Reconstruction of sedimentation rates based on the chronological framework of Lake Pykara, Tamil Nadu, India

This work presents a piece of initial information about the estimation sedimentation rate for Lake Pykara. In this investigation, chronological sequence sediment core was set up dependent on 137Cs and 210Pbex analysis to study accumulation rates in Caesium-137 (Cs) is an artificial radionuclide regularly utilized building chronology lake sediments Anthropocene period. The unsupported 210Pb profile shows non-exponential decline activity with depth. Sedimentation global atmospheric nuclear weapon maximum fallout (1963) bolster utilization consistent supply (CRS) model sediments. geochronology studies were performed using method, evaluate time changes sediment. radioactivity resolved directly by gamma spectrometry fluctuated from 13.11 ± 1.3 Bq kg−1 top layers 1.21 0.1 bottom core. Two trademark peaks identified fallouts after atomic weapons testing Chernobyl mishap observed used affirm dating method. Radioactivity ranged 8.00 1.0 1.40 kg−1. mean evaluated both models 0.71 0.06 cm year−1, while estimated age Pykara 514.08 years (137Cs) 521.43 (210Pbex), respectively.