NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.50 [2012] >
IJPAP Vol.50(06) [June 2012] >


Title: Effect of salinity on the dielectric properties of water
Authors: Gadani, D H
Rana, V A
Bhatnagar, S P
Prajapati, A N
Vyas, A D
Keywords: Dielectric constant
Dielectric loss
Saline water
Sea water
Emissivity
Stogryn equations
Klein and Swift model
Issue Date: Jun-2012
Publisher: NISCAIR-CSIR, India
Abstract: The complex permittivity ='-j" of distilled water and NaCl solutions of concentrations varying from 5000 to 35000 ppm have been measured in the frequency range from 200 MHz to 1.4 GHz using a Vector Network Analyzer (VNA). The complex permittivity of saline water collected from Kanyakumari sea bank has also been measured in this frequency range. It has been observed that the dielectric constant of water decreases slowly with increase in frequency from 200 MHz to 1.4 GHz for given salinity of water. At given frequency, the dielectric constant decreases slowly with increase in salinity from 5000 to 35000 ppm. The dielectric loss of distilled water increases with increase in frequency from 200 MHz to 1.4 GHz, but for saline water it decreases with increase in frequency, over this frequency range. The decrease in dielectric loss with increase in frequency is more for higher salinity in water. The variation of complex permittivity of water with salinity and frequency is calculated using the Stogryn equations [IEEE Trans. On Microwave Theory and Techniques, August 1971, pp. 733-736] as well as with the Klein and Swift [IEEE Transactions on Antennas and Propagation, Vol. AP-25, No.1, January 1977, pp. 104-111] equations, and the results are found to be in good agreement with corresponding experimental values. The variation of emissivity with variation of salinity calculated at fixed frequencies of 0.5, 0.9 and 1.4 GHz have also been presented in the paper, which is very much useful for remote sensing applications of oceans.
Page(s): 405-410
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.50(06) [June 2012]

Files in This Item:

File Description SizeFormat
IJPAP 50(6) 405-410.pdf353.2 kBAdobe PDFView/Open
 Current Page Visits: 699 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 602485 since 06-Feb-2009  Last updated on 21-Oct-2014Webmaster: nopr@niscair.res.in