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Last modified by robert on 2025/08/21 13:08
From version 53.1
edited by KB
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To version 60.3
edited by robert
on 2025/07/16 16:16
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Summary

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Title
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1 -SmartSolo Seismometers
1 +SmartSolo Node Seismometers
Author
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1 -XWiki.Kimberley
1 +XWiki.robert
Content
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16 16  
17 17  = **Programming Defaults** =
18 18  
19 -ANU recommends that the SP 16HR-3C be set to a gain of 24db and no higher than 250 Hz sampling rate. The BD3C-5 should be set to a gain of 6db (maximum allowed). These are what we use for our internal experiments. **Note that this gain must be removed when exporting to miniseed, **otherwise amplitudes will be a factor of either 15.84893192 (24db) or 2 (6db) too high. We also recommend disabling bluetooth to increase battery life, and to enable "FIFO" mode just in case old data is still present on the units and you run out of space (although it is unlikely you will go over 64 Gb for one deploy). If using the "timed turn-on" option, please be aware that **the units will not begin recording until they have acquired a GPS lock**, which may nor occur if they are buried too deeply or have very poor sky view.
19 +We recommend that the SP 16HR-3C be set to a gain of 24db and no higher than 250 Hz sampling rate unless there is an explicit reason to do so. The BD3C-5 should be set to a gain of 6db (which is the maximum allowed). These are what we use for our internal experiments.
20 20  
21 +**Note that this gain must be removed when exporting to miniseed, **otherwise amplitudes will be a factor of either 15.84893192 (24db) or 2 (6db) too high. We also recommend disabling bluetooth to increase battery life, and to enable "FIFO" mode just in case old data is still present on the units and you run out of space (although it is unlikely you will go over 64 Gb for one deploy). If using the "timed turn-on" option, please be aware that **the units will not begin recording until they have acquired a GPS lock**, which may nor occur if they are buried too deeply or have very poor sky view.
21 21  
23 +
22 22  = **Fieldwork Preparation** =
23 23  
24 24  (% class="box infomessage" %)
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28 28  **INVEST IN FAST EXTERNAL HARD DRIVES – DO NOT LET THIS BE THE LIMITATION OF DATA HARVESTING**
29 29  
30 30  **Assume ~~1 Tb of storage for both raw and exported data per 50 nodes @ 250 Hz & 30 days. One node recording at 250 Hz for 30 days tends to create about 3 Gb of miniseed data.**
33 +
34 +**We have had good experience with the 4Tb Samsung T7 Shield drives.**
31 31  )))
32 32  )))
33 33  
38 +== Magnets ==
39 +
40 +If you are short on magnets, you may find it easier and a lot cheaper to buy magnets in Australia. AMF Magnetics is a good retailer, and [[this item>>https://magnet.com.au/collections/shop?q=23012B]] seems to work well. It is also advantageous to use smaller magnets and store/carry them individually in your back pocket (as well as stick them to various places in your field vehicle, etc).
41 +
42 +== Animal-Proofing ==
43 +
44 +We have experienced times where foxes (or some other animal) will dig up nodes and potentially carry them off for tens or hundreds of meteres. Being sanitary with the rope handles (e.g. not getting food grease on them) seems to help, as well as spraying the nodes and handles with methylated spirits et al. when deploying. There are other specialized products available depending on your environment.
45 +
34 34  = **Installation** =
35 35  
36 -== **1. Logbook documentation** ==
48 +== 1. Logbook documentation ==
37 37  
38 38  (((
39 39  **Essential Details**: Record the following in a logbook:
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45 45  * Serial number (SN) of the sensor
46 46  * Detailed notes on the site conditions and setup
47 47  
48 -== **2. Node Placement** ==
60 +== 2. Node Placement ==
49 49  )))
50 50  
51 51  **Protection**: Place nodes inside (landfill) biodegradable bags to minimize cleaning and cross-site soil contamination.
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56 56  * Take multiple photographs from various angles to document the site setup thoroughly.
57 57  * Include a detailed site description in your notes, specifying distances and orientations from nearby landmarks (e.g. Richards garden, Te Mini steam field eastern side)
58 58  
59 -== **3. GPS Considerations** ==
71 +== 3. GPS Considerations ==
60 60  
61 61  (% class="wikigeneratedid" %)
62 62  The GPS antenna is at the top and center of the unit, and will (usually) only receive signal with a clear sky view directly above. The signal is able to penetrate plastic and terracotta planters and a thin layer of soil, but may struggle if the soil layer is too thick. **These nodes will not start recording without attaining a GPS lock** and repeated attempts will excessively drain the battery.
63 63  
64 -== **4. Visibility and Location Marking** ==
76 +== 4. Visibility and Location Marking ==
65 65  
66 66  **Flag Placement**: Position a flag, preferably in a bright color (avoid green or yellow), near the instrument to aid in its future location.
67 67  
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70 70  * Use a GPS device to mark the instrument's exact location.
71 71  * Record this location in both your paper notes and the GPS device.
