Extremely strong activity 17.-19.10.1999The pictures on this page link to larger photos (usually 20 to 70 K). All times are local and approximate (+/- 30 mins). In order to give
an idea of the perspective, focal lengths of the camera lenses are given (e.g. f=28mm: wide angle lens). | |||
 22 Sep 1999 13h local. f=28mm from the BN S rim. The BN SE vent filled by the BN lava flow of 22 sep 1999. In the background, the 1964 cone remnant, the eroded diaframma, the Voragine and the NEC. |  26 Sep 1999 13h local. f=28mm from the NEC SE rim. The without-end pit of NEC ejects bombs vertically like a laser gun. |  17 Oct 1999 13h local. f=28mm from W rim of Cratere Ellittico. This day BN ejected tens of perfect smoke rings, lasting for tens of minutes. The two photos were taken in a period of one minute. |  19 Oct 1999 13h local. f=135mm from W rim of Cratere Ellittico. Paroxysm 2. Magma bubble 50 m wide from BN W fissure. In the left foreground, the lava flows at 10 m/s through an opening in the W BN rim. |
 19 Oct 1999 13h local. f=135mm from W rim of Cratere Ellittico. Paroxysm 2. Fire fountains 50 m high from the W fissure of BN. 50 m south of the opening, a new lava flow spills out of the lava-filled BN. |  19 Oct 1999 14h local. f=50mm from W rim of Cratere Ellittico. Paroxysm 2. After half an hour, the new lava flow is 200 m from the jeep road. Lava blocks falling from the front create a dust haze. |  19 Oct 1999 14h local. f=50mm from W rim of Cratere Ellittico. Paroxysm 2. The new aa-lava front approaches at a speed of 0.1 m/s. The lava is so fluid that the flow is only 0.5 m thick. |  19 Oct 1999 14h local. f=50mm from W rim of Cratere Ellittico. Paroxysm 2. Fire fountains 50 m high from the W fissure of BN. The lava flow front has reached the observation point in 40 minutes. |
 19 Oct 1999 15h local. f=50mm from W rim of Cratere Ellittico. The new lava flow has crossed the jeep road on the W rim of Cratere Ellittico after an hour and half from its birth. |  19 Oct 1999 13h local. f=135mm from W rim of Cratere Ellittico. Paroxysm 2. Fire fountains 50 m high from the W fissure of BN. In the left foreground, lava flows at 10 m/s through an opening in the W BN rim. |  19 Oct 1999 13h local. f=135mm from W rim of Cratere Ellittico. Paroxism 2. The opening in the W BN rim was excavated by melting during paroxism 1, on the evening of 17 October 1999 during bad weather. |  19 Oct 1999 19h local. f=50mm from W BN slope (400m from BN rim). At 300 m from the BN rim, two observers witness lava bubbles ejected to heights of 200 m from the BN SW vent. |