Evaluation of the results of automatic earthquake location systems of Anhui network
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摘要: 目前,安徽台网正在运行的自动地震定位系统包括中国地震局自动地震速报系统(AU)、江苏省地震局自动定位系统、福建省地震局自动定位系统和安徽区域地震预警系统。以2015—2019年安徽及周边省份发生的地震实例为研究对象,将上述4套系统产出的结果分别与中国地震局统一正式目录对比,结果表明这4套系统产出的结果均在地震速报要求所允许的误差范围内,在安徽区域具备适用性和实用性,但在识别双震等方面存在缺陷。同时,这几套系统之间的对比结果表明,安徽区域预警系统产出结果参数的平均发震时刻差、平均震中位置差和平均震级差都相对较小。Abstract: At present, the automatic earthquake positioning systems operated by Anhui network include the automatic earthquake report system (AU) of China Earthquake Administration, the automatic positioning system of Jiangsu, the automatic positioning system of Fujian and the Anhui regional earthquake early warning system. Taking the earthquake cases in Anhui and its surrounding provinces from 2015 to 2019 as the research object, the results of the above four sets of system have been compared with the unified official catalogue of China Earthquake Administration respectively. The results show that the outputs of these automatic systems are all within the error range allowed by the seismic fast reporting requirements, and they all have applicability and practicability in Anhui region, while there are some defects in identifying double earthquakes and false triggering by remote earthquakes. At the same time, the comparison and analysis among these systems show that the average time of the first reported positioning results produced by Anhui regional earl warning system is 15.26 seconds, and the average of the final reported positioning results is 46.56 seconds. This system has obvious advantages in the speed of automatic quick reporting, the average seismic time difference, the average epicenter position difference, and average magnitude difference of the output parameters.
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表 1 自动地震速报结果(AU)与统一正式目录(2015-01—2019-12)
Table 1. Comparison of the results of automatic earthquake early report and unified official catalog(2015-01—2019-12)
序
号正式目录 AU 正式目录 AU 正式目录 AU 参考地名 发震时刻 震中位置 震级(M) 年-月-日 时:分:秒 纬度/°N 经度/°E 纬度/°N 经度/°E 1 2015-02-01 05:14:06.04 05:14:09.3 31.415 116.191 31.42 116.13 2.6 3.1 安徽霍山 2 2015-03-14 14:13:34.23 14:13:34.4 33.052 115.830 33.04 115.87 4.0 4.2 安徽阜阳 3 2015-03-23 04:27:09.77 04:27:09.4 33.059 115.833 33.07 115.83 3.6 3.7 安徽阜阳 4 2015-05-17 10:11:18.81 10:11:18.1 32.510 119.096 32.53 119.09 3.0 3.1 安徽天长 5 2015-05-20 04:24:22.31 04:24:21.4 31.710 116.630 31.70 116.64 3.0 3.2 安徽六安 6 2015-06-17 21:29:02.33 21:29:02.4 29.693 115.741 29.70 115.72 3.7 3.7 江西九江 7 2015-06-29 04:41:11.80 04:41:11.3 33.346 116.760 33.39 116.79 3.2 3.0 安徽蒙城 8 2016-04-15 