Hydrodynamics in a Mud Bank Regime during Nonmonsoon and Monsoon Seasons

Environmental isotopes to test hypotheses for fluid mud (mud bank) generation mechanisms along the southwest coast of India

“…However, we speculate that the occurrence of fluid mud is most likely influenced by physical marine processes such as interplay of currents and waves (Tatavarti and Narayana, 2006), wind induced upwelling (Philip et al, 2013) etc. as seen in the recent studies.…”

“…The fluid mud slide back to the offshore when the waves subside at the end of monsoon. Tatavarti and Narayana (2006) reported that the far infra-gravity waves (10 À3 e10 À2 Hz) predominate and play a vital role in the near shore dynamics during the southwest monsoon.…”

“…Some recent studies have been based on: hydrography (Kurup and Varadachari, 1975;Nair, 1985), physical oceanography Jiang and Mehta, 1996;Tatavarti and Narayana, 2006), water quality characteristics (Rao et al, 1984a;Balachandran, 2004) and ecology (Nair et al, 1984;Thompson, 1986) of the mud bank region and physical (Manoj Kumar et al, 1998), sedimentological (Ramachandran and Mallik, 1985;Mallik et al, 1988;Narayana et al, 2008), mineralogical (Nair and Murty 1966;Rao et al, 1984b), geochemical (Sheshappa, 1953;Jacob and Qasim, 1974;Ramachandran, 1989), hydrochemical (Nair and Balchand, 1992) and rheological (Fass, 1995;Jiang and Mehta, 1995) aspects of the mud. Although, some of the characteristics of the fluid mud have been explained by the above studies, its occurrence still remains a mystery.…”

Genesis of structural features of humic acids from the sediments of a high productive coastal zone

“…Mudbank (referred to as "Chakara" in local language), a unique localized phenomenon observed along the south west coast of India, represents zones of high biological activity. Much work has been done on its formation, sustenance, hydrography, and trace metal/nutrient dynamics of these zones Tatavarti and Narayana, 2006). HAs is a vital ingredient regulating the electron shuttling for microbial respiration (Coates et al, 1998;Lovley et al, 1996) and hydrophobicity.…”

Meteorological aspects of mud bank formation along south west coast of India

“…Balachandran (2004) proposed a new hypothesis of a subterranean flow, which is believed to be coupled with activated trending faults and originate from the adjacent watershed separated from the sea by a narrow strip of land where submerged porous lime shell beds are present, could be a possible mechanism to initiate the mud banks. Tatavarti and Narayana (2006) conducted exclusive field experiments in the mud bank regions during monsoon and non-monsoon seasons to understand their dynamics and concluded that the prevailing local meteorological conditions are also important in their formation. Later, Dinesh and Jayaprakash (2008) noticed that the presence of mineral zaherite in the required proportion, mud deposit and strong monsoon waves combined with suitable bathymetry are prerequisites for the formation of mud bank.…”