C21K (AEC-AON)

Station Notes

ADOPTED BY AEC
During 2018 service visit animal/bear damage was noted:
- Door was open. Some material was littered outside. Q330 was hanging off of shelf. Vaisala wind pegs pecked off. Soil probe conduit was yanked across the ground after wires were severed. Otherwise, not too bad.

Service Plan

Site Access

Helicopter access from Utkiagvik or Umiat or Ivotuk
It might be possible to land a bush plane on the ridge for service.

Site Contact

No site contact

Site Visits

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

STATION CODE: TA.C21K

STATION LOCALE DESCRIPTION: Knifeblade Ridge, 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_15 Service (R. Bierma, J. Miner)
USArray Station Service Report
Form V1.0

STATION CODE:
TA.C21K

STATION Locale Description:
Knifeblade Ridge, Alaska

STATION SERVICE LOG DATE:
20200815

STATION/SENSOR DOWN TIME (UTC):
Station offline for ~15 minutes, 19:50 for station service

SERVICE DESCRIPTION:
AON battery supplement. Upgrade CC firmware and collect Baler media. Check BGAN antenna cable. Check Vaisala.
UPON ARRIVAL:
Station was in good condition with no wildlife damage.
ACTIONS TAKEN:

Add 2 LiFePO4 batteries.
BGAN cable replaced.
CC firmware upgraded to 1.20.
Baler media swap.
Verified the station configuration.

EQUIPMENT REMOVED:
NA

EQUIPMENT INSTALLED:
LiFeSO4 batteries: sn - 5724, bc - 5017941; sn - 5727, bc - 5017944

COMMENTS:
BGAN signal increased after swapping the cable. Was connecting on narrow before the swap but increased to 68.2 signal strength after the swap.
Door locked and taped prior to departure.

VISITOR:
1. Miner
2. Bierma
3. Bue (Alpine Air)
ON NEXT VISIT:
n/a
CHANGES AFFECT INSTRUMENT RESPONSE: n/a
2018_08_16 Service (R. Bierma, D. Bloomquist)
2017_08_17 Install (R. Bierma and M. Sanders)