California Earthquakes, Rockfalls, and Lichens

这项研究是在新西兰正在进行的一项工作之后进行的，该工作表明，通过使用历史上的同震落石来准确校准地衣的生长速度。这是了解地衣生长因素和史前地震的绝佳途径。将这项技术应用于加州地震多发地区将在不同的地理和地震环境中测试这项技术，并为研究和评估地震风险增加一个额外的工具。这项研究是国家减少地震灾害计划的一部分。

This research follows ongoing work in New Zealand that shows growth rates of lichen to be calibrated accurately by using historical coseismic rockfalls. This is an excellent way to learn about lichen growth factors and prehistorical earthquakes. Application of this technique to earthquake-prone California areas will test the technique in a different geographical and seismic setting and add an additional tool to the study and estimation of earthquake risk. This research is a component of the National Earthquake Hazard Reduction Program.