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Changes for page Seismometers

Last modified by robert on 2026/01/15 17:32
From version 50.1
edited by robert
on 2026/01/14 12:31
Change comment: There is no comment for this version
To version 52.1
edited by robert
on 2026/01/15 17:32
Change comment: There is no comment for this version

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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 the analysis and detection of teleseismic earthquakes as well as techniques involving ambient noise. The downside to broadband sensors is usually their cost, size, and fragility relative to short-period sensors.
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9 +Broadband sensors are not especially suited for very high frequency analysis as most tend to have an upper sensitivity limit of ~~100 Hz (e.g. achievable via 200 Hz sample rate). For this reason **we do not recommend people record data above 250 Hz** as it is wasteful. If you need to reliably measure energy above 100 Hz one of the SmartSolo nodes is more suitable.
10 +
9 9  == Nanometrics ==
10 10  
11 -Currently, 4 kinds of nanometric broadband seismic sensors are available. The Trillium Compact 120s, Trillium Compact 20s, 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.
13 +Currently, four kinds of Nanometrics broadband seismic sensors are available. The Trillium Compact 120s, Trillium Compact 20s, Trillium Compact Posthole, and 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 12  
13 13  === Trillium Compact 120s ===
14 14