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Changes for page Seismometers

Last modified by robert on 2025/06/15 15:01
From version 34.1
edited by robert
on 2025/03/03 18:34
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To version 1.2
edited by robert
on 2023/12/11 11:35
Change comment: There is no comment for this version

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1 -Seismometers
1 +Seismometers2
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5 += My new article =
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5 -= Broadband sensors =
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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.
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8 8  
9 -== Nanometrics ==
19 +== Sub-paragraph ==
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.
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12 12  
13 -=== Trillium Compact 120 ===
23 +== Sub-paragraph ==
14 14  
15 -The Trillium Compact 120 has sensitivity band between 120 seconds and 100Hz but is prone to corrosion when buried for long periods. They have a tilt tolerance of ~~10° but come with adjustable feet for leveling.
25 +Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
16 16  
17 - 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]]
27 +=== Sub-sub paragraph ===
18 18  
19 -=== Trillium Compact 20 ===
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20 20  
21 -The Trillium compact has a recording range between 20 seconds and 100H. but is prone to corrosion when buried for long periods. They have a tilt tolerance of ~~10° but come with adjustable feet for leveling.
22 22  
23 -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]]
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24 24  
25 -(% style="color:inherit; font-family:inherit; font-size:max(18px, min(20px, 14.4444px + 0.462963vw))" %)Trillium Compact Posthole
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26 26  
27 -The Trillium Compact Posthole is designed with a robust casing allowing it to be deployed via direct-burial without a vault or protective case. It does NOT have leveling feet nor a bubble (**bring your own!**), nor can its mass be rebalanced remotely. The cable is also quite a bit more stiff so may require burial at an increased depth. If installed inside a vault, the cable may also unbalance the sensor if left by itself. The instrument response is identical to a Trillium Compact 120.
36 +== Sub-paragraph ==
28 28  
29 -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]]
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30 30  
31 -=== Trillium Compact Horizon ===
40 +== Sub-paragraph ==
32 32  
33 -The Trillium Compact Horizon is sort of a mix between the Posthole and Compact 120, ideal for shallow direct bury deployments or instances where packing weight and size is an important consideration. Its response and sensitivity is identical to the Trillium Compact 120
34 -
35 -**~*~*ADD PICTURES~*~***
36 -
37 -=== SmartSolo Broadbands ===
38 -
39 -Two types of SmartSolo brand seismometers are currently available, one of which is a broadband seismometer. More information is available on the SmartSolo Seismometers page.
40 -
41 -= Short period sensors =
42 -
43 -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.
44 -
45 -=== Lennartz Electronic LE-3D Lite (MkII) ===
46 -
47 -etc
48 -
49 -=== SmartSolo Short periods ===
50 -
51 -Two types of SmartSolo brand seismometers are currently available, one of which is a short-period seismometer. More information is available on the SmartSolo Seismometers page.
52 -
53 -etc
54 -
55 -
56 -== Channel and Instrument conventions ==
57 -
58 -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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64 64  {{toc/}}
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69 -= Trillium Compact 120 =
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53 +//Figure 1: [[Sea>>https://commons.wikimedia.org/wiki/File:Isle_of_Icacos_II.jpg]]//
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71 -= [[image:Trillium compact120.jpg]] =
72 -
73 -|**Frequency Band**|120 seconds to 100 Hz
74 -|**Sensitivity**| 754 V/m/s
75 -|**Size (Diameter x Height)**|9 x 13 cm
76 -|**Weight**|1.1 kg
55 +[[image:Templates.Article.Template.WebHome@image2.jpg]]
56 +//Figure 2: [[Waves>>https://commons.wikimedia.org/wiki/File:Culebra_-_Playa_de_Flamenco.jpg]]//
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81 -= Trillium Compact PostHole 120 =
82 -
83 -= [[image:Trillium compact posthole.jpg]] =
84 -
85 -|**Frequency Band**|120 seconds to 100 Hz
86 -|**Sensitivity**| 754 V/m/s
87 -|**Size (Diameter x Height)**|10 x 17 cm
88 -|**Weight**|3.1 kg
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94 -= Lennartz LE-3D-Lite MkII =
95 -
96 -= [[image:LE3Dlite.jpg||data-xwiki-image-style-alignment="~"center~""]] =
97 -
98 -
99 -|**Frequency Band**|1 seconds to 100 Hz
100 -|**Sensitivity**| 400 V/m/s
101 -|**Size (Diameter x Height)**|10 x 10 cm
102 -|**Weight**|1.9 kg
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