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Official Journal of the Asia Oceania Geosciences Society (AOGS)

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