Twitter Video. Krakatau Joins Indonesian Volcanic Awakening. A growing number of volcanoes along Indonesia’s portion of the Pacific “ring of fire” have moved from simmer to boil, including Anak Krakatau, the cone that’s building where Krakatoa catastrophically exploded in 1883. .
I sent a query about Krakatau to James Reynolds, a self-described “extreme videographer” who races to chronicle volcanic eruptions and typhoons in the tradition of tornado chasers in the United States. Windows to the Universe. Moment magnitude scale. Historical context[edit] The Richter scale; a former measure of earthquake magnitude[edit] In 1935, Charles Richter and Beno Gutenberg developed the local magnitude ( ) scale (popularly known as the Richter scale) with the goal of quantifying medium-sized earthquakes (between magnitude 3.0 and 7.0) in Southern California.