## 3 Results and Discussion
### Iceberg Drift
#### 3.1.2 2019 Deployments  
Deployments made in 2019 were focused on the regions of Milne Fiord and Talbot Inlet on Ellesmere Island and the Humboldt and Petermann glaciers on the western coast of Greenland (Figure 3). The iceberg tracks reveal that many of the icebergs did not experience significant drift, except those deployed near the northern coast of Ellesmere Island (Figure 7). Beacons 300434063494100 and 300434063392070, deployed on large tabular icebergs near the terminus of the Humboldt Glacier, drifted slowly in looping patterns but remained within 100 km of their initial positions. Beacons 300434063394110 and 300434063495310 were deployed on icebergs near the terminus of the Trinity Glacier in Talbot Inlet. Beacon 300434063394110 drifted slowly across Talbot Inlet until July 2020, when the iceberg catastrophically broke apart, and the beacon was lost. Beacon 300434063495310 was able to drift out of Talbot Inlet but temporarily ceased transmitting in October 2019. When the beacon began transmitting again in May 2020, it had traveled over 1000 km to the southeast to southern Baffin Island. The iceberg continued to drift around the tip of Baffin Island, where it became grounded on a small island and eventually deteriorated. Of the four beacons deployed on Petermann Glacier, three ceased transmitting after the beacons became inverted, likely due to being blown over by a strong wind gust. One remaining deployed beacon, 300434063292950, continues to measure the daily displacement of the glacier (as of December 2023).  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline  & \begin{tabular}{c} **Deployment** \\ **Date (yyyy-** \\ **mm-dd)** \\ \end{tabular} & \begin{tabular}{c} **Hardware** \\ **Revision** \\ \end{tabular} & \begin{tabular}{c} **Days** \\ **Operational** \\ \end{tabular} & \begin{tabular}{c} **Positions** \\ **Recorded** \\ \end{tabular} & \
\begin{tabular}{c} **Distance** \\ **Travelled** \\ **(km)** \\ \end{tabular} &
\begin{tabular}{c} **Cause of Termination** \\ \end{tabular} \\ \hline
300434063418130 & 2018-09-03 & 1.0 & 435 & 10,231 & 506.2 & Iceberg deterioration \\
300434063415110 & 2018-08-27 & 1.0 & 310 & 5670 & 4037.1 & Iceberg deterioration \\
300434063419120 & 2018-08-28 & 1.0 & 709 & 10,665 & 2043.3 & Iceberg deterioration \\
300434063411050 & 2018-08-28 & 1.0 & 748 & 10,491 & 616.7 & Iceberg deterioration \\
300434063415160 & 2018-09-01 & 1.0 & 1460 & 28,944 & 417.3 & Battery depletion \\
300434063416060 & 2018-09-01 & 1.0 & 386 & 1915 & 90.7 & Iceberg deterioration \\
3002340632652700 & 2019-08-01 & 2.0 & 1170 & 16,700 & 3352.3 & Iceberg deterioration \\
300234065254740 & 2019-08-01 & 2.0 & 738 & 14,903 & 2270.7 & Inversion/water ingress \\
300434063496100 * & 2019-08-01 & 2.0 & 1401 & 1272 & 4.9 & Inversion/water ingress \\
300434063392350 * & 2019-08-01 & 2.0 & 399 & 621 & 1.4 & Inversion/water ingress \\
300434063292950 * & 2019-07-30 & 2.0 & 1530 & 1566 & 5.5 & Currently active \\
300434063498160 * & 2019-07-30 & 2.0 & 1402 & 1684 & 4.9 & Inversion/water ingress \\
300434063494100 & 2019-08-05 & 2.0 & 803 & 5236 & 234.3 & Inversion/water ingress \\
300434063392070 & 2019-08-05 & 2.0 & 1503 & 9963 & 529.7 & Iceberg deterioration \\
300434063394110 & 2019-08-01 & 2.0 & 331 & 5220 & 169.5 & Iceberg deterioration \\
300434063495310 & 2019-08-01 & 2.0 & 431 & 3272 & 2534.9 & Iceberg deterioration \\ \hline \hline \end{tabular}  
* Beacon deployed on Petermann Glacier, Greenland.  
\end{table}
Table 3: Record of continuous days of operation, cumulative distance travelled, and causes of loss of communication of Cryologger ITB deployments made during the 2018 and 2019 field seasons. Current as of December 1, 2023.