基于 scenvelope 返回的封包，计算 VS 震级
除了scvsmag.log中的标准日志信息，处理信息还可写入scvsmag-processing-info.log。典型日志如下：
1 2013/06/28 10:51:01 [processing/info/VsMagnitude] Start logging for event: sed2012cyqr
2 2013/06/28 10:51:01 [processing/info/VsMagnitude] update number: 0
3 2013/06/28 10:51:01 [processing/info/VsMagnitude] Sensor: CH..BNALP.HH; Wavetype: P-wave; Soil class: rock; Magnitude: 3.47
4 2013/06/28 10:51:01 [processing/info/VsMagnitude] station lat: 46.87; station lon: 8.43; epicentral distance: 32.26;
5 2013/06/28 10:51:01 [processing/info/VsMagnitude] PGA(Z): 3.57e-03; PGV(Z): 6.91e-05; PGD(Z): 1.62e-06
6 2013/06/28 10:51:01 [processing/info/VsMagnitude] PGA(H): 2.67e-03; PGV(H): 3.44e-05; PGD(H): 1.02e-06
7 2013/06/28 10:51:01 [processing/info/VsMagnitude] Sensor: CH..MUO.HH; Wavetype: S-wave; Soil class: rock; Magnitude: 3.83
8 2013/06/28 10:51:01 [processing/info/VsMagnitude] station lat: 46.97; station lon: 8.64; epicentral distance: 22.45;
9 2013/06/28 10:51:01 [processing/info/VsMagnitude] PGA(Z): 8.19e-03; PGV(Z): 2.12e-04; PGD(Z): 6.91e-06
10 2013/06/28 10:51:01 [processing/info/VsMagnitude] PGA(H): 2.18e-02; PGV(H): 5.00e-04; PGD(H): 1.72e-05
11 2013/06/28 10:51:01 [processing/info/VsMagnitude] Sensor: CH..WILA.HH; Wavetype: P-wave; Soil class: rock; Magnitude: 3.50
12 2013/06/28 10:51:01 [processing/info/VsMagnitude] station lat: 47.41; station lon: 8.91; epicentral distance: 41.16;
13 2013/06/28 10:51:01 [processing/info/VsMagnitude] PGA(Z): 4.38e-03; PGV(Z): 6.42e-05; PGD(Z): 1.85e-06
14 2013/06/28 10:51:01 [processing/info/VsMagnitude] PGA(H): 3.35e-03; PGV(H): 6.40e-05; PGD(H): 1.88e-06
15 2013/06/28 10:51:01 [processing/info/VsMagnitude] Sensor: CH..ZUR.HH; Wavetype: S-wave; Soil class: rock; Magnitude: 3.79
16 2013/06/28 10:51:01 [processing/info/VsMagnitude] station lat: 47.37; station lon: 8.51; epicentral distance: 23.99;
17 2013/06/28 10:51:01 [processing/info/VsMagnitude] PGA(Z): 9.17e-02; PGV(Z): 1.03e-03; PGD(Z): 1.64e-05
18 2013/06/28 10:51:01 [processing/info/VsMagnitude] PGA(H): 9.63e-02; PGV(H): 2.12e-03; PGD(H): 5.31e-05
19 2013/06/28 10:51:01 [processing/info/VsMagnitude] VS-mag: 3.69; median single-station-mag: 3.79; lat: 47.15; lon: 8.52; depth : 25.32 km
20 2013/06/28 10:51:01 [processing/info/VsMagnitude] creation time: 2012-02-11T22:45:40.00Z; origin time: 2012-02-11T22:45:26.27Z; t-diff: 13.73; time since origin arrival: 0.864; time since origin creation: 0.873
21 2013/06/28 10:51:01 [processing/info/VsMagnitude] # picked stations: 6; # envelope streams: 79
22 2013/06/28 10:51:01 [processing/info/VsMagnitude] Distance threshold (dt): 44.68 km; # picked stations < dt: 4; # envelope streams < dt: 4
23 2013/06/28 10:51:01 [processing/info/VsMagnitude] Stations not used for VS-mag: CH.HASLI CH.LLS
24 2013/06/28 10:51:01 [processing/info/VsMagnitude] Magnitude check: 0.027; Arrivals check: 0.000
25 2013/06/28 10:51:01 [processing/info/VsMagnitude] likelihood: 0.99
26 2013/06/28 10:51:01 [processing/info/VsMagnitude] End logging for event: sed2012cyqr
下表解释以上输出的每一行：
| 行 | 描述 |
|---|---|
| 1 | 事件日志信息起始 |
| 2 | 更新计数器 |
| 3-18 | 用于震级估算的台站信息，每台站四行 |
| 19 | VS 震级，单台震级中值，震源坐标 |
| 20 | 震级创建时间，初动时间等 |
| 21 | 有效台站数和封包数 |
| 22 | 至震中的距离阈值 |
| 23 | 用于拾取但不估算震级的台站 |
| 24 | VS 震级与单台震级中值之差，拾取台站数与封包流数之差 |
| 25 | 震级与到达质量条件的积 |
| 26 | 事件日志信息结束 |
scvsmag 接收的封包信息可写入日志文件envelope-logging-info.log：
vsmag.logenvelopes=true
etc/defaults/global.cfg
etc/defaults/scvsmag.cfg
etc/global.cfg
etc/scvsmag.cfg
~/.seiscomp3/global.cfg
~/.seiscomp3/scvsmag.cfg