17:55:42.69 17:55:45.6 31.306 117.743 31.31 117.75 3.0 3.1 安徽无为 9 2017-04-12 02:25:36.69 02:25:35.6 30.085 119.339 30.08 119.33 3.9 3.9 浙江临安 10 2017-04-29 00:53:24.50 00:53:24.6 31.687 115.799 31.70 115.81 3.1 3.3 安徽金寨 11 2018-04-06 23:55:07.16 23:55:07.1 31.207 117.751 31.20 117.75 3.5 3.7 安徽无为 12 2018-07-02 09:55:10.82 09:55:09.4 29.589 117.623 29.70 117.58 3.6 4.1 江西浮梁 13 2018-07-10 08:35:41.50 08:35:40.9 32.183 115.452 32.16 115.46 3.5 3.6 河南固始 14 2019-03-02 08:11:27.14 08:11:26.9 31.543 119.102 31.55 119.10 2.9 3.2 江苏溧水 15 2019-04-06 11:33:35.42 11:33:35.6 31.531 119.098 31.54 119.10 2.6 3.1 江苏溧水 16 2019-04-29 05:16:37.78 05:16:38.5 30.785 118.065 30.84 118.08 2.8 3.0 安徽青阳 17 2019-11-01 15:33:02.57 15:33:02.0 32.472 117.592 32.55 117.62 3.4 3.5 安徽定远 表 2 江苏省自动地震定位结果与统一正式目录(2018-01—2019-12)
Table 2. Comparison of the results of automatic positioning system of Jiangsu and unified official catalog(2018-01—2019-12)
序
号正式目录 江苏自动 正式目录 江苏自动 正式目录 江苏自动 发震时刻 震中位置 震级(M) 年-月-日 时:分:秒 纬度/°N 经度/°E 纬度/°N 经度/°E 1 2018-01-06 03:00:26.68 03:00:25.96 32.562 116.920 32.548 116.720 1.9 2.0 2 2018-01-19 21:23:11.56 21:23:11.31 31.171 117.294 31.160 117.330 2.6 2.7 3 2018-02-09 10:37:08.89 10:37:08.15 33.555 116.607 33.541 116.584 1.9 1.9 4 2018-02-12 12:52:41.58 12:52:40.80 33.548 116.608 33.560 116.600 2.0 2.1 5 2018-02-12 18:54:41.24 18:54:41.10 32.127 117.249 32.160 117.300 1.8 1.9 6 2018-02-12 23:29:52.00 23:29:51.26 33.551 116.609 33.390 116.630 1.8 1.9 7 2018-03-23 22:57:26.75 22:57:26.5 33.085 115.308 33.060 115.260 1.6 1.7 8 2018-04-05 11:47:20.33 11:47:19.74 30.847 118.432 30.833 118.417 1.5 1.6 9 2018-04-06 23:55:07.16 23:55:05.49 31.207 117.751 31.200 117.733 3.5 3.7 10 2018-04-30 03:23:40.86 03:23:40.51 32.584 117.198 32.600 117.150 2.4 2.5 11 2018-05-14 09:17:05.64 09:17:05.95 30.576 117.097 30.567 117.083 1.6 1.7 12 2018-06-14 15:10:54.12 15:10:54.28 31.349 116.085 31.337 116.069 1.5 1.6 13 2018-06-29 14:45:24.64 14:45:25.03 30.573 117.096 30.581 117.085 2.1 2.2 14 2018-07-02 09:55:10.75 09:55:11.51 29.606 117.642 29.600 117.633 3.7 3.8 15 2018-07-05 14:12:23.16 14:12:22.10 31.403 116.176 31.400 116.183 1.6 1.8 16 2018-07-10 08:35:41.45 08:35:40.33 32.157 115.435 32.133 115.467 3.5 3.6 17 2018-07-17 23:41:10.99 23:41:10.75 31.620 116.578 31.600 116.617 2.1 2.2 18 2018-07-28 16:36:18.48 16:36:19.04 33.003 117.956 33.017 117.950 1.7 1.7 19 2018-08-08 20:05:09.74 20:05:10.47 33.073 116.696 33.083 116.700 1.6 1.6 20 2018-08-23 09:24:31.93 09:24:32.30 34.040 116.853 34.017 116.850 2.2 2.3 21 2018-08-30 14:18:23.00 14:18:23.03 32.355 118.607 32.367 118.600 1.5 1.6 22 2018-09-28 20:35:45.10 20:35:44.33 31.422 116.098 