Category Archives: Volcanoes

Firehose of lava

This week’s Friendly Friday challenge theme is ‘Dramatic.’ See more responses here.

I’ve opted for a dip into the archives for this challenge. Two years ago, lava from Kilauea Volcano’s Pu’u O’o vent reached the ocean, tumbling down a cliff into the water. One day, the cliff collapsed, leaving the lava shooting out of a hole high up in the new cliff. This was called the firehose of lava because that’s what it looked like.

I first learned about it when I saw a video of the lava firehose on one of the news channels. What impressed me was that it was really hard to to see that it was a video. The flow was so strong and so consistent that it looked like a photograph. It was only by looking closely at the edges of the firehose that I could make out spatters of moving lava.

I headed down to the volcano, to take at look at this phenomenon, the day after I saw the video and was duly impressed by the dramatic scene. It was well worth the trip and well worth my quick visit. The following day another cliff collapse moved the firehose back and out of sight from the observation areas.

These are two photos from that visit. More photos can be seen in previous posts here, here, here, and here.

Signs: Heavy water

This sign guards what is presumably Hawaii’s heavy water plant, though why such a plant would be halfway up the side of Mauna Kea is a mystery. Or perhaps the sign is just a warning that it would not be a good idea to pick up the large water tank behind the sign. Either way, the sign made me smile.

Pohoiki road closed

This week’s Sunday Stills challenge theme is ‘Lines and Squares.’ See more offerings here.

This is one of the roads in Isaac Hale Beach Park at Pohoiki. This park is where last year’s lava activity came to a halt leaving a wall of lava making a border to the public area of the park. Walking beyond the ‘No Trespassing’ sign won’t result in your immediate arrest, but the powers that be don’t want people walking on the flow itself.

But this is a road after all and the sign makes it seem likely that someone driving here might continue on and run into the flow. Actually, this is entirely possible, given how some people drive around here.

Regardless of the intent, I like how the lines on the road disappear into the lava and the red squares are warning signs.

Electric

This week’s Friendly Friday challenge theme is ‘Electric.’ See more responses here. These three photos are quite different, but linked by this theme.

The top photo shows a view of an electric substation. I like the lines and shapes such facilities offer. But where does this power come from? A good deal is from oil fired plants, but Hawaii is working to get more of its electricity from locally sustainable sources.

In the middle is a view of Hawi wind farm, with Mauna Kea in the background. There are several wind farms of varying sizes in Hawaii including a few on the Big Island. Their contribution to the power grid is small, but growing. Solar power is also a big contributor, on an individual house basis or for whole communities (here).

One source that provided around 25% of the Big Island’s electricity was the Puna Geothermal Venture (PGV). Last year’s eruption shut them down, though, as the bottom photo shows, the flows mostly missed the plant itself. I think a couple of their wells were covered by lava, but most were spared. Currently, they’re in the process of restarting power production. Not everyone here is a fan of this power source. The same can be said about the Honua Ola bioenergy plant, which will generate electricity from burning eucalyptus chips, but which is still to become operational.

Mauna Kea telescopes at sunset

This week’s Friendly Friday challenge theme is ‘Remote.’ (See more responses here.)

I’m going for this photo for three reasons. First, Hawaii itself is remote at more than 2,200 miles from the nearest major landmass. The closest U.S. state is actually Alaska, though California is the closest state to the Big Island.

Secondly, Mauna Kea is one of the more remote spots on the island, particularly these days. Protests over building a new telescope on Mauna Kea have resulted in the road up the volcano being closed for some weeks now with no end to the dispute in sight. So if a person wants to go to the top, a long and arduous hike is the only way.

Thirdly, the telescopes on the summit are there to explore the farthest reaches of the universe, and you can’t get more remote than that.

Fissure 8

This time last year, the newest eruption of Kilauea Volcano was still going strong in the Puna district of the Big Island. The previously active vents, in Halemaumau Crater and at Pu’u O’o, drained of lava at the end of April. Lava then moved underground, down the east rift zone, toward the southeast tip of the island. It resurfaced in May in Leilani Estates.

By the end of May, 24 fissures had discharged lava. Two of those sent flows down to the coast, but at the end of May the main eruption settled on Fissure 8. A river of lava flowed northeast, inundating Highway 132 and reaching the ocean at Kapoho Bay in early June. This flow continued into August, but by the end of that month all activity had more or less ceased. In all, more than 700 homes were destroyed during the eruption, but more than 800 acres of new land had been formed.

These photos show Fissure 8, the source of the main flow. The top photo shows Fissure 8’s location, bordered by houses in Leilani Estates that escaped destruction during the eruption. In the middle, the main crater and the ‘canal’ that channeled the flow toward the coast. Below, another view of Fissure 8 and the wasteland of destruction surrounding it.

PBS’s NOVA put out a show about the eruption earlier this year with some great information about what was actually going on during the eruption. It might be accessible on their site, PBS.org, or search online for the title of the show: PBS Nova Kīlauea: Hawaiʻi on Fire.