Note! The contents of this posting are obsolete, there is currently no surface lava accessible on the island. When it does reach the surface again I will most likely be there, look to see an update of this article in the future!
The 61G flow reached the ocean a month ago, but only this last weekend did I get a chance to go out and see it for myself. It is quite a bit further to go than previous visits, about four and a half miles, but is it also much easier. I realized that my Getting to the Lava post is a bit outdated and a serious update is in order.
The 61G lava flow ocean entry at KamokunaThe 61G flow began on May 24th, breaking out on the southeastern flank of Pu’u O’o. The flow moved fairly quickly, cutting the re-built Chain of Craters Road and entering the ocean on July 26th. The flow is quite vigorous with an ample supply of lava. There are currently multiple surface breakouts and multiple ocean entry points. The flow is building new land near Kamokuna, the lava delta has added around 11 acres to the Big Island in one month.
Map of the 61G lava flow as of July 2ndWith easier access and a dramatic ocean entry the 61G flow is drawing large crowds of visitors that have come to see the spectacle. In my opinion the trip is very much worth the effort. Still, there are inherent risks in experiencing raw nature like this. A little preparation is in order and may prevent a visit from becoming an emergency.
A helicopter ride over an active volcano… With no doors.
In mid-July deb and I took a helicopter flight over Kilauea with Paradise Helicopter. A lot of fun! I took all of the material we shot in our helicopter flight and assembled as a bit of video. A lot more view-able this way, more fun than a pile of images sitting on a disk.
On the other had I think I discovered all of the things that can go wrong when shooting from a helicopter with no doors! The wind and vibration is rough, making even the wide angle video of a GoPro jump about. Video shot on the DLSR’s was useless. I also discovered that helicopter blades passing in front of the Sun gives the GoPro Hero 4 Black exposure fits, with black ripples in the image. Thanks to image stabilization and fast shutter speeds the still photos are fairly good.
Seated in a steeply banking helicopter with nothing between me and the molten lava a couple hundred feet below is a thrill I will not soon forget. You can smell the sulfur and feel the heat. Hopefully a little of that comes through in the video.
I had promised Deb a helicopter ride months ago. It is about time to deliver on that promise. Just waiting for the volcano to do something interesting. Will a new lava flow work?
The currently active Puʻu Oʻo vent on KilaueaParadise Helicopter has a doors off Volcanoes and Waterfalls Extreme tour I really wanted to try. I have always been frustrated when shooting through a window on an aircraft, reflections or scuffed plastic windows always seem to spoil the shot. Not having a window, much less a door to shoot through was a huge incentive.
Processing photos of the Halemaʻumaʻu lava lake presents quite the challenge. The very bright lava fountains are difficult to properly expose while showing anything of the surrounding scene. Yet another try is shown here. This version uses very heavy tonal editing to compress the dynamic range of the lava fountains while expanding the low end of the histogram to show detail in the rock walls. The result is interesting, but quite different than seen in person…
The lava lake at Halemaʻumaʻu sport several fountains of lava along the far rim, May 2, 2015.
Manning the Keck Observatory table at AstroDay had me in Hilo again this weekend. Already close, why not visit the volcano again?
The lava lake at Halemaʻumaʻu sport several fountains of lava along the far rim, May 2, 2015.This time I drug Deb along with me, not completely unwillingly I admit. A simple plan… Drive over the island early, do lunch at Hilo Burger Joint, off to the mall to do our thing at the table, breakdown the displays, and straight out to the volcano.
That “straight out” to the volcano part was a very good idea, I had made that clear in the plan. Arriving at the park we could see preparations and extra personnel ready for an onslaught of visitors. We got there just in time, parking in the Jagger Museum parking lot. A short time later we learned from the folks just arriving that they were parking at another lot further out. At least the Park Service had a shuttle bus running.
The pressure just keeps on building. This is a major surge of magma into the mountain. There is not much mystery about this… The increased seismic levels, the rising lava lake, but most of all the tilt meters indicating substantial inflation of the summit caldera.
Deformation data for Kilauea Caldera from the USGS Hawaii Volcano Observatory for May 2, 2015Always watch the deformation data, this is the single best indicator of the pressure in the magma chamber. Sensitive tilt meters continuously monitor the swelling of the summit around the caldera, giving a real time view inside the volcano.
As you can see from the graph it has gone up and up over the last week. There have been a couple pauses, almost looking like it was going to begin deflation. But no, it just goes up again. The result is lava spilling out onto the floor of Halemaʻumaʻu crater and a beautiful nighttime show.
The interesting thing is that this increase in pressure has not been seen at the downslope vent around Puʻu ʻŌʻō. The flows there remain rather anemic and there is no sign of inflation around the vent. Add the seismic data and things get interesting.
Seismic data for the Kilauea Caldera and southeast rift zone May 2, 2015The USGS has sketched out this basic outline of the events in the volcano in their public press releases. But they are rather cautious to give any strong predictions. No surprise, they have a reputation to maintain. Perhaps it is wise to not give any predictions, this volcano may seem predictable, but when you least expect it it does something different.
I on the other hand, have no professional reputation as a vulcanologist. I can throw caution to the wind and prognosticate…
My prediction? Unless something occurs to relieve the pressure, perhaps a major increase in the flow of lava at Puʻu ʻŌʻō, there will be an eruption elsewhere. My guess? South of the main caldera along the southeast rift zone in the Makaopuhi Crater or Nāpau Crater area.
When? Who knows, much depends on the magma supply surge continuing. As long as the pressure keeps building the odds of an eruption elsewhere on the volcano increase with it.
It will be interesting to watch. And watch we will. I expect to be at the Jagger museum overlook Saturday evening. Look for the crowd around my telescope.
