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TOPIC: Mount Rinjani

Blobrana

L

Posts: 131433

Date: Oct 1 20:14 2013

Samalas Volcano	Permalink

Title: Ice core and palaeoclimatic evidence for the timing and nature of the great mid-13th century volcanic eruption Author: Clive Oppenheimer Ice cores from both the Arctic and Antarctic record a massive volcanic eruption in around ad 1258. The inter-hemispheric transport of ash and sulphate aerosol suggests a low-latitude explosive eruption, but the volcano responsible is not known. This is remarkable given estimates of the magnitude of the event, which range up to 5 x 1014-2 x 1015 kg (~200-800 km3 of dense magma), which would make this the largest eruption of the historic period, and one of the very largest of the Holocene. The associated collapse caldera could have had a diameter up to 10-30 km. Palaeoclimate reconstructions indicate very cold austral and boreal summers in ad 1257-59, consistent with known patterns of continental summer cooling following tropical, sulphur-rich explosive eruptions. This suggests an eruption in ad 1257, producing a stronger climate forcing than hitherto recognised. Read more (PDF) __________________

Blobrana

L

Posts: 131433

Date: Oct 1 19:59 2013

Eruption of 1257	Permalink

The volcano responsible for the world's largest ever eruption in 1257 has been discovered in Indonesia. Researchers have determined that the explosion was from the Samalas volcano, which is part of the Mount Rinjani Volcanic Complex on Lombok Island. The scientists, whose findings are published in the Proceedings of the National Academy of Sciences, say the volcanic eruption was the biggest in the last 7,000 years, yet its origin has baffled glaciologists, volcanologists, and climatologists for decades. Read more __________________

Blobrana

L

Posts: 131433

Date: Oct 1 03:37 2013

Samalas Volcano	Permalink

Mystery AD1257 eruption traced to Lombok, Indonesia The mystery event was so large its chemical signature is recorded in the ice of both the Arctic and the Antarctic. European medieval texts talk of a sudden cooling of the climate, and of failed harvests. In the PNAS journal, an international team points the finger at the Samalas Volcano on Lombok Island, Indonesia. Read more __________________

Blobrana

L

Posts: 131433

Date: May 27 05:44 2013

RE: Mount Rinjani	Permalink

A massive eruption of Rinjani in 1258 CE may have triggered the Little Ice Age. The Rinjani caldera forming eruption is thought to have occurred in 1258 CE. Dated to "late spring or summer of 1257," this eruption is now considered the likely source of high concentrations of sulfur found in widely dispersed ice core samples and may have been "the most powerful volcanic blast since humans learned to write." Read more __________________

Blobrana

L

Posts: 131433

Date: Oct 16 16:13 2012

	Permalink
Perak Journalists To Climb Rinjani Volcano, Lombok Next Month A group of journalists from Perak will embark on an expedition to climb the Rinjani Volcano on the island of Lombok, Indonesia from Nov 4-11 Read more __________________

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