Long-term build up of swell in the lead-up to Wilkins and Voyeykov calving

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Readme file for the AAD 4528 dataset on the Wilkins and Voykeykov calving events in
2007--2008 (paper pending)

Version2: uploaded 19/11/2024

CL, RC and Voyeykov daily transects folders contain the daily ice cover for each shelf face with the data sorted as: Date_List,pack ice length (km), annual fast ice length (km), perannual fast ice length (km), sea ice length (km). Data was calculated with a shelf latitude mean + 10 degree latitude boundary and a shelf longitude mean +7, or -12 for the east/west boundary. Pack ice length was calculated using the ASMR2 ASI sea ice concentraton dataset and fast ice was calculated via the outputs from Fraser et al., 2012 landfast ice dataset.

Strain outputs folder contains both the strain calculated off the ice cover timeseries and the strain using a climatological average for ice cover. Each file contains Date_List,LowIce_Strain_Shelf_timeseries,w10d_strain_sum,w30d_strain_sum,w60d_strain_sum,w90d_strain_sum,w120d_strain_sum as its' file headers, with w##d indicating how many days there was a weighted flexural window applied to each timeseries, and the LowIce_Strain_Shelf_timeseries being the daily outputs. These strains can be converted to stress (which we used in our manuscript) by:

omega = (1/(2*(1-v^2)))*E*(epsilon*2);

with omega being stress (in kPa), E being the Elastus modulus (9*10^6), v is Poissons number (0.3) and epsilon is our calculated strain value.

The strain model contains our 1-dimensional strain calculator (current version: Plot_SeaIceLength_daily_now_stress.m, which is located in (...\Strain_Model\MultiFloes2\Main_Files\Projects\03-Nathan), alongside a script that will turn bedmap2 thickness/bed profiles into usable transects and codes (i.e. Solve_Study_L1, L2, Shelf etc) and a script which will load in paths (which you'll need to edit, as I'm the type of matlab user who doesn't like moving directories). Note: Figures 3 and 4 are also produced by the Plot_SeaIceLength_daily_now_stress.m, alongside a bunch of other outputs.

Wave statistics are present in ##_corridor_data.txt which provides the daily maximum from each idealised corridor output and ##_icelengths.txt is a summary file for average ice lengths.

Fast_Ice_Composities are a combination of Fraser et al., 2012 landfast ice dataset and ASMR_2 ASI dataset used to calculate ice cover. Flags are 0 - open ocean, 1 - ice sheet, 2 - islands, 3 - ice shelf, 4 - pack ice, 5 - annual fast ice, 6 - perennial fast ice, 7 - ice shelf edge.

Figure_outputs is the planned figures for this paper and the production files I've used. Since this update, the base files have been converted to .eps.

Lineage

Progress Code: completed

Notes

Purpose
To calculate the daily incoming strain for the Wilkins and Voyeykov in the leadup to their respective calvings in 2007--2008.