Dfm4

Site Logs

10 Sept 2008 8:52am ADT Emily & Joel Homan

• Uneven terrain under SR50. Distance to ground variable from 116cm-127 cm
• Trimmed vegetation and added bark chips
• Measured distance under sensor - avg ~110 cm
• Changed distance in program from 115 cm to 110 cm.
• added electric fence
• next trip bring spare yellow brackets to help keep wire off fenceposts.

16 Jun 2008 Emily & Ken

• After reviewing data at Toolik, data shows damage to anemometer, hmp45c, and sr50
• sr50 data went from 12 cm to 25 cm in one hour
• site visit indicated an animal (most likely a bear) ripped wires out of the instrument box:
  • YSIx3
  • HMP45C
  • anememoter
  • blu/red wire from junction box
  • sr50?
• SR50 distance (old) ~115 cm avg.
• replaced SR 50
  • old s/n c5011
  • new s/n c4387
  • distance to ground is the same
• HMP45C head replaced
  • old s/n B0110061
  • new s/n C1440007
• loose wires, rewired all sensor wires that came loose out of box

• Also note that the trench for the cables running from the tipod to the snow sensor was dug up and buried cables/conduit is exposed.
• the bear also pulled the ysix3 and hmp45c out of its housing and out of the bottom of the box, but they were not broken

May 2008

Note EKY 6/6/08, Bob and Jeff visited this site in may 08 and fixed the antennae. Site is now transmitting data.