Fig. 2: Harmonic decomposition for the RFs data at the IOCA and IMTC stations. | Communications Earth & Environment

Fig. 2: Harmonic decomposition for the RFs data at the IOCA and IMTC stations.

From: Progressive underplating of mafic material at mid-crustal depth beneath Ischia volcano, Italy

Fig. 2

The k = 0 term is a weighted stack of the radial RFs (a, e), and epicentral distribution of the teleseisms used (b, f). The k = 1 term of the harmonic decomposition, as sum (c, g) and difference (d, h) of R and T. N–S and E–W labels indicate the cosine and sine terms of the harmonic decomposition, respectively.

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