Note the Regional Disaster Management Agency ( BPBD ) Magelang regency , last activity accompanied by a puff of incandescent lava burst on Sunday ( 20/04/2014 ) , at 4:26 to 4:40 pm .
Previously , a mountain located on the border of Central Java with a DIY that has issued the first big gust on July 5, 2012 . Gust second major came a year later on July 22, 2013 .
" On 18 November 2013 re-occurring gust or within six months of the previous gust . Occurred puff back occurs on March 10, 2014 and March 27, 2014 . Gust repeated on Sunday, April 20th yesterday , " explained Head of Emergency and Logistics BPBDs Magelang Regency , Joko Sudibyo , Tuesday ( 04/22/2014 ) .
According to Joko , this gust acceleration interval occurs because the position of the magma closer to Merapi stomach . Although it was not until Merapi magma chamber , but the movement of the magma continues to happen so fast approaching . The movement of the magma which then generates the gas .
Joko resume , puff can also be triggered due to other factors , such as tectonic earthquakes . Nevertheless, it can not be sure because the necessary studies and research in the volcano experts .
" It is important to learn and understand the new character of Mount Merapi . 's Why need synergy between and among observers kegunungapian volunteers and the community , " said Joko .
Joko said , the Center for Disaster Research and Technology Development Geology ( BPPTKG ) is currently carrying out research on samples of lava that came out along with a small eruption that occurred last Sunday .
The study , said Joko , to determine whether the lava is 2010 or residual material derived from new magma .
( Read: pleci jantan )
"If there is new magma means indicate magma movement and position closer to Merapi magma Gapur . 's Society must be understood about Merapi , because it could be in a normal state , Merapi issued gust dangerous , " said Joko .