SINUSOIDAL MODEL DEVELOPMENT FOR THE STUDY OF DIURNAL VARIATION OF SURFACE DISSOLVED OXYGEN FOR THE LAKE SUBHAS SAROBAR, KOLKATA
MIHIR PAL *
Department of Physics, Ramthakur College, Agartala-799003, India.
NIHAR R. SAMAL
Institute for Sustainable Cities, City University of New York, 695 Park Ave, New York, NY 10065, USA.
MALABIKA B. ROY
Gandhi Centenary B. T. College, Habra, North 24th Paraganas, West Bengal, India.
PANKAJ K. ROY
School of Water Resources Engineering, Jadavpur University, Kolkata-700032, India.
*Author to whom correspondence should be addressed.
Abstract
In this paper an attempt is made to generate a mathematical model for the study of diurnal variation of surface dissolved oxygen (DO) of Subhas Sarobar Lake, Kolkata. For designing the mathematical model Fourier analysis method is taken in to consideration. Such developed mathematical model must put a signature of regional health condition of lake surrounding. Both the experimental and mathematical simulated results suggest that there exists almost similar trends of sinusoidal variation in surface temperature and surface DO of this lake water in their diurnal profile. Moreover the change in observed diurnal variation of surface DO of lake water in future if any, can give indication about the change in regional health condition of the lake. Actually this type of modeling approach will be able to deal with a wide spectrum of water resource as well as regional environmental problem issues.
Keywords: Fourier analysis, sinusoidal model, dissolved oxygen, Subhas Sarobar