Preliminary discussion on the earthquake early warning network of Jiangxi Province
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摘要: 江西省地震烈度速报与预警工程是对江西省现有地震监测台网进行加密和升级后，形成的地震烈度速报与预警观测网络和紧急地震信息服务网络，向社会公众和政府部门及时提供紧急地震信息服务。本文介绍了江西省地震烈度速报与预警工程基本情况，重新对江西省地震监测能力进行了计算，并对地震预警能力进行了评估。Abstract: The earthquake early warning system is formed by seismic stations and the urgent information systems. Many seismic stations are added to the original seismic monitoring network and old operation systems are upgraded. Early warning and emergency earthquake information to the public and government departments can be published rapidly. This article introduces the earthquake early warning network of Jiangxi Province and evaluates the seismic monitoring capability.
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图 2 江西省不同台站台间距台站数统计
Figure 2. Statistics on the stations with different station spacing in Jiangxi Province
图 3 江西省基准站3台定位监测能力图
Figure 3. The earthquake monitoring capacity of 3 reference stations of Jiangxi Province
图 4 江西省基准站4台定位监测能力图
Figure 4. The earthquake monitoring capacity of 4 reference stations of Jiangxi Province
图 5 江西省地震预警第1报需时
Figure 5. The first earthquake warning time needed in Jiangxi Province
图 7 江西省地震预警第3报需时
Figure 7. The third earthquake warning time needed in Jiangxi Province
图 6 江西省地震预警第2报需时
Figure 6. The second earthquake warning time needed in Jiangxi Province
表 1 量规函数与震中距关系
Table 1. Relationship between scale function
$R(\Delta )$ and epicenter distance$\varDelta $ /km0—5 10 15 20 25 30 35 40 45 50 55 60—70 75—85 90—100 $R(\Delta )$ 1.8 1.9 2.0 2.1 2.3 2.5 2.7 2.8 2.9 3.0 3.1 3.3 3.3 3.4 
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表 2 江西台网基准站噪声统计表
Table 2. Noise statistics table of reference station of Jiangxi seismic network
序号 台站名 噪声值/
（×10−8 m•s−1）台站噪声分级 1 南昌 4.4422 Ⅱ 2 九江 6.3859 Ⅱ 3 会昌 3.4632 Ⅱ 4 上饶 2.9892 Ⅰ 5 修水 3.1091 Ⅰ 6 寻乌 3.1056 Ⅰ 7 安远 4.7267 Ⅱ 8 大余 7.7876 Ⅱ 9 龙南 4.6193 Ⅱ 10 赣州 8.3981 Ⅱ 11 石城 7.6433 Ⅱ 12 万安 1.7247 Ⅰ 13 井冈山 1.8458 Ⅰ 14 吉安 3.9889 Ⅱ 15 南城 2.2121 Ⅰ 16 乐安 3.2285 Ⅱ 17 宜春 4.1913 Ⅱ 18 丰城 3.9358 Ⅱ 19 高安 16.7207 Ⅲ 20 进贤 17.6998 Ⅲ 21 余干 7.8550 Ⅱ 22 景德镇 1.5028 Ⅰ 23 都昌 7.5367 Ⅱ 24 永修 1.6945 Ⅰ 25 兴国 2.4614 Ⅰ
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