User's Manual

FOR OFFICIAL USE ONLY 11
5.2. Digging the Hole and Emplacing the Coyote UGS Node
The first step is to dig a hole to bury the Coyote UGS node. General guidelines for digging holes:
a) Select a suitable location for node emplacement
b) Dig a hole 12” (depth may be approximated ±1”) deep and twice the size of the Coyote UGS sensor
c) The base of the hole should be flat
Figure 9 – Coyote UGS node being emplaced in hole
5.3. Bury and Camouflage the Coyote UGS Node
Now that the CoyoteUGS node has been successfully activated and emplaced in a hole, it is ready to be buried
and camouflaged. Good seismic coupling is a key to optimal performance; therefore, care should be taken in
this step to ensure this. General guidelines for burying and camouflaging:
a) Ensure the base of the hole is flat and the base of the sensor is flat against the bottom of the 12” deep
hole. Note: As a quick field measurement guide, the UGS enclosure is ~6” high and it is approximately
another 6” to the base of the thicker part of the antenna
b) Repeatedly pack the dirt around the sensor as the hole is being filled. This will remove air pockets
around the sensor and enhance coupling of the earth to the enclosure
Figure 10 - Tightly pack soil around node during burial procedures