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Earth, Planets and Space
Fig. 4 | Earth, Planets and Space

Fig. 4

From: Observation of the long-period monotonic seismic waves of the November 11, 2018, Mayotte event by Iranian broadband seismic stations

Fig. 4

a Focal mechanisms for the MVLP (top) and May 15 (bottom) events. The MVLP MT, which is defined by averaging the MTs of 21 VLPs proposed by Cesca et al. (2019), shows a vertical CLVD, while the focal mechanism for May 15 indicates dominant strike-slip faulting with a NW–SE-directed P-axis and NE–SW-directed T-axis. The relative components of the MVLP MT are defined as Mrr = − 1.0, Mtt = 0.7, Mpp = − 0.1, Mrt = − 0.3, Mrp = 0.8, and Mtp = − 0.2, and the May 15 MT is obtained from the GCMT catalogue. b Azimuthal radiation pattern for surface waves at a frequency of 0.06 Hz considering the moment tensors for the MVLP (top) and May 15 (bottom) events with source depths at 28 and 17 km, respectively. The black circles show the relative spectral displacement amplitude on a linear scale for each pair of Rayleigh and Love waves. The red arrow points to station ASAO

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