I already spoke about the coming high resolution Video show, featuring different volcanoes taking place in my workplace, in the previous post. An other one of the volcanoes which is going to be shown is Mount Nyiragongo. I have heard about this volcano and even remember when it was in the news 2002. But until I began to check for some new info very recently, I had had no idea what terrible beast this volcano obviously is. That people still live in that area is unbelievable. Yes, I had seen videos. Also the clip Chyphria included in the last thread displaying a special Darwin moment, was not new to me either.
But I had only seen images of the crater and its lake. Then I came across this article: http://www.photovolcanica.com/VolcanoInfo/Nyiragongo/Nyiragongo.html and read about the events which took place with the 1977 and the 2002 eruption.
I knew the lava of this volcano was too fast to outrun it. But somehow it slipped me by that the distance to Goma airport and residential areas can be reached within just an hour even though they are 10 km away. Fissures open in the ground. Gas is emmited and last time explosions were reported in areas where people lived, because methane was leaking out of the ground days after the eruption. During the main event, which occured over 8 vents, terraces inside the crater collapsed into it and this triggered violent phreatomagmatic activity. The ash column was 10 km high in 1977 ( this is higher than Eyja´s column was 2010 ) and 2002, and an area in 8km distance was covered with ash and scoria up to a height of 10 cm. Lava formed a delta in the nearby Lake Kivu.
The article states that the volcano cannot be closely monitored because most technical gear is either looted or vandalized. In 2002 more people died when a gas station exploded. Some local newspapers did not blame the explosion on lava intrusion rather that it was caused looters trying to steal the petrol. Public disorder was rife in the town of Goma during the eruption and the following days.
Both in 1977 and 2002 neighbouring Nyamuragira showed effusive eruptions some time before Nyiragongo went into action.
I had never really planned to pay Nyiragongo a visit one fine day or even going to the Democratic Republic of Congo. After reading all this, I sure wont be found within a few hundred kilometers when Nyamuragira goes into action again.
I suggest this article as weekend reading material again. Besides very nice pictures it gives an impressive description of the last 2 eruptions, as well as a geological map and several scientific papers.
I plan to keep the community here informed about special astronomical events. This week the occulation of Jupiter is not visible from Europe. Sky and Telescope Magazine has an article called Jupiter dances with the moon.
Spica assited by Kilgharrah
Riddle: Name those Volcanoes!
7 volcanoes 7 dings 7 points
No 1 – Visitors to this mountain, a special biodiversity hotspot, find several differing ecosystems. Look for an anagram ……. special bio! SOLVED
No 2 – Ski region Canada ‘02. Golfing center Scotland ‘05. Seaside town Germany ‘07. ? ‘08. SOLVED
No 3 – Archimedes, Pythagoras, Newton, Gauss …. & they have in common? Apart from being mathematicians they have all been honoured in the same way – the link has been found and you dont have to look any further than that really. SOLVED
No 4 – Did the 14th century poet’s journey into hell come to a premature end here? GL identified Dante as the poet, but this one is tethered and has 8 legs. SOLVED
No 5 – Fiction tells of a dying man, his life of decadence & recognition of his failure as a writer. Classic book written by EH. SOLVED
No 6 – Evidence infers that until the late 1800s a global human record was held by its summit. The record was one of hieght. SOLVED
No 7 – First it was cut off & then, by way of the capital’s bridge, it was open to the public. The bridge is London Bridge. Think executions! SOLVED
Current ranking: Updated January 13th.
|8 Sherine France
2 Bruce Stout
1 Inge B
Alan´s Evil Riddle:
Barnes-Wallis may have got an idea from my little helpers to put a shine on my 3 faces!
What am I?
By what is the process known?
Current ranking: Updated 29th December
|3 Henri le Revenant