Tuesday, November 11, 2014

Final measurement log, and it's a doozy!

Today is our final log- we're doing what's called an 'incremental'
tempeerature log, running the probe down in increments and then
stopping to let the probe equilibrate.  In planning this run, we
figured on measuring at 10 meter increments for 10 minutes at a time.
With 762 meters to log, we'd have 77 stops (including the one at
"zero" just below the surface).  So, 77 stops, 74 10 minutes + 3 1 hr
stops = 920 minutes stop time.  Going down at 2 m/min, we will also
have 380 min of down time.  So 1300 minutes to get to the bottom,
assuming 100% efficiency.  Then going 4 m/min up, 190 minutes up, or
if we can go 8, 95 minutes.. say 100 to 200 minutes to come up.  So
between 1400 and 1500 minutes = 23-25 hours total.

As I write this, we're about 8 hours in.  Going to be a long night!

[Settled in for logging.  David at the controls, Maurice at the stove, and I'm, um...  Supervising.]


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