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Hawaii: Roots of Fire Previous Broadcasts

KQED Plus: Fri, Jul 26, 2013 -- 12:30 AM

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 World: Sun, Jul 28, 2013 -- 6:30 PM
  • KQED World: Sun, Jul 28, 2013 -- 2:30 PM
  • KQED World: Sun, Jul 28, 2013 -- 7:30 AM
  • KQED World: Sat, Jul 27, 2013 -- 7:30 PM
  • KQED Plus: Sat, Jul 27, 2013 -- 5:00 PM
  • KQED World: Sat, Jul 27, 2013 -- 1:00 PM
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TV Technical Issues

TV
    TV Technical Issues
    • Wed 11/30: planned momentary outages of DT54 over the air signal

      (this is a continuation of the work originally announced for 11/28, which was not completed on Tuesday.) At some point during the morning of Wednesday Nov. 30th, the KQEH transmitter will switch from its main antenna to the auxillary one, to allow for the safety of workers doing maintenance for another TV station on the […]

    • Tues 11/29: DT54 Over the Air Signal restored

      Repairs have been completed on today’s transmitter issue, and the signals for DT54.1 through 54.5 have been restored.

    • Tues 11/29: DT54 Over the Air signal currently down

      (DT54.1 through 54.5) During the course of the work described below, which necessitated moving our outgoing signal from the main antenna to the auxillary antenna, the transmitter suddenly shut down. As of 3:30pm Tues, we do not have an estimated time for repair and return of the Over the Air signals for DT54.1 through 54.5

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

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