Outbreaks of native bark beetles can lead to conspicuous changes in a forest landscape. They’ve been present for thousands of years with occasional outbreaks, but there’s a lot we don’t yet understand about them. Exactly when and where have outbreaks occurred? How severe were they? What happened to the forest afterward?
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Outbreaks of native bark beetles can lead to conspicuous changes in a forest landscape. They’ve been present for thousands of years with occasional outbreaks, but there’s a lot we don’t yet understand about them. Exactly when and where have outbreaks occurred? How severe were they? What happened to the forest afterward?
I Am A...Volcanologist
Welcome to the “I Am A..." series, a whiteboard animation video series highlighting USGS careers.
Welcome to the “I Am A..." series, a whiteboard animation video series highlighting USGS careers.
[V1] Kīlauea caldera views
Live view of Kīlauea caldera, from the northwest rim of the caldera [V1cam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.
Disclaimer
Live view of Kīlauea caldera, from the northwest rim of the caldera [V1cam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.
Disclaimer
Activity at the west vent and lava lake in Halema‘uma‘u
Eruptive activity on the west side of HALMEMAUMAU crater, Kīlauea summit, on December 20. Audible bubble bursts from the west vent (lower right) produced brown-tinted gas plumes with entrained lava fragments. The bursts also created pressure waves that displaced the white steam.
Eruptive activity on the west side of HALMEMAUMAU crater, Kīlauea summit, on December 20. Audible bubble bursts from the west vent (lower right) produced brown-tinted gas plumes with entrained lava fragments. The bursts also created pressure waves that displaced the white steam.
Volcano Awareness Month 2022 Short Feature — The olivine time capsule
Olivine—the green mineral found in Hawaiian lavas—and its chemistry can tell us a lot about how, when, and where magmas move inside volcanoes before they erupt. Join Hawaiian Volcano Observatory geologist Kendra J.
Olivine—the green mineral found in Hawaiian lavas—and its chemistry can tell us a lot about how, when, and where magmas move inside volcanoes before they erupt. Join Hawaiian Volcano Observatory geologist Kendra J.
Eyes on Earth Episode 63 – ECOSTRESS and Post-Fire Recovery
Fires can be destructive or healthy for a landscape—often both. Fires have grown larger and more destructive in recent years, though, thanks to human activity, climate change, and a host of other factors. Satellite data helps us to map and monitor fire activity, but the study of post-fire plant life using remote sensing data goes further than fire mapping.
Fires can be destructive or healthy for a landscape—often both. Fires have grown larger and more destructive in recent years, though, thanks to human activity, climate change, and a host of other factors. Satellite data helps us to map and monitor fire activity, but the study of post-fire plant life using remote sensing data goes further than fire mapping.
USGS responds to busy 2021 Atlantic hurricane Season
The 2021 Atlantic hurricane season was the third most-active season on record. The USGS deployed crews and scientists across the country to provide science and resources to emergency managers.
The 2021 Atlantic hurricane season was the third most-active season on record. The USGS deployed crews and scientists across the country to provide science and resources to emergency managers.
Ridge-to-Reef and Icefield-to-Ocean: Collaborative Research in Extreme Environments
Steep watersheds with dramatic environmental gradients are common features of both the Pacific Islands and Southeast Alaska.
Steep watersheds with dramatic environmental gradients are common features of both the Pacific Islands and Southeast Alaska.
USGS responds to busy 2021 Atlantic hurricane Season (audio described)
The 2021 Atlantic hurricane season was the third most-active season on record. The USGS deployed crews and scientists across the country to provide science and resources to emergency managers.
The 2021 Atlantic hurricane season was the third most-active season on record. The USGS deployed crews and scientists across the country to provide science and resources to emergency managers.
Yellowstone's ups and downs explained in this monthly update of activity at Yellowstone Volcano (December 1, 2021)
linkSome people have characterized the seasonal rise and fall of Yellowstone as being like breathing. During the summer there is a little pause in the overall trend of subsidence and sometimes even a short episode of slight uplift. The trend reverses in early winter.
Yellowstone's ups and downs explained in this monthly update of activity at Yellowstone Volcano (December 1, 2021)
linkSome people have characterized the seasonal rise and fall of Yellowstone as being like breathing. During the summer there is a little pause in the overall trend of subsidence and sometimes even a short episode of slight uplift. The trend reverses in early winter.
Eyes on Earth Episode 62 - Landsat 9 Launch Part 3
For our third and final episode of Eyes on Earth from the September launch of Landsat 9, we hear from Virginia Norwood. She blazed a trail for women in remote sensing in the 1960s and 70s while working for Hughes Aircraft, a contractor for NASA.
For our third and final episode of Eyes on Earth from the September launch of Landsat 9, we hear from Virginia Norwood. She blazed a trail for women in remote sensing in the 1960s and 70s while working for Hughes Aircraft, a contractor for NASA.
