SUDDEN CARDIAC DEATH AND THE ONSET OF MYOCARDIAL INFARCTION A multifaceted community-wide study

摘要

An operational five-day forecast procedure is presented for predicting the initial data of ice-related problems at the Little Rapids Cut and the continuing degree of difficulty the Sugar Island Ferry would experience in crossing the St. Marys River at that point. The forecast procedures were developed by use of meteorological and hydrological data, aerial photographs of ice cover, and time lapse films of the motion of jammed ice toward the Sugar Island ferry crossing. It was found that ice problms had generally begun within 10 days after the water temperature in the river had reached 32F. Once ice problems began, the degree of difficulty in crossing the river, expressed in three probability categories, was forecast daily, based upon air temperatures, upstream ice cover, and shipping activity.