Melting ice with high-frequency vertical motion

Technical info

Tabulated data:

Tabulated file containing all relevant information regarding the experiments (parameters and measurements). The melting rate results presented in the research article are contained in this file.

•  Parameters
  • Frequency:
    • Name: 'omega_radPs'
    • Units: rad/s
  • Amplitude:
    • Name: 'A_mmPs'
    • Units: mm/s
  • Oscillation speed (maximum):
    • Name: 'Umag_mPs'
    • Units: mm/s
• Basic measurements (physically measured)
  • Elapsed time (final):
    • Name: 't_hr'
    • Units: hours
  • Ambient density (initial / final):
    • Name: 'rho0_kgPm3', 'rhof_kgPm3'
    • Units: kg/m^3
  • Mass (initial / final):
    • Name: 'm0_kg', 'mf_kg'
    • Units: kg
  • Ambient temperature (initial / final):
    • Name: 'T0_degC', 'Tf_degC'
    • Units: degrees Celsius
  • Maximum ice width (W; x-axis; initial / final):
    • Name: 'x0_mm', 'xf_mm'
    • Units: mm
  • Maximum ice thickness (L; y-axis; initial / final):
    • Name: 'y0_mm', 'yf_mm'
    • Units: mm
•  Basic measurements (acquired from edge-detection / cuboid assumption)
  • Average ice height (H; z-axis; initial / final):
    • Name: 'H0_m', 'Hf_m'
    • Units: m
  • Average ice width (W; x-axis; initial / final):
    • Name: 'W0_m', 'Wf_m'
    • Units: m
  • Average ice thickness (L; y-axis; initial / final):
    • Name: 'L0_m', 'Lf_m'
    • Units: m
• Detailed measurements (acquired from edge-detection)
  • Ice frontal area (x-z plane; initial / final):
    • Name: 'F0_m2', 'Ff_m2' 
    • Units: m^2
  • Ice frontal perimeter (x-z plane; initial / final):
    • Name: 'P0_m', 'Pf_m'
    • Units: m
  • Ice surface area (cuboid assumption; initial / final):
    • Name: 'SA0_m2', 'SAf_m2'
    • Units: m^2
• Important measurements:
  • Face melting rates (one-sided; from average ice width):
    • Name: 'm1_height_mPd', 'm1_width_mPd'
    • Units: m/day
  • Face melting rates uncertainty (one-sided; from average ice height):
    • Name: 'm1_height_mPd_pm', 'm1_width_mPd_pm'
    • Units: m/day
  • Volumetric melting rate (from mass and time-mean cuboid surface area):
    • Name: 'm3_V_mPd'
    • Units: m^3/day

Melting data: Edge-detection data

Each file is a netCDF containing:

• Raw images of the ice (backlit & shadowgraph experiments during an experiment)
  • Variable: 'raw'
  • Datatype: 'double'
  • Units: ''
  • Dimensions: [z x t]
• Edge-detection masks
  • Variable: 'mask'
  • Datatype: 'logical'
  • Units: ''
  • Dimensions: [z x t]
• Edge-detection aligned and summed mask (time c-axis)
  • Variable: 'mask_sum'
  • Datatype: 'double'
  • Units: 'days'
  • Dimensions: [z x]
• Associated vectors (time, space)
  • Variables: 't', 'z', 'x'
  • Datatype: 'double'
  • Units: 'days', 'm', 'm'
• Experiment parameters (frequency, amplitude, initial ice mass, and initial ambient density and temperature)
  • Variables: 'omega', 'amp', 'rho', 'mass', 'temp'
  • Datatype: 'double"
  • Units: 'rad/s', 'mm', 'kg/m^3', 'kg', 'degrees Celsius'

The ice perimeters presented in the supporting information of the research article are contained in these files.

Velocity data: Optical-flow data

Each file is a netCDF containing:

• Processed velocity fields (1 second or 1 period):
  • Variable: 'u', 'v'
  • Datatype: 'double'
  • Units: 'm/s'
  • Dimensions: [z x t]
  • Note: the sign of 'v' is flipped (by mistake - has been corrected in gifs)
• Associated vectors (time, space)
  • Variables: 't', 'z', 'x'
  • Datatype: 'double'
  • Units: 'seconds', 'm', 'm'
• Experiment parameters (frequency, amplitude, initial ice mass, and initial ambient density and temperature)
  • Variables: 'omega', 'amp', 'rho'
  • Datatype: 'double"
  • Units: 'rad/s', 'mm', 'kg/m^3'

The velocity fields presented in the research article are contained in these files.

Gifs

Raw image data

Time series of the raw images of the ice during an experiment.

Each gif shows a single figure with:

• Image: 'raw'
• Position: 'x' (cm), depth 'z' (cm)
• Time: 't' (hh:mm:ss.SSS)

Optical flow data

Time series of the velocity fields during an experiment. 

Each gif shows a three figures:

• Images: 'u', 'v', 'U'
• Position: 'x' (cm), depth 'z' (cm)
• Colorbars: 'cmocean:balance' (mm/s), 'cmocean:balance' (mm/s), 'gray' (log10 mm/s)
• Time: 't' (mm:ss.SSS)

Where 'U' is the velocity magnitude.