Mountain big sagebrush - or Artemisia tridentata ssp. vaseyana - is a sub-species of big sagebrush that is found in primarily at higher elevation and colder, drier sites between the Rocky Mountains and the Cascades and Sierra Nevada.
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Wyoming Big Sagebrush Community Near Winnemucca, Nevada
Mountain big sagebrush - or Artemisia tridentata ssp. vaseyana - is a sub-species of big sagebrush that is found in primarily at higher elevation and colder, drier sites between the Rocky Mountains and the Cascades and Sierra Nevada.
Lava Pond Spattering and Overflow at the MLK Vent
(May 10, 2005, 16:20:29 to 18:30:29) After the collapse of the main spatter cone at the MLK vent (see movies "Spatter cone collapse at the MLK vent"), a small lava pond was visible within the new pit. At times, the level of the lava pond rose abruptly, overflowing the rim of the pit.
(May 10, 2005, 16:20:29 to 18:30:29) After the collapse of the main spatter cone at the MLK vent (see movies "Spatter cone collapse at the MLK vent"), a small lava pond was visible within the new pit. At times, the level of the lava pond rose abruptly, overflowing the rim of the pit.
Pond Overflow at MLK Vent (May 10, 2005)
After the collapse of the main spatter cone at the Martin Luther King (MLK) vent on May 2, 2005, a small lava pond was visible within the new pit. Over the following weeks, the level of the lava pond often changed abruptly, resulting in overflows and spattering along the edge of the pond.
After the collapse of the main spatter cone at the Martin Luther King (MLK) vent on May 2, 2005, a small lava pond was visible within the new pit. Over the following weeks, the level of the lava pond often changed abruptly, resulting in overflows and spattering along the edge of the pond.
Bobcat Tracking
A Vermont Unit researcher outfits a captured bobcat with a lightweight GPS collar that will record its daily movements.The collar will provide information on bobcat home range size, habitat use, and movements.
A Vermont Unit researcher outfits a captured bobcat with a lightweight GPS collar that will record its daily movements.The collar will provide information on bobcat home range size, habitat use, and movements.
Bobcat Tracking
A Vermont Unit researcher outfits a captured bobcat with a lightweight GPS collar that will record its daily movements.The collar will provide information on bobcat home range size, habitat use, and movements.
A Vermont Unit researcher outfits a captured bobcat with a lightweight GPS collar that will record its daily movements.The collar will provide information on bobcat home range size, habitat use, and movements.
Drought and Beetle-Killed Piñon Pines in Arizona
Drought and beetle-killed piñon pines in Walnut Canyon National Monument near Flagstaff, Arizona, amid a few surviving trees. Forest drought stress is strongly correlated with tree mortality from poor growth, bark beetle outbreaks, and high-severity fire.
Drought and beetle-killed piñon pines in Walnut Canyon National Monument near Flagstaff, Arizona, amid a few surviving trees. Forest drought stress is strongly correlated with tree mortality from poor growth, bark beetle outbreaks, and high-severity fire.
Drought and Beetle-Killed Piñon Pines in Arizona
Drought and beetle-killed piñon pines in Walnut Canyon National Monument near Flagstaff, Arizona, amid some surviving trees. Forest drought stress is highly correlated with mortality from poor growth, bark beetle outbreaks, and high-severity fire.
Drought and beetle-killed piñon pines in Walnut Canyon National Monument near Flagstaff, Arizona, amid some surviving trees. Forest drought stress is highly correlated with mortality from poor growth, bark beetle outbreaks, and high-severity fire.
Spatter Cone Collapse at MLK Vent
(May 2, 2005, 05:30:04 to 07:30:02) During spring 2005, activity at the MLK vent, on the southwestern flank of the Pu‘u ‘Ō‘ō cone, changed from a period of construction to one of destruction. This was highlighted by the collapse of the main MLK spatter cone.
(May 2, 2005, 05:30:04 to 07:30:02) During spring 2005, activity at the MLK vent, on the southwestern flank of the Pu‘u ‘Ō‘ō cone, changed from a period of construction to one of destruction. This was highlighted by the collapse of the main MLK spatter cone.
Spatter Cone Collapse at MLK Vent
(May 2, 2005, 02:30:28 to 07:30:37) The spatter cone collapse described in the movie below was also recorded by a time-lapse camera on the west flank of the Pu‘u ‘Ō‘ō cone. This camera was located about 70 meters from the MLK vent and recorded two pulses of lava effusion from the vent before collapse.
