians launch a hydrophone off Puerto Rico seafloor
USGS marine technicians launch a hydrophone off Puerto Rico seafloor
USGS marine technicians launch a hydrophone off Puerto Rico seafloor

USGS marine technicians Alex Nichols (L) and Eric Moore (R) deploy the hydrophone array on a seismic research cruise off the southwest coast of Puerto Rico aboard the R/V Sultana in March 2020.

USGS technicians launch "sparker" used in seafloor mapping
Three scientists launch a "sparker" used in seafloor mapping
Three scientists launch a "sparker" used in seafloor mapping
Three scientists launch a "sparker" used in seafloor mapping

USGS research geologist Jason Chaytor (L) and marine technicians Alex Nichols (center) and Eric Moore (R) deploy the “sparker” sound source on a seismic research cruise off the southwest coast of Puerto Rico aboard the R/V Sultana in March 2020.

USGS research geologist Jason Chaytor (L) and marine technicians Alex Nichols (center) and Eric Moore (R) deploy the “sparker” sound source on a seismic research cruise off the southwest coast of Puerto Rico aboard the R/V Sultana in March 2020.

People working on boat in body of water
Deploying streamer
Deploying streamer
Scientist on research vessel prepares to launch hydrophone
Scientist launches instrument used to map seafloor off Puerto Rico
Scientist launches instrument used to map seafloor off Puerto Rico
Scientist launches instrument used to map seafloor off Puerto Rico

USGS marine technician Wayne Baldwin prepares to deploy the hydrophone array during a seismic research cruise off the southwest coast of Puerto Rico on board the R/V Sultana in March 2020.

Photograph of Woods Hole Coastal and Marine Science Center Sediment Analysis Laboratory showing the laboratory computer workstat
Woods Hole Coastal and Marine Science Center Sediment Analysis Lab
Woods Hole Coastal and Marine Science Center Sediment Analysis Lab
Woods Hole Coastal and Marine Science Center Sediment Analysis Lab

View inside the Woods Hole Coastal and Marine Science Center Sediment Analysis Laboratory showing the laboratory computer workstation, precision balances, and interior of the oven and sieving room.

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Mushroom Pool, in the Lower Geyser Basin of Yellowstone National Park. The pool
Mushroom Pool, in the Lower Geyser Basin of Yellowstone National Park. The pool
Mushroom Pool, in the Lower Geyser Basin of Yellowstone National Park. The pool

Mushroom Pool, in the Lower Geyser Basin of Yellowstone National Park, as it looked in June 23, 1967. The sample that would be the source of Thermus aquaticus strain YT-1 came from this hot spring. Pictured is Thomas Brock standing near the edge of the pool. Image from the self-published "A Scientist in Yellowstone National Park" (Brock, 2017).

Mushroom Pool, in the Lower Geyser Basin of Yellowstone National Park, as it looked in June 23, 1967. The sample that would be the source of Thermus aquaticus strain YT-1 came from this hot spring. Pictured is Thomas Brock standing near the edge of the pool. Image from the self-published "A Scientist in Yellowstone National Park" (Brock, 2017).

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