2010 eruptions of Mount Merapi sunlight. On 9 November 2010, the Volcanic Ash Advisory Centre in Darwin, Australia, also reported a sulfur-dioxide cloud over the Indian Ocean between , in the upper troposphere. An Australian Government Department of Foreign Affairs travel advisory bulletin issued on 18 November noted that the exclusion zone in place at that time did not include the metropolitan areas of Yogyakarta or Adisucipto International Airport. The Indonesian Government had advised that Adisucipto International Airport would be closed until at least 20 November whilst other airports in Java had been subject to periodic closure due to volcanic activity at Mount Merapi. It
Earthquake noted, which could be explained by a cyclical pattern of periods of intense tectonic activity, interspersed with longer periods of low-intensity. However, accurate recordings of earthquakes only began in the early 1900s, so it is too early to categorically state that this is the case. Most of the world's earthquakes (90%, and 81% of the largest) take place in the 40,000 km long, horseshoe-shaped zone called the circum-Pacific seismic belt, known as the Pacific Ring of Fire, which for the most part bounds the Pacific Plate. Massive earthquakes tend to occur along other plate boundaries, too, such as along the