Determine the mass of snow or ice deposited at the site (over an area of 1 meter x 1 meter) for the same periods. Just as you did previously, you need to multiply the density of the snow or ice (see Figure 3 to get the numbers) by the thicknesses of the ice layers.

Mass of snow between 1783-1815 in kg/(m^2):

mass - 800kg/m^3

thickness - 8.8m

Mass of snow between 1815-1912 in kg/(m^2):

mass - 730kg/m^3

thickness - 28.05m

Mass of snow between 1912-1989 in kg/(m^2):

mass 540kg/m^3

thickness - 30.25m