31.433 116.117 1.5 1.9 23 2018-10-26 12:55:16.55 12:55:15.61 33.459 117.004 33.467 116.983 1.4 1.7 24 2018-12-24 03:12:20.07 03:12:20.04 32.444 117.048 32.450 117.050 2.2 2.3 25 2018-12-26 16:16:18.77 16:16:18.62 32.498 117.675 32.500 117.667 1.7 1.9 26 2019-03-02 08:11:27.14 08:11:25.95 31.543 119.102 31.567 119.100 2.9 3.2 27 2019-03-18 15:56:53.08 15:56:53.17 30.722 117.928 30.717 117.917 2.3 2.4 28 2019-04-06 00:19:16.90 00:19:17.33 32.103 117.593 32.100 117.617 1.6 1.7 29 2019-04-06 11:33:35.42 11:33:34.79 31.531 119.098 31.567 119.183 2.6 2.9 30 2019-04-07 10:46:13.82 10:46:13.29 31.529 119.098 31.550 119.100 2.2 2.4 31 2019-04-08 20:06:45.61 20:06:46.37 32.448 117.053 32.430 117.030 1.7 1.9 32 2019-04-29 05:16:37.78 05:16:38.11 30.785 118.065 30.783 118.050 2.8 2.9 33 2019-05-01 22:22:01.91 22:22:02.23 32.371 118.592 32.400 118.633 2.0 2.1 34 2019-05-22 17:50:25.42 17:50:24.98 31.486 116.267 31.479 116.274 2.4 2.5 35 2019-07-09 18:09:57.42 18:09:57.56 31.739 115.924 31.733 115.917 2.0 2.0 36 2019-09-04 02:02:23.07 02:02:20.92 31.490 118.265 31.467 118.250 1.5 1.7 37 2019-09-07 13:14:35.88 13:14:36.55 33.666 117.511 33.650 117.483 1.9 1.9 38 2019-11-01 15:33:02.57 15:33:01.26 32.472 117.592 32.450 117.580 3.4 3.6 表 3 福建省自动地震定位结果与统一正式目录(2018-01—2019-12)
Table 3. Comparison of the results of automatic positioning system of Fujian and unified official catalog(2018-01—2019-12)
序
号正式目录 福建自动 正式目录 福建自动 正式目录 福建自动 发震时刻 震中位置 震级(M) 年-月-日 时:分:秒 纬度/°N 经度/°E 纬度/°N 经度/°E 1 2018-01-06 03:00:26.68 03:00:26.4 32.562 116.920 32.57 116.91 1.9 2.1 2 2018-01-19 21:23:11.56 21:23:11.3 31.171 117.294 31.16 117.33 2.6 2.8 3 2018-02-09 10:37:08.89 10:37:08.5 33.555 116.607 33.56 116.60 1.9 2.0 4 2018-02-12 12:52:41.58 12:52:40.6 33.548 116.608 33.56 116.60 2.0 2.2 5 2018-02-12 18:54:41.24 18:54:41.1 32.127 117.249 32.16 117.30 1.8 1.9 6 2018-02-12 23:29:52.00 23:29:54.6 33.551 116.609 33.39 116.63 1.8 2.2 7 2018-03-23 22:57:26.75 22:57:26.5 33.085 115.308 33.06 115.26 1.6 1.7 8 2018-04-05 11:47:20.33 11:47:20.3 30.847 118.432 30.86 118.40 1.5 1.7 9 2018-04-06 23:55:07.16 23:55:06.8 31.207 117.751 31.19 117.76 3.5 3.7 10 2018-04-30 03:23:40.86 03:23:40.2 32.584 117.198 32.59 117.16 2.4 2.6 11 2018-05-14 09:17:05.64 09:17:05.3 30.576 117.097 30.62 117.06 1.6 1.7 12 2018-06-14 15:10:54.12 15:10:53.5 31.349 116.085 31.36 116.06 1.5 1.5 13 2018-06-29 14:45:24.64 14:45:24.4 30.573 117.096 30.62 117.13 2.1 2.2 14 2018-07-02 09:55:10.75 09:55:10.0 29.606 117.642 29.62 117.66 3.7 3.8 15 2018-07-05 14:12:23.16 14:12:22.5 31.403 116.176 31.39 116.20 1.6 1.9 16 2018-07-10 08:35:41.45 08:35:41.3 32.157 115.435 32.12 115.46 3.5 3.6 