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• W4381279864 abstract "Abstract The attenuation characteristics of NW Himalaya and NE India region has been estimated using recorded accelerograms. In this analysis frequency dependent attenuation of P-wave, S wave and coda wave was estimated and the scattering & intrinsic attenuation are separated using Wennerberg (1993) method. The frequency dependent relation of scattering attenuation (Q S ) and intrinsic attenuation (Q I ) have also been developed for these seismically active regions. The frequency dependent relations for NW Himalaya are Q α = (67 ± 0.22) f (0.96 ± 0.001) , Q β = (68 ± 0.29) f (0.95 ± 0.002) , Q C = (107 ± 0.10) f (1.06 ± 0.0003) , Q I = (95 ± 0.06) f (1.01 ± 0.0002) and Q S = (306 ± 6.85) f (0.80 ± 0.009) for P-wave, S-wave, coda wave, intrinsic and scattering attenuation respectively. Similarly, for NE India region the frequency dependent relations are Q α = (89 ± 0.22) f (0.85 ± 0.001) , Q β = (92 ± 0.10) f (0.86 ± 0.0004) , Q C = (141 ± 0.34) f (1.02 ± 0.0009) , Q I = (120 ± 0.21) f (0.98 ± 0.0004) and Q S = (306 ± 0.66) f (0.77 ± 0.0009) for P-wave, S-wave, coda wave, intrinsic and scattering attenuation respectively. The ratio of Q β and Q α is greater than 1 for entire frequencies range considered in this analysis which indicates that both NW Himalaya and NE India regions are partially saturated with fluids. The estimated values of intrinsic (Q I ) and scattering (Q S ) attenuation shows that intrinsic attenuation is dominant in both NW Himalaya as well as NE India region. The important fact is that in both regions’ Q C lies in between Q I and Q S , which agrees with theoretical and experimental measurements. The frequency dependent of Q’s in this study suggests that both regions are highly heterogenous and low value of Q 0 ’s (i.e. Q α , Q β and Q C ) for both regions exhibits high degree of seismicity." @default.
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• W4381279864 date "2023-05-30" @default.
• W4381279864 modified "2023-09-27" @default.
• W4381279864 title "Attenuation characteristics of seismic waves beneath North-West Himalaya and North-East India region" @default.
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• W4381279864 doi "https://doi.org/10.21203/rs.3.rs-2889932/v1" @default.
• W4381279864 hasPublicationYear "2023" @default.
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