David Yamaguchi

"... j to the most recent eruption, in I May 1980. "Basically, we were able tb reconstruct everything the J no did in detail for the last 500 «years," said David K. Yamaguchi, t the author of the report. J The wide variance in regrowth on the land around Mount !$t. Helens mimics the pattern of J trees that began growing after the ..."

"... suddenly dropped several feet, followed by a tidal wave called a tsunami. Also, tree ring studies of western cedars on the southem Washington Coast by University of Colorado forester David Yamaguchi indicate the trees died about 300 years ago when they were submerged by a tsunami. Brian Atwater, a University of Washington geophysicist, says Adams nas reinforced the evidence for major ..."

"... blast of 1480 to the most recent eruption, in May 1980. "Basically, we were able to reconstruct everything the volcano did in detail for the last 500 years," said David K. Yamaguchi, the author of thc report. The wide variance in regrowth on the land around Mount St. Helens mimics the pattern of trees that began growing after the eruption of 1480, ..."

"... conducted by Vincent and Ray Weldon ot the University of Oregon, and Mark Richards at Berkeley. Dozens of dead western cedar trees along Washington's southem coast wero studied by David Yamaguchi, a forester at thc Uni- of Colorado at Boulder. Yamaguchi said that by dating the trees' rings, he determined they all died suddenly about 300 years ago, when coastal land suddenly dropped a major quake anu tsunamis submerged tne trees. ..."