Accession Number:

ADA355152

Title:

Acoustical Reverberation Level Modeling of Underwater Riverine System,

Descriptive Note:

Corporate Author:

PACIFIC NORTHWEST RIVER BASINS COMMISSION VANCOUVER WA

Personal Author(s):

• Bain, Brantley

Report Date:

1998-08-20

Pagination or Media Count:

30.0

Abstract:

Sonars used to count migrating salmon in the Pacific Northwest must operate in a complicated and variable acoustic environment. This paper discusses the acoustic properties which affect the performance of salmon enumeration methods. The methods used must be able to take into account variable site geometry and river bed characteristics. From this information, a background and target reverberation levels can be calculated. Using this information, guidelines for sonar site selection and configuration can be established.

Descriptors:

• *SITE SELECTION
• *REVERBERATION
• *SONAR
• *FISHES
• *UNDERWATER
• *ACOUSTIC PROPERTIES
• ENVIRONMENTS
• MODELS
• SITES
• TARGETS
• VARIABLES
• VARIATIONS
• GEOMETRY
• RIVERS
• NUMERICAL METHODS AND PROCEDURES

Subject Categories:

• Biology
• Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE