SGER - Seismometers on CORKS: Design Plans

一些未来的IODP和钻孔观测科学可能会涉及在软木上添加各种地球化学、生物和地球物理传感器。该项目将调查在软木上添加甚低频地震检波器或MEMS地震仪的设计要求，并将研究自动供电和电缆供电的软木地震仪器的数据采集策略和技术。地震CORK最终可被证明有助于在安装软木后很长一段时间内进行偏移VSP，并有助于获得“延时”VSP，这些VSP可能能够记录与缓慢的地壳变形或钻探引起的地压条件变化有关的水文驱动的变化。SeisCORK最终还可以用于监测微震，进行井间层析成像实验，以及完成重合的水文和地震测量。正在进行的胡安德富卡地壳水文地质研究是地震核心技术最直接的潜在应用。该项目对IODP和猎户座/OOI科学具有更广泛的影响，是对经过良好测试的钻孔仪器能力的潜在扩展，以提供替代类型的数据。该计划将就地震CORK的可行性和设计要求编写一份报告。

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.