Abstract

We construct a linear model of microseism power as a function of sea-ice concentration and ocean-wave activity based on seismic data for a station located on northern Ellesmere Island. We find the increase in microseism power over the last 32 years reflects the long-term loss of sea ice and increasing ocean-wave activity in the Arctic Ocean likely associated with climate change. We assess the model performance and its coefficients to determine a representative region over which sea-ice concentration and ocean-wave activity most directly influence the microseism power at the single station. We conclude that seismic data can potentially help refine in-situ observation and improve the spatiotemporal monitoring of multiyear sea ice as it changes due to climate forcing.