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(May 2, 2005, 02:30:28 to 07:30:37) The spatter cone collapse described in the movie below was also recorded by a time-lapse camera on the west flank of the Pu‘u ‘Ō‘ō cone. This camera was located about 70 meters from the MLK vent and recorded two pulses of lava effusion from the vent before collapse.
By
A Hermit Thrush on the Nest in Arizona
Hermit thrushes are a songbird species that was strongly affected by plant community changes in mountains because of reduced snowpack and cascading ecological effects, according to a USGS Montana Cooperative Wildlife Research Unit study.
Hermit thrushes are a songbird species that was strongly affected by plant community changes in mountains because of reduced snowpack and cascading ecological effects, according to a USGS Montana Cooperative Wildlife Research Unit study.
Acadia Waterfall
Hadlock Brook, in Acadia National Park, is a small watershed that was monitored by the USGS from 1999 to 2006. The Hadlock Falls is a popular spot for a break on one of the many scenic trails through the park. The USGS gaging station was approximately 100 ft above the falls.
Hadlock Brook, in Acadia National Park, is a small watershed that was monitored by the USGS from 1999 to 2006. The Hadlock Falls is a popular spot for a break on one of the many scenic trails through the park. The USGS gaging station was approximately 100 ft above the falls.
Cone Collapse at MLK Vent (May 2, 2005)
During Spring 2005, activity at the Martin Luther King (MLK) vent, an eruptive vent on the southwestern flank of the Pu'u 'O'o cone, changed from a period of construction to one of destruction. This was highlighted by the collapse of the main MLK spatter cone.
During Spring 2005, activity at the Martin Luther King (MLK) vent, an eruptive vent on the southwestern flank of the Pu'u 'O'o cone, changed from a period of construction to one of destruction. This was highlighted by the collapse of the main MLK spatter cone.
Mount St. Helens: Instrumentation and Dome Growth, April - July 2005.
Lava spines continue to emerge onto the crater floor of Mount St. Helens in 2005. By April 2005, spine 4 is broken and pushed away by spine 5. The nearly vertical spine 5 has a smooth, gouge-covered surface, growing at an average rate of 4.3 meters per day.
Lava spines continue to emerge onto the crater floor of Mount St. Helens in 2005. By April 2005, spine 4 is broken and pushed away by spine 5. The nearly vertical spine 5 has a smooth, gouge-covered surface, growing at an average rate of 4.3 meters per day.
Homes along the edge of the coast in Isla Vista, California
Homes along the edge of the coast in Isla Vista, California, Santa Barbara County, face a short lifespan because of eroding bluffs that support them.
Homes along the edge of the coast in Isla Vista, California, Santa Barbara County, face a short lifespan because of eroding bluffs that support them.
PubTalk — Earthquakes at the USGS
Blowing the Lid off Seismic Science for 40 Years
Ross Stein, representing the USGS Earthquake Hazards Team
Blowing the Lid off Seismic Science for 40 Years
Ross Stein, representing the USGS Earthquake Hazards Team
Biosolids from a wastewater treatment plant were loaded onto trucks
Biosolids from a wastewater treatment plant were loaded onto trucks for transport to the field. A team of USGS scientists and their colleagues collected samples of biosolids for analysis from freshly exposed surfaces created by the machinery used to load the biosolids onto trucks.
Biosolids from a wastewater treatment plant were loaded onto trucks for transport to the field. A team of USGS scientists and their colleagues collected samples of biosolids for analysis from freshly exposed surfaces created by the machinery used to load the biosolids onto trucks.
Moving Shadows
Picture of a hydrographer's shadow as flood water is measured from a cablecar.
Picture of a hydrographer's shadow as flood water is measured from a cablecar.
Afghanistan's Colorful Mountain Ranges
Colorful mountains of Sar-e-Pul hint of copper (green) and iron (red).
Colorful mountains of Sar-e-Pul hint of copper (green) and iron (red).
Ash collection from east Crater Glacier on Mount St. Helens with a ...
Ash collection from east Crater Glacier on Mount St. Helens with a dredge attached to a helicopter cable. Ash is analyzed to help scientists understand eruption characteristics.
Ash collection from east Crater Glacier on Mount St. Helens with a dredge attached to a helicopter cable. Ash is analyzed to help scientists understand eruption characteristics.
Butterfly and Spider Specimen Souveniors
Pinned butterfly specimens and a spider sold as souveniors in a market.
Pinned butterfly specimens and a spider sold as souveniors in a market.
Butterfly and Spider Specimen Souveniors
Pinned butterfly specimens and a spider sold as souveniors in a market.
Pinned butterfly specimens and a spider sold as souveniors in a market.