Krakatau volcano, in Indonesia, showed its destructive vigor when it exploded in 1883 <Self and Rampino, 1981>. The eruption and subsequent tsunami caused more than 35,000 casualties along the coasts of the Sunda Strait. In 1928, the 'child' of Krakatau, Anak Krakatau, emerged from the sea at the same location as its predecessor and has since grown to a height of 315 meters. The volcano exhibits frequent activity-on average one large eruption every four years-yet again posing risk for the coastal population of Java and Sumatra and for the economically important shipping routes through the Sunda Strait.