Week of Aug. 9, 2003; Vol. 164, No. 6 Large lake floods scoured New Zealand Sid Perkins From Reno, Nevada, at a meeting of the International Union for Quaternary Research Portions of New Zealand's North Island, like many volcanic regions, have experienced immense floods when lakes filling the craters of dormant volcanoes burst through the craters' rims. Now, scientists analyzing signs of erosion in the area have estimated the size of some of those powerful deluges. Some of the largest such floods originated in Lake Taupo, says Vern Manville, a geologist with the Institute of Geological and Nuclear Sciences in...