• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/jess/130/0157

    • Keywords

       

      Super cyclone Amphan; Chl-a; SST; POC; Bay of Bengal; MODIS.

    • Abstract

       

      This study aims to explore the variation of Chlorophyll-a(Chl-a), particulate organic carbon (POC) and sea surface temperature (SST) before (pre-cyclone) and after (post-cyclone) the cyclone Amphan in the Bay of Bengal (BoB). Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua satellite level-3 data were used to assess the variability of the mentioned parameters. Chl-a concentration was observed to be significantly (t = −3.16, df $\approx$ 18.03, p = 0.005) high (peak 2.30 mg/m$^{3}$) during the post-cyclone period compared to the pre-cyclone (0.19 mg/m$^{3}$). Similarly, POC concentration was significantly (t = 3.41, df $\approx$ 18.06, p = 0.003) high (peak 464 mg/m$^{3}$) during the post-cyclone compared to the pre-cyclone (59.40 mg/m$^{3}$). Comparatively, high SST was observed during the pre-cyclone period and decreases drastically with a significant difference (t = 14, df = 33, p = 1.951e-15) after the post-cyclone period. The results indicated an increase in Chl-a (502%) and POC (240%) with a positive anomaly of 0.55 and 94.11 mg/m$^{3}$, but a decrease in SST (8.52%) with a negative anomaly of 2.7$^{\circ}$C in the BoB.

    • Author Affiliations

       

      MD RONY GOLDER1 MD SHAHIN HOSSAIN SHUVA2 MUHAMMAD ABDUR ROUF1 MOHAMMAD MUSLEM UDDIN2 SAYEDA KAMRUNNAHAR BRISTY3 JOYANTA BIR1

      1. Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna 9208, Bangladesh.
      2. Department of Oceanography, University of Chittagong, Chittagong 4331, Bangladesh.
      3. Development Studies Discipline, Khulna University, Khulna 9208, Bangladesh.
    • Dates

       
  • Journal of Earth System Science | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.