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Hawaii: Roots of Fire Previous Broadcasts

KQED Plus: Fri, Mar 1, 2013 -- 3:30 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.

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TV Technical Issues

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    TV Technical Issues
    • KQED DT9s OTA: very brief outages Thurs 6/11/15

      (DT9.1, 9.2 and 9.3) There will be 3 very brief outages (apx. 10 seconds each) of KQED’s Over The Air (OTA) DT9 signal Thurs 6/15, between 10am and 3pm. This is to accommodate preventative maintenance and inspections at Sutro Tower. Most TVs will recover easily each time the signal is restored, but a few viewers […]

    • KQET planned overnight outage, early Friday 3/13

      (DT25-1 through 25-3) Another station on Fremont Tower needs to perform more maintenance work overnight, requiring other TV stations to shut down their signals for the safety of the workers. KQET’s signal will turn off late Thurs/early Friday between midnight and 12:30am, and should return by 6am Friday morning. Many receivers will be able to […]

    • KQET planned overnight outage, early Wed 3/11

      (DT25-1 through 25-3) Another station on Fremont Tower needs to perform maintenance work overnight, requiring that other TV stations shut down their signals for the safety of the workers. KQET’s signal will turn off late Tues/early Wednesday between midnight and 12:30am, and should return by 5am Wednesday morning. Many receivers will be able to recover […]

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

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