New bathymetry data of the New England Seamounts collected with the EM 304 MK II variant during the 2021 North Atlantic Stepping Stones: New England and Corner Rise Seamount Chain (EX-21-04) expedition, overlaid on the Global Multi-Resolution Topography Data Synthesis grid.
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Bathymetry data of the New England Seamounts
New bathymetry data of the New England Seamounts collected with the EM 304 MK II variant during the 2021 North Atlantic Stepping Stones: New England and Corner Rise Seamount Chain (EX-21-04) expedition, overlaid on the Global Multi-Resolution Topography Data Synthesis grid.
Chany Huddleston and Ross Clyma prepare QBoat at Schoharie Creek
Photo Contest Winner | September 2021 | Where We Work
Chany Huddleston and Ross Clyma prepare QBoat at Schoharie Creek
Photo Contest Winner | September 2021 | Where We Work
Chany Huddleston and Ross Clyma prepare QBoat at Schoharie Creek
Kīlauea caldera gas mapping - July 28, 2021 — Kīlauea
A USGS scientist calibrates two MultiGas instruments to prepare for mapping volcanic gasses on the floor of Kīlauea caldera. With the MultiGas strapped to metal backpack frames, the scientists traverse across the caldera floor to collect gas data which will be compared to the last survey.
A USGS scientist calibrates two MultiGas instruments to prepare for mapping volcanic gasses on the floor of Kīlauea caldera. With the MultiGas strapped to metal backpack frames, the scientists traverse across the caldera floor to collect gas data which will be compared to the last survey.
Kīlauea caldera gas mapping - July 28, 2021 — Kīlauea
While mapping volcanic gasses in Kīlauea caldera, HVO scientists got a view (looking west) of Halema‘uma‘u and the down-dropped block. The steep crater walls of Halema‘uma‘u are visible in the upper center and right portions of this photo, but the recently active lava lake is out of view below the eastern crater rim.
While mapping volcanic gasses in Kīlauea caldera, HVO scientists got a view (looking west) of Halema‘uma‘u and the down-dropped block. The steep crater walls of Halema‘uma‘u are visible in the upper center and right portions of this photo, but the recently active lava lake is out of view below the eastern crater rim.
Field Work at Keller Well
HVO geologists measure the depth to the water table at the Keller Well, located south of Halema‘uma‘u crater. The Keller Well is a borehole drilled in 1973 to a depth of 4,140 ft (1,262 m) that has been used to monitor the hydrology of the summit region of Kīlauea volcano. Photo taken on July 27, 2021, at 9:30 a.m. HST. USGS photo by J.M. Chang.
HVO geologists measure the depth to the water table at the Keller Well, located south of Halema‘uma‘u crater. The Keller Well is a borehole drilled in 1973 to a depth of 4,140 ft (1,262 m) that has been used to monitor the hydrology of the summit region of Kīlauea volcano. Photo taken on July 27, 2021, at 9:30 a.m. HST. USGS photo by J.M. Chang.
Muddy Creek near Dad streamgage, zero flow
Muddy Creek near Dad streamgage, zero flow
Muddy Creek near Dad streamgage, zero flow
Maintenance of volcano monitoring webcam—Kīlauea summit
An HVO geologist conducts maintenance on the S1cam web camera located along the southern rim of Halema‘uma‘u, at the summit of Kīlauea.
An HVO geologist conducts maintenance on the S1cam web camera located along the southern rim of Halema‘uma‘u, at the summit of Kīlauea.
Nick Grim and Cameron Ensor rescuing a goose
Photo Contest Winner | August 2021 | Honorable Mention 2
Nick Grim and Cameron Ensor rescuing a goose that got stuck in fishing line on the Delaware River
Photo Contest Winner | August 2021 | Honorable Mention 2
Nick Grim and Cameron Ensor rescuing a goose that got stuck in fishing line on the Delaware River
The Yellowstone borehole geophysical network
The Yellowstone borehole geophysical network, installed by UNAVCO in 2007–2008. The placement of the boreholes is focused primarily around the caldera, and the boreholes contain a mix of instruments, including strainmeters, seismometers, tiltmeters, and pore pressure sensors.
The Yellowstone borehole geophysical network, installed by UNAVCO in 2007–2008. The placement of the boreholes is focused primarily around the caldera, and the boreholes contain a mix of instruments, including strainmeters, seismometers, tiltmeters, and pore pressure sensors.
Aerial photo of inactive lava lake—Halema‘uma‘u, Kīlauea summit
This aerial photo of the inactive lava lake within Halema‘uma‘u at the summit of Kīlauea was captured during a routine helicopter overflight by HVO geologists on Thursday, July 22, 2021.
This aerial photo of the inactive lava lake within Halema‘uma‘u at the summit of Kīlauea was captured during a routine helicopter overflight by HVO geologists on Thursday, July 22, 2021.
Aerial view of Halema‘uma‘u and the Kīlauea summit caldera—July 22
This wide-angle aerial view looks southeast over Kīlauea's summit caldera, with the recently active lava lake in Halema‘uma‘u visible in the lower right. On the left side of the photo, the large cliffs formed during the 2018 collapses are visible. Kīlauea Iki can be seen in the upper left. USGS photo by M. Patrick, taken on July 22, 2021.
