Home theater PC. A home theater PC (HTPC) or media center computer is a convergence device that combines some or all the capabilities of a personal computer with a software application that supports video, photo, audio playback, and sometimes video recording functionality.
The Pacaya volcano is a part of the Central American Volcanic Arc, a chain of volcanoes stretching from the northwest to the southeast along the Pacific coast of Central America, formed by the tectonic subduction of the Cocos Tectonic Plate beneath the Caribbean Plate.
INTRODUCTION. Mount Pinatubo's violent eruption on June 15, 1991, formed a nearly circular caldera about 2.5 km in diameter, and, beginning in September 1991, a lake began to form from spring discharge, supplemented by rainfall and surface runoff.igure 1. Progressive development of the Pinatubo caldera lake. A, Pinatubo caldera on August 1, 1991, before the caldera lake began to form (photographed from the northwest by T. Casadevall, USGS). B, Pinatubo caldera lake as seen on September 10, 1991 (photographed from the northwest by T. Pierson, USGS).