(December 1, 2007, 02:01:38 to 16:01:36) On November 21, 2007—the eve of the U.S. Thanksgiving holiday—Episode 58 changed dramatically. Lava, erupting from Fissure D into a perched lava channel, found an easier path to the surface and broke out from directly over Fissure D on what was, by then, the southern flank of the channel.
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TEB effusion and partial rootless shield flank failure
(December 1, 2007, 02:01:38 to 16:01:36) On November 21, 2007—the eve of the U.S. Thanksgiving holiday—Episode 58 changed dramatically. Lava, erupting from Fissure D into a perched lava channel, found an easier path to the surface and broke out from directly over Fissure D on what was, by then, the southern flank of the channel.
Rootless Shield Flank Collapse - July 21, 2007 Eruption (December 1, 2007)
Just after midnight on July 21, 2007, a new fissure eruption broke out on the eastern flank of the Pu'u 'O'o cone (http://hvo.wr.usgs.gov/pressreleases/pr07_21_07.html).
Just after midnight on July 21, 2007, a new fissure eruption broke out on the eastern flank of the Pu'u 'O'o cone (http://hvo.wr.usgs.gov/pressreleases/pr07_21_07.html).
Preparing Water-Quality Sampling Device for Use
A USGS scientist about the collect a water sample with a DH-95 sampler (the white torpedo looking device). After sampling, another scientist takes the bottle of water and pours it into the churn. Having another scientist do this prevents contamination of the sample.
A USGS scientist about the collect a water sample with a DH-95 sampler (the white torpedo looking device). After sampling, another scientist takes the bottle of water and pours it into the churn. Having another scientist do this prevents contamination of the sample.
Taking the Long View From Space
Get caught up on the latest in land remote sensing, the future of Landsat, and more with Barbara Ryan, USGS Associate Director for Geography.
Get caught up on the latest in land remote sensing, the future of Landsat, and more with Barbara Ryan, USGS Associate Director for Geography.
Episodic spattering in the Episode 58 lava channel
(November 15, 2007, 09:00:15 to 13:00:15) Periods of overflow and levee construction at the Episode 58 lava channel were interspersed with periods when the lava level was below the channel rim. The lava surface within the lava channel commonly experienced repeated cycles of rise and fall, as shown here.
(November 15, 2007, 09:00:15 to 13:00:15) Periods of overflow and levee construction at the Episode 58 lava channel were interspersed with periods when the lava level was below the channel rim. The lava surface within the lava channel commonly experienced repeated cycles of rise and fall, as shown here.
PubTalk 11/2007 — Disasters, Dust, .... and Danger?
Using geoscience to help understand whether health risks lurk in particles produced by disasters
By Geoff Plumlee, Research Geochemist
Using geoscience to help understand whether health risks lurk in particles produced by disasters
By Geoff Plumlee, Research Geochemist
Perched Lava Channel - July 21, 2007 Eruption (November 15, 2007)
Just after midnight on July 21, 2007, a new fissure eruption broke out on the eastern flank of the Pu'u 'O'o cone (http://hvo.wr.usgs.gov/pressreleases/pr07_21_07.html).
Just after midnight on July 21, 2007, a new fissure eruption broke out on the eastern flank of the Pu'u 'O'o cone (http://hvo.wr.usgs.gov/pressreleases/pr07_21_07.html).
Be Aware of Where during Geography Awareness Week and GIS Day
We offer you a heaping helping of geography and GIS education and info. Enjoy!
We offer you a heaping helping of geography and GIS education and info. Enjoy!
Significant Potential for Undiscovered Resources in Afghanistan
We talk with USGS's Stephen Peters about the newly released preliminary assessment of non-fuel mineral resources in Afghanistan and how they're a critical part of rebuilding its natural resource sector and economic stability.
We talk with USGS's Stephen Peters about the newly released preliminary assessment of non-fuel mineral resources in Afghanistan and how they're a critical part of rebuilding its natural resource sector and economic stability.
