SGER - Seismometers on CORKS: Design Plans

SGER - 软木塞上的地震仪：设计计划

• 批准号: 0450318
• 负责人: Ralph Stephen
• 金额: --
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2006-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0450318&HistoricalAwards=false
• 关键词: SGER; Seismometers; CORKS; Design; Plans

Some future IODP and borehole observatory science will likely involve the addition of various geochemical, biological, and geophysical sensors to CORKs. This program will investigate design requirements for the addition of very low frequency geophones or MEMS seismometers to CORKs and will research data acquisition strategies and technologies for both autonomously powered and cable-powered CORK seismic instrumentation. The seisCORKs could ultimately prove helpful for conducting offset VSPs long after CORK installation and for acquiring "time-lapse" VSPs that may be able to document hydrologically-driven changes related to slow crustal deformation or variations in in situ pressure conditions as a result of drilling. SeisCORKs could also eventually be used for monitoring microearthquakes, conducting crosshole tomographic experiments, and completing coincident hydrologic and seismic measurements. Ongoing studies of the hydrogeology of the Juan de Fuca crust are the most immediate potential application of seisCORK technology. The project has broader implications for IODP and ORION/OOI science and represents a potential expansion of the capabilities of well-tested borehole instrumentation to provide alternate types of data. The program will produce a report on the feasibility and design requirements for seisCORKs.

一些未来的IODP和钻孔观测科学可能会涉及到增加各种地球化学，生物和地球物理传感器的CORKs。 该计划将研究在CORK中添加甚低频地震检波器或MEMS地震仪的设计要求，并将研究自主供电和电缆供电的CORK地震仪器的数据采集策略和技术。seisCORKs最终可能被证明有助于在CORK安装后很长时间内进行偏移VSP，并有助于获取“延时”VSP，这些VSP可能能够记录与缓慢地壳变形相关的水文驱动变化或钻井导致的原位压力条件变化。 SeisCORKs最终也可以用于监测微地震，进行跨井层析实验，并完成同步水文和地震测量。 正在进行的胡安德富卡地壳水文地质研究是seisCORK技术最直接的潜在应用。 该项目对IODP和ORION/OOI科学具有更广泛的影响，并代表了经过良好测试的钻孔仪器提供替代类型数据的能力的潜在扩展。 该方案将编写一份关于地震反应堆可行性和设计要求的报告。