PubTalk 8/2007 — Dark Holes in Muir's "Range of Light"
PubTalk 8/2007 — Dark Holes in Muir's "Range of Light"Insights from southern Sierra Nevada caves and karst
By John C. Tinsley, Geologist
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PubTalk 8/2007 — Dark Holes in Muir's "Range of Light"
PubTalk 8/2007 — Dark Holes in Muir's "Range of Light"
PubTalk 8/2007 — Dark Holes in Muir's "Range of Light"Insights from southern Sierra Nevada caves and karst
By John C. Tinsley, Geologist
Black Bear Cub Rubbing on a Tree
Black bear cub awkwardly rubs on a bear rub tree regularly used by bears in Glacier National Park.
Black bear cub awkwardly rubs on a bear rub tree regularly used by bears in Glacier National Park.
Grizzly Bear with Cubs Charges Wolf
A wolf feeds on a road-killed elk carcass in the morning. A grizzly bear with two cubs feeds on the carcass in the evening. A grizzly bear will chuff and pop its jaw when it feels threatened. Sometimes it will also charge at the threat, usually veering off or stopping short -- a bluff charge.
A wolf feeds on a road-killed elk carcass in the morning. A grizzly bear with two cubs feeds on the carcass in the evening. A grizzly bear will chuff and pop its jaw when it feels threatened. Sometimes it will also charge at the threat, usually veering off or stopping short -- a bluff charge.
Looking down the channel of Fissure D
Looking down the channel of Fissure D
Looking down the channel of Fissure D
PubTalk 7/2007 — Plate Tectonics in Action
Exploring the Earth with the new edition of This Dynamic Planet map and Web site
By Robert Tilling, Volcanologist, and Stephen Kirby, Earthquake Geophysicist
Exploring the Earth with the new edition of This Dynamic Planet map and Web site
By Robert Tilling, Volcanologist, and Stephen Kirby, Earthquake Geophysicist
Collapse and refilling of Pu‘u ‘Ō‘ō crater
(June 10 to July 25, 2007) During June 17–19, 2007, an intrusion into Kīlauea's upper east rift zone (Episode 56) led to the cessation of eruptive activity at Pu‘u ‘Ō‘ō and the collapse of the Pu‘u ‘Ō‘ō crater floor (Poland and others, 2008).
(June 10 to July 25, 2007) During June 17–19, 2007, an intrusion into Kīlauea's upper east rift zone (Episode 56) led to the cessation of eruptive activity at Pu‘u ‘Ō‘ō and the collapse of the Pu‘u ‘Ō‘ō crater floor (Poland and others, 2008).
Refilling of Pu‘u ‘Ō‘ō crater
(July 13, 2007, 14:00:30 to 21:00:36) Episode 57 was driven by the eruption of lava from two vents—one on the west-central part of the crater floor and the other on the eastern side of the crater.
(July 13, 2007, 14:00:30 to 21:00:36) Episode 57 was driven by the eruption of lava from two vents—one on the west-central part of the crater floor and the other on the eastern side of the crater.
Refilling of Pu'u 'O'o Crater (July 13, 2007)
On June 17-19, 2007, and intrusion into Kilauea's upper east rift zone led to the cessation of eruptive activity at Pu'u 'O'o and the collapse of the Pu'u 'O'o crater floor.
On June 17-19, 2007, and intrusion into Kilauea's upper east rift zone led to the cessation of eruptive activity at Pu'u 'O'o and the collapse of the Pu'u 'O'o crater floor.
Refilling of Pu‘u ‘Ō‘ō crater
The refilling of Pu‘u ‘Ō‘ō during Episode 57 was driven by the eruption of lava from two vents—one on the west-central part of the crater floor (to the right) and the other on the eastern side of the crater (to the left). This movie shows the competing interaction between flows from these two vents for a period of several hours on July 8.
The refilling of Pu‘u ‘Ō‘ō during Episode 57 was driven by the eruption of lava from two vents—one on the west-central part of the crater floor (to the right) and the other on the eastern side of the crater (to the left). This movie shows the competing interaction between flows from these two vents for a period of several hours on July 8.
Refilling of Pu'u 'O'o Crater (July 8, 2007)
On June 17-19, 2007, and intrusion into Kilauea's upper east rift zone led to the cessation of eruptive activity at Pu'u 'O'o and the collapse of the Pu'u 'O'o crater floor.
On June 17-19, 2007, and intrusion into Kilauea's upper east rift zone led to the cessation of eruptive activity at Pu'u 'O'o and the collapse of the Pu'u 'O'o crater floor.
