Successful resistivity mesurements in bright sunlight? I don't think so! ;-)


By Daniels Karin Amby - Posted on 14 April 2008

 

After some hunting for a key to the room where the equippment is
stored, and some minor problem with getting a car that had a working
battery, we where finnaly of to Adventdalen and yet another
resisitvity mesurement. After parking I realized that there whas
something strange, something whas not the way it normally is. Then I
realized what it whas. The SUN whas shining on the car! Eaven on the
site! And what whas eaven more amazing, there whas no WIND. Just a
beautiful day, with ca 10 cm of fresh snow and about minus 20. For
the first time since autum I could feel the sun warming my face.

 

Normally, (I have to admit) I experience some resistance for
getting out of the relatively warm, safe and light car. When its
cold, dark, windy and snowing outside. When you park at the seventh
reflektor pole after passing the old northernlight- station cus you
know that from there if you just walk straght out in the darkness you
will be able to, evventually, spot the reflecting tape on the
bamboo-sticks marking the site in the light of your head-lamp..

 

Anyways, this feeling whas absolutly not present this day, I could
see that there whas no Polarbears around, just by looking out of the
car, and I wanted to get out there, have the sun in my face and get
the mesurement started. So we did, or at least we tried to..

 

We went out, grabbed the rifle the flaregun and the measuring
equippment , packed it on the pulka and walked over to the, now from
the road clearly visible, site. We attatched the first three
cables (wich includes attatching 126 crocodile- clips, some easy to
open, and some NOT) Started the device and did run the electrode
test. 18 electrodes missing..
Frown
The first ten are always missing in the first mesurement, but now
there whas suddenly another eight missing... We scheked all the
crocodile-clips, and rerun the test, still 18 missing...

So Emil, (the measuring device, A terrameter SAS 1000/4000) whas
giving us some strange problems again.. We gave it the name Emil
(After the Astrid Lindgren caracter that always does things he is not
allowed to) in the darkest time of the year, when we experienced at
least one new error during eavry mesurement. After cristmas Emil
started to behave really nicely, and cauced almost no trouble at all,
so his sudden stubborness surprised us this beautiful day.. We
dicided to still compleate the mesurement to compare it with the
mesurement that will be done on friday, as a part of the permafrost
course at UNIS. So we excluded the "missing"
electrodes started the mesurement and went off to the Ice wedge
site.

 

Steffi, the other half of the faboulous "Team Adventdalen"
had promised that we would mesure the Ice wedges as well today. Since
I neaver done it before I whas happy to get yet another fieldwork
experience. After locating the site On the way from the car to the
site we looked for cracks in the snowpack, and mesured the depth and
length of them, and Steffi made scetches of how they looked. At the
site itself we mesured the distance between a lot of metal poles
sticked in the ground after a mysterious pattern that steffi had
control over aided by a ”map”.

Then we hedaded back to the resisitivity site to chek on Emil..
When we arrived he told us he missed eaven more of them.. When we
told him to continue anyways he kept on telling us aboute electrodes
withoute contact. So we decided to quit the mesurement and try
another day. Since it whas late and we bouth had stuff to do at UNIS
the next day...

Its always frustrating when the mesurements doesent work.. And
eaven more frustrating when you dont know why.. Our collegue that
mesures the other site changed the fuse, thinking that whas the
problem.. But Emil is still not happy, soon we will try again..
Hopefully with better luck...

If anyone had similar problems and knows how to solve it, please let me know :-)

Daniels Karin Amby's picture

So this week I will try again.. Suggestions have been made that it might be the low temperatures (below -20) that made Emil stubborn, or more corectly the contacts to the ground, Emil is warm enough in his isolated box, eaven the display whas working just fine :-)

So, I hope for better luck //Karin



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