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Changes for page Field Deployment Guides

Last modified by KB on 2025/08/12 12:18
From version 14.1
edited by Jack Dent
on 2024/12/09 17:01
Change comment: There is no comment for this version
To version 16.2
edited by Jack Dent
on 2025/01/02 10:36
Change comment: There is no comment for this version

Summary

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Content
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15 15  * The site should be geologically stable and representative of the area's seismic characteristics.
16 16  * Accessibility and security of the site are also important factors.
17 17  * Conduct a detailed survey of the site, including topographical, geological, and geophysical assessments.
18 -* Prepare the site by clearing vegetation and leveling the ground.
18 +* Prepare the site by clearing vegetation and levelling the ground.
19 19  
20 20  = **Installing Sensors** =
21 21  
22 22  * Bury seismometers at an appropriate depth for noise reduction and stable ground coupling, typically 0.5-0.8 metre depth.
23 23  * Orient the sensors correctly using a compass, paying special attention to the north direction. When using a compass to orient the sensors, ensure it is kept away from metal objects or structures that could interfere with its magnetic field. Accurately determine the north direction for precise sensor orientation.
24 -* Ensure the sensor is leveled correctly. A paver or concrete slab can be used to allow for more accurate leveling.
24 +* Ensure the sensor is levelled correctly. A paver or concrete slab can be used to allow for more accurate levelling.
25 25  * It is recommended that the following sensors be installed with a PVC tube covering to prevent corrosion and other environmental degradation:
26 26  ** TC-120
27 27  ** TC-20
28 -**
29 -* Hold the sensor or sensor covering securely while infilling and packing the hole to ensure the sensor is kept level.
28 +** 3D lites
29 +* Hold the sensor or sensor covering securely while infilling and compacting the hole to ensure the sensor is kept level.
30 30  
31 31  = **Setting up Data Logger** =
32 32  
... ... @@ -38,7 +38,7 @@
38 38  32Gb card: 122 days @ 250hz or 305 days @ 100hz
39 39  
40 40  * Establish a reliable power source, such as solar panels, batteries, or local grid connection. Use a compass to align solar panels facing north in the south hemisphere for optimal sunlight exposure.
41 -* Set up a GPS antenna to provide accurate time synchronization for the seismic data
41 +* Set up a GPS antenna to provide accurate time synchronization for the seismic data.
42 42  * Ensure the GPS antenna has a clear view of the sky for optimal signal reception.
43 43  * Calibrate sensors and data acquisition systems for accuracy.
44 44  * Test for sensitivity, noise levels, and overall performance.
... ... @@ -52,6 +52,15 @@
52 52  * Document the installation process, including sensor types, orientations, locations, and system configurations, along with fire safety measures implemented.
53 53  * Record essential metadata for seismic data interpretation.
54 54  
55 += **Sensor protection** =
56 +
57 +Sensors can be covered with a PVC pipe to help prevent degradation of the components (i.e. sensor casing and cable connections), however, some sensors are made for direct burial (no protection). When installing a sensor, only use these two options. Do not try to protect the sensor via any other means such as a plastic bag or moisture absorbers & desiccants.
58 +
59 +(% class="box errormessage" %)
60 +(((
61 +DO NOT: bury the sensors with anything other than a PVC housing or direct burial. Other methods may damage the equipment more than protect it.
62 +)))
63 +
55 55  = **Step-by-step field installation guide (with images)** =
56 56  
57 57  
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68 68  (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)3. Place the seismometer on the paver and ensure it is levelled and oriented (remember to account for the declination in your area).
69 69  )))
70 70  |(% style="width:192px" %)(((
71 -[[image:1715740934594-394.jpg||height="179" width="179"]]
80 +[[image:1715740934594-394.jpg||height="203" width="203"]]
72 72  
73 73  (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)4. Depending on the model of the seismometer, place a protective PVC tub over it.
74 74  )))|(% style="width:191px" %)(((
75 -[[image:1715741200573-382.jpg||height="173" width="87"]][[image:1715741200573-909.jpg||height="173" width="87"]]
84 +[[image:1715741200573-382.jpg||height="203" width="102"]][[image:1715741200573-909.jpg||height="202" width="102"]]
76 76  
77 77  (% style="color:#000000; font-family:Arial,sans-serif; font-size:14.6667px; white-space-collapse:preserve" %)5. Fill in the hole whilst stabilising the sensor and packing the dirt firmly.
78 78  )))|(% style="width:191px" %)(((
... ... @@ -81,15 +81,15 @@
81 81  (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)6. Once the hole is filled and levelled, drive a stake (star pickets work well) into the ground next to the seismometer, and fit the wire panels over it, driving pegs into the north-facing side.
82 82  )))
83 83  |(% style="width:192px" %)(((
84 -[[image:1715742260851-696.jpg||height="214" width="214"]]
93 +[[image:1715742260851-696.jpg||height="220" width="220"]]
85 85  
86 86  (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)7. Attach the solar panel to this side, and the GPS to the stake (wrap the wire around the stake once or twice so it stays in position if it is detached).
87 87  )))|(% style="width:191px" %)(((
88 -[[image:1715741876857-916.jpg||height="174" width="174"]]
97 +[[image:1715741876857-916.jpg||height="218" width="218"]]
89 89  
90 -8. (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)Connect the seismometer, solar panel, and GPS to the logger and turn the logger on. Ensure "record on restart" is switched on. See "setting up data" for the remainder of step 8.
99 +8. (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)Connect the seismometer, solar panel, and GPS to the logger and turn the logger on. See "setting up data logger" and "ANU seismic data loggers" page for more details. Set the logger to record and ensure it starts recording.
91 91  )))|(% style="width:191px" %)(((
92 -[[image:IMG_0667.jpg||height="172" width="172"]]
101 +[[image:IMG_0667.jpg||height="218" width="218"]]
93 93  
94 94  9. (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)Cover the logger with a fire blanket, starting by placing it on the top, so the opening is underneath the logger.
95 95  )))
... ... @@ -98,7 +98,7 @@
98 98  
99 99  10. (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)Once all the sides of the blanket are tucked under the logger, cover the logger with rocks or dirt.
100 100  )))|(% style="width:191px" %)(((
101 -[[image:1715742099260-834.jpg||height="177" width="177"]]
110 +[[image:1715742099260-834.jpg||height="187" width="187"]]
102 102  
103 103  11. (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)Fold the other metal grating panel over and peg it into the ground. If the ground is too hard, a wire can be used to fix the metal grates to each other. This will also help reduce noise from the rattle of the cage prevent animals from getting to the logger.
104 104  )))|(% style="width:191px" %)(((