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Volcano Hazard Program videos.

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Continued movement of lava across rope barrier
Continued movement of lava across rope barrier
Continued movement of lava across rope barrier

Continued movement of lava across rope barrier. Muffled sounds of a long-lasting, migrating methane explosion can be heard about two-thirds of the way through the clip, followed by a "Wow."

Continued movement of lava across rope barrier. Muffled sounds of a long-lasting, migrating methane explosion can be heard about two-thirds of the way through the clip, followed by a "Wow."

Lava burning bush
Lava burning bush
Lava burning bush

Lava moving down rather steep slope and burning bush at snout of stream. Width of burning bush, about 1 m.

Lava moving down rather steep slope and burning bush at snout of stream. Width of burning bush, about 1 m.

Lava moving rapidly
Lava moving rapidly
Lava moving rapidly

Toe of lava moving fairly rapidly down moderate slope along edge of Kohola flow. Note that lava moves more rapidly at top than at base of toe, in contrast to lava in video for March 1, which was moving across nearly flat ground. Note also developing wrinkles in moving crust.

Toe of lava moving fairly rapidly down moderate slope along edge of Kohola flow. Note that lava moves more rapidly at top than at base of toe, in contrast to lava in video for March 1, which was moving across nearly flat ground. Note also developing wrinkles in moving crust.

Lava flow advancing
Lava flow advancing
Lava flow advancing

Details of flow advance shown in 25-second clip. Lava oozes outward from base of flow, picks up loose flakes of crust (1-3 cm across) on ground surface, and lifts them up as flow thickens. This is how material once on ground surface gets onto top of flow.

Details of flow advance shown in 25-second clip. Lava oozes outward from base of flow, picks up loose flakes of crust (1-3 cm across) on ground surface, and lifts them up as flow thickens. This is how material once on ground surface gets onto top of flow.

Broad cascade and falls
Broad cascade and falls
Broad cascade and falls

Part of broad cascade and falls that suddenly gushed from under crust at top of sea cliff. Turn down your sound; lots of wind noise.

Part of broad cascade and falls that suddenly gushed from under crust at top of sea cliff. Turn down your sound; lots of wind noise.

Lava Cascade
Lava Cascade
Lava Cascade

Base of lava cascade and construction of mound on beach below sea cliff. Turn down your sound; lots of wind noise.

Base of lava cascade and construction of mound on beach below sea cliff. Turn down your sound; lots of wind noise.

Cascade and lava falls on west edge of Kohola ocean entry
Cascade and lava falls on west edge of Kohola ocean entry
Cascade and lava falls on west edge of Kohola ocean entry

Cascade and lava falls on west edge of Kohola ocean entry, falling over sea cliff about 8 m high. Turn down your sound; lots of wind noise.

Lava tear
Lava tear
Lava tear

Tear begins to develop in crust on stage-left side of flow. Lava eventually pours from tear. Stream is 0.75-1 m wide.

Tear begins to develop in crust on stage-left side of flow. Lava eventually pours from tear. Stream is 0.75-1 m wide.

Two streams break from under inflating flow
Two streams break from under inflating flow
Two streams break from under inflating flow

Two streams break from under inflating flow. Note how crust forms on closer stream and becomes wrinkled where lava runs into barrier. Each stream is about 3 m long.

Two streams break from under inflating flow. Note how crust forms on closer stream and becomes wrinkled where lava runs into barrier. Each stream is about 3 m long.

Small gush of lava
Small gush of lava
Small gush of lava

Small gush is on crest of small divide and starts flowing down right side as well as left. Stream is about 1 m wide.

Small gush is on crest of small divide and starts flowing down right side as well as left. Stream is about 1 m wide.

Lava runs from under crust along edge of inflating flow
Lava runs from under crust along edge of inflating flow
Lava runs from under crust along edge of inflating flow

Lava runs from under crust along edge of inflating flow. Flakes of crust, heated by the emerging lava, spall off and fall onto surface of lava. Width of view, about 75 cm.

Lava runs from under crust along edge of inflating flow. Flakes of crust, heated by the emerging lava, spall off and fall onto surface of lava. Width of view, about 75 cm.

Slow moving lava
Slow moving lava
Slow moving lava

Lava slowly rafts plate of crust downstream. Width of plate of crust, about 1 m.

Lava slowly rafts plate of crust downstream. Width of plate of crust, about 1 m.

Rushing toe of lava
Rushing toe of lava
Rushing toe of lava

Rushing toe of lava that has just broken out from front of one active lobe of flow on coastal flat seaward of Paliuli. Toe is about 50 cm wide. Note how crust is "scrunched" at bottom of minicascade, resulting in wrinkles. Other videos on this day show breakouts in same area. In all videos, wind noise may be bothersome.

Rushing toe of lava that has just broken out from front of one active lobe of flow on coastal flat seaward of Paliuli. Toe is about 50 cm wide. Note how crust is "scrunched" at bottom of minicascade, resulting in wrinkles. Other videos on this day show breakouts in same area. In all videos, wind noise may be bothersome.

Wrinkling of thin crust
Wrinkling of thin crust
Wrinkling of thin crust

Video shows wrinkling of thin crust at bottom of gentle slope. Note the concave-upstream shape of the wrinkles. Stream is about 1 m wide.

Video shows wrinkling of thin crust at bottom of gentle slope. Note the concave-upstream shape of the wrinkles. Stream is about 1 m wide.

Single toe in action
Single toe in action
Single toe in action

Single toe in action. Note concentric wrinkes forming at bottom of view.

Single toe in action. Note concentric wrinkes forming at bottom of view.

Rapidly flowing single toe of lava
Rapidly flowing single toe of lava
Rapidly flowing single toe of lava

Rapidly flowing single toe of lava at front of flow 440 m seaward of Paliuli. Other videos on this day focus on similar toes. Sound was turned off during the imaging. For scale, flowing lava in all clips is 1-3 m wide.

Rapidly flowing single toe of lava at front of flow 440 m seaward of Paliuli. Other videos on this day focus on similar toes. Sound was turned off during the imaging. For scale, flowing lava in all clips is 1-3 m wide.

Sheet of lava pouring from inflating flow
Sheet of lava pouring from inflating flow
Sheet of lava pouring from inflating flow

Sheet of lava pouring from inflating flow. Note wrinkling, moving crust.

Low-angle view of fluid toe spreading out
Low-angle view of fluid toe spreading out
Low-angle view of fluid toe spreading out

Low-angle view of fluid toe spreading out. Note moving dark crust on distant part of toe.

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