Acoustic Calibration of Echo Soundings: Applications in Shelf Region Off Northern Taiwan
Resource
Terrestrial, Atmospheric and Oceanic Sciences 12 (4): 663-684
Journal
Terrestrial, Atmospheric and Oceanic Sciences
Journal Volume
12
Journal Issue
4
Pages
663-684
Date Issued
2001
Date
2001
Author(s)
Abstract
With a preset echo sounding velocity, each bathymetric measuremen t can be corrected off-line numerically. This article presen ts an iteration al gorithm of acoustic calibration for a represen tative acoustic profile versus depth of water column obtained in the survey area. In addition, differen t kinds of acoustic profile, represen ted by polynomial regression equations, were addressed offshore north Taiwan. Results gave a large variety of pat terns in acoustic profile within a small limit of territories in the shelf region, indicating that bathymetric measurements collected off northern Taiwan should be calibrated with much care. However, using an expected mean velocity at 1525 mis, sounding accuracy with deviation less than 0.2 % was obtained on the shelf in the su mmer.
SDGs
Type
journal article
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