Skip to Content

Changes for page Seismometers

Last modified by robert on 2025/03/25 09:14
From version 32.1
edited by Jack Dent
on 2025/01/02 10:47
Change comment: There is no comment for this version
To version 31.1
edited by Jack Dent
on 2024/12/19 14:19
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -4,45 +4,23 @@
4 4  (((
5 5  = Broadband sensors =
6 6  
7 -Broadband (or BB) sensors are especially sensitive to low-frequency energy and are //broad//ly defined as any instrument capable of **reliably recording wave periods greater or equal to 10 seconds**. This makes them useful for the analysis and detection of teleseismic earthquakes as well as techniques involving ambient noise. However, they are also well-suited for measuring high-frequency energy, limited only by the Nyquist frequency of the [[data logger>>doc:Instrumentation.ANU LPR-200.WebHome]]'s sampling rate. The downside to broadband sensors is usually their cost, size, and fragility relative to short-period sensors.
7 +Broadband (or BB) sensors are especially sensitive to low frequency energy, and are //broad//ly defined as any instrument capable of **reliably recording wave periods greater or equal to 10 seconds**. This makes them useful for analysis and detection of teleseismic earthquakes as well as techniques involving ambient noise. However they are also well-suited for measuring high frequency energy, limited only by the Nyquist frequency of the [[data logger>>doc:Instrumentation.ANU LPR-200.WebHome]]'s sampling rate. The downside to broadband sensors is usually their cost, size, and fragility relative to short period sensors.
8 8  
9 9  == Nanometrics ==
10 10  
11 -Currently, 4 kinds of nanometric broadband seismic sensors are available. The Trillium Compact 120, Trillium Compact 20, Trillium Compact Posthole, and most recently, the Trillium Compact Horizon. These seismometers are ideal for long-term deployments of multiple months. All of these seismometers are compatible with the LPR-200 and TSAWR loggers and are designed for low energy consumption.
12 -
13 13  === Trillium Compact 120 ===
14 14  
15 -The Trillium Compact 120 has a recording range between 120 seconds and 100Hz.
13 +=== Trillium Compact Posthole 120 ===
16 16  
17 -What info?
18 -
19 -- Recording frequency range?
20 -
21 -- Sensitivity?
22 -
23 -- Adjustable feet and levelling bubble?
24 -
25 -For more information, refer to the Nanometrics instrument information sheet: [[https:~~/~~/nanometrics.ca/hubfs/Downloads/Data%20Sheets/trillium_compact.pdf?hsLang=en-ca>>https://nanometrics.ca/hubfs/Downloads/Data%20Sheets/trillium_compact.pdf?hsLang=en-ca]]
26 -
27 27  === Trillium Compact 20 ===
28 28  
29 -The Trillium compact has a recording range between 20 seconds and 100Hz. These instruments also have a tilt tolerance of 10° making for efficient deployment.
17 +=== Trillum Compact Horizon ===
30 30  
31 -​​​​​​​For more information, refer to the Nanometrics instrument information sheet: [[https:~~/~~/nanometrics.ca/hubfs/Downloads/Data%20Sheets/trillium_compact.pdf?hsLang=en-ca>>https://nanometrics.ca/hubfs/Downloads/Data%20Sheets/trillium_compact.pdf?hsLang=en-ca]]
32 -
33 -(% style="color:inherit; font-family:inherit; font-size:max(18px, min(20px, 14.4444px + 0.462963vw))" %)Trillium Compact Posthole
34 -
35 -The Trillium Compact Posthole is designed with a robust casing allowing it to be deployed without a vault or protective case.
36 -
37 -For more information, refer to the Nanometrics instrument information sheet:  [[https:~~/~~/nanometrics.ca/hubfs/Downloads/Data%20Sheets/trillium_compact_ph.pdf?hsLang=en-ca>>https://nanometrics.ca/hubfs/Downloads/Data%20Sheets/trillium_compact_ph.pdf?hsLang=en-ca]]
38 -
39 -=== Trillium Compact Horizon ===
40 -
41 41  === ===
42 42  
43 43  = Short period sensors =
44 44  
45 -Short-period (SP) sensors have limited sensitivity to longer periods, but are otherwise perfectly suitable for earthquake or other high-frequency analysis. They are generally defined as any instrument that begins to **lose sensitivity at periods larger than 10 seconds**. They tend to be smaller and more mechanically robust to broadband sensors.
23 +Short period (SP) sensors have limited sensitivity to longer periods, but are otherwise perfectly suitable for earthquake or other high frequency analysis. They are generally defined as any instrument that begins to **lose sensitivity at periods larger that 10 seconds**. They tend to be smaller and more mechanically robust to broadband sensors.
46 46  
47 47  == Lennartz Electronic LE-3D Lite (MkII) ==
48 48  
... ... @@ -102,6 +102,37 @@
102 102  |**Weight**|1.9 kg
103 103  )))
104 104  
83 +{{box title="= Guralp 40T =
84 +
85 +[[image:Guralp 40T.jpg]]
86 +
87 +
88 +|(% style=~"width:128px~" %)**Sensitivity**|(% style=~"width:103px~" %)
89 +|(% style=~"width:128px~" %)**Size (Diameter x Height)**|(% style=~"width:103px~" %)17 x 23cm
90 +|(% style=~"width:128px~" %)**Weight**|(% style=~"width:103px~" %)6.6 Kg"}}
105 105  
92 +{{/box}}
93 +
94 +{{box title="= Guralp 3ESP =
95 +
96 +[[image:GURALP 3ESP.jpg]]
97 +
98 +|(% style=~"width:121px~" %)**Sensitivity**|(% style=~"width:110px~" %)
99 +|(% style=~"width:121px~" %)**Size (Diameter x Height)**|(% style=~"width:110px~" %)17 x 27cm
100 +|(% style=~"width:121px~" %)**Weight**|(% style=~"width:110px~" %)10.3Kg"}}
101 +
102 +{{/box}}
103 +
104 +{{box title="= Guralp 3ESPC =
105 +
106 +[[image:Guralp 3ESPC.jpg]]
107 +
108 +|(% style=~"width:122px~" %)**Sensitivity**|(% style=~"width:109px~" %)
109 +|(% style=~"width:122px~" %)**Size (Diameter x Height)**|(% style=~"width:109px~" %)18 x 28cm
110 +|(% style=~"width:122px~" %)**Weight**|(% style=~"width:109px~" %)8.2 Kg"}}
111 +
112 +{{/box}}
113 +
114 +
106 106  )))
107 107  )))