Halema‘uma‘u west vent lava pond with koa‘e kea bird
Lava continues to erupt from a perched lava pond within the west vent of Halema‘uma‘u crater at the summit of Kīlauea. This video shows nearly continuous spatter bursts through the pond and a roiling and sloshing pond surface. At about 43 seconds into the video, a white-trailed tropicbird (koa‘e kea) flies through the frame.
Lava continues to erupt from a perched lava pond within the west vent of Halema‘uma‘u crater at the summit of Kīlauea. This video shows nearly continuous spatter bursts through the pond and a roiling and sloshing pond surface. At about 43 seconds into the video, a white-trailed tropicbird (koa‘e kea) flies through the frame.
Image of the Week - Historic Lows at Lake Powell
Lake Powell on the border of Utah and Arizona supplies water to millions across the southwestern United States.
Lake Powell on the border of Utah and Arizona supplies water to millions across the southwestern United States.
PubTalk-11/2021: Busting Myths About One of the Largest Volcanic Systems in the World - The Top 10 Misconceptions about Yellowstone Volcanism
linkBusting Myths About One of the Largest Volcanic Systems in the World - The Top 10 Misconceptions about Yellowstone Volcanism
By Michael Poland, USGS Scientist-in-charge, Yellowstone Volcano Observatory
PubTalk-11/2021: Busting Myths About One of the Largest Volcanic Systems in the World - The Top 10 Misconceptions about Yellowstone Volcanism
linkBusting Myths About One of the Largest Volcanic Systems in the World - The Top 10 Misconceptions about Yellowstone Volcanism
By Michael Poland, USGS Scientist-in-charge, Yellowstone Volcano Observatory
I Am A...Disease Ecologist
Welcome to the "I Am A..." series, a whiteboard animation video series highlighting USGS careers.
Welcome to the "I Am A..." series, a whiteboard animation video series highlighting USGS careers.
Eyes on Earth Episode 61 - Landsat 9 Launch Part 2
Hundreds of scientists, officials, international representatives, and others witnessed the launch of Landsat 9 on September 27, 2021, from a handful of viewing sites around Santa Barbara County, California.
Hundreds of scientists, officials, international representatives, and others witnessed the launch of Landsat 9 on September 27, 2021, from a handful of viewing sites around Santa Barbara County, California.
Overflow of a perched levee—Halema‘uma‘u, Kīlauea summit
Lava continues to erupt from the west vent in Halema‘uma‘u, and supply the lava lake through a spillway in the spatter cone. On November 12, a small overflow of the perched lava lake levee was visible from the western crater rim. Overflows are an important process for building up perched levees, as they help add height and stability.
Lava continues to erupt from the west vent in Halema‘uma‘u, and supply the lava lake through a spillway in the spatter cone. On November 12, a small overflow of the perched lava lake levee was visible from the western crater rim. Overflows are an important process for building up perched levees, as they help add height and stability.
Lava sloshing and spattering in west vent in Halema‘uma‘u crater at Kīlauea volcano
Lava continues to erupt from the west vent in Halema‘uma‘u, and supply the lava lake through a spillway in the spatter cone. On November 9, a close-up view of the west vent shows spatter bursting and sloshing within the cone. Spatter was thrown about 6–9 m (20–30 ft) above the pond surface, occasionally depositing spatter onto the rim of the cone.
Lava continues to erupt from the west vent in Halema‘uma‘u, and supply the lava lake through a spillway in the spatter cone. On November 9, a close-up view of the west vent shows spatter bursting and sloshing within the cone. Spatter was thrown about 6–9 m (20–30 ft) above the pond surface, occasionally depositing spatter onto the rim of the cone.
Image of the Week - Landsat 9 First Images!
Landsat 9 launched into space on September 27th, 2021. The "first light" images arrived on October 31st. On that day the satellite captured: algal blooms in Lake Erie, the glaciers of the Himalayas, bush fires in Australia's Eucalypt Woodlands, coastal communities on the Florida panhandle, and deserts, mountains and mesas across the Navajo Nation.
Landsat 9 launched into space on September 27th, 2021. The "first light" images arrived on October 31st. On that day the satellite captured: algal blooms in Lake Erie, the glaciers of the Himalayas, bush fires in Australia's Eucalypt Woodlands, coastal communities on the Florida panhandle, and deserts, mountains and mesas across the Navajo Nation.
TNMCorps Mapping Challenge: Cemeteries in Western TN as of 11/04/21
A before-and-after image showing the change in edits between 10/28/21 and 11/04/21. Volunteers edited over 400 points during this timeframe (public domain).
A before-and-after image showing the change in edits between 10/28/21 and 11/04/21. Volunteers edited over 400 points during this timeframe (public domain).
TNMCorps Mapping Challenge: City/Town Halls in TX as of 11/04/21
A before-and-after image showing the change in edits between 10/28/21 and 11/04/21. This challenge is now finished (public domain).
A before-and-after image showing the change in edits between 10/28/21 and 11/04/21. This challenge is now finished (public domain).