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Random pictures
Satellite image of Manam volcano on 23 Mar 2017
Thursday, Mar 23, 2017
Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: ... [more]
Satellite image of Manam volcano on 21 Mar 2017
Tuesday, Mar 21, 2017
Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: ... [more]
 

Manam volcano

stratovolcano 1807 m / 5,928 ft
Papua New Guinea, -4.08°S / 145.04°E
Current status: minor activity or eruption warning (3 out of 5)
Manam webcams / live data
Manam volcano books
Last update: 23 Mar 2017
Typical eruption style: explosive
Manam volcano eruptions: ongoing since Aug 2010 (31 July 2015: large vulcanian explosion), 2004 (24 Oct: subplinian eruption) - Dec 2009, Oct 2003 - March 2004, 2003 (May), 2002 (Oct -?), 2002 (Jan-Mar), 2001 (June), 2000 (June), 1974-1999, 1965-66, 1963-64, 1963, 1962, 1961, 1959-60, 1959, 1956-58, 1954, 1953, 1946-47, 1936-39, 1932-34, 1926-28, 1925, 1924?, 1923, 1922, 1920-21, 1919, 1917, 1909-14?, 1907?, 1904, 1904, 1901-02?, 1899, 1887-95, 1885, 1884?, 1887, 1830, 1700, 1643, 1616 No recent earthquakes
TimeMag. / DepthDistanceLocation
Manam volcano located 13 km off the northern coast of New Guinea near Bogia town is one of Papua New Guinea's most active volcanoes. It has one of the longest records of historic eruptions in the SE Pacific region. The larger eruptions of Manam produce pyroclastic flows and sometimes lava flows. Both have repeatedly reached the coast and affected populated areas.
A large series of eruptions began at Manam in November and December 2004. It forced evacuations from the whole island. A pyroclastic flow at Manam volcano on 3 December 1996 killed 13 people in the village of Budua.

Background:

Manam island is the submerged top of a large stratovolcano. It is circular and 10 km in diameter. While there is vegetation on its lower slopes are vegetated, the upper slopes are bare due to its frequent eruptions. 4 large valley radiate from the summit area down to the lower slopes. They are spaced 90 degrees apart and known as "avalanche valleys", because pyroclastic flows are usually channeled inside one or several of these valleys.
Manam has 2 active summit craters, remnants of an old caldera visible at an elevation of 900 m, and 5 small flank craters located near the island's shoreline on the northern, southern and western sides.
Most historic eruptions, recorded since 1616, originated from the southern crater and erupting many pyroclastic flows into the SW avalanche valley.

2007 landslide
A landslide in March 2007 killed 4 people.

2006 large eruption
A large eruption on 27 February 2006 from Manam's Southern Crater sent an eruption column to 19 km altitude and forced the evacuation of hundreds of inhabitants.

2005 major eruptions on 27-28 February
A large eruption occurred on 27 January. It formed a large eruption plume with a wide, circular umbrella ash cloud reaching a maximum of 21-24 km (60-70,000 ft) altitude.
There were 14 injured and 1 dead at Warisi village. The eruption caused widespread destruction on the island and the volcano observatory was destroyed. Ashfall was reported ~230 km W of Manam.
Another large eruption occurred around 23h00 on 28 January, generating a plume that reached 18 km altitude.
(Source: Smithsonian / GVP monthly reports)

2004 large eruptions
Several large explosive eruptions occurred in late October - December 2004, producing eruption columns reaching up to ca. 15 km altitude:
24 October: 15 km altitude. Pyroclastic flows reached the sea and lava flowed 600 m down the SE valley.
31 October: 13.7 km;
10-11 November (powerful strombolian eruption): 9 km;
23-24 November: 10 km;
20 December: 15 km altitude.

5 people were killed, mostly due to inhaling ash, and 9600 people were evacuated. The ash damaged crops, water supplies, and houses.
Mild to strong strombolian-type activity from the summit crater was occurring in the intervals between the larger explosions.
The eruption had also an effusive component and generated lava flows flowing into the NE radial valley. The lava flow followed the Boakure side of the valley and covered the older flows from the 1992-1994 eruption.
(Source: GVP weekly and monthly reports) ...more

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