This conference was prompted by the occurrence of 5 encounters between passenger jetliners with drifting clouds of volcanic ash from the 1989-90 eruptions of Re

The symposium's aims were to encourage improvements in the detection, tracking, and warning of volcanic ash hazard so that aircraft may avoid ash clouds, and to

Explanation of eruptions, lava flows and glacier melting on Redoubt Volcano on the west shore of Cook Inlet, southern Alaska, near Anchorage in 1989 and 1990.