Stacked lava flows are visible in the wall of the down-dropped block, which was exposed during the Kīlauea summit collapse events in 2018. A small exposure of lighter-colored volcanic ash, likely the Keanakāko‘i tephra deposits erupted during Kīlauea's last explosive phase several hundred years ago, is visible beneath tens of meters (yards) of lava flows.
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Kīlauea caldera gas mapping—August 3, 2021
Stacked lava flows are visible in the wall of the down-dropped block, which was exposed during the Kīlauea summit collapse events in 2018. A small exposure of lighter-colored volcanic ash, likely the Keanakāko‘i tephra deposits erupted during Kīlauea's last explosive phase several hundred years ago, is visible beneath tens of meters (yards) of lava flows.
Kīlauea caldera gas mapping—August 3, 2021
HVO scientists continue their survey of Kīlauea caldera floor, including the down-dropped block, for diffuse volcanic gas emissions. This photo shows a large crack, on a portion of the caldera floor that subsided in 2018, that is emitting volcanic gas and steam.
HVO scientists continue their survey of Kīlauea caldera floor, including the down-dropped block, for diffuse volcanic gas emissions. This photo shows a large crack, on a portion of the caldera floor that subsided in 2018, that is emitting volcanic gas and steam.
Monthly update of activity at Yellowstone Volcano for July 2021
Monthly update of activity at Yellowstone Volcano for July 2021During July, Yellowstone caught everyone’s attention with 1,000+ earthquakes located in seven distinct earthquake swarms. The largest swarm occurred beneath Yellowstone Lake and had 764 earthquakes, the largest of which was a Magnitude 3.6.
Monthly update of activity at Yellowstone Volcano for July 2021
Monthly update of activity at Yellowstone Volcano for July 2021During July, Yellowstone caught everyone’s attention with 1,000+ earthquakes located in seven distinct earthquake swarms. The largest swarm occurred beneath Yellowstone Lake and had 764 earthquakes, the largest of which was a Magnitude 3.6.
Calwood Fire, Calwood post-fire debris-flow monitoring station, July 31, 2021
Calwood Fire, Calwood post-fire debris-flow monitoring station, July 31, 2021Calwood burn area, Calwood post-fire debris-flow monitoring station video footage from rainstorm on July 31, 2021 from 14:06 MDT to 14:13:05 MDT.
Calwood Fire, Calwood post-fire debris-flow monitoring station, July 31, 2021
Calwood Fire, Calwood post-fire debris-flow monitoring station, July 31, 2021Calwood burn area, Calwood post-fire debris-flow monitoring station video footage from rainstorm on July 31, 2021 from 14:06 MDT to 14:13:05 MDT.
Calwood Fire, Heil Ranch post-fire debris-flow monitoring station, July 31, 2021
Calwood Fire, Heil Ranch post-fire debris-flow monitoring station, July 31, 2021Calwood burn area, Heil Ranch post-fire debris-flow monitoring station video footage from rainstorm on July 31, 2021 from 14:07 MDT to 14:13:11 MDT.
Calwood Fire, Heil Ranch post-fire debris-flow monitoring station, July 31, 2021
Calwood Fire, Heil Ranch post-fire debris-flow monitoring station, July 31, 2021Calwood burn area, Heil Ranch post-fire debris-flow monitoring station video footage from rainstorm on July 31, 2021 from 14:07 MDT to 14:13:11 MDT.
Close up view of inactive western fissure spatter cone in Halema‘uma‘u
Close up view of inactive western fissure spatter cone in Halema‘uma‘uEruptive activity paused within Halema‘uma‘u, at Kīlauea's summit, a bit more than 2 months ago. In that time, the spatter cone at the western fissure complex has slowly degraded due to numerous small scale collapses, leaving a debris apron (fresh looking rubble) and exposing the interior of the spatter cone. USGS photo by N. Deligne.
