A Deep-Towed Explosive Source for Seismic Experiments on theOcean Floor

用于海底地震实验的深拖炸药源

• 批准号: 8700806
• 负责人: G. Michael Purdy
• 金额: $ 24.19万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-06-15 至 1990-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8700806&HistoricalAwards=false
• 关键词: Deep; Towed; Explosive; Source; Seismic

This award will support the construction of a new seismic sound source that, for the first time, will allow precise measurements to be made of the structure of the uppermost igneous crust in the deep ocean at scales of 10-100 meters. The optimal way to carry out such an experiment is to place all of the equipment on the seafloor. Although ocean-bottom seismometers have existed for a number of years, there has been no ability to generate acoustic energy in deep-sea environment. The towed, high-power, low frequency seismic source to be developed will allow researchers to tackle problems on a scale, and with a precision, that has previously been unapproachable. As many as 35 explosive charges can be detonated in one lowering of the instrument package, allowing long profiles of sea-flow features such as hydrothermal vent fields, axial volcanoes and basalt flows. A prototype system has been developed and used previously. The present award will allow construction of a final system.

该奖项将支持建设一个新的抗震 第一次，可以精确地 对最上面的结构进行测量 深海中10-100米尺度的火成地壳。 进行这种实验的最佳方法是将所有 海底设备的一部分。 虽然海底 地震仪已经存在了很多年， 在深海环境中没有产生声能的能力。 拖曳式大功率低频地震源 开发的技术将使研究人员能够大规模解决问题， 并且精确到前所未有的程度。 一次可以引爆多达35个炸药 降低仪器包，允许长剖面 海流特征，如热液喷口区、轴向 火山和玄武岩流 一个原型系统已经 以前开发和使用的。 本奖项将允许 构建最终系统。