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A one year comparison of radar and pressure tide gauge at Goa, west coast of India

DRS at CSIR-National Institute of Oceanography

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Title A one year comparison of radar and pressure tide gauge at Goa, west coast of India
 
Creator Mehra, P.
Desai, R.G.P.
Joseph, A.
VijayKumar, K.
Agarvadekar, Y.
Luis, R.
Sundar, D.
Viegas, B.
 
Subject pressure gauges
sea level measurements
 
Description At many locations absolute pressure gauges are used to obtain sea level data. Therefore, knowledge of the other physical processes which effect the sea level measurements at the coast is very important to insert the required corrections. Data from the radar and an absolute pressure gauge are obtained over a period of one year from the test site at Verem, Goa, India. The variance of difference between the radar and absolute pressure gauge is 15.9 cm sup(2), which reduces to 5.7 and 4.0 cm sup(2) respectively, when atmospheric pressure and water density variations are introduced for obtaining sea level from an absolute pressure gauge. The regression analysis indicates that atmospheric pressure, water density and rainfall can account for the difference individually up to 71%, 33% and 27% respectively. The aim of the present study is to quantify the effects of atmospheric and oceanographic variables while measuring sea level using pressure gauges and to highlight the advantages of the radar gauge over other type of gauges with regard to easy installation, maintenance and could be given precedence in future applications
 
Date 2009-12-08T07:00:33Z
2009-12-08T07:00:33Z
2009
 
Type Conference Article
 
Identifier Proceedings of the International Symposium on Ocean Electronics (SYMPOL-2009), 18-20 November 2009. eds. by: Pillai, P.R.S.; Supriya, M.H.; 173-183
http://drs.nio.org/drs/handle/2264/3462
 
Language en
 
Rights At many locations absolute pressure gauges are used to obtain sea level data. Therefore, knowledge of the other physical processes which effect the sea level measurements at the coast is very important to insert the required corrections. Data from the radar and an absolute pressure gauge are obtained over a period of one year from the test site at Verem, Goa, India. The variance of difference between the radar and absolute pressure gauge is 15.9 cm sup(2), which reduces to 5.7 and 4.0 cm sup(2) respectively, when atmospheric pressure and water density variations are introduced for obtaining sea level from an absolute pressure gauge. The regression analysis indicates that atmospheric pressure, water density and rainfall can account for the difference individually up to 71%, 33% and 27% respectively. The aim of the present study is to quantify the effects of atmospheric and oceanographic variables while measuring sea level using pressure gauges and to highlight the advantages of the radar gauge over other type of gauges with regard to easy installation, maintenance and could be given precedence in future applications
 
Publisher CUSAT