(Trailer) Riding the Storm—Landslide Danger in San Francisco Bay Area
Video Highlights:
* A catastrophic 1982 rainstorm triggered 18,000 landslides in the Bay Area, claiming 25 lives and causing $66 million in property damage
* The combination of steep slopes, weak rocks, and intense winter storms make Bay Area uplands an ideal setting for landslides
Video Highlights:
* A catastrophic 1982 rainstorm triggered 18,000 landslides in the Bay Area, claiming 25 lives and causing $66 million in property damage
* The combination of steep slopes, weak rocks, and intense winter storms make Bay Area uplands an ideal setting for landslides
Eaton holding a slender-snouted crocodile (Mecistops cataphractus)
While surveying for African dwarf crocodiles (Osteolaemus tetraspis) on the Djidji River in Gabon’s Ivindo NP as part of my Ph.D. research (2007), Eaton pulled this 2.4 m slender-snouted crocodile (Mecistops cataphractus) from a fishing net in which it became entangled while trying to steal a fish. (credit – M. Eaton)
While surveying for African dwarf crocodiles (Osteolaemus tetraspis) on the Djidji River in Gabon’s Ivindo NP as part of my Ph.D. research (2007), Eaton pulled this 2.4 m slender-snouted crocodile (Mecistops cataphractus) from a fishing net in which it became entangled while trying to steal a fish. (credit – M. Eaton)
Sampling Acid Mine Drainage in Elk_County, PA
Sampling acid mine drainage residuals in Elk County, Pennsylvania. The USGS has pioneered a new use for these residuals that are currently a disposal challenge, using them to filter phosphorus from agricultural and municipal wastewaters.
Sampling acid mine drainage residuals in Elk County, Pennsylvania. The USGS has pioneered a new use for these residuals that are currently a disposal challenge, using them to filter phosphorus from agricultural and municipal wastewaters.
Wildfire Science: Patterns and Suppression
Most of the wildfires in Southern California are contained, but there are still things to consider after the smoke clears. USGS Research Ecologist Jon Keeley talks about wildfire patterns and the notion of suppression in the chapparal regions in Southern California.
Most of the wildfires in Southern California are contained, but there are still things to consider after the smoke clears. USGS Research Ecologist Jon Keeley talks about wildfire patterns and the notion of suppression in the chapparal regions in Southern California.
Hazard Roundup--October 2007
A roundup of the previous month's hazard-related events around the world, with some newsworthy tidbits.
A roundup of the previous month's hazard-related events around the world, with some newsworthy tidbits.
Rio Nigua at Turnpike
After heavy rains the river floods over the bridge and then for several months it will flow through the conduits under the roadway before it dries up again. The location is at 17º59"15"N, 66º17"40" and the elevation is 10 m.
After heavy rains the river floods over the bridge and then for several months it will flow through the conduits under the roadway before it dries up again. The location is at 17º59"15"N, 66º17"40" and the elevation is 10 m.
Who Do We Think We Are? Find out in This Overview of the USGS
A fearsome foursome of CoreCasters gives you the lowdown on what the USGS is all about, from science responsibilities to products to public events. Warning: This episode of CoreCast is scary informative. Happy Halloween.
A fearsome foursome of CoreCasters gives you the lowdown on what the USGS is all about, from science responsibilities to products to public events. Warning: This episode of CoreCast is scary informative. Happy Halloween.
PubTalk 10/2007 — Fire As An Ecosystem Process
Past, Present, And Future
By Jon E. Keeley, Research Ecologist
Past, Present, And Future
By Jon E. Keeley, Research Ecologist
The Science of Wildfires
We talk to USGS wildland fire expert, Erik Berg, about the current California wildfires and what the USGS is doing to help, how the public can keep up to date on what's happening with wildfires, and more.
We talk to USGS wildland fire expert, Erik Berg, about the current California wildfires and what the USGS is doing to help, how the public can keep up to date on what's happening with wildfires, and more.
Trinity River near Rosser
Trinity River at the USGS gage 08062500, Trinity River near Rosser, TX
Trinity River at the USGS gage 08062500, Trinity River near Rosser, TX
Earth Science Week, Continued: You're About to get Schooled
In the fifth and final episode of our Earth Science Week coverage, USGS Education Coordinator Bob Ridky tells us why science education is important for everybody, why kids need to get outside, and more.
In the fifth and final episode of our Earth Science Week coverage, USGS Education Coordinator Bob Ridky tells us why science education is important for everybody, why kids need to get outside, and more.
Marmot Dam Removal, Sandy River, Oregon: Time-Lapse
The USGS put together time-lapse video of the breach of the Marmot Dam, on the Sandy River in Oregon. Hydrology experts from the USGS Oregon Water Science Center and the USGS Cascades Volcano Observatory are studying this removal, the largest planned removal in the Pacific Northwest thus far.
The USGS put together time-lapse video of the breach of the Marmot Dam, on the Sandy River in Oregon. Hydrology experts from the USGS Oregon Water Science Center and the USGS Cascades Volcano Observatory are studying this removal, the largest planned removal in the Pacific Northwest thus far.