Fig. 2: Comparison of polarisation direction of measured Rayleigh waves and air pressure at sea level for January 2015 measured at station DY2G.
From: Uppermost crustal structure regulates the flow of the Greenland Ice Sheet

Left: Polar histogram of polarisation directions as a function of frequency in Hz of measured Rayleigh wave with a DOP ≥ 0.95. Right: Map of monthly average air pressure at sea level, which acts as a proxy for ocean wave interactions. The histogram along the edge of the map is the sum of all polarisation directions of measured Rayleigh waves and the red triangle is the location of station DY2G.