Accession Number : ADA293559

Title :   Developing Acoustic Technologies for Improving Fish Passage and Protection in the Columbia River Basin: Program Rationale.

Descriptive Note : Final rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB

Personal Author(s) : Nestler, John ; George, John ; Ahmad, Falih ; Carlson, Tom

PDF Url : ADA293559

Report Date : FEB 1995

Pagination or Media Count : 37

Abstract : Aquatic environments are rich in complex sound stimuli generated by wave action, internal structures of fishes, and movements of water, aquatic biota, and substrate. The capability of fishes to detect and respond to pressure and water particle motion components of sound fields is well documented. At every stage of their migration down the Columbia River system, smolts are acquiring and processing information using their sensory systems and responding in definite, and perhaps, very predictable ways. However, understanding this capability is limited by the inadequacy of standard acoustical or hydrodynamic methods to describe pressure and particle motion components of sound fields relative to fish sensory systems. There is no ambiguity, however, that fishes possess a very well-developed, highly sophisticated sensory system employed to perform those daily functions required to sustain life. It seems unreasonable to assume that fishes abandon these behaviors when they approach dams or enter intakes.

Descriptors :   *STRUCTURAL PROPERTIES, *HYDRODYNAMICS, *HYDRAULIC MODELS, *FISHES, *DAMS, *ANIMAL MIGRATION, FUNCTIONS, WATER WAVES, TURBULENCE, FLOW FIELDS, INTERNAL, SOUND, STANDARDIZATION, ACOUSTICS, STIMULI, RIVERS, AQUATIC ORGANISMS, DAILY OCCURRENCE, BASINS(GEOGRAPHIC), BACKGROUND NOISE, SENSES(PHYSIOLOGY), INFORMATION PROCESSING, IMPINGEMENT, COLUMBIA RIVER.

Subject Categories : Civil Engineering
      Biology

Distribution Statement : APPROVED FOR PUBLIC RELEASE