www.seg.org/about/75/showimage.cfm?image=45Society of Exploration Geophysicists Foundation
8801 S. Yale ? Tulsa, OK 74137
Phone: 918-497-5538 ? Fax: 918-497-5557
A “Decibel” (dB) is not an expression of a specific quantity or amount; rather “decibels” are an expression of a measured amount relative to a known amount.