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休眠长达123年之久的海伦斯火山,自1980年发生一系列喷发活动包括使人触目惊心的5月18日的一次大喷发以来,已成为人们研究的中心;并比对历史上任何一座火山都研究得更为详细和彻底。美国地质调查局派出的约65人组成的两支考察队正在华盛顿州内的山脉上勘查。由科学家、技术员、野外人员和公务员等25人组成的一支地质考查队正在监测和研究火山与地震活动的情况。另一支由30名专家组成的水源考察队也正在对不断发生变化的排水系统进行观测,以便预测出可能发生的洪水危险并向下游居民或公司企业发生警报。
The Helens volcano, which has been asleep for 123 years, has become a center of research since a series of eruptions in 1980, including the astonishing May 18, a massive eruption; and compared to any volcano in history Have studied more detailed and thorough. Two expeditions of approximately 65 people dispatched by the United States Geological Survey are being surveyed in the mountains of Washington State. A team of 25 geological experts, including scientists, technicians, field workers and civil servants, is monitoring and studying volcanic and seismic activity. Another 30-expert water expedition is also observing a changing drainage system to anticipate possible flood risks and alert downstream residents or companies.