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Textural characteristics of shelf surface sediments of southeast coast of India

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Title Textural characteristics of shelf surface sediments of southeast coast of India
 
Creator Manokaran, S
Mishra, P
Khan, S Ajmal
Lyla, P S
Ansari, KGMT
Raja, S
 
Subject Sediment texture
River inflow
Continental shelf
Bay of Bengal
 
Description 967-976
Present study consists analyses of surface sediment
samples collected from the continental shelf region at depths of

30 m, 50 m, 75 m, 100 m, 150 m and 200 m . Six types of
sediment textures were found (coarse sand, medium sand, fine sand, coarse silt,
medium silt and fine slit). Particle diameter decreased with increasing depth.
The phi mean ranged between 0.466φ (coarse
sand - Tammenapatanam 75 m) and 7.8306φ (fine silt -Singarayakonda 75 m). Flow from Krishna river was found to influence the particle
diameter of sediment in Singarayakonda where the sediment was silty from 50 m
depth onwards whereas in the other transects where the river flow was
comparatively low, the sediment was silty only at 200 m depth. Silty sediments
were found very well sorted. Negative skweness values observed in the middle
depths indicated the transition zones. Sediments with leptokurtic distribution
indicate deposits with a high degree of textural maturity and reworking. The
first percentile and median of size distribution pattern reflects suspension
and rolling mode of transportational history, indicating the complexity in the
hydrodynamic processes operating in the study area.
 
Date 2016-06-23T16:30:47Z
2016-06-23T16:30:47Z
2014-06
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/28967
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.43(6) [June 2014]