"Early models of the collapse 상명대용달이사 were based on satellite imagery that only looked at the subaerial parts of the volcano," the British Geological Survey scientist told BBC News. "Our bathymetry is 지방시여성의류=지방시여성의류 imaging at 200m water depths and we are seeing triangular-shaped blocks, which are basically coherent and they formed, before the collapse, the southwestern flank of Anak Krakatau." The debris field runs out to 2,000m from the 로에베남자지갑=로에베남자지갑 volcano. A seismic survey also conducted by the team shows how this material is layered on top of older deposits. Crucially, the underwater imaging has 레플리카신발=레플리카신발 allowed Prof Tappin's team to revise its estimate for the volume of rock involved in the flank failure. And it's smaller than previously thought. Calculations based on above-water measurements of what was left of the once 335m-high volcano had suggested a figure of 0.27 cubic km. The new assessment now points to 0.19 cubic km sliding into the ocean, almost 200 million cubic metres.