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Kiran, Rayaprolu
- Can Hydrocarbons in Coastal Sediments be Related to Terrestrial Flux? A Case Study of Godavari River Discharge (Bay of Bengal)
Abstract Views :260 |
PDF Views:92
Authors
Rayaprolu Kiran
1,
V. V. J. Gopala Krishna
1,
B. G. Naik
1,
G. Mahalakshmi
2,
R. Rengarajan
3,
Aninda Mazumdar
2,
Nittala S. Sarma
1
Affiliations
1 Marine Chemistry Laboratory, Andhra University, Visakhapatnam 530 003, IN
2 National Institute of Oceanography, Dona Paula, Goa 403 004, IN
3 Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, IN
1 Marine Chemistry Laboratory, Andhra University, Visakhapatnam 530 003, IN
2 National Institute of Oceanography, Dona Paula, Goa 403 004, IN
3 Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, IN
Source
Current Science, Vol 108, No 1 (2015), Pagination: 96-100Abstract
A sediment core aged ~250 years and deposition rate of ~2.4 mm yr-1 raised from the coastal region receiving inputs from the Godavari river was examined for n-alkanes. The carbon preference index (CPI) of shortchain hydrocarbons (SHC) indicated intense bacterial activity. The long-chain hydrocarbons (LHC) were major and their CPI (CPILHC) indicated that the terrestrial source was more dominant compared to the in situ input. CPILHC is significantly linearly correlated and appears to be a proxy for the historical discharge of the river.Keywords
Carbon Preference Index, Coastal Sediments, Hydrocarbons, Terrestrial Flux.Full Text
- Spectral Modelling of Estuarine Coloured Dissolved Organic Matter
Abstract Views :286 |
PDF Views:78
Authors
Nittala S. Sarma
1,
Sudarsana Rao Pandi
1,
N. V. H. K. Chari
1,
Gundala Chiranjeevulu
1,
Rayaprolu Kiran
1,
K. Shiva Krishna
1,
D. Bhaskara Rao
1,
P. Venkatesh
1,
B. Charan Kumar
2,
A. V. Raman
2
Affiliations
1 Marine Chemistry Laboratory, Andhra University, Visakhapatnam 530 003, IN
2 Marine Biological Laboratory, Andhra University, Visakhapatnam 530 003, IN
1 Marine Chemistry Laboratory, Andhra University, Visakhapatnam 530 003, IN
2 Marine Biological Laboratory, Andhra University, Visakhapatnam 530 003, IN
Source
Current Science, Vol 114, No 08 (2018), Pagination: 1762-1767Abstract
Measuring coloured dissolved organic matter (CDOM) holds advantage over dissolved organic carbon (DOC) determination, as it can be remotely estimated unlike the latter, for which it can potentially act as a proxy. The CDOM absorbance, by definition, falls exponentially with wavelength of light (λ) in the ultravioletvisible region. Investigating over 800 absorption spectra of water samples from the tropical monsoonal Godavari estuary and the Chilika brackish water lagoon, we found that the spectral slope (S) of the 330–440 nm region (S330–440) is best suited to retrieve CDOM and its exponential character.Keywords
CDOM, Chilika Lagoon, Godavari Estuary, Spectral Slope, S330–440, UV-Visible Absorbance.Full Text
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