Lava lake draining event during Pu‘u ‘Ō‘ō refilling
Lava lake draining event during Pu‘u ‘Ō‘ō refilling(July 5, 2007, 23:00:06 to July 6, 2007, 09:00:06) With the resumption of eruptive activity at Pu‘u ‘Ō‘ō on July 1, 2007 (Episode 57), a lava lake, fed by two vents, quickly began to form within the Pu‘u ‘Ō‘ō crater. The vent seen here was located on the eastern side of the crater.
Lava lake draining event during Pu‘u ‘Ō‘ō refilling
Lava lake draining event during Pu‘u ‘Ō‘ō refilling(July 5, 2007, 23:00:06 to July 6, 2007, 09:00:06) With the resumption of eruptive activity at Pu‘u ‘Ō‘ō on July 1, 2007 (Episode 57), a lava lake, fed by two vents, quickly began to form within the Pu‘u ‘Ō‘ō crater. The vent seen here was located on the eastern side of the crater.
Drainback Event During Refilling of Pu'u 'O'o Crater (July 5-6, 2007)
Drainback Event During Refilling of Pu'u 'O'o Crater (July 5-6, 2007)On June 17-19, 2007, and intrusion into Kilauea's upper east rift zone led to the cessation of eruptive activity at Pu'u 'O'o and the collapse of the Pu'u 'O'o crater floor.
Drainback Event During Refilling of Pu'u 'O'o Crater (July 5-6, 2007)
Drainback Event During Refilling of Pu'u 'O'o Crater (July 5-6, 2007)On June 17-19, 2007, and intrusion into Kilauea's upper east rift zone led to the cessation of eruptive activity at Pu'u 'O'o and the collapse of the Pu'u 'O'o crater floor.
PubTalk 6/2007 — Adventures in Southwest Geology
Exploring the colorful southern Colorado Plateau in 3-D
By Philip Stoffer, Geologist
Take a colorful tour with the help of 3-D photography through some of the region's highlights:
Exploring the colorful southern Colorado Plateau in 3-D
By Philip Stoffer, Geologist
Take a colorful tour with the help of 3-D photography through some of the region's highlights:
Collapse, Refilling, and Uplift of Pu'u 'O'o Crater (6/10-7/25, 2007)
Collapse, Refilling, and Uplift of Pu'u 'O'o Crater (6/10-7/25, 2007)On June 17-19, 2007, and intrusion into Kilauea's upper east rift zone led to the cessation of eruptive activity at Pu'u 'O'o and the collapse of the Pu'u 'O'o crater floor.
Collapse, Refilling, and Uplift of Pu'u 'O'o Crater (6/10-7/25, 2007)
Collapse, Refilling, and Uplift of Pu'u 'O'o Crater (6/10-7/25, 2007)On June 17-19, 2007, and intrusion into Kilauea's upper east rift zone led to the cessation of eruptive activity at Pu'u 'O'o and the collapse of the Pu'u 'O'o crater floor.
PubTalk 5/2007 — Alchemy in the Abyss
Probing the mysteries of deep-ocean minerals
By James R. Hein, Marine Geologist
Probing the mysteries of deep-ocean minerals
By James R. Hein, Marine Geologist
Grizzly Bear Rubbing Tree
Grizzly bear sniffs and rubs on trees regularly used by bears in Glacier National Park then visits a log off screen and returns to the trees to rub again.
Grizzly bear sniffs and rubs on trees regularly used by bears in Glacier National Park then visits a log off screen and returns to the trees to rub again.
Grizzly Bear Rubbing Tree
Grizzly bear vigorously rubbing on a tree regularly used by bears in Glacier National Park.
Grizzly bear vigorously rubbing on a tree regularly used by bears in Glacier National Park.
Fat Grizzly Bear Digging at a Log
Grizzly bear rubbing, laying on, and excavating a decaying tree in Glacier National Park. The log shows long-term use by bears.
Grizzly bear rubbing, laying on, and excavating a decaying tree in Glacier National Park. The log shows long-term use by bears.
PubTalk 4/2007 — Shock Waves
How the 1906 earthquake shook up California and science
A presentation of the award-winning USGS Video Shock Waves introduced by David Schwartz, Earthquake Geologist
How the 1906 earthquake shook up California and science
A presentation of the award-winning USGS Video Shock Waves introduced by David Schwartz, Earthquake Geologist
PubTalk 3/2007 — Impact!
Piecing together the story of a giant meteorite crater beneath the Atlantic coast
By David S. Powars, Geologist, and R.D. Catchings, Geophysicist
Piecing together the story of a giant meteorite crater beneath the Atlantic coast
By David S. Powars, Geologist, and R.D. Catchings, Geophysicist
PubTalk 2/2007 — Riding the Storm
Landslide Danger in the Bay Area Hills
Landslide Danger in the Bay Area Hills