Toba No Longer Belongs to Indonesia

Toba No Longer Belongs to IndonesiaCOMPASS IMAGES / FIKRIA HIDAYAT valley area is an area in District Siatasbarita Sumatra fault, Tarutung, North Tapanuli, North Sumatra, Sunday (24/07/2011). In ancient times, the valley is estimated to pile avalanches due to fault movement.
KOMPAS.com - Is Van Bemmelen, Dutch geologist, who may be appointed as his father's theory as the Toba caldera volcano. In 1939 he was assigned to investigate the Government of the Netherlands Lake Toba and finally found evidence that beautiful lake is a giant volcanic caldera.

The finding could lead to controversy. However, in some countries, like Malaysia and India, later identified volcanic ash was found originating from the Toba eruption. Theory Bemmelen started slowly but surely accepted by society until now.
Van Bemmelen was the originator of the theory that the Toba caldera originated from a massive eruption. This theory is supported by Aldiss and Ghazali. However, through the calendar by the method of radiometry, the researchers managed to reveal that after the Toba eruption comes from four major eruptions. Several researchers, among them, Vestappen (1961), Yokoyama and Hehanusa (1981), Nishimura (1984), Knight (1986), and Chesner and Rose (1991).
Craig A Chesner, professor of geology from Eastern Illinois University, is still actively researching Toba today. Chesner thesis about the Toba Supervolcano clarify the position as the Toba eruption of global impact.
Chesner is the man who gives way for the birth of the embryo Toba Catastrophe theory when he sent samples of the Toba volcanic ash to researcher John Westgate (University of Toronto) in 1994. Westgate when it was trying to figure out the origin of volcanic ash that was 74,000 years ago are scattered in various parts of the world.
Posts Toba volcanic ash from the end of the search Chesner Westgate. In 1998, Stanley H. Ambrose of the University of Illinois at Urbana-Champaign to build a new theory that offers analysis of the Toba Catastrophe that the Toba eruption has made the world experienced drastic temperature drop and make the human population is almost extinct.
L Michael Rampino (New York University), Stephen Self (University of Hawaii at Manoa), then Greg Zielinski (University of Massachusetts) is an influential researcher who deeply studied the Toba volcanic ash materials. It is they who provide the data for the birth of the Toba Catastrophe theory is believed to make the human population bottlenecks.
Toba Catastrophe Theory further sharpened by a British genetics researcher who is an expert synthesis of DNA, Stephen Oppenheimer. Related Toba, Oppenheimer supported Bradshaw Foundation has released the human migration to the title Journey of Mankind. Writings that accompanied human migration simulations gave an important position which is considered the Toba eruption giving birth drastic changes in the genetic races of Homo sapiens.
However, Toba and migration theory was just reverberating in international debates on the outside of Indonesia. Until now, Indonesia is still devoid of interest in Toba. (Arif Ahmad, Indira Permanasari, Amir Sodikin, M Hilmi Faiq)