Jim Crowley (USGS), Jeff Kargel (University of Arizona. Studying Earth as a Mars analog.
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Lake Tyrrel. Acid Lake
Jim Crowley (USGS), Jeff Kargel (University of Arizona. Studying Earth as a Mars analog.
CWSC Office - Visitor Entrance
Close-up view of visitor entrance at Building 53; the location of USGS Colorado Water Science Center.
Close-up view of visitor entrance at Building 53; the location of USGS Colorado Water Science Center.
Dome Fountain Over Fissure D of the July 21, 2007 Eruption (September 20, 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).
Lake Chandler. Acid Lake
Jim Crowley (USGS) measuring pH in the acid lake Chandler in Australia.
Jim Crowley (USGS) measuring pH in the acid lake Chandler in Australia.
Mountain Yellow-Legged Frog (Rana muscosa)
Endangered mountain yellow-legged frog (Rana muscosa).
Endangered mountain yellow-legged frog (Rana muscosa).
Mountain Yellow-Legged Frog (Rana Muscosa)
An endangered mountain yellow-legged frog (Rana muscosa).
An endangered mountain yellow-legged frog (Rana muscosa).
Tidewater Goby
Tidewater goby collected from Rodeo Lagoon in Golden Gate National Recreation Area, CA.
Tidewater goby collected from Rodeo Lagoon in Golden Gate National Recreation Area, CA.
Green Lake. Acid Lake
Jim Crowley (USGS), Nathan Bridges (JPL). Field trip to Australia to study acid lakes as Mars analogs.
Jim Crowley (USGS), Nathan Bridges (JPL). Field trip to Australia to study acid lakes as Mars analogs.
American Falls at Niagara Falls, NY
American Falls at Niagara Falls, NY
American Falls at Niagara Falls, NY
Karijini Circular Pool
Searching for life on Mars using Mars analogs in Australia. Banded Iron Formation Hamersley Basin.
Searching for life on Mars using Mars analogs in Australia. Banded Iron Formation Hamersley Basin.
Banded Iron Formation of Hamersley Range
Jim Crowley (USGS) searching for life on Mars using Mars analogs in Australia.
Jim Crowley (USGS) searching for life on Mars using Mars analogs in Australia.
When is an Earthquake not an Earthquake?
We sit down with USGS Senior Science Advisor for Earthquakes and Geologic Hazards David Applegate to talk about some of the subtle nuances and uses of seismic networks.
We sit down with USGS Senior Science Advisor for Earthquakes and Geologic Hazards David Applegate to talk about some of the subtle nuances and uses of seismic networks.
Massachusetts Seafloor
This photograph is of the seafloor off the Massachusetts coast and shows sea stars, blood stars, blood drop tunicates, mussels and barnacles on cobbles and boulders covered with bubblegum algae and red filamentous algae.
This photograph is of the seafloor off the Massachusetts coast and shows sea stars, blood stars, blood drop tunicates, mussels and barnacles on cobbles and boulders covered with bubblegum algae and red filamentous algae.
Seastars on Algae Covered Cobbles and Boulders
Digital still photograph from Massachusetts Bay near Cohasset, MA, showing seastars (Asterias sp.), blood stars (Henricia sanguinolenta), blood drop tunicates (Dendrodoa carnea), mussels, and barnacles on cobbles and boulders covered with bubblegum algae and red filamentous algae. Water depth at this location is approximately 19.6 meters.
Digital still photograph from Massachusetts Bay near Cohasset, MA, showing seastars (Asterias sp.), blood stars (Henricia sanguinolenta), blood drop tunicates (Dendrodoa carnea), mussels, and barnacles on cobbles and boulders covered with bubblegum algae and red filamentous algae. Water depth at this location is approximately 19.6 meters.
Dawn of Life
3.5 billion years old stromatolites. Searching for life on Mars using Mars analogs in Australia.
3.5 billion years old stromatolites. Searching for life on Mars using Mars analogs in Australia.
Long-term evolution of the Episode 58 lava channel
(September 8 to November 30, 2007) Within days of the onset of Episode 58 on July 21, 2008, activity localized on the easternmost eruptive fissure—Fissure D—and channelized lava began flowing to the northeast. Repeated overflows from the channel added slowly to its height, and the channel became perched up to 45 meters above the pre-existing lava surface.
(September 8 to November 30, 2007) Within days of the onset of Episode 58 on July 21, 2008, activity localized on the easternmost eruptive fissure—Fissure D—and channelized lava began flowing to the northeast. Repeated overflows from the channel added slowly to its height, and the channel became perched up to 45 meters above the pre-existing lava surface.
Massachusetts Seafloor
This photograph is of the seafloor off the Massachusetts coast and shows a lobster as well as boulders and sediment covered in seaweed, bubblegum algae and red filamentous algae.
This photograph is of the seafloor off the Massachusetts coast and shows a lobster as well as boulders and sediment covered in seaweed, bubblegum algae and red filamentous algae.
Marble Bar Chert Stained with Iron
Jim Crowley (USGS) searching for life on Mars using Mars analogs in Australia.
Jim Crowley (USGS) searching for life on Mars using Mars analogs in Australia.
Grizzly Bear Rubbing Tree and Log
This is two video clips captured at the same site from two different angles. The rub trees are on one side of the trail and the excavated log is on the other side. Bears that rub on one or more of the trees often visit the log as well.
This is two video clips captured at the same site from two different angles. The rub trees are on one side of the trail and the excavated log is on the other side. Bears that rub on one or more of the trees often visit the log as well.
Foxtail pine cones at different stages of development
This photo shows foxtail pine cones in different stages of development. The small, tightly closed purplish cones are the most recently formed, the ones on the right older but not yet opened, and the one in the center of the image has already opened and dropped its seeds, which are tucked at the base of the scales.
This photo shows foxtail pine cones in different stages of development. The small, tightly closed purplish cones are the most recently formed, the ones on the right older but not yet opened, and the one in the center of the image has already opened and dropped its seeds, which are tucked at the base of the scales.
Hazard Roundup--August 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.