17 2018-07-17 23:41:10.99 23:41:10.6 31.620 116.578 31.62 116.53 2.1 2.3 18 2018-07-28 16:36:18.48 16:36:18.0 33.003 117.956 33.02 118.00 1.7 1.9 19 2018-08-08 20:05:09.74 20:05:09.4 33.073 116.696 33.12 116.73 1.6 1.7 20 2018-08-23 09:24:31.93 09:24:31.7 34.040 116.853 33.99 116.76 2.2 2.3 21 2018-08-30 14:18:23.00 14:18:22.4 32.355 118.607 32.39 118.63 1.5 1.7 22 2018-09-28 20:35:45.10 20:35:44.1 31.422 116.098 31.42 116.10 1.5 1.9 23 2018-10-26 12:55:16.55 12:55:15.8 33.459 117.004 33.46 116.96 1.4 1.6 24 2018-12-24 03:12:20.07 03:12:19.6 32.444 117.048 32.42 117.06 2.2 2.5 25 2018-12-26 16:16:18.77 16:16:18.0 32.498 117.675 32.49 117.63 1.7 1.9 26 2019-03-02 08:11:27.14 08:11:26.3 31.543 119.102 31.56 119.16 2.9 3.4 27 2019-03-18 15:56:53.08 15:56:52.5 30.722 117.928 30.72 117.93 2.3 2.5 28 2019-04-06 00:19:16.90 00:19:16.3 32.103 117.593 32.09 117.60 1.6 1.8 29 2019-04-06 11:33:35.42 11:33:34.7 31.531 119.098 31.52 119.10 2.6 3.1 30 2019-04-07 10:46:13.82 10:46:13.3 31.529 119.098 31.56 119.10 2.2 2.7 31 2019-04-08 20:06:45.61 20:06:45.1 32.448 117.053 32.46 117.06 1.7 2.0 32 2019-04-29 05:16:37.78 05:16:37.5 30.785 118.065 30.79 118.06 2.8 3.0 33 2019-05-01 22:22:01.91 22:22:01.8 32.371 118.592 32.39 118.63 2.0 2.2 34 2019-05-22 17:50:25.42 17:50:25.6 31.486 116.267 31.42 116.20 2.4 2.4 35 2019-07-09 18:09:57.42 18:09:57.7 31.739 115.924 31.69 115.93 2.0 1.9 36 2019-09-04 02:02:23.07 02:02:21.9 31.490 118.265 31.46 118.23 1.5 1.7 37 2019-09-07 13:14:35.88 13:14:35.6 33.666 117.511 33.62 117.50 1.9 2.1 38 2019-11-01 15:33:02.57 15:33:02.2 32.472 117.592 32.52 117.63 3.4 3.6 表 4 安徽区域地震预警系统定位结果与统一正式目录(2018-02—2019-12)
Table 4. Comparison of the results of Anhui regional earthquake early warning system and unified official catalog (2018-02—2019-12)
序
号预警所用台
站数及时间正式目录 预警系统 正式目录 预警系统 正式目录 预警系统 发震时刻 震中位置 震级(M) 年-月-日 时:分:秒 纬度/°N 经度/°E 纬度/°N 经度/°E 1 首报(6台-26 s) 2018-02-12 18:54:41.24 18:54:41.4 32.127 117.249 32.130 117.370 1.8 2.1 终报(13台-34 s) 18:54:42.2 32.130 117.300 2.0 2 首报(6台-19 s) 2018-04-05 11:47:20.33 11:47:19.7 30.847 118.432 30.860 118.430 1.5 1.6 终报(10台-28 s) 11:47:20.1 30.820 118.470 1.6 3 首报(10台-19 s) 2018-04-06 23:55:07.16 23:55:07.1 31.207 117.751 31.200 117.750 3.5 3.2 终报(12台-22 s) 23:55:07.2 31.200 117.740 3.3 4 首报(5台-14 s) 2018-06-14 15:10:54.12 15:10:53.5 31.349 116.085 31.330 116.070 1.5 1.9 终报(6台-26 s) 15:10:53.6 31.340 116.080 1.9 5 首报(6台-23 s) 2018-06-29 14:45:24.64 14:45:23.9 30.573 117.096 30.610 117.180 2.1 1.9 终报(15台-29 s) 14:45:24.5 30.580 117.080 2.0 6 首报(5台-20 s) 2018-07-02 09:55:10.75 09:55:11.1 29.606 117.642 29.600 117.650 3.7 3.1 终报(29台-78 s) 09:55:10.6 29.610 117.660 