This wide-angle aerial view looks southeast over Kīlauea's summit caldera, with the recently active lava lake in Halema‘uma‘u visible in the lower right. On the left side of the photo, the large cliffs formed during the 2018 collapses are visible. Kīlauea Iki can be seen in the upper left. USGS photo by M. Patrick, taken on July 22, 2021.
Great Salt Lake Reaches New Historic Low
USGS hydrologic technician Travis Gibson confirms Great Salt Lake water levels at the SaltAire gauge.
USGS hydrologic technician Travis Gibson confirms Great Salt Lake water levels at the SaltAire gauge.
Great Salt Lake Reaches New Historic Low
A sailboat is removed from the Great Salt Lake Marina due to low lake levels.
A sailboat is removed from the Great Salt Lake Marina due to low lake levels.
HVO geologist conducts a routine high-precision survey—Kīlauea summit
An HVO geologist conducts a routine high-precision survey of the inactive lava lake in Halema‘uma‘u, at the summit of Kīlauea volcano. Mist moving across the caldera on the morning of July 22 produced a rainbow over the lake. No significant changes have occurred in Halema‘uma‘u in recent weeks. USGS photo by M. Patrick.
An HVO geologist conducts a routine high-precision survey of the inactive lava lake in Halema‘uma‘u, at the summit of Kīlauea volcano. Mist moving across the caldera on the morning of July 22 produced a rainbow over the lake. No significant changes have occurred in Halema‘uma‘u in recent weeks. USGS photo by M. Patrick.
HVO scientist samples volcanic gas from crack—Kīlauea summit, July 22
An HVO scientist samples the gas around a crack identified as emitting elevated levels of carbon dioxide (a volcanic gas) on the down-dropped block within Kīlauea caldera. The sample will later be analyzed to determine its complete chemical composition. This work was conducted within a closed area of Hawai‘i Volcanoes National Park, with park permission.
An HVO scientist samples the gas around a crack identified as emitting elevated levels of carbon dioxide (a volcanic gas) on the down-dropped block within Kīlauea caldera. The sample will later be analyzed to determine its complete chemical composition. This work was conducted within a closed area of Hawai‘i Volcanoes National Park, with park permission.
HVO scientists measure volcanic gasses—Kīlauea caldera floor, July 22
HVO scientists walk transects along the down-dropped portion of Kīlauea caldera floor as part of a gas survey conducted on July 22.
HVO scientists walk transects along the down-dropped portion of Kīlauea caldera floor as part of a gas survey conducted on July 22.
Volcanic gas survey within Kīlauea caldera—July 22, 2021
On July 22, HVO scientists surveyed the floor of the down-dropped block within Kīlauea caldera for diffuse volcanic gas emissions. This particular part of the caldera floor subsided during Kīlauea's collapse events in 2018.
On July 22, HVO scientists surveyed the floor of the down-dropped block within Kīlauea caldera for diffuse volcanic gas emissions. This particular part of the caldera floor subsided during Kīlauea's collapse events in 2018.
Chondroma mass on the hock of a sandhill crane
Photographs from a sandhill crane (Antigone canadensis) found dead in Indiana, U.S.A. (A) There is a firm mass on the right cranial hock with a roughened black and tan surface. (B) On cut section, the mass is gelatinous, mottled light pink to gray, and extends to the joint space (arrow).
Photographs from a sandhill crane (Antigone canadensis) found dead in Indiana, U.S.A. (A) There is a firm mass on the right cranial hock with a roughened black and tan surface. (B) On cut section, the mass is gelatinous, mottled light pink to gray, and extends to the joint space (arrow).
Photomicrographs from a sandhill crane found dead in Indiana U.S.A.
Photomicrographs from a sandhill crane (Antigone canadensis) found dead in Indiana, U.S.A. (A) The mass is composed of islands of well-differentiated chondrocytes separated by fibrovascular connective tissue. There is minimal cellular pleomorphism and no mitotic figures are seen (inset).
Photomicrographs from a sandhill crane (Antigone canadensis) found dead in Indiana, U.S.A. (A) The mass is composed of islands of well-differentiated chondrocytes separated by fibrovascular connective tissue. There is minimal cellular pleomorphism and no mitotic figures are seen (inset).
Deploying SQUID-5 over Looe Key Reef
Dave Zawada (left) and Gerry Hatcher prepare to deploy the SQUID-5 off the R/V Sallenger over Looe Key, FL.
Dave Zawada (left) and Gerry Hatcher prepare to deploy the SQUID-5 off the R/V Sallenger over Looe Key, FL.
Landsat 8 visible and thermal infrared images of Yellowstone
Visible and thermal infrared images of Yellowstone acquired on July 17, 2021. In the visible image, Landsat 8 channels 4-3-2 are assigned red-green-blue colors (respectively) to simulate natural color. In thermal infrared image, bright pixels are warmer, and dark pixels are cooler. The full satellite images are clipped to the boundaries of Yellowst
Visible and thermal infrared images of Yellowstone acquired on July 17, 2021. In the visible image, Landsat 8 channels 4-3-2 are assigned red-green-blue colors (respectively) to simulate natural color. In thermal infrared image, bright pixels are warmer, and dark pixels are cooler. The full satellite images are clipped to the boundaries of Yellowst