Fault Dip : The inclination of a fault plane relative to the horizontal in degrees. A dip of 0 degree is horizontal, 90 degrees is vertical. See Figs. 3.30 to 3.33 ??? in Chapter 3 of this Manual
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}