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Official Journal of the Asia Oceania Geosciences Society (AOGS)

Geoscience Letters Cover Image

Table 1 Identified multiplet groups (excluding doublets), depths, back azimuth, and mean of geographical distances

From: Multi-channel waveform clustering: a first look at microseismic multiplets from coalbed methane stimulation

Area Multiplet group Color Number of events Depth (m)
Mean ± std. dev.
Back Azimuth (°)
Mean ± std. dev
Averaged pairwise distances (m)
A 1 Orange 7 570 ± 2.1 231 ± 3.1 6.1
2 Dark blue 3 567 ± 1.5 230 ± 0.6 2.5
3 Blue 3 567 ± 0.6 229 ± 4.8 9.6
4 Green 6 567 ± 0.8 232 ± 4.6 8.2
5 Purple 3 573 ± 0.6 234 ± 3.9 7.2
B 1 Dark green 4 577 ± 0.8 208 ± 2.4 5.4
2 Bluish green 3 575 ± 0.6 208 ± 1.4 3.5
3 Red 8 576 ± 1.4 210 ± 5.8 10.4
C 1 Magenta 3 582 ± 1.2 212 ± 0.3 10.3