Earth Tides : Periodic strains primarily at diurnal and semi-diurnal periods generated in the solid Earth by the gravitational attraction of the Sun and the Moon, firstly observed by Ernst von Rebeur- Paschwitz (1892, 1893)
Peter Bormann, Keiiti Aki, William H. K. Lee, and Johannes Schweitzer (Compilers and Amenders), Glossary of Terms Interest to Earthquake and Engineering Seismologists (Version 1), Publication records from external use of GFZ scientific infrastructure, Germany 2011. http://gfzpublic.gfz-potsdam.de/pubman/item/escido c:56137:3/component/escidoc:56143/Glossary_rev1.pd f, (ND/ Erthq - Amer) {980}