In the Mississippi River Birdfoot Delta, there is intense vegetation loss in marshes farthest away from the river, as indicated by high values of UVVR (shown in pink).
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Mississippi River Birdfoot Delta UVVR
In the Mississippi River Birdfoot Delta, there is intense vegetation loss in marshes farthest away from the river, as indicated by high values of UVVR (shown in pink).
Monitoring equipment in the ocean
Ocean engineer Gerry Hatcher, of the USGS Pacific Coastal and Marine Science Center (PCMSC), sits at a desk on board the USGS boat Sallenger. He and a team of scientists from PCMSC and sister team St.
Ocean engineer Gerry Hatcher, of the USGS Pacific Coastal and Marine Science Center (PCMSC), sits at a desk on board the USGS boat Sallenger. He and a team of scientists from PCMSC and sister team St.
Prime Hook National Wildlife Refuge UVVR
The Prime Hook National Wildlife Refuge in Delaware is the site of a $40 million tidal marsh restoration project—one of the largest restoration projects ever in the eastern U.S. With this project, the U.S.
The Prime Hook National Wildlife Refuge in Delaware is the site of a $40 million tidal marsh restoration project—one of the largest restoration projects ever in the eastern U.S. With this project, the U.S.
Sunset on the R/V Sproul
Looking across the back deck/stern of the R/V Robert Gordon Sproul. The wire going through the block in the A-frame leads to the CHIRP sonar fish towed in the water. Oil platforms are shown in the distance.
Looking across the back deck/stern of the R/V Robert Gordon Sproul. The wire going through the block in the A-frame leads to the CHIRP sonar fish towed in the water. Oil platforms are shown in the distance.
USGS Station ID 01075000 Pemigewasset River high-water mark monument
USGS station ID 01075000 Pemigewasset River at Woodstock, New Hampshire. The high-water mark monument was installed in May 2021, and shows the peak for the period of record at this gage was from Tropical Storm Irene. It still remains the highest peak to this day.
USGS station ID 01075000 Pemigewasset River at Woodstock, New Hampshire. The high-water mark monument was installed in May 2021, and shows the peak for the period of record at this gage was from Tropical Storm Irene. It still remains the highest peak to this day.
Wetland Ecologist Coloring Page
Wetland Ecologist Coloring Page
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Halema‘uma‘u lava lake, Kīlauea summit eruption—April 30, 2021
On Friday, April 30, lava continued to erupt from the west vent in Halema‘uma‘u at the summit of Kīlauea Volcano. Active surface lava (center of the photo) was limited to the center of the previously active lake surface, where the north (right) and south (left) sides have cooled and crusted over (appearing darker in the image). This photo was taken around 2 p.m.
On Friday, April 30, lava continued to erupt from the west vent in Halema‘uma‘u at the summit of Kīlauea Volcano. Active surface lava (center of the photo) was limited to the center of the previously active lake surface, where the north (right) and south (left) sides have cooled and crusted over (appearing darker in the image). This photo was taken around 2 p.m.
Hydrologic technicians deploying a flow sensor.
Hydrologic technicians deploying a flow sensor on a shoal in San Francisco Bay.
Hydrologic technicians deploying a flow sensor on a shoal in San Francisco Bay.
Scientists heading out to deploy sensors.
Scientists heading out to deploy sensors for sediment nutrient storage and release.
Scientists heading out to deploy sensors for sediment nutrient storage and release.
USGS scientist, Katy O'Donnell, monitoring instruments on a boat.
USGS scientist, Katy O'Donnell, monitoring instruments onboard a high-speed mapping boat.
USGS scientist, Katy O'Donnell, monitoring instruments onboard a high-speed mapping boat.
View of Kīlauea summit eruption gas plume from southeast — April 30
While hiking along the rim of the 2018 collapse area at the summit of Kīlauea, HVO scientists visited a site to the southeast of Halema‘uma‘u known as Akanikōlea—a culturally-significant place that is featured in Hawaiian legends.
While hiking along the rim of the 2018 collapse area at the summit of Kīlauea, HVO scientists visited a site to the southeast of Halema‘uma‘u known as Akanikōlea—a culturally-significant place that is featured in Hawaiian legends.
View of Kīlauea's September 1982 lava flow lobe — April 30, 2021
HVO scientists hiked along the closed Crater Rim Road on April 30th to retrieve acoustic (sound) sensors for a scientific study. This section of the road was damaged by earthquake activity during the 2018 Kīlauea summit caldera collapse. This stretch of road traverses part of the September 1982 lava flow, visible as a lobe of black rock on the right of the road.
HVO scientists hiked along the closed Crater Rim Road on April 30th to retrieve acoustic (sound) sensors for a scientific study. This section of the road was damaged by earthquake activity during the 2018 Kīlauea summit caldera collapse. This stretch of road traverses part of the September 1982 lava flow, visible as a lobe of black rock on the right of the road.
Intertidal Zone Invertebrates
This rock is covered with invertebrate animals over nearly the entire surface including orange and purple sea stars, green anemones spotted with shell debris of other animals, and black mussels.
This rock is covered with invertebrate animals over nearly the entire surface including orange and purple sea stars, green anemones spotted with shell debris of other animals, and black mussels.
Large Array of Laboratory Glassware, USGS - NMWSC
Large Array of Laboratory Glassware, USGS - NMWSC
Large Array of Laboratory Glassware, USGS - NMWSC
Measuring SPATT resin
Technician Kathryn Cahalane using an analytical balance to measure resin for SPATT production.
Technician Kathryn Cahalane using an analytical balance to measure resin for SPATT production.
Thermo Scientific Muffle Furnace, USGS - NMWSC
Thermo Scientific Muffle Furnace, USGS - NMWSC
Thermo Scientific Muffle Furnace, USGS - NMWSC
Tsunami Evacuation Route Sign
Tsunami Evacuation Route Sign
Tsunami Evacuation Sign
Tsunami Evacuation Route Sign
Tsunami Evacuation Route Sign
Tsunami Hazard Zone Sign
View of lava lake in Halema‘uma‘u—Kīlauea, April 27, 2021
The lava lake in Halema‘uma‘u crater, at the summit of Kīlauea, remains active, as seen in this view looking north. Active surface lava is limited to the western (left) portion of the lake between the main island and the western fissure complex.
The lava lake in Halema‘uma‘u crater, at the summit of Kīlauea, remains active, as seen in this view looking north. Active surface lava is limited to the western (left) portion of the lake between the main island and the western fissure complex.
Close-up view of the west vent and inlet at Halema‘uma‘u
A close-up view of the west vent spatter cones (bottom left) and inlet where lava is entering the lava lake (center right) in Halema‘uma‘u Crater at the summit of Kīlauea Volcano. A piece of crust, that solidified near the inlet, broke off and was being transported away from the inlet. This photograph was taken on April 26, 2021, at 1:51 p.m.
A close-up view of the west vent spatter cones (bottom left) and inlet where lava is entering the lava lake (center right) in Halema‘uma‘u Crater at the summit of Kīlauea Volcano. A piece of crust, that solidified near the inlet, broke off and was being transported away from the inlet. This photograph was taken on April 26, 2021, at 1:51 p.m.