Wiki source code of Seismometers

Version 30.1 by robert on 2024/01/15 11:29

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5 = Broadband sensors =
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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.
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9 == Nanometrics ==
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11 etc
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13 === Trillium Compact 120s ===
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15 === Trillium Compact Posthole 120s ===
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17 === Trillium Compact 20s ===
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19 etc
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21
22 = Short period sensors =
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24 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.
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26 == Lennartz Electronic LE-3D Lite (MkII) ==
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28 etc
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30 == Sub-paragraph ==
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32 etc
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35 == Channel and Instrument conventions ==
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37 We follow FDSN guidelines for sensor channel and type naming conventions, outlined at [[SAGE / IRIS>>https://ds.iris.edu/ds/nodes/dmc/data/formats/seed-channel-naming/]]
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42 {{box title="**Contents**"}}
43 {{toc/}}
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48 = Trillium Compact 120 =
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50 = [[image:Trillium compact120.jpg]] =
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52 |**Frequency Band**|120 seconds to 100 Hz
53 |**Sensitivity**| 754 V/m/s
54 |**Size (Diameter x Height)**|9 x 13 cm
55 |**Weight**|1.1 kg
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60 = Trillium Compact PostHole 120 =
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62 = [[image:Trillium compact posthole.jpg]] =
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64 |**Frequency Band**|120 seconds to 100 Hz
65 |**Sensitivity**| 754 V/m/s
66 |**Size (Diameter x Height)**|10 x 17 cm
67 |**Weight**|3.1 kg
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73 = Lennartz LE-3D-Lite MkII =
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75 = [[image:LE3Dlite.jpg||data-xwiki-image-style-alignment="~"center~""]] =
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77
78 |**Frequency Band**|1 seconds to 100 Hz
79 |**Sensitivity**| 400 V/m/s
80 |**Size (Diameter x Height)**|10 x 10 cm
81 |**Weight**|1.9 kg
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83
84 {{box title="= Guralp 40T =
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86 [[image:Guralp 40T.jpg]]
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89 |(% style=~"width:128px~" %)**Sensitivity**|(% style=~"width:103px~" %)
90 |(% style=~"width:128px~" %)**Size (Diameter x Height)**|(% style=~"width:103px~" %)17 x 23cm
91 |(% style=~"width:128px~" %)**Weight**|(% style=~"width:103px~" %)6.6 Kg"}}
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93 {{/box}}
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95 {{box title="= Guralp 3ESP =
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97 [[image:GURALP 3ESP.jpg]]
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99 |(% style=~"width:121px~" %)**Sensitivity**|(% style=~"width:110px~" %)
100 |(% style=~"width:121px~" %)**Size (Diameter x Height)**|(% style=~"width:110px~" %)17 x 27cm
101 |(% style=~"width:121px~" %)**Weight**|(% style=~"width:110px~" %)10.3Kg"}}
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103 {{/box}}
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105 {{box title="= Guralp 3ESPC =
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107 [[image:Guralp 3ESPC.jpg]]
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109 |(% style=~"width:122px~" %)**Sensitivity**|(% style=~"width:109px~" %)
110 |(% style=~"width:122px~" %)**Size (Diameter x Height)**|(% style=~"width:109px~" %)18 x 28cm
111 |(% style=~"width:122px~" %)**Weight**|(% style=~"width:109px~" %)8.2 Kg"}}
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113 {{/box}}
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