Non-tidal oceanographic fluctuation characteristics recorded in DONET ocean-bottom pressure time series using principal component analysis

Abstract

We applied a principal component analysis to the long-term continuous data from a dense and wide ocean bottom pressure gauge network • Our principal component analysis revealed the spatiotemporal characteristics of the meandering of the ocean geostrophic currents • We propose a method to discriminate the transient tectonic signal from the bottom pressure data based on amplitudes of principal component