East Coast Of Tamil Nadu Research Articles

Coastal Response to Changes in Sea Level Since the Last 4500 BP On the East Coast of Tamil Nadu, India

Geomorphology, clay mineral composition, and radiocarbon dates from Muttukadu to Marakkanam estuaries and the tidal zone along the east coast of Tamil Nadu, India, have been used to reconstruct coastal evolution between approximately 4500 and 1100 B P. Formation of alternate oyster beds with intervening tidal clay units indicate fluctuation in the sea level may be a consequence of changes in the Mid-Holocene sedimentation pattern and coastal configuration. 14C dates from Muttukadu indicate a rapid relative sea-level rise (RSL) subsequent to 3500 BP and tidal flat sedimentation between 3475 and 3145 BP. Marine conditions along the east coast area returned around 1900 B P. Comparison of dates with other sites, e.g. Muttukadu, Mammallapuram, and Marakkanam, points toward short removal of marine conditions, ample sediment supplies in the tidal zones, and neotectonic activity. Reactivation of the north–south trending fault line occurred not earlier than approximately 1050 B P. Our study indicates that Middle to Late Holocene coastal sedimentation and the chronology of the tidal zone formation have been strongly influenced by local factors. These have provided considerable scope for internal reorganization with changing coastal processes.

Lake environments along the coast of Tamilnadu, India, delineated by IRS‐IA satellite data

AbstractIndian Remote Sensing Satellite (IRS‐IA) LISS I and LISS II data were studied to delineate major lake environments along the east coast of Tamilnadu, India. IRS‐IA satellite data were useful in delineating the spatial extent of lacustrine water‐bodies, their probable origin and regional setting, and their influence on the local environment. A few water‐bodies (i.e. Pulicat, Kalveli and lakes along the Vedaranniyam coast) were selected for particular study. They are the result of marine transgression during the late Cretaceous, and form an integral part of neotectonic and land‐building activities of the area. This study explains the relationship between lakes and coastline configuration, and is significant in understanding the lake environment and its subsequent role in coastal zone management

Suitable Season for the Collection of Seed Coconuts in the East Coast of Tamil Nadu

A study on periods of collection of seed coconuts and storage requirements prior to planting in the nursery under East Coast conditions revealed that (1) the seed coco- nuts can be collected from February to August; (2) the seed coconuts should be sterad in sand under shade for one or two months to get high percentage of germination and quality seedlings and also to reduce the cost of cultivation by minimising the irrigations for one or two months during storage; (3) the seednuts harvested during June, July and August can be planted with or without storage as there is not much difference in ger- mination percentage and out-turn of quality seedlings; (4) the planting of seednuts should be completed before the middle of October to get the benefit of North East monsoon and (5) the seednuts harvested in the month of June and July produce more percentage of quality seedlings.