72 72  
73 -== (% style="color:inherit; font-family:inherit; font-size:max(18px, min(20px, 14.4444px + 0.462963vw))" %)**5. Charge Time, Pre-Deployment & Post-Deployment**(%%) ==
85 +== (% style="color:inherit; font-family:inherit; font-size:max(18px, min(20px, 14.4444px + 0.462963vw))" %)5. Charge Time, Pre-Deployment & Post-Deployment(%%) ==
74 74  
75 75  * **Charging Duration**: Both types of nodes take approximately 6-8 hours to fully charge from a flat state.
76 76  * **Pre-Deployment Charging**:
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87 87  ** Nodes should not be stored fully charged, and it **they should especially not be stored with 0 charge.**
88 88  
89 89  (((
90 -== **6. Data Sharing and Metadata Creation** ==
102 +== 6. Data Sharing and Metadata Creation ==
91 91  )))
92 92  
93 93  **GPS Data**:
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100 100  
101 101  **Metadata File**:
102 102  
103 -* Create and organize metadata according to the [[ANU metadata standard txt file>>attach:example_metadata.txt]].
115 +* Create and organize metadata according to the [[ANU metadata standard txt file>>attach:example_metadata.txt]]. This is going to be particularly important if you are reusing nodes at different sites... not documenting the serial numbers (of the **top half** of the node) and the times they were deployed can lead to station mix-ups.
104 104  
105 -== **7. Additional Best Practices** ==
117 +== 7. Additional Best Practices ==
106 106  
107 -* **Environmental Responsibility**: Ensure that the node placement and the materials used are environmentally responsible and adhere to local regulations.
108 108  * **Training and Familiarisation**: Make sure all team members are adequately trained in using the GPS devices, compass use, and other equipment to ensure consistent and accurate data collection.
109 109  
110 -* (((
111 -==== **Keeping the Instruments Clean** ====
112 -)))
113 -* (((
114 -Use a (**landfill**, not //compost//) degradable bag when installing to keep the instrument clean. This will save you many hours of time cleaning them in preparation for their return. [[Here is a video>>url:http://auspass.edu.au/field/bd3c_removal.mp4]] demonstrating its effectiveness.
115 -)))
116 -
117 117  ----
118 118  
119 119  = **Seismic Station Demobilization and Documentation** =
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165 165  = **Charging Procedure for Seismic Nodes** =
166 166  
167 167  (((
168 -== **1. Preparation for Charging**: ==
172 +== 1. Preparation for Charging: ==
169 169  
170 170  * Before charging, ensure each node is clean. This involves removing any dirt or debris to maintain the integrity of the equipment and ensure effective charging.
171 171  )))
172 172  
173 173  (((
174 -== **2. Disassembling the Node**: ==
178 +== 2. Disassembling the Node: ==
175 175  
176 176  * For the IGU-16HR, remove the battery (bottom half) from the sensor. This is done by unscrewing the spikes counter-clockwise.
177 177  )))
178 178  
179 179  (((
180 -== **3. Setting Nodes in the Charging Box**: ==
184 +== 3. Setting Nodes in the Charging Box: ==
181 181  
182 182  * Place 1-16 IGU-16HR battery components upside-down into the charger, assuring they are oriented properly.
183 183  )))
184 184  
185 185  (((
186 -== **4. Monitoring the Charging Process**: ==
190 +== 4. Monitoring the Charging Process: ==
187 187  
188 188  * Once the nodes are set in the charging box and the charging process begins, lights adjacent to the batteries will illuminate. These lights indicate that charging is underway.
189 189  * Observe the transition of the lights from steady red to orange, then to green, and finally to flashing green. A flashing green light signifies that the batteries are fully charged. For storage, the goal is to charge them to ORANGE.
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190 190  )))
191 191  
192 192  (((
193 -== **5. Updating Charge Status**: ==
197 +== 5. Updating Charge Status: ==
194 194  
195 195  * During the charging period, take this opportunity to update the status of each unit. Check the //"C"// box on your temporary labels to indicate that the unit has been successfully charged.
196 196  * This step is crucial for tracking the charging status of multiple units, especially when handling a large number of nodes.
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207 207  
208 208  = **Downloading and Converting Seismic Data to MiniSeed Format** =
209 209  
210 -== **Node Registration and Software Setup** ==
214 +== Node Registration and Software Setup ==
211 211  
212 212  1. (((
213 213  **Registering Nodes in the System**:
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225 225  * Ignore the settings for seismic recordings in the subsequent window. Resetting instruments (e.g., sampling rate, gain) requires reprogramming via script.
226 226  )))
227 227  
228 -== **Data Downloading Process** ==
232 +== Data Downloading Process ==
229 229  
230 230  1. (((
231 231  **Initiating Data Download**:
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249 249  )))
250 250  )))
251 251  
252 -== **Handling Nodes During Download** ==
256 +== Handling Nodes During Download ==
253 253  
254 254  1. (((
255 255  **Monitoring Download Indicators**:
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305 305  
306 306  = **Cleaning** =
307 307  
308 -**Procedure for Seismic Nodes:**
312 +When still connected, the nodes are water resistant (don't submerge them!) and can handle a good spray / wipedown. A strong, non-wire brush is helpful to reach areas between the metal spikes on the bottom.
309 309  
310 310  = **Weights (for shipping)** =
311 311  
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