Accession Number:

AD0289837

Title:

RESULTS OF A FIELD STUDY OF THE TIDE LINE MECHANISM

Descriptive Note:

Corporate Author:

NAVY MINE DEFENSE LAB PANAMA CITY FL

Personal Author(s):

Report Date:

1962-03-01

Pagination or Media Count:

39.0

Abstract:

The concentration of foam and trash to form a visible line along the boundary between two dissimilar water masses is a daily occurrence in the waters near Panama City, Florida. The name tide line is used to designate this phenomenon as its development and degeneration coincide with the ebb and flow of the tide. During the falling tide the water from St. Andrew Bay flows through the jetties into the Gulf of Mexico spreading outward as a thin surface layer. A brief investigation of this estuarine sea water boundary, carried out under various weather and sea conditions, was undertaken in the early winter of 1959. The thin layer of overlying estuarine water was found to be two to four feet deep with its front, the tide line, generally extending more than three miles offshore, before the rising tide caused its breakup. Abrupt changes in sound velocity, temperature, and salinity occurred at the interface between the estuarine and Gulf water masses. Based on the preliminary results obtained, a recommendation to continue investigation of tide line phenomenon is made.

Subject Categories:

  • Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE