NEAR AND FAR-FIELD EFFECTS OF TSUNAMIS GENERATED BY THE PAROXYSMAL ERUPTIONS, EXPLOSIONS, CALDERA COLLAPSES AND MASSIVE SLOPE FAILURES OF THE KRAKATAU VOLCANO IN INDONESIA ON AUGUST 26-27, 1883
by George Pararas-Carayannis
Excellent documentation of the effects of Krakatoa eruption. Click Here
A terrific site for plate tectonics illustrations.
Capt. Johan Lindeman piloted the ship Governor General Loudon through the Sunda Strait as Krakatoa erupted in 1883. The ship, operated by the Netherlands Indies Steamship Company as a mail steamer and excursion vessel, was based at Batavia.
This account from the captain begins after the ship docked at Anjer at 2 p.m. on Aug. 26, headed for Telok Betong. A few quotes in the summary of events have been taken from accounts written by a member of the ship’s crew and a passenger.
For Captain Lindeman’s Diary, Click Here
Paoehoe is a smooth braided form of lava.
The formation of this structure requires that the molten lava be not subjected to shear forces nor unduly agitated while cooling.
Most of what is happening in this video clip (courtesy National Geographic) will result in pahoehoe as we see here:
If the lava is stressed as it surfaces or during cooling you get a physical form much like cinders called A’a.
Here’s a great picture of A’a marching over a bed of pahoehoe, both from the same volcano and with similar chemical make up.
More about Lava here.
From my volcano presentation, a time lapse series from Kilauea, on the Big Island of Hawai’i:
Sailing by Kilauea on an active night is about as good as it gets…
Good places to find volcano news…..
Particularly European: Stromboli Online
Particularly American: The US Geological Survey
Canada has volcanoes too, about 200 ‘volcanic features’ as a matter of fact.
But they are kinder and gentler, generally say ‘I’m Sorry’ when they burp, and as a result, very seldom make the news. (Hoodoo Mountain shown above)
Check them out here.
For New Zealand’s Volcanic and Earthquake activity, click here
Christchurch Earthquakes in great detail here at http://quake.crowe.co.nz/
…………..replete with volcanic lightning.
Click Here for More