Modernization of Existing Long-Base Strainmeters at Pinyon Flat and Durmid Hill

这笔赠款用于支持加州Pinon Flat天文台（PFO）和Durmid Hill（DH）现有长基线激光应变仪的现代化。 新的激光，真空，温度硬件和控制软件组件将被添加，使这些现有的激光应变仪仪器运行相同的标准作为新的仪器正在安装的板块边界观测项目的一部分。 这些升级将允许现场自动化和远程诊断监控，无需多次现场访问，从而降低长期运营和维护成本，并提高数据质量。 PFO和DH激光应变仪测量沿着南加州的太平洋/北美板块边界的随时间变化的变形，具有极高的灵敏度，升级后的仪器补充了作为EarthScope/PBO的一部分安装的GPS、钻孔和激光应变仪仪器，以了解活动板块边缘的大陆变形和地震过程的动力学。 将通过网络免费提供升级仪器的原始数据和数据产品。 来自PFO和DH的长时间序列数据提供了一个有价值的基线，可以并将与来自板块边界观测站（PBO）的新数据进行比较。

Funds from this grant support modernization of the existing long-baseline laser strainmeters at Pinon Flat Observatory (PFO) and Durmid Hill (DH), California. New laser, vacuum, temperature hardware, and control-software components will be added to make these existing laser strainmeter instruments operate to the same standards as new instruments being installed as part of the Plate Boundary Observatory project. The upgrades will allow for onsite automation and remote diagnostic monitoring, eliminating the need for many onsite visits and therefore reducing long term operating and maintenance costs and improving data quality. PFO and DH laser strainmeters measure of time-dependent deformation along the Pacific/North-American plate boundary in southern California with extreme sensitivity and the upgraded instruments complement GPS, borehole and laser strainmeter instruments being installed as part of EarthScope/PBO in an effort to understand the dynamics of continental deformation and earthquake processes at an active plate margin. Raw data and data products from the upgraded instruments will be made freely accessible via the web. The long time series Data from PFO and DH provide a valuable baseline, against which new data from the Plate Boundary Observatory (PBO) can and will be compared.