Electronic Supplement to
Empirical MwML, mb, and Ms Conversions in Western China

by Chi-Chia Tang, Lupei Zhu, and Rong Huang

Table S1. Correction Function of ML (R(Δ))

Δ (km) Zone 1 Zone 2 Zone 3
5 2.0 2.0 2.0
10 2.1 2.1 2.0
15 2.2 2.2 2.1
20 2.3 2.3 2.2
25 2.5 2.5 2.4
30 2.6 2.6 2.6
35 2.8 2.8 2.7
40 2.8 2.9 2.8
45 2.9 3.0 2.9
50 3.0 3.1 3.0
55 3.1 3.2 3.1
60 3.2 3.2 3.2
70 3.2 3.2 3.2
75 3.3 3.3 3.3
85 3.3 3.4 3.3
90 3.4 3.5 3.4
100 3.4 3.5 3.4
110 3.6 3.6 3.5
120 3.6 3.6 3.5
130 3.6 3.7 3.6
140 3.6 3.7 3.6
150 3.7 3.8 3.7
160 3.7 3.7 3.7
170 3.8 3.8 3.8
180 3.8 3.8 3.8
190 3.9 3.9 3.9
200 3.9 3.9 3.9
210 3.9 4.0 3.9
220 4.0 4.0 3.9
230 4.0 4.1 4.0
240 4.0 4.1 4.0
250 4.1 4.1 4.0
260 4.1 4.1 4.1
270 4.2 4.2 4.2
280 4.1 4.1 4.1
290 4.2 4.2 4.2
300 4.3 4.2 4.3
310 4.4 4.3 4.4
320 4.4 4.3 4.4
330 4.4 4.4 4.5
340 4.4 4.4 4.5
350 4.5 4.5 4.5
360 4.5 4.5 4.5
370 4.5 4.4 4.5
380 4.5 4.5 4.6
390 4.5 4.5 4.6
400 4.6 4.5 4.7
420 4.7 4.6 4.7
430 4.7 4.7 4.8
440 4.8 4.8 4.8
450 4.8 4.8 4.8
460 4.8 4.8 4.8
470 4.8 4.8 4.8
500 4.8 4.8 4.8
510 4.9 4.9 4.9
530 4.9 4.9 4.9
540 4.9 4.9 4.9
550 4.9 4.9 4.9
560 4.9 4.9 4.9
570 4.9 4.9 4.9
580 4.9 4.9 4.9
600 4.9 4.9 4.9
610 5.0 5.0 5.0
620 5.0 5.0 5.0
650 5.1 5.1 5.1
700 5.2 5.2 5.2
750 5.2 5.2 5.2
800 5.2 5.2 5.2
850 5.2 5.2 5.2
900 5.3 5.3 5.3
1000 5.3 5.3 5.3

The intervals of Δs are not equal in different distance ranges. The function table is provided by the China Earthquake Administration.

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