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1981年9月13～16日,地质学家、地震学家和工程师们在美国田纳西州诺克斯维尔(Kn-oxville)聚集一堂,讨论了美国东部的地震问题。地质学家和地震学家们感到有些自豪的是,终于对东部的地震,如1811—1812年新马德里(密苏里州)破坏性地震有所认识。可是这些科学家们首次承认,他们报不出下一次东部大地震的震级和地点,特别是时间。这使工程师们深为焦虑不安。他们想确切知道自己所希望知道的一切。但是甚至面临这样的不确定性,工程界为了加紧和使抗震设计建筑程序标准化,还是在争吵声中缓慢地前进。科学家们对新马德里附近的东部地震最为
Sept. 13-16, 1981 Geologists, seismologists and engineers gathered at Kn-oxville, Tenn., To discuss the earthquake in the eastern United States. Geologists and seismologists feel somewhat proud that they finally realized something about the earthquakes in the east, such as the devastating earthquake that struck New Madrid (Missouri) in 1811-1812. But for the first time, these scientists admitted that they could not report the magnitude and location of the next major earthquake in the east, especially the time. This makes engineers deeply anxious. They want to know exactly what they want to know. However, even with such uncertainties, the engineering community has been slow to move forward in the quarrel in order to step up and standardize its design procedures for seismic design and construction. Scientists are most concerned about the eastern earthquake near New Madrid