# Urban Seismic Networks: A Worldwide Review
## 2 USN Catalogue
### Geographical Distribution

Table 1: _Cont._  
\begin{table}
\begin{tabular}{c c c c c c c} \hline
**ID** & **Nodes** & **Area km\({}^{2}\)** & **Density Log (nodes/km\({}^{2}\))** & **Start Year** & **Duration Years** & **Sensor Type** & **Transmission** \\ \hline
1 & 6 & 375 & \(-\)1.80 & 1992 & 5.9 & Force Balance Accelerometer & No trassmission \\
2 & 10 & 28 & \(-\)0.45 & 1993 & 0.25 & Velocimeter & No trassmission \\
3 & 37 & 500 & \(-\)1.13 & 1995 & 28 & Force Balance Accelerometer & Real-time \\
4 & 32 & 800 & \(-\)1.40 & 1996 & 21 & Force Balance Accelerometer & No info \\
5 & 163 & 1600 & \(-\)0.99 & 1997 & 26 & Velocimeter and accelerometer & No info \\
6 & 159 & 600 & \(-\)0.58 & 1997 & 13.5 & Force Balance Accelerometer & Real-time \\
7 & 13 & 120 & \(-\)0.97 & 1998 & 7 & Force Balance Accelerometer & Near real-time \\
8 & 32 & 500 & \(-\)1.19 & 1999 & 3 & Force Balance Accelerometer & Real-time \\
9 & 10 & 19,000 & \(-\)3.28 & 1999 & 19 & Velocimeter and accelerometer & Real-time \\
10 & 10 & 3600 & \(-\)2.56 & 1999 & 0.17 & Velocimeter & No trassmission \\
11 & 8 & 200 & \(-\)1.40 & 1999 & 0.27 & Velocimeter and accelerometer & No trassmission \\
12 & 15 & 400 & \(-\)1.43 & 2000 & 10 & Force Balance Accelerometer & No info \\
13 & 44 & 660 & \(-\)1.18 & 2001 & 0.14 & Velocimeter & No trassmission \\
14 & 6 & 130 & \(-\)1.34 & 2001 & 0.08 & Velocimeter & No info \\
15 & 110 & 1500 & \(-\)1.13 & 2002 & 5 & Force Balance Accelerometer & Near real-time \\
16 & 14 & 720 & \(-\)1.71 & 2002 & NA & Force Balance Accelerometer & Real-time \\
17 & 13 & 45 & \(-\)0.54 & 2003 & 8 & Force Balance Accelerometer & Near real-time \\
18 & 11 & 5000 & \(-\)2.66 & 2003 & 0.5 & Velocimeter & No info \\
19 & 34 & 620 & \(-\)1.26 & 2003 & 0.8 & Velocimeter & No trassmission \\
20 & 21 & 60 & \(-\)0.46 & 2004 & NA & Force Balance Accelerometer & Near real-time \\
21 & 3800 & 3100 & 0.09 & 2004 & 19 & MFMS Accelerometer & Real-time \\
22 & 43 & 2 & 1.33 & 2004 & 19 & Velocimeter and accelerometer & Real-time \\
23 & 8 & 10 & \(-\)0.10 & 2004 & 0.14 & Velocimeter & No trassmission \\
24 & 11 & 12 & \(-\)0.04 & 2004 & 0.66 & Velocimeter & No trassmission \\
25 & 11 & 70 & \(-\)0.80 & 2004 & 0.23 & Velocimeter & No info \\
26 & 24 & 4100 & \(-\)2.23 & 2004 & 14 & Velocimeter & No info \\
27 & 16 & 320 & \(-\)1.30 & 2005 & 13 & Force Balance Accelerometer & No info \\
28 & 21 & 75 & \(-\)0.55 & 2005 & 12.2 & Force Balance Accelerometer & Real-time \\
29 & 28 & 3700 & \(-\)2.12 & 2006 & 17 & Velocimeter & Real-time \\
30 & 9 & 720 & \(-\)1.90 & 2006 & 17 & Velocimeter & Real-time \\
31 & 15 & 1650 & \(-\)2.04 & 2006 & 0.25 & Velocimeter & No trassmission \\
32 & 10 & 20 & \(-\)0.30 & 2006 & 0.5 & Velocimeter & No trassmission \\