3.7 7 首报(4台-12 s) 2018-07-05 14:12:23.16 14:12:22.1 31.403 116.176 31.420 116.170 1.6 1.5 终报(9台-52 s) 14:12:22.8 31.410 116.180 1.6 8 首报(8台-26 s) 2018-07-10 08:35:41.45 08:35:41.3 32.157 115.435 32.150 115.470 3.5 3.4 终报(29台-72 s) 08:35:40.8 32.150 115.460 3.4 9 首报(5台-13 s) 2018-07-17 23:41:10.99 23:41:10.3 31.620 116.578 31.650 116.570 2.1 1.7 终报(10台-25 s) 23:41:10.9 31.620 116.580 2.2 10 6台-27 s 2018-07-28 16:36:18.48 16:36:18.8 33.003 117.956 33.010 117.950 1.7 2.0 11 首报(5台-3 s) 2018-09-28 20:35:44.66 20:35:44.6 31.421 116.097 31.430 116.090 1.5 2.0 终报(7台-19 s) 20:35:44.4 31.430 116.100 2.0 12 首报(6台-17 s) 2018-12-24 03:12:20.07 03:12:20.3 32.444 117.048 32.450 117.040 2.2 2.4 终报(20台-68 s) 03:12:20.3 32.480 117.080 2.3 13 首报(7台-13 s) 2019-03-18 15:56:53.08 15:56:53.0 30.722 117.928 30.710 117.920 2.3 2.8 终报(37台-46 s) 15:56:53.1 30.720 117.930 2.4 14 首报(10台-18 s) 2019-04-06 00:19:16.90 00:19:16.9 32.103 117.593 32.090 117.620 1.6 1.6 终报(17台-39 s) 11:19:16.6 32.100 117.610 1.5 15 首报(4台-11 s) 2019-04-06 11:33:35.42 11:33:33.1 31.531 119.098 31.590 119.090 2.6 2.8 终报(47台-52 s) 11:33:35.3 31.540 119.110 2.8 16 首报(6台-12 s) 2019-04-07 10:46:13.82 10:46:13.5 31.529 119.098 31.550 119.110 2.2 2.1 终报(33台-65 s) 10:46:13.6 31.540 119.110 2.2 17 首报(7台-18 s) 2019-04-08 20:06:45.61 20:06:45.8 32.448 117.053 32.460 117.040 1.7 2.2 终报(19台-34 s) 20:06:45.1 32.460 117.050 1.7 18 首报(5台-10 s) 2019-04-29 05:16:37.78 05:16:35.6 30.785 118.065 30.870 118.090 2.8 3.0 终报(58台-50 s) 05:16:38.3 30.780 118.060 2.8 19 首报(6台-15 s) 2019-05-01 22:22:01.91 22:22:01.8 32.371 118.592 32.390 118.610 2.0 2.1 终报(34台-59 s) 22:22:01.8 32.380 118.620 2.1 20 首报(4台-7 s) 2019-05-22 17:50:25.42 17:50:24.9 31.486 116.267 31.430 116.250 2.4 2.9 终报(40台-54 s) 17:50:25.3 31.470 116.280 2.4 21 首报(7台-11 s) 2019-07-09 18:09:57.42 18:09:55.8 31.739 115.924 31.780 115.840 2.0 2.1 终报(20台-51 s) 18:09:57.2 31.760 115.940 2.2 22 首报(6台-15 s) 2019-09-04 02:02:23.07 02:02:23.1 31.490 118.265 31.480 118.260 1.5 1.6 终报(23台-36 s) 02:02:23.3 31.480 118.250 1.6 23 首报(6台-16 s) 2019-09-07 13:14:35.88 13:14:35.7 33.666 117.511 33.650 117.490 1.9 2.0 终报(9台-25 s) 13:14:35.6 33.620 117.480 2.0 24 首报(4台-13 s) 2019-11-01 15:33:02.57 15:33:03.1 32.472 117.592 32.480 117.500 3.4 3.3 终报(72台-107 s) 15:33:02.1 32.470 117.600 3.4 表 5 江苏、福建自动定位以及安徽区域预警系统的定位结果误差分析
Table 5. Error analysis of positioning results among Jiangsu and Fujian automatic positioning systems and Anhui regional earthquake early warning system
发震时
刻差/s震中水平
位置差/km震级
差(M)江苏自动定位 0.64 2.150 0.1 福建自动定位 0.50 3.617 0.2 预警首报 0.63 4.055 0.25 预警终报 0.37 2.107 0.12 -
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