A resistance tide gauge
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Authors
Pigeon, Norman Brown
Subjects
Resistance tide gauge
Water level measurement
Oceanographic instrument
Water level measurement
Oceanographic instrument
Advisors
Denner, Warren W.
Date of Issue
1967-06
Date
June 1967
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
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
Type
Thesis
Description
Series/Report No
Department
Meteorology and Oceanography
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
66 p.: ill., map
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.