A resistance tide gauge
By: Norman Brown Pigeon
Contributors: Naval Postgraduate School (U.S.)
Publisher: Naval Postgraduate School
Published: 1967
Place of publication: Monterey, Calif
Language: eng
Format: Electronic resource
Number of pages: 66
Description: The design, construction, calibration, and field application of a simple resistance-type tide gauge are presented. The gauge measures coastal water level in relation to an elevation reference. A summary of previously available tide gauges is made with advantages and disadvantages noted. The gauge sensor consists of a high resistance wire within a mercury-filled capillary. The mercury level in the capillary is pressure-linked to the sea water column and responds to changes of water level over a wide period range. The mercury column height changes the current-conducting length of the resistance wire in the capillary. the change in resistance is, therefore, linear with column height. The resistance element forms one arm of a Wheatstone bridge, Laboratory evaluation and calibration are described. Recorded field observations of the resistance gauge are compared to the record of a "standard" tide gauge at the same location.
Notes: Thesis Advisor(s): Denner, W. W.

"June 1967."

Description based on title screen as viewed on November 13, 2007.

Thesis (M.S. in Oceanography)--Naval Postgraduate School, June 1967.

Includes bibliographical references (p. 45).

"New limitation change: Approved for public release, distribution unlimited. Authority: ST-A USNPS LTR, 18 Oct 71."

Also available in print.

Mode of access: World Wide Web.

System requirements: Adobe Acrobat Reader.

US Army (USA) author.

dk/ upgraded 1/7/08

dk/ original upgraded 1/7/08