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Long-term evolution of the Episode 58 lava channel
Long-term evolution of the Episode 58 lava channel
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.

Grizzly Bear Rubbing Tree and Log
Grizzly Bear Rubbing Tree and Log
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.

Aerial of eddy in channel near vent D
Aerial of eddy in channel near vent D
Aerial of eddy in channel near vent D

Aerial of eddy in channel near vent D

Monsoon-Rain Flow in an Ephemeral Channel near Sierra Vista, Arizona
Monsoon-Rain Flow in an Ephemeral Channel near Sierra Vista, Arizona
Monsoon-Rain Flow in an Ephemeral Channel near Sierra Vista, Arizona

As part of the assessment of the binational San Pedro aquifer, the effects of urbanization on runoff in ephemeral streams was studied. Ephemeral streams are those that flow in response to precipitation. Runoff in tributaries to the San Pedro River is important in understanding the water budget of the river.

As part of the assessment of the binational San Pedro aquifer, the effects of urbanization on runoff in ephemeral streams was studied. Ephemeral streams are those that flow in response to precipitation. Runoff in tributaries to the San Pedro River is important in understanding the water budget of the river.

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 Rubbing on a Tree
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
Grizzly Bear with Cubs Charges Wolf
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

Looking down the channel of Fissure D

PubTalk 7/2007 — Plate Tectonics in Action
PubTalk 7/2007 — Plate Tectonics in Action
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
Collapse and refilling of Pu‘u ‘Ō‘ō crater
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
Refilling of Pu‘u ‘Ō‘ō crater
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.

video thumbnail: Refilling of Pu'u 'O'o Crater (July 13, 2007) Refilling of Pu'u 'O'o Crater (July 13, 2007)
Refilling of Pu'u 'O'o Crater (July 13, 2007)
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
Refilling of Pu‘u ‘Ō‘ō crater
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.

video thumbnail: Refilling of Pu'u 'O'o Crater (July 8, 2007) Refilling of Pu'u 'O'o Crater (July 8, 2007)
Refilling of Pu'u 'O'o Crater (July 8, 2007)
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
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.

(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.

video thumbnail: 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)
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.

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
PubTalk 6/2007 — Adventures in Southwest Geology
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)
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.

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.

Grizzly Bear Rubbing Tree
Grizzly Bear Rubbing Tree
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 Rubbing Tree
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.