11. May 2008
spring 2008 TSP drilling campaign in
persons for additional information: Hanne H.
Christiansen and Håvard Juliussen
and photos by Håvard Juliussen, Hanne H. Christiansen and Ole Humlum
of drilling equipment to Larsbreen March 13, 2008, shortly outside Longyearbyen.
here to read more about this part of the permafrost drilling campaign. Photo:
spring we have drilled 11 new boreholes, with a total length of 166 m here in
. The depth of the holes ranges from 5m to almost 40 m. Boreholes were made in
both sediments and bedrock. The holes are located in different landforms with
different meteorological conditions, from the strandflat at Kapp Linne (click
here for photo) on the west coast of Spitsbergen to a
pingo near Jansonhaugen, Adventdalen, in the central eastern part of
campaign involved logistic challenges in terms of transport and preparation of
drilling sites. The drill rig and compressor have been transported by helicopter
(see photo above), and on a sledge after a ski-track grooming machine (click
here for photo) and the UNIS tracked vehicle (click
here for photo). At one of the drilling sites, three meters of snow had to
be removed before drilling. A 45 ton bulldozer did the job in only a few minutes
(see photo below).
removing snow at one of the drilling sites in Adventdalen, central Spitsbergen,
April 29, 2008. This site was coosen for permafrost drilling to enable analysis
of the effect of a thick snow cover on permafrost temperatures. In addition,
continous 1hr ground surface temperature measurements are at hand from this site
since 1999. Three metres of snow has to be removed before drilling could
one hole was drilled in one day using hammer drilling with the Sintef/UNIS owned
drill rigg named Majgøril. The drilling was performed by Jomar Finseth, Sintef.
Logistic support was given by Jørgen Haagensli, UNIS. Several TSP scientists
have been involved in the planning and the drillings. TSP post.doc. Håvard
Juliussen, have been participating in most of the drillings.
holes are cased with closed plastic tubes and are currently being
instrumented with thermistor strings so that we can measure the temperature of
the permafrost continuously. These installations are an important part of the
permafrost observatory that the TSP Norway project is establishing here in
Nordenskiölds land in
. Some of the holes are PYRN-TSP holes, part of a Nordic Permafrost Young
Reseachers Network (PYRN) project on shallow drillings in sediments. This work
is coordinated by Håvard Juliussen in
rig on heavy sledge at Isfjord Radio, Kapp Linne, westernmost Spitsbergen, April
21, 2008. Photo:
rig on sledge pulled by one of UNIS tracked wehicles, April 28, 2008. Location:
Waterfall Pingo, uppermost Adventdal, central Spitsbergen. Photo:
Hanne H. Christiansen.
on the strandflat south of Isfjord Radio (seen in background) April 22, 2008,
near the west coast of Spitsbergen. Photo:
casing in borehole on Waterfall Pingo in uppermost Adventdalen, April 28, 2008.
The casing prevents the borehole from collapsing after removal of the drill. Photo:
Hanne H. Christiansen.
operation in progress on Waterfall pingo in uppermost Adventdalen, April 28,
2008. The drilling rig is seen to the left of the pingo crater, from where
escaping water forms a frozen waterfall during the winter. The pingo is about 25
m high. Photo: Ole Humlum.