B18K (AEC-AON)

Station Notes

ADOPTED BY AEC
Bear damage noted during 2018 service visit
- On next visit:
  - Replace sensor cable
  - Use a longer length of liquidtight conduit so it can exit the hut at a better angle and be fully buried under grade. Secure the new conduit to the hut wall with one of the wind turbine u-bolts
Unofficially the last site installed for the TA!
Refer to Install report for location of soil temp sensor, it's not near the hut.
Potential noise sources: wind
Comms on Asia-Pacific BGAN satellite

Service Plan

Site Access

Helicopter access
The site was accessed for construction from Red Dog, using a supplemental fuel cache along the Kokolik River. The site was accessed during installation beginning in Wainwright, then refueling in Kotzebue.
In the future, it may be possible to arrange some logistics in Point Lay.

Site Contact

No site contact

Site Visits

2020_09_22 Removal (Adopted by AEC)
USArray Station Removal Report
Form V1.5

STATION CODE: TA.B18K

STATION LOCALE DESCRIPTION: Kokolik River, AK, USA

STATION REMOVAL LOG DATE: 20200922

STATION/SENSOR DOWN TIME (UTC): N/A
REMOVAL DESCRIPTION: Site was adopted by AEC and has not been removed.
ACTIONS TAKEN: Site was not visited during the adoption process.
LAT/LONG OF SENSOR HOLE: N/A

Top of Casing to hole bottom (indicate if sand present or evacuated): N/A
Bottom of wellcap to grade level: N/A
SENSOR ORIENTATION MEASUREMENTS:
Measured with Octans Unit: N/A
Measured with rods on pin: N/A
Casing/wellcap marked with reference orientation: N/A
SENSOR ORIENTATION: N/A
COMMENTS:
BGAN site, remote acquisition changeover to AK network.
REMOVED: N/A
DAMAGE: N/A
LEFT AT SITE: N/A
VISITORS:
Nate Murphy
NEXT VISIT: N/A
SITE STATUS: N/A
HOLE STATUS: N/A
2020_08_11 Service (R. Bierma, J. Miner)
USArray Station Service Report
Form V1.0

STATION CODE:
TA.B18K

STATION Locale Description:
Kokolik River, Alaska

STATION SERVICE LOG DATE:
20200811

STATION/SENSOR DOWN TIME (UTC):
Station offline ~2115-2145 UTC

SERVICE DESCRIPTION:
Resurrect BGAN comms. Add 2 Lithium batteries. Basic station upgrades for AON transfer.

UPON ARRIVAL:
Station in good condition. The door tape had been chewed off. The BGAN modem indicated "Not Attached".
ACTIONS TAKEN:
Attempts to update BGAN contexts to ds1 failed to resurrect the terminal, so the SIM card was swapped into another functioning terminal. The Narrow connection was reestablished easily.

Signal strength was at 61, so the BGAN antenna cable was replaced. SS improved to 67.

Baler media swapped.

Genasun Charge Controller firmware updated to 1.20

Soil temperature sensor hardware was removed from the ground and left in the hut; Hobo logger was removed.

EQUIPMENT REMOVED:
BGAN terminal: 5017127, IMEI: 353938030028108

EQUIPMENT INSTALLED:
BGAN terminal: 5018769, IMEI: 353938030028553
LiFeSO4 batteries: sn - 5782, bc - 5017991; sn - 5785, bc - 5017994

COMMENTS:
Door locked and taped prior to departure.

VISITOR:
1. Bierma
2. Miner
3. Bue (Alpine Air)
ON NEXT VISIT:
n/a

CHANGES AFFECT INSTRUMENT RESPONSE:
n/a
2018_08_17 Service (R. Bierma, D. Bloomquist)
2017_08_29 Install (R. Bierma and J. Theis)