SEISMOMETERS, SEISMOGRAPHS, SEISMOGRAMS 1. What is a ...

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PORTABLE ARRAYS > many countries possess portable instruments used for temporary field campaigns > Canada: POLARIS (Portable Observatories for Lithospheric Analys<strong>is</strong> and Research Investigating Se<strong>is</strong>micity > can be used in aftershock or structural studies 45 o N 50 o N 55 o N 60 o N 65 o N BATHOLITHS CANOE CNSN POLARIS OTHERS 144 o W 136 o W 128 o W 120 o W 112 o W
makeshift vaults with solar power > data archived onto loggers that record continuously > typical deployment 1-2 years PORTABLE ARRAY VAULTS
Page 1 and 2: SEISMOMETERS, SEISMOGRAPHS, SEISMOG
Page 3 and 4: A modern seismograph records ground
Page 5 and 6: SEISMOMETERS MEASURE GROUND MOTIONS
Page 7 and 8: damage ~ force ~ acceleration Durin
Page 9 and 10: SHORT/LONG PERIOD SEISMOMETERS & GE
Page 11: STRONG MOTION SEISMOGRAPHS > made f
Page 14 and 15: GLOBAL SEISMIC NETWORKS > 150+ stat
Page 16 and 17: SOUTH POLE SITE > some sites involv
Page 18 and 19: HIGH PRECISION SEISMOMETERS > highl
Page 20 and 21: REGIONAL SEISMOGRAPH NETWORKS > Jap
Page 22 and 23: PACIFIC NORTHWEST SEISMIC NETWORK >
Page 26: new generation of portable experime
Page 29 and 30: Many ways to extract information fr
Page 31 and 32: REGIONAL SEISMOGRAMS > higher frequ
Page 33 and 34: equires knowledge knowledge of mode
Page 35 and 36: TELESEISMIC IMAGING > waves generat
Page 37 and 38: t1 t2 = SOLUTION 1. Solve for V1 u
Page 39 and 40: GLOBAL SEISMIC TOMOGRAPHY > model E
Page 41 and 42: WHAT DOES TOMOGRAPHY TELL US ABOUT
Page 43 and 44: TOMOGRAPHY & WADATI-BENIOFF ZONES >
Page 45: Cascadia not as active as some s.z.

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