Figure 4
From: Exploring the link between microseism and sea ice in Antarctica by using machine learning

Spearman correlation coefficient maps for short period secondary microseism. Maps of Antarctica showing the space distribution of the Spearman correlation coefficient computed between sea ice concentration time series and RMS amplitudes, calculated per each considered station in the band 2.5–5.0 s. In (a) the long-period components of the time series were present, in (b) the long-period components were filtered out before performing the correlation analysis. The black dots indicate the locations of the considered stations.