Videos

An underwater volcanic landscape tells a complex tale

by Charles R. Bacon, Geologist

Visualizations presented by David W. Ramsey, Geologist

Biodiversity and Increasing Population and Development in California

by Robert N.Fisher, Research Zoologist

Video Presentation and Discussion

Featuring the award-winning USGS video Molten Paradise-Kilaea Volcano by Stephen Wessells, introduced and discussed by Robert I. Tilling, Volcanologist

See-

Lava appears from under crust and drops into depression at front of advancing breakout. Width of blob of lava that appears is about 30 cm.

Lava emerges from under crust along side of breakout on steep slope. Listen to creaking sounds, about halfway through video, as crust flexes and breaks. See still taken at 0610:15 today.

This clip lasts 30 seconds and so is a large file, but it shows such notable dynamics at flow front that it might be worth it to some of you patient ones. The active stream is 50-75 cm wide. Note, early on, how sliding crust plows into lava.

Lava pours out from under crust at front of advancing breakout. See still taken at 0607:33 today.

Same cascade as in first clip, but viewed more from side to see lava falling down cliff and spreading across surface of lava delta. Similar view to still image taken at 0548 today.

Lava issues from breached tube and quickly disappears over old sea cliff. Note that center of stream stands above margins. See still taken at 0545 today.

New Estimates of Earthquake Hazard and Risk Across the Bay Region

By Michael Blanpied, Geophysicist

Surging cascade on steep cliff face. Note that surges override part of cascade next to cliff, which is slowed by friction with the cliff.

Lava in channeled breakout from nearby tumulus flowing rapidly down steep slope before spreading out on flat ground. Same channel as shown in last two stills for today. Width of channel, about 2 m.

Gushing start of cascade shown in image taken at 0553. Lava comes from crusted flow to right. Width of flowing lava, about 1 m.

Downstream from first clip about 2 m. Same as shown in image taken at 0554.

Two strands of flowing lava come together to form single cascade on upper part of old sea cliff at Highcastle. Still taken at 0546 shows same scene.

Rapidly moving and changing breakout in Highcastle lobe. Still taken today at 0603 is of this breakout. Width of view, about 2.5 m.

Continuation and further development of rapidly moving and changing breakout in Highcastle lobe. Still taken today at 0603 is of this breakout. Width of view, about 2.5 m.

Spreading and advancing breakout, the same as that shown in 0545 still image for today. Width of view, about 2 m.

Closer view of spreading and advancing breakout shown above. Width of view, about 0.6 m.

Two converging toes, the same as those shown in last two still images for today. Width of view, about 1.5 m.

Integrating and Sharing Geographic Information in the Public Domain

By Ken Osborn, Cartographer