WHAT HAPPEN if THESE VOLCANO MOUNTAINS are STARTING to ACTIVE?

As a country located in an active seismic area "ring of fire", it is normal to have seismic activities such as earthquakes and activated volcanoes through the daily life of Indonesian. Both circum Eurasian tectonic in southern Indonesian islands (exactly west and south Sumatra Island Java Island) and Pacific Ridge in the Northeast is known as the most active tectonic lines in the world. Some literatures stated that earthquakes and volcanic activity is closely related to each other. This is clearly evident in 2006 when activity volcanoes including mount Merapi as it writhed along with the earthquake in Yogyakarta, Java, May 27, 2006 or July 17, 2006 on the southern coast of Pangandaran which was resulting tsunami. Even when the earthquake occurred on May 27, 2007 Yogyakarta, many residents thought that the vibration was came from Merapi, since the mountain had to ‘cough’ several times previously in the north of Yogyakarta. Instead, earthquake was precisely 'attack' from the south of Yogya that claimed many casualties and great losses at the time.

My concern now is that the natural condition is almost similar to the 2006. As I type this article, according to BMG reports; there are about 21 mountain activities of about 300 volcanoes in Indonesia.
From the 21 volcanoes, 2 of them have 'siaga' or secondary warning, which are Gunung Ibu in Northern Maluku and Gunung Karangetang, Northern Sulawesi.

19 Volcanoes which have 'waspada' or first warning from their activity:
1. Gunung Seulawah (Aceh)
2. Gunung Sinabung (Karo, Sumut)
3. Gunung Talang (Solok, Sumbar)
4. Gunung Kaba (Bengkulu)
5. Gunung Kerinci (Jambi)
6. Gunung Anak Krakatau (Lampung)
7. Gunung Papandayan (Garut, Jabar)
8. Gunung Slamet (Jateng)
9. Gunung Bromo (Jatim)
10. Gunung Semeru (Lumajang, Jatim)
11. Gunung Batur (Bali)
12. Gunung Rinjani (Lombok, NTB)
13. Gunung Sangeang Api (Bima, NTB)
14. Gunung Rokatenda (Flores, NTT)
15. Gunung Egon (Sikka, NTT)
16. Gunung Soputan (Minahasa Selatan, Sulut)
17. Gunung Lokon (Tomohon, Sulut)
18. Gunung Gamalama (Ternate, Maluku Utara)
19. Gunung Dukono (Halmahera Utara, Maluku Utara)

While a large earthquake has occurred with 7.2 M the Mentawai Islands accompanied by tsunami is one of the effects of the rise of the Eurasian tectonic activity and they are closely related to one another. Mount Talang in West Sumatra, in this case most associated with the Mentawai quake, one thing is that almost similar to the Merapi and the 2006 earthquake in Bantul Yogyakarta. According to the record, the year of1981 was a quake occurred in Yogyakarta when Mount Merapi was also being active with peak of eruption occurred on June 15, 1984.

Figure. Relation between earthquake (as result of plates subduction) and volcanoes

Although it already denied by Indonesian Geological board, and still needs to be proven by some more data, we deserve to be careful and vigilant in this matter. I do not intend to worst the recent Merapi situation with another disaster by this article. However, we don’t know if the things we thought might be happen. Hopefully the Saturday, October 30 eruption of Merapi early days ago was the last time and not will be followed by earthquake that can cause disasters. Let us keep praying and trying so the disaster far away and does not always come in this country.

UPDATE!
November 9th, 2010

After the Merapi’s massive eruption in the early morning on Friday 5th November 2010, today it had followed by a middle magnitude 5.6 M earthquake in southern of Bantul after 4 M stroke southern area of Wonosari lastweek. Based on information received from BMKG Yogyakarta, the quake occurred at 8.98 south latitude (LS) and 110.08 east longitude (BT) at 125 km southwest of Bantul regency, Yogyakarta at a depth of 10 km located in the sea.

Though it was not powerful in Yogyakarta, but could be felt in some regions in Central and West Java. The most important is that this quake did not as destructive earthquake. That's what I worry about the quake. By this already occurrence,an earthquake in the south of Merapi Volcano, I hope it will not followed by other. Amen