Review and Development of Ground Motion and Airblast Instrumentation.

The overall objective of this report is to discuss the design and use of instruments for measuring large amplitude ground motion and airblast waves induced by explosions. We consider the environment and possible observing techniques of airblast due to chemical and nuclear explosives. Airblast measurements were made on HARDPAN I-2B. After reviewing the state-of-the-art for ground stress gauges, we provide details of stress instruments using quartz and lithium niobate. We describe potential reductions in the 'zero-shift' anomaly that plagues precise accelerometer measurements. (Author)