Changes for page Seismometers
Last modified by robert on 2025/06/15 15:01
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... ... @@ -4,7 +4,7 @@ 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 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. DataLoggers.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 ... ... @@ -50,9 +50,6 @@ 50 50 |(% style=~"width:115px~" %)**Sensitivity **|(% style=~"width:112px~" %)120 seconds 51 51 |(% style=~"width:115px~" %)**Size (Diameter x Height)**|(% style=~"width:112px~" %)9 x 13 cm 52 52 |(% style=~"width:115px~" %)**Weight**|(% style=~"width:112px~" %)1.1 kg 53 - 54 - "}} 55 - 56 56 {{/box}} 57 57 58 58 {{box title="= Trillium Compact Posthole = ... ... @@ -62,7 +62,6 @@ 62 62 |(% style=~"width:115px~" %)**Sensitivity **|(% style=~"width:112px~" %)120 seconds 63 63 |(% style=~"width:139px~" %)**Size (Diameter x Height)**|(% style=~"width:88px~" %)10 x 17 cm 64 64 |(% style=~"width:139px~" %)**Weight**|(% style=~"width:88px~" %)3.1 kg"}} 65 - 66 66 {{/box}} 67 67 68 68 {{box title="= Lennartz LE-3D-Lite Mk2 = ... ... @@ -72,7 +72,6 @@ 72 72 |(% style=~"width:115px~" %)**Sensitivity **|(% style=~"width:112px~" %)2? seconds 73 73 |(% style=~"width:139px~" %)**Size (Diameter x Height)**|(% style=~"width:88px~" %)? x ? cm 74 74 |(% style=~"width:139px~" %)**Weight**|(% style=~"width:88px~" %)? kg"}} 75 - 76 76 {{/box}} 77 77 ))) 78 78 )))