Deterioration data collected from 'Petermann Ice Island-A-1-f' while grounded near Qikiqtarjuaq, Nunavut, 2015 - 2017 ...

• Main Authors: Mueller, Derek, Crawford, Anna, Crocker, Gregory, Mingo, Laurent
• Format: Dataset
• Language: unknown
• Published: Canadian Cryospheric Information Network 2019
• Subjects: ArcticNet; Nunavut; Petermann glacier; Qikiqtarjuaq
• Online Access: https://dx.doi.org/10.21963/13091; https://www.polardata.ca/pdcsearch/?doi_id=13091

A data collection program was carried out between October 2015 and September 2017 to monitor the thinning and overall deterioration of “Petermann Ice Island (PII)-A-1-f”. This large, tabular iceberg was a fragment of the 2012 Petermann Glacier calving event. Four field teams visited the ice island, and a stationary ice penetrating radar (sIPR) was installed on PII-A-1-f in October 2015 while the large, tabular iceberg was grounded near Qikiqtarjuaq, NU. The instrument was designed by Blue Systems Integration, Ltd. and was installed during the annual ArcticNet research cruise on board the CCGS Amundsen. It collected the first field dataset of ice island thinning, and along with surface ablation observations, the data were used to calibrate a forced-convection basal ablation model. Mobile IPR data were repeatedly collected over 2.4 km to assess the spatial variation in thinning and assess how well the sIPR measurements represented the conditions elsewhere on the ice island. Auxiliary data included photos, ... : There are limited field observations of the deterioration of ice islands (large, tabular icebergs) due to the difficult nature of data collection. A comprehensive monitoring program was carried out between October 2015 and September 2017 to monitor the deterioration of "Petermann Ice Island(PII)-A-1-f". The ice island was grounded near Qikiqtarjuaq, NU, over the monitoring period. Stationary and mobile ice penetrating radar data were collected to analyze the respective temporal and spatial variation ice island thinning. Auxillary data were collected to analyze surface and basal ablation, calibrate a popular iceberg basal ablation model, and monitor the surface areal extent of the ice island to determine the relative contributions of different processes to the overall deterioration of an ice island. These data can also be used for surface ablation model validation and 3D deterioration modelling efforts. The following manuscript, which utilized this dataset, is in preparation: Crawford, A.J., Mueller, D.R., ...