Power 20 : The rate, often expressed in watts, at which energy is fed to or taken from a device; generally analogous to flux. In radar it usually refers to the rate at which radio energy is radiated from or received at the antenna
Intergovernmental Oceanographic Commission IOC technical series 37, Tsunami Glossary (A glossary of terms and acronyms used in the tsunami literature - English), , United Nations Educational, Scientific and Cultural Organization UNESCO, Paris, France 1991. http://unesdoc.unesco.org/images/0008/000885/08853 8eb.pdf, (ND/ Tsunami Sci - Brit) {590}