Seismicity and Tremor in a Submarine Hydrothermal Vent Field

1988年夏天，首席研究员测量了 的热液喷口区及其附近的微震活动 胡安·德富卡海岭的奋进段。一个非常令人惊讶 结果是大量（数百）地震事件， 观察了首席调查员认为他已经 首次观察到长时间震颤 海底热液区大量的和 这些事件的不寻常性质使这一数据集独一无二。的 主要研究者将：1）构建事件数 与尽可能多的事件的相对震级曲线; 2） 描述事件的频谱; 3）分析时间 事件的变异性，并与高频数据进行比较 一个活跃的热液烟囱附近

In the summer of 1988 the principal investigator measured microseismicity in and near the hydrothermal vent field of the Endeavor segment of the Juan de Fuca Ridge. A very surprising result was the large number (hundreds) of seismic events that were observed. The principal investigator thinks he has made the first observation of long duration tremor associated with a submarine hydrothermal field. The large number and unusual nature of these events make this data set unique. The principal investigator will: 1) construct a number-of-events vs. relative magnitude curve for as many events as possible; 2) characterize the spectra of the events; and 3) analyze the time variability of the events and compare with high-frequency data from near an active hydrothermal chimney.