2004 Indian Ocean earthquake and tsunami and a network of sensors is needed to detect it. Setting up the communications infrastructure to issue timely warnings is an even bigger problem, particularly in a relatively impoverished part of the world. Tsunamis are more frequent in the Pacific Ocean than in other oceans because of earthquakes in the "Ring of Fire". Although the extreme western edge of the Ring of Fire extends into the Indian Ocean (the point where the earthquake struck), no warning system exists in that ocean. Tsunamis there are relatively rare despite earthquakes being relatively frequent in Indonesia. The last major tsunami was caused by
Ring of Fire (Buffy comic) for power of epic proportions. A new confrontation is developing over who can be the master the Ring of Fire, and with Giles barely functioning sanely, Buffy, Willow, Xander, and Kendra must try to avert a disaster. With the exception of the season 8 comics also released by Dark Horse, which are written by Joss Whedon, Buffy comics are not usually considered by fans as canonical. However, unlike fan fiction, overviews summarising their story, written early in the writing process, were 'approved' by both Fox and Joss Whedon (or his office), and the books were therefore later published as official