Open-File Report 03-159
IntroductionThe length of Evans et al. (2003) necessitated transfer of several less germane sections to this alternate forum to meet that venues needs. These sections include a description of the development of Figure 1, the plot of spatial variability so critical to the argument for dense arrays of strong-motion instruments; the description of the rapid, integer, computational method for PGV used in the TREMOR instrument (the Oakland instrument, the commercial prototype, and the commercial instrument); siting methods and strategies used for Class B TREMOR instruments and those that can be used for Class C instruments to preserve the cost advantages of such systems; and some general discussion of MEMS accelerometers, includ-ing a comparative Table with representative examples of Class A, B and C MEMS devices. (MEMS means Micro-ElectroMechanical Systemsmicromachined sensors, generally of silicon. Classes A, B, and C are defined in Table 1.) |
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Evans, John R., Hamstra, Robert H., Jr., Spudich, Paul, Kundig, Christoph, Camina, Patrick, Rogers, John A., 2003, Additional information for “TREMOR: A Wireless, MEMS Accelerograph for Dense Arrays” (Evans et al., 2003): U. S. Geological Survey Open-File Report 03-159, 13 pp., http://pubs.usgs.gov/of/2003/0159/.