Acute effects of electromagnetic pulses (EMP) on fish


2 Oregon Department of Fish and Wildlife, Marine Science Dr., Bldg. No. 3, Newport, Oregon 97365, USA


Six estuarine fish species common to Chesapeake Bay in Maryland and Virginia, USA were exposed to electromagnetic pulses (EMP) of 100-kv/m airfield strength at a risetime of ca. 10 nanoseconds per pulse. EMP was derived from a 2-stage Marx generator. Results infer that acute mortality will not occur in fishes swimming near the surface at distances>50 m from a U.S. Navy electromagnetic pulse radiation environmental simulator for ships (EMPRESS II) being field tested off the USA coastline.