Construction and Deployment of a Seafloor Interferometric Optical Fiber Strainmeter

私人投资机构要求提供资金，提议设计和测试一种新型海底应变计，其灵敏度将远远高于以前用于海底的应变计。PI将在海底安装传感器，并通过观测固体地球应变潮汐来确定其噪音底线、响应和灵敏度，固体地球应变潮汐的幅度约为50纳米应变。通过成功开发该仪器，可以解决许多科学目标，包括缓慢地震(幕式震动和滑动)、火山膨胀和通货紧缩、板块中部应变信号、传播中心事件和可能的海底滑动前兆。广泛影响：拟议的设备有可能成为高质量海底观测站的标准仪器，允许实时大地测量和评估海底滑坡、断层和火山的危险。监测海洋地区的微小构造应变将提供迄今无法获得的精度的新数据。

The PIs request funding to propose to design and test a new type of seafloor strainmeter that will have sensitivity much higher than has been available previously for seafloor use. The PIs will install the sensor on the seafloor and establish its noise floor, response, and sensitivity by observing the solid Earth strain tides, which have an amplitude of approximately 50 nanostrain. Many scientific targets, including slow earthquakes (episodic tremor and slip), volcanic inflation and deflation, mid-plate strain signals, spreading center events, and possible seafloor slide precursors, can be addressed by successfully developing this instrument.Broader Impacts: The proposed device has the potential of becoming a standard instrument for a high-quality undersea observatory, allowing real time geodetic measurements and to assess hazards from undersea slides, faults, and volcanoes. Monitoring small tectonic strains in marine areas will provide new data with a precision so far unavailable.