SAMCoT - Annual Report 2015

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13 SAMCoT • ANNUAL REPORT 2015
In-situ tests for the compressive, tensile and shear strength
of floating sea ice were performed with an original rig
creating horizontal load over the entire ice thickness.
Tests for flexural strength and torsion strength were
performed with an original rig creating a vertical load in
the upward and downward directions. Test results will be
used for the formulation of the failure envelope of floating
ice for in-plane and bending deformations. Oceanographic
measurements were performed in the Van Mijen Fjord
(west of Spitsbergen) on shallow water covered by ice, near
the front of Paulabreen Glacier, and in the Wahlenberg
Fjord (west of North-East Land) below level ice and around
floating icebergs frozen in fast ice. Morphological studies of
two icebergs in the Wahlenberg Fjord were performed with
a laser scanner (Riegl Vz-1000). The shapes of iceberg sails
and iceberg masses were reconstructed using collected
data. Monitoring of surface waves in the marginal zone of
Monitoring of Sea Ice and Iceberg Drift,
Mechanical Properties of Ice and Applied
Oceanography
To gain further knowledge in the areas of monitoring of
sea ice and iceberg drift, mechanical properties of ice and
applied oceanography, field works were focused on in-situ
tests of ice strength, morphological studies of icebergs,
standard oceanographic measurements in ice covered
waters (i.e. Conductivity, Temperature, and Depth (CTD)
profiling; Acoustic Doppler Current Profiler (ADCP) profil-
ing of water velocity profiles; Acoustic Doppler velocimetry
(ADV) measurements of water velocity in the ice adjacent
layer), monitoring of wave damping in the marginal zone of
drift ice, deployment of ice trackers on drift ice ridges and
monitoring of ice load on fixed quays.
studies of icebergs, standard oceanographic measurem nts in ic covered waters (i.e. Conductivity,
Temperature, and Depth (CTD) profiling; Acoustic Doppler Current Profiler (ADCP) profiling of water
velocity profiles; Acoustic Doppler velocimetry (ADV) measurements of water velocity in the ice adjacent
layer), moni ring of wave damping in the marginal zone of drift ice, deployment of ice trackers on drift
ice ridges and monitoring of ice load on fixed quays.
a) b)
Figure WP1_2. Deployment of ice tracker with thermistor-string on drift ice ridge (a). Drift
trajectory of the ice tracker (b).
a) b)
Figure WP1_3. Laser scanning of the iceberg in the Wahlenberg Fjord a), laser scan of the iceberg
b).
M
ava
M
ava
Figure WP1_3. PhD candidate David Wrangborg
using the Laser scan to capture an Iceberg in
the Wahlenberg Fjord. The result of the scan is
shown here superscript to the photo.
Figure WP1_2. Deployment of ice tracker with thermistor-string on drift ice ridge a).
Drift trajectory of the ice tracker b).
a) b)