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Last modified by robert on 2026/08/12 13:08
From version 119.1
edited by robert
on 2026/08/12 13:08
Change comment: There is no comment for this version
To version 116.1
edited by robert
on 2026/06/29 16:42
Change comment: There is no comment for this version

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106 106  
107 107  [[HERE>>http://auspass.edu.au/field/NODES_blank_fieldlog.pdf]] is an example logsheet that works well for nodes, feel free to print and use!
108 108  
109 -== 2. Burial ==
110 -
111 -**ALL nodes should be buried flush with the ground, no exceptions**. If the node is sticking up the data data quality will be significantly reduced (especially the horizontal channels, see [[below>>https://auspass.edu.au/xwiki/bin/view/Instrumentation/SmartSolo%20Nodes/#HIGU-16Horizontalnoise26howtoavoid]]). It also catches wind, makes them more visible, etc. But mostly it makes the data bad.
112 -
113 -//Don't be lazy. Do it right. //
114 -
115 -[[An example of what not to do.>>image:1786503344572-296.jpg||data-xwiki-image-style-alignment="center" height="341" width="404"]]
116 -
117 -[[North channel PSD of the sensor in the picture above (it is not good)>>image:1786503812585-338.02.28 PM.png||data-xwiki-image-style-alignment="center" height="244" width="451"]]
118 -
119 -== 3. Node Placement ==
109 +== 2. Node Placement ==
120 120  )))
121 121  
122 122  **Site Analysis**:
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125 125  * Take photographs from various angles to document the site setup thoroughly. Have a colleague stand next to it pointing at it.
126 126  * Include a detailed site description in your notes.
127 127  
128 -== 4. GPS Considerations ==
118 +== 3. GPS Considerations ==
129 129  
130 130  (% class="wikigeneratedid" %)
131 131  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 (2 cm?) 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.
132 132  
133 -== 5. Visibility and Location Marking ==
123 +== 4. Visibility and Location Marking ==
134 134  
135 135  **Flag Placement**: Position a flag, preferably in a bright color (avoid green or yellow), near the instrument to aid in its future location.
136 136  
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139 139  * Use a GPS device to mark the instrument's exact location. Most modern cell phones can get to about a 3m error with their internal GPS also; you can probably also get away with investing a few dollars in a good app that shows error and lets you log markers.
140 140  * Also write the GPS down on paper (ie your [[LOG SHEET>>http://auspass.edu.au/field/NODES_blank_fieldlog.pdf]]).
141 141  
142 -== (% style="color:inherit; font-family:inherit; font-size:max(18px, min(20px, 14.4444px + 0.462963vw))" %)6. Charge Time, Pre-Deployment & Post-Deployment(%%) ==
132 +== (% style="color:inherit; font-family:inherit; font-size:max(18px, min(20px, 14.4444px + 0.462963vw))" %)5. Charge Time, Pre-Deployment & Post-Deployment(%%) ==
143 143  
144 144  * **Charging Duration**: Both types of nodes take approximately 6-8 hours to fully charge from a flat state.
145 145  * **Pre-Deployment Charging**:
146 146  ** Although the nodes hold their charge well, it's beneficial to give them a "top up" charge before deployment.
137 +
147 147  * **Operational Duration**:
148 148  ** When recording at 250 Hz, with GPS on and Bluetooth disabled, the instruments are expected to last about 30 days per charge cycle. If they are set to run only overnight, this can be extended to 60 days.
149 149  
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158 158  ** Charge levels for transport will be advised by the freighter. The required SoC will depend on volume and transport method (air, land, sea).
159 159  
160 160  (((
161 -== 7. Data Sharing and Metadata Creation ==
152 +== 6. Data Sharing and Metadata Creation ==
162 162  )))
163 163  
164 164  **GPS Data**:
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173 173  
174 174  * 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.
175 175  
176 -== 8. Additional Best Practices ==
167 +== 7. Additional Best Practices ==
177 177  
178 178  * **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.
179 179  
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Date
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1 -2026-07-09 10:45:51.967
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1 -Mark Goldman
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1 -I can verify that the default orientation for the SmartSolo 3C nodes is positive values for case motion to the South, West, and downwards. We have co-located nodes with permanent stations and noticed this correlation when comparing waveforms.