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Last modified by robert on 2025/07/16 16:40
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30 30  **INVEST IN FAST EXTERNAL HARD DRIVES – DO NOT LET THIS BE THE LIMITATION OF DATA HARVESTING**
31 31  
32 32  **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.**
33 33  )))
34 34  )))
35 35  
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43 43  
44 44  = **Installation** =
45 45  
46 -== **1. Logbook documentation** ==
48 +== 1. Logbook documentation ==
47 47  
48 48  (((
49 49  **Essential Details**: Record the following in a logbook:
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55 55  * Serial number (SN) of the sensor
56 56  * Detailed notes on the site conditions and setup
57 57  
58 -== **2. Node Placement** ==
60 +== 2. Node Placement ==
59 59  )))
60 60  
61 61  **Protection**: Place nodes inside (landfill) biodegradable bags to minimize cleaning and cross-site soil contamination.
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66 66  * Take multiple photographs from various angles to document the site setup thoroughly.
67 67  * 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)
68 68  
69 -== **3. GPS Considerations** ==
71 +== 3. GPS Considerations ==
70 70  
71 71  (% class="wikigeneratedid" %)
72 72  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.
73 73  
74 -== **4. Visibility and Location Marking** ==
76 +== 4. Visibility and Location Marking ==
75 75  
76 76  **Flag Placement**: Position a flag, preferably in a bright color (avoid green or yellow), near the instrument to aid in its future location.
77 77  
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80 80  * Use a GPS device to mark the instrument's exact location.
81 81  * Record this location in both your paper notes and the GPS device.
82 82  
83 -== (% 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(%%) ==
84 84  
85 85  * **Charging Duration**: Both types of nodes take approximately 6-8 hours to fully charge from a flat state.
86 86  * **Pre-Deployment Charging**:
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97 97  ** Nodes should not be stored fully charged, and it **they should especially not be stored with 0 charge.**
98 98  
99 99  (((
100 -== **6. Data Sharing and Metadata Creation** ==
102 +== 6. Data Sharing and Metadata Creation ==
101 101  )))
102 102  
103 103  **GPS Data**:
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110 110  
111 111  **Metadata File**:
112 112  
113 -* 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.
114 114  
115 -== **7. Additional Best Practices** ==
117 +== 7. Additional Best Practices ==
116 116  
117 117  * **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.
118 118  
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167 167  = **Charging Procedure for Seismic Nodes** =
168 168  
169 169  (((
170 -== **1. Preparation for Charging**: ==
172 +== 1. Preparation for Charging: ==
171 171  
172 172  * 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.
173 173  )))
174 174  
175 175  (((
176 -== **2. Disassembling the Node**: ==
178 +== 2. Disassembling the Node: ==
177 177  
178 178  * For the IGU-16HR, remove the battery (bottom half) from the sensor. This is done by unscrewing the spikes counter-clockwise.
179 179  )))
180 180  
181 181  (((
182 -== **3. Setting Nodes in the Charging Box**: ==
184 +== 3. Setting Nodes in the Charging Box: ==
183 183  
184 184  * Place 1-16 IGU-16HR battery components upside-down into the charger, assuring they are oriented properly.
185 185  )))
186 186  
187 187  (((
188 -== **4. Monitoring the Charging Process**: ==
190 +== 4. Monitoring the Charging Process: ==
189 189  
190 190  * 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.
191 191  * 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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192 192  )))
193 193  
194 194  (((
195 -== **5. Updating Charge Status**: ==
197 +== 5. Updating Charge Status: ==
196 196  
197 197  * 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.
198 198  * This step is crucial for tracking the charging status of multiple units, especially when handling a large number of nodes.
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209 209  
210 210  = **Downloading and Converting Seismic Data to MiniSeed Format** =
211 211  
212 -== **Node Registration and Software Setup** ==
214 +== Node Registration and Software Setup ==
213 213  
214 214  1. (((
215 215  **Registering Nodes in the System**:
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227 227  * Ignore the settings for seismic recordings in the subsequent window. Resetting instruments (e.g., sampling rate, gain) requires reprogramming via script.
228 228  )))
229 229  
230 -== **Data Downloading Process** ==
232 +== Data Downloading Process ==
231 231  
232 232  1. (((
233 233  **Initiating Data Download**:
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251 251  )))
252 252  )))
253 253  
254 -== **Handling Nodes During Download** ==
256 +== Handling Nodes During Download ==
255 255  
256 256  1. (((
257 257  **Monitoring Download Indicators**:
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