NGEE Barrow 2013 Site Install Trip
Contents
May 2013 Trip
Purpose:
- Rewire Grid Site station with CR1000 & new multiplexers
- XX PakBus ID = 404
- XX Setup MD485s to get Grid online
- XX reconfigure Site C CR1000 for act as a pakbus router
- Change IsRouter to YES -> Available in advanced settings
- Change beacon interval on SDC7 to 60
- Snow Surveys
- Any other prep that's possible for the June trip
- Bring back shotgun
- slather anticorrosion goo on all 12V/G points?
- Record Thermal Conductivity Heater Resistance using a high-accuracy ohmmeter
- Swap out SR50A
- ARM visit if time
Shipping
- None
To Purchase
- XX Anti-Corrosion Goo
- XX Ziplocs
- In Barrow:
- XX Butane -> Going to put someplace (naturally)
- Battery Cleaner (haven't seen it)
- XX Food
Pre-trip to do
- done.
Stuff to bring
- XX Adirondack Tube
- XX Scale
- XX Thaw Probe
- XX Ziplocs
- XX GPS
- XX 4 Precision Resistors for new logger
- XX High Precision Voltmeter
- XX Duct Seal
- XX 80' of cable
Technical Gear
- Shotgun -- in Barrow already
- Keypads
- XX fish tape
- XX Tool Bags
- XX Computer & (packed) SC32B
- XX Serial Cables & spares
Food to bring out
- Optional
Probable Luggage
- Bob Personal Actionpacker [Bob #1]
- Work Actionpacker #1 [Bob #2]
- daypack for working
Rough on-site todo
- Copy wiring of Grid Site
- Transfer wires to new multiplexer & Logger
- Snowsurveys
- Measure Heater Resistances for all thermal conductivity probes
- Look to see if the C site pit 2 thermal conductivity sensors could be connected to a lower instrument enclosure.
- configure C as pakbus router for grid
- armor and run rs485 line between C and grid
Probable Schedule
- Tuesday
- Safety Briefing
- Get Trucks & Snowmachines
- Eat Lunch
- Visit Hut & Prepare for first field trip
- Visit Site
- Download Data
- Start Rewiring
- Start measuring precision resistors
- Odds and ends
- Run MD485 Cable to site C
- Barrow Shopping Items
- Wednesday
- 7am Up
- 7:30 Breakfast & Make lunch
- Visit Site
- Snow Surveys @ ABCD
- @ 2-4 Random Points within limits outlined below (start with 2 per site and see how long each takes)
- continue station rewiring
- Verify operation of MD485 Network
- Snow Surveys @ ABCD
- Thursday
- 7am Up
- 7:30 Breakfast & Make lunch
- Visit Site
- Finish Snow Surveys
- Finish Wiring
- Meet with Thomas
- Pack up
- Return to Fairbanks
Re: Snow Surveys
Larry,
Attached are the grid corner coordinates (DGPS) of the end-of-winter snow surveys I did in 2012 and that I repeated last week (all but site A). I used the MagnaProbe and have thousands of measurements from each grid. The measurements are aligned in ~S-N transects, which are located 4 m apart with a measurement every ~ft. These measurements overlap geophysics transects (John, Craig, Susan's).
Last year's average snow depth was about 51 cm, this year I think it was 39 at site B and C (site D 50 and 37 cm, respectively).
I also took density measurements at each site.
I do not think it is realistic to ask anyone to repeat this snowdepth survey every day during the melt. In fact, it would be impossible time wise. Instead, perhaps do a daily survey (of a portion of) the outer lines of the grid, ie its western and southern perimeters, for example?? I think it would be good to follow the "L" protocol of Rovansek. I also think we need a measurement every <0.5m in order to capture the spatial mosaic of snow accumulation in these landscapes.
I think it is critical to perform the ablation survey, including snow density, about the same time every day for each site (i.e. site A at 10am, Site B at 11am etc).
Name Grid Easting (m) Grid Northing (m) SP_A1 585527.004 7910503.004 SP_A2 585557.58 7910439.828 SP_A3 585627.052 7910474.226 SP_A4 585596.7 7910537.177 SP_B1 585802.228 7910297.959 SP_B2 585814.765 7910271.935 SP_B3 585843.449 7910286.087 SP_B4 585830.912 7910312.016 SP_C1 585903.79 7910340.005 SP_C2 585922.756 7910300.494 SP_C3 585966.613 7910322.093 SP_C4 585947.384 7910361.341 SP_D1 585931.474 7910571.739 SP_D2 585950.487 7910533.064 SP_D3 585994.132 7910554.454 SP_D4 585974.902 7910593.777