Close up view of inactive western fissure spatter cone in Halema‘uma‘u
Close up view of inactive western fissure spatter cone in Halema‘uma‘uEruptive activity paused within Halema‘uma‘u, at Kīlauea's summit, a bit more than 2 months ago. In that time, the spatter cone at the western fissure complex has slowly degraded due to numerous small scale collapses, leaving a debris apron (fresh looking rubble) and exposing the interior of the spatter cone. USGS photo by N. Deligne.
R/V Sallenger tows SQUID-5
The R/V Sallenger tows the SQUID-5 over Looe Key reef with a NOAA Sanctuary boat in the background patrolling the Looe Key area to warn recreational vessels of the ongoing research activity.
The R/V Sallenger tows the SQUID-5 over Looe Key reef with a NOAA Sanctuary boat in the background patrolling the Looe Key area to warn recreational vessels of the ongoing research activity.
View of Halema‘uma‘u at Kīlauea summit - July 30, 2021
View of Halema‘uma‘u at Kīlauea summit - July 30, 2021A view looking north into Halema‘uma‘u on July 30, 2021. Although eruptive activity has paused at the summit of Kīlauea, HVO geologists still monitor the lava lake and summit area weekly. Lava lake surface depths remain the same since mid to late May when active lava was last observed at the surface. USGS photo by N. Deligne.
View of Halema‘uma‘u at Kīlauea summit - July 30, 2021
View of Halema‘uma‘u at Kīlauea summit - July 30, 2021A view looking north into Halema‘uma‘u on July 30, 2021. Although eruptive activity has paused at the summit of Kīlauea, HVO geologists still monitor the lava lake and summit area weekly. Lava lake surface depths remain the same since mid to late May when active lava was last observed at the surface. USGS photo by N. Deligne.
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.
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
Chany Huddleston and Ross Clyma prepare QBoat at Schoharie CreekPhoto Contest Winner | September 2021 | Where We Work
Chany Huddleston and Ross Clyma prepare QBoat at Schoharie Creek
Chany Huddleston and Ross Clyma prepare QBoat at Schoharie Creek
Chany Huddleston and Ross Clyma prepare QBoat at Schoharie CreekPhoto Contest Winner | September 2021 | Where We Work
Chany Huddleston and Ross Clyma prepare QBoat at Schoharie Creek
Contrib. of Rock-Mass Strength to Topographic Form and Post-Fire Eros.
Contrib. of Rock-Mass Strength to Topographic Form and Post-Fire Eros.Rock-mass strength is typically assumed to influence geomorphic processes by setting the erodibility of landscapes. However, the contribution of rock-mass strength to topographic form is often overlooked, largely because rock-mass strength is challenging to quantify over the broad spatial scales relevant to geomorphology.
Contrib. of Rock-Mass Strength to Topographic Form and Post-Fire Eros.
Contrib. of Rock-Mass Strength to Topographic Form and Post-Fire Eros.Rock-mass strength is typically assumed to influence geomorphic processes by setting the erodibility of landscapes. However, the contribution of rock-mass strength to topographic form is often overlooked, largely because rock-mass strength is challenging to quantify over the broad spatial scales relevant to geomorphology.
Kīlauea caldera gas mapping - July 28, 2021 — Kīlauea
Kīlauea caldera gas mapping - July 28, 2021 — KīlaueaWhile 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.
Kīlauea caldera gas mapping - July 28, 2021 — Kīlauea
Kīlauea caldera gas mapping - July 28, 2021 — KīlaueaWhile 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.
Kīlauea caldera gas mapping - July 28, 2021 — Kīlauea
Kīlauea caldera gas mapping - July 28, 2021 — KīlaueaA 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
Kīlauea caldera gas mapping - July 28, 2021 — KīlaueaA 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.
