The Earth's hum: the excitation of Earth normal modes by ocean waves, Webb, S. C. , Geophysical Journal International, Aug, Volume 174, Issue 2, p.542-566, (2008), DOI 10.1111/j.1365-246X.2008.03801.x Abstract

The Earth's 'hum' is driven by ocean waves over the continental shelves, Webb, S. C. , Nature, Feb 15, Volume 445, Issue 7129, p.754-756, (2007), Doi 10.1038/Nature05536 Abstract

Pulse of the seafloor: Tidal triggering of microearthquakes at 9 degrees 50'N East Pacific Rise, Stroup, D. F.; Bohnenstiehl, D. R.; Tolstoy, M.; Waldhauser, F.; Weekly, R. T. , Geophysical Research Letters, Aug 3, Volume 34, Issue 15, p.-, (2007), Doi 10.1029/2007gl030088 Abstract