TY - JOUR
T1 - Magnitude determination using strong ground-motion attenuation in earthquake early warning
AU - Lin, Ting Li
AU - Wu, Yih Min
N1 - Publisher Copyright:
Copyright 2010 by the American Geophysical Union.
PY - 2010/4/1
Y1 - 2010/4/1
N2 - We use 1661 strong-motion accelerograms with peak ground acceleration (PGA) larger than 80 Gal (1 Gal = 1.0 cm/s2) from 77 earthquakes recorded by the Taiwan Strong Motion Instrumentation Program (TSMIP) stations to derive a strong-motion attenuation relationship. This relationship can be used to dynamically define a “Mpga magnitude” for earthquakes using earthquake locations determined by earthquake early warning process. The Mpga magnitude using this strong-motion attenuation relationship corresponds well with Mw given a sufficient number of PGA readings. MEMS (Micro Electro Mechanical Systems) acceleration sensor could be widely used for ground motion monitoring purposes. Thus, we propose that once a large earthquake has begun, that we might be able to use strong, near-field (tens of kilometers) PGA values to quickly estimate the earthquake's magnitude, which would improve earthquake early warning.
AB - We use 1661 strong-motion accelerograms with peak ground acceleration (PGA) larger than 80 Gal (1 Gal = 1.0 cm/s2) from 77 earthquakes recorded by the Taiwan Strong Motion Instrumentation Program (TSMIP) stations to derive a strong-motion attenuation relationship. This relationship can be used to dynamically define a “Mpga magnitude” for earthquakes using earthquake locations determined by earthquake early warning process. The Mpga magnitude using this strong-motion attenuation relationship corresponds well with Mw given a sufficient number of PGA readings. MEMS (Micro Electro Mechanical Systems) acceleration sensor could be widely used for ground motion monitoring purposes. Thus, we propose that once a large earthquake has begun, that we might be able to use strong, near-field (tens of kilometers) PGA values to quickly estimate the earthquake's magnitude, which would improve earthquake early warning.
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U2 - 10.1029/2010GL042502
DO - 10.1029/2010GL042502
M3 - Article
AN - SCOPUS:79952978329
SN - 0094-8276
VL - 37
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 7
M1 - GRL26896
ER -