Updating NHD Infrastructure with Elevation Derived Hydrography—Alaska
Updating NHD Infrastructure with Elevation Derived Hydrography—AlaskaTopic: Building the infrastructure for updating the National Hydrography Datasets with Elevation-Derived Hydrography – Alaska leads the way
Presenters: Steve Aichele, Geographer, USGS User Engagement Hydrography Focus Area Lead, and Amanda Lowe, Supervisory Geographer, USGS Topographic Applied Research Section Chief
Updating NHD Infrastructure with Elevation Derived Hydrography—Alaska
Updating NHD Infrastructure with Elevation Derived Hydrography—AlaskaTopic: Building the infrastructure for updating the National Hydrography Datasets with Elevation-Derived Hydrography – Alaska leads the way
Presenters: Steve Aichele, Geographer, USGS User Engagement Hydrography Focus Area Lead, and Amanda Lowe, Supervisory Geographer, USGS Topographic Applied Research Section Chief
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
Eyes on Earth Episode 55 - Urban Heat Islands of New York
Eyes on Earth Episode 55 - Urban Heat Islands of New YorkUrban heat islands occur in areas containing more impervious surfaces and fewer natural environments. The day and night surface temperature is higher in urban heat islands than in surrounding areas. During heat waves, this can lead to greater numbers of heat-related illnesses and deaths.
Eyes on Earth Episode 55 - Urban Heat Islands of New York
Eyes on Earth Episode 55 - Urban Heat Islands of New YorkUrban heat islands occur in areas containing more impervious surfaces and fewer natural environments. The day and night surface temperature is higher in urban heat islands than in surrounding areas. During heat waves, this can lead to greater numbers of heat-related illnesses and deaths.
Ferromanganese Nodules—2021 North Atlantic Stepping Stones Exped. (AD)
Ferromanganese Nodules—2021 North Atlantic Stepping Stones Exped. (AD)During a recent dive on the New England Seamount chain off the North Atlantic coast, researchers aboard the NOAA Ocean Exploration Expedition, North Atlantic Stepping Stones, discovered a marine geological feature known as a ferromanganese (Fe-Mn) nodule field in the saddle between two peaks of Gosnold Seamount.
Ferromanganese Nodules—2021 North Atlantic Stepping Stones Exped. (AD)
Ferromanganese Nodules—2021 North Atlantic Stepping Stones Exped. (AD)During a recent dive on the New England Seamount chain off the North Atlantic coast, researchers aboard the NOAA Ocean Exploration Expedition, North Atlantic Stepping Stones, discovered a marine geological feature known as a ferromanganese (Fe-Mn) nodule field in the saddle between two peaks of Gosnold Seamount.
Ferromanganese Nodules—2021 North Atlantic Stepping Stones Expedition
Ferromanganese Nodules—2021 North Atlantic Stepping Stones ExpeditionDuring a recent dive on the New England Seamount chain off the North Atlantic coast, researchers aboard the NOAA Ocean Exploration Expedition, North Atlantic Stepping Stones, discovered a marine geological feature known as a ferromanganese (Fe-Mn) nodule field in the saddle between two peaks of Gosnold Seamount.
Ferromanganese Nodules—2021 North Atlantic Stepping Stones Expedition
Ferromanganese Nodules—2021 North Atlantic Stepping Stones ExpeditionDuring a recent dive on the New England Seamount chain off the North Atlantic coast, researchers aboard the NOAA Ocean Exploration Expedition, North Atlantic Stepping Stones, discovered a marine geological feature known as a ferromanganese (Fe-Mn) nodule field in the saddle between two peaks of Gosnold Seamount.
Maintenance of volcano monitoring webcam—Kīlauea summit
Maintenance of volcano monitoring webcam—Kīlauea summitAn HVO geologist conducts maintenance on the S1cam web camera located along the southern rim of Halema‘uma‘u, at the summit of Kīlauea.
Maintenance of volcano monitoring webcam—Kīlauea summit
Maintenance of volcano monitoring webcam—Kīlauea summitAn 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