1. CONSIDERATIONS FOR FUTURE SEISMIC SYSTEMS Bob Nigbor USC

2. No Technological Barriers Exist to Real- Time, Automated Data Processing

3. Immediate Parametric Information Will Be the Expectation The JMA Intensity Calculation uses a special FIR filter the matches the passband of the SHINDOF instrument exactly. K = 1.75Slope of top of filter f0 = 0.5 HzCut off frequency of high pass filter Fc = 10 HzCut off frequency of low pass filter Wn = [1 - exp[(-Fn/f0)3]]1/2 * (K/Fn)1/2 * 1/ [1 + 0.694 * (Fn/Fc)2 + 0.241 * (Fn/Fc)4 + 0.0557 * (Fn/Fc)6 + 0.009664 * (Fn/Fc)8 + 0.00134 * (Fn/Fc)10 + 0.000155 * (Fn/Fc)12]1/2 Figure 1 IJMA Bandpass FIR Filter Equation The JMA Intensity is calculated from the KAWASUMI equation IJMA = 2 * log(acceleration) + 0.7 Example: JMA Intensity Calc in SMA Firmware

4. Future SMA’s Will Be Powerful The 3x3” UCSD/HPWREN CerfCube, the basis of a new strong motion monitoring concept that runs a Linux operating system, consists of a high-performance Intel StrongARM 1110 processor with 32 MB RAM and 16 MB Flash. CerfCube

5. Structural Monitoring Systems Will Be Powerful

6. What Instrumentation Do We Need to Enhance/Improve Strong Motion Data? 1.What improvements in SMA’s are needed to eliminate “corrections” and allow automated processing? 2.What (non-acceleration) sensors are needed to get us closer to our engineering information needs?

7. Uni-axial Accelerometer Tri-axial Accelerometer Rotation Sensor Displacement TransducerPressure Cell and Sensor DIVERSE SENSING FOR STRONG-MOTION

8. How Can Seismic Data=Strong Motion Data?  What can be done to make the low- gain components of seismic network data acceptable to our engineering needs?  How can our engineering needs drive the low-gain components of ground motion networks?

9. Primary Participants or Secondary Data Users? Seismic Monitoring Waveform data & metadata Products: Engineering products Emergency response products Public Products Other

10. A Star Trek Future? Captain Kirk: Computer, what are the parameters of that earthquake on the planet? Computer: I’m sorry Captain, I must get my PhD’s together to process the data and develop a consensus. Come back in a few days.