Nouvelles du volcan Kilauea
Kilauea volcano update: Lava flows approach Apa'a road in Pahoa
Friday Oct 24, 2014 13:23 PM | AUTEUR : T
The lava flow advancing towards Pahoa on 22 Oct (image: USGS / annotations Culture Volcan)
Comparison of the lava flow on 8 and 22 Oct (HVO / Culture Volcan)
A bulldozer reopens a portion of the Chain of Craters road (image: Hawaiian Volcanoes National Park)
The lava flow continues to advance towards Pahoa and might cut the first road very soon. During an overflight on 22 Oct, the most advanced front of the 27 June flow, a narrow lobe, was only approx. 480 m away from the Apa'a road.
Map of Kilauea volcano and roads (HVO)
The rate of advance of the flow, now at 21 km distance from its vent, has been highly variable, from an average rate of about 80 m/day during the previous week to rates as high as 300 m/day (330 yd/day) at times from Monday to Wednesday.
If the advance of the lava continues at current rates, the first lava to touch the Apa'a road could occur within hours or days. A mobile monitoring station was installed to continuously keep track of the progression of the lava.
For the time being, no evacuations are ordered for residents of Pahoa or Kaohe Homesteads, but the Pahoa Recycling and Transfer Station will close on Friday and will be temporarily (or permanently) relocated to an area on Kauhale Road approximately 2 km to the east, where it is thought to be outside the path of potential lava flows following the dominant topographic slope.
Reopening of Chain of Craters road
As a response to the increasing threat of lava entering Pahoa and interrupting highway 130, the government decided to start works to reopen the "Chain of Craters Road", closed since November 1986 when lava flows from Kupaianah'a and later from Pu'u 'O'o vents began to cover an approx. 18 km long section of the road along the coast, mostly during the 1990-2000s.
The reason to open the Chain of Craters Road is to provide an alternative access to the south-eastern part of Big Island in case of interruption of road 130. The estimated cost is between 12 and 15.5 million USD.
Halema'uma'u lava lake
On the summit, the lava lake inside Halema'uma'u crater has been more or less stable. A small collapse of a part of the crater wall during the night 19-20 Oct produced a violent degassing phase, or an explosion, which likely ejected incandescent bombs to the outer crater rim - and would have been extremely dangerous for any observers there:this is the main reason the area is closed to visitors.
Source: HVO / Culture Volcan
Friday, Oct 17, 2014
The June 27th lava flow advancement has slowed, with the leading edge of the flow moving only a few tens of meters (yards) over the past two days. ... [details]
Tuesday, Sep 30, 2014
Following several days of increased pressure at Kilauea's summit, lava activity is picking up on the June 27th flow with new flows continuing to move to the north, on a pathway leading slightly away from the town of Pāhoa for now. ... [details]
Thursday, Sep 25, 2014
In the past few days, the front of the lava flow heading towards Pahoa has stalled its forward progress. There is still lava activity at a decreased level, but this is only widening the lava field instead of advancing further. ... [details]
Friday, Sep 19, 2014
Official releases from the Hawaiian Volcano Observatory over the past 48 hours indicate the lava flow is now advancing at a rate of 290m (960 ft) per day and has narrowed once again, after spreading out and slowing down for several days. ... [details]
Wednesday, Sep 17, 2014
Pu'u 'O'o's "June 27th flow" continues to advance at a rate around 215m (705ft) per day through vacant forest, but has crossed the Forest Reserve boundary as it continues to skirt downhill of the nearest homes. ... [details]