33 & 20 & 1550 & \(-\)1.89 & 2007 & 6.9 & Force Balance Accelerometer & Real-time \\
34 & 14 & 3 & 0.67 & 2007 & 15.2 & MEMS Accelerometer & Near real-time \\
35 & 12 & 330 & \(-\)1.44 & 2008 & 12 & Force Balance Accelerometer & Real-time \\
36 & 39 & 360 & \(-\)0.97 & 2008 & 3 & Velocimeter and accelerometer & Near real-time \\
37 & 13 & 25 & \(-\)0.28 & 2008 & 8 & Force Balance Accelerometer & Real-time \\
38 & 80 & 18,000 & \(-\)2.35 & 2008 & 6 & Force Balance Accelerometer & Real-time \\
39 & 8 & 0.3 & 1.43 & 2008 & 0.16 & Velocimeter & No trassmission \\
40 & 3 & 0.15 & 1.30 & 2008 & 0.25 & Velocimeter & No trassmission \\
41 & 16 & 1000 & \(-\)1.80 & 2008 & 10 & Velocimeter and accelerometer & Real-time \\
42 & 19 & 1000 & \(-\)1.72 & 2008 & 0.25 & Velocimeter & No trassmission \\
43 & 20 & 20 & 0.00 & 2009 & 2 & MEMS Accelerometer & Real-time \\
44 & 170 & 15,000 & \(-\)1.95 & 2009 & 6 & MEMS Accelerometer & Real-time \\
45 & 15 & 20 & \(-\)0.12 & 2009 & 0.38 & Velocimeter & No trassmission \\
46 & 5 & 300 & \(-\)1.78 & 2009 & 0.25 & Velocimeter & No trassmission \\
47 & 45 & 280 & \(-\)0.79 & 2009 & 0.6 & Velocimeter & No trassmission \\
48 & 18 & 570 & \(-\)1.50 & 2009 & 13.25 & Force Balance Accelerometer & No trassmission \\
49 & 636 & 36,200 & \(-\)1.76 & 2010 & 13 & Low cost MEMS & Near real-time \\
50 & 180 & 2250 & \(-\)1.10 & 2010 & 2.5 & Low cost MEMS & Near real-time \\
51 & 500 & 1400 & \(-\)0.45 & 2011 & 12 & Low cost MEMS & Near real-time \\
52 & 28 & 65,000 & -3.37 & 2011 & 6 & Velocimeter & Real-time \\
53 & 16 & 240 & \(-\)1.18 & 2011 & 0.29 & Velocimeter & No trassmission \\
54 & 12 & 0.1 & 2008 & 2012 & 1 & MEMS Accelerometer & Real-time \\
55 & 5 & 320 & \(-\)1.81 & 2012 & 10.7 & Force Balance Accelerometer & Real-time \\
56 & 12 & 20 & \(-\)0.22 & 2012 & 0.27 & Velocimeter & No trassmission \\
57 & 125 & 120,000 & \(-\)2.98 & 2012 & 10.1 & Velocimeter and accelerometer & Real-time \\
58 & 21 & 9 & 0.37 & 2013 & 9 & Low cost MEMS & Real-time \\
59 & 61 & 970 & \(-\)1.20 & 2013 & 2 & Force Balance Accelerometer & Real-time \\
60 & 7 & 350 & \(-\)1.70 & 2013 & 1.4 & Force Balance Accelerometer & Real-time \\
61 & 16 & 24 & \(-\)0.18 & 2013 & 0.33 & Velocimeter & No trassmission \\
62 & 96 & 500 & \(-\)0.72 & 2013 & 0.41 & Velocimeter & No trassmission \\
63 & 8 & 315 & \(-\)1.60 & 2014 & 9 & Velocimeter & Real-time \\
64 & 7 & 13 & \(-\)0.27 & 2014 & 3 & Force Balance Accelerometer & Real-time \\
65 & 16 & 800 & \(-\)1.70 & 2014 & 0.25 & Velocimeter & No trassmission \\
66 & 27 & 170 & \(-\)0.80 & 2014 & 0.8 & Velocimeter & No trassmission \\
67 & 9 & 10 & \(-\)0.05 & 2014 & 0.82 & Velocimeter & No trassmission \\
68 & 300 & 480 & \(-\)0.20 & 2015 & 8 & Low cost MEMS & Near real-time \\
69 & 5 & 1