1989年7月18日至9月10日,日本海区水产研究所,工业技术院电子技术综合研究所、富山县水产试验场等单位,联合在富山县冰见市外海16公里处的水域,开始了一项调查计划。他们从富山湾水深300米处,将富有营养盐的深层水吸上来,喷散于海面上,目的为了增加洄游鱼群的 July 18, 1989 to September 10, 1989, the Japan Sea Area Fisheries Research Institute, Institute of Electronics Technology Industrial Technology Institute, Toyama Fisheries Experimental Field and other units, together in Toyama Prefecture, outside the city of ice see sea water 16 kilometers, began A survey plan From the depth of 300 meters at Toyama Bay, they sucked up the nutrient-rich deep water and spread it on the surface of the sea in order to increase the number of migratory fish species