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Manam volcano (Papua New Guinea): eruption update

Friday Mar 03, 2006 18:43 PM | DOOR: TOM PFEIFFER

Details of Manam's large eruption on 27 Feb are emerging via the Rabaul Volcano Observatory (RVO). According to that information, the eruption can be classified as Sub-Plinian:


"The height of the eruption column reached about 19 km (~62,300 ft) a.s.l. based on satellite data analysis. RVO reported that the strong phase of the eruption declined on 28 February at around 0030. During the height of the activity, incandescent lava fragments were thrown 700-800 m high; ejection heights later decreased to 200-300 m.


A large amount of ash was deposited on the E part of the island and lava flowed down the SW valley. By 1 March, only gas was emitted from Southern Crater, no noises were heard, and weak incandescence was visible around the vent. Incandescent lava fragments were thrown 100-150 m above the vent and fell into the crater. Main Crater gently emitted occasional ash clouds, and then gas later in the day. Field inspections on 28 February confirmed that a lava flow traveled down the SW valley to about 600 m elevation, a pyroclastic flow traveled down the same valley to about 500 m elevation, and the maximum ash thickness was about 7-8 cm on the E part of the island.


After mid-February the seismic station at the volcano was not operating and radio communication with the observer at Bogia ceased. The island is inhabited by about 300 people who returned to the island after evacuating following the 27 January 2005 eruption. The Alert Level at the volcano was at "Stage 2.""


---
Source: GVP/USGS Weekly Volcanic Activity Report 22-28 Feb. 2006

Vorig nieuws
Friday, Feb 24, 2006

The dates for the new expedition to Nyiragongo volcano are now set to 19-27 July, 2006. 3 spaces are still available. Details here.

[meer...]

Tuesday, Feb 07, 2006

Tom and Marco are just back home from our pilot tour to Nyiragongo volcano, which was very successful, so we plan to repeat the tour in July this year already. In the near future, we will post photos from the tour as well as details about the tour. Stay tuned!

... [meer...]
Friday, Dec 23, 2005

2005 is soon over, and it's a good time to take a break and think about important things in life. The VolcanoDiscovery team wishes you a future without wars and tsunamis. Merry Christmas!

[meer...]
Stromboli volcano in eruption (11 Oct. 2005)
Friday, Oct 21, 2005
A series of new photos, taken by Marco Fulle during the Stromboli to Etna tour (8-16 Oct.) are now online! [meer...]
Wednesday, Oct 12, 2005

The tours this year on Santorini are now over, too, with lots of fun and great company as well. Thanks to all participants!
Before we send out our formal newsletter, when the programs for 2006 are completed, a quick notice to announce that Tom will offer a new, 12-days tour / expedition to the Rift Valley including Lengai volcano in Feb. and summer 2006, Costa Rica in late March and (probably) July 2006. As well, Tobias (who is right now touring in the Saronic Gulf) awaits with a new, exciting program on Milos, a wonderful, volcanic island in Greece! Other new or recently developped programs include Nisyros (Greece) and the Eifel region in Germany (details will come soon).
Greetings from Athens! Tom  

[meer...]

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