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Hawaii: Roots of Fire Previous Broadcasts

KQED Plus: Tue, Feb 14, 2012 -- 10:00 PM

This documentary goes down below the Hawaiian Islands in a search for the hidden forces that drive the planet's largest and most active volcanic system. It follows earth scientists as they work among the volcanoes of the Big Island of Hawaii, pursuing clues and compiling evidence in a quest to shed new light on the mysterious inner Earth process that has been producing giant volcanoes in the middle of the Pacific Ocean for more than 75 million years.
Scientists have long been puzzled over the source of the huge quantities of lava erupting out of Hawaii's massive volcanoes. Does the lava come from just below the Earth's crust? Or does it come from much deeper, perhaps even as far down as the Earth's core, some 1800 miles below the surface? The film focuses on an international team of scientists who boldly take on these key questions with a major drilling project into the flanks of Mauna Kea, Hawaii's tallest volcano. As their work progresses, another group of scientists embarks on a huge seismic study that deploys instruments on the islands and the seafloor surrounding them. After years of painstaking research, startling new discoveries are made. Not only do the scientists determine where the lava is coming from, but they solve other long-standing mysteries about the workings of Hawaii's magnificent volcanoes.

Repeat Broadcasts:

  • KQED Plus: Wed, Feb 15, 2012 -- 4:00 AM
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TV Technical Issues

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    TV Technical Issues
    • Mon 11/03/14: Work on KQED Plus tower (DT54)

      Another station needs to do maintenance on its equipment on the tower on Monument Peak, requiring that we switch our DT54 Over the Air signal from the main antenna to the auxiliary when the work starts, then back to the main antenna at the conclusion. These switches should cause momentary outages only, and most receivers […]

    • Wed 10/15 morning: KQED Plus (KQEH) Over the Air signal down

      UPDATE: This problem has been resolved, and the OTA signal for the DT54 channels restored. (DT54.1 through 54.5) KQED Plus’ Over the Air transmission is currently off air via our KQEH transmitter on Monument Peak northeast of San Jose. Technicians are working on the problem. No current estimate regarding how long this will exist. We […]

    • KQET (DT25) Over the Air: Wed 8/27

      We are aware of the break-up issues for our DT25 Over the Air signal in the Monterey/Salinas area. This will also affect viewers of any cable or satellite signal provider using that transmitter as their source. Engineers are working on the problem.

To view previous issues and how they were resolved, go to our TV Technical Issues page.

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