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Textural characteristics of Calangute Beach sediments, Goa Coast (India)

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Title Textural characteristics of Calangute Beach sediments, Goa Coast (India)
 
Creator Veerayya, M.
 
Description 28-44
Sediments of Calangute Beach (between Baga and Aguada Headlands), collected along 5 sections during September 1969-August 1970, have been investigated for their textural characteristics, viz. mean grain size, sorting and skewness along with the beach topographic changes. The study indicates a distinct seasonal variation in these parameters at all the profile sections and the results of student's t test reveal that the variations are highly significant. During the fair weather season, the sediments are in medium to fine sand grade and are moderate to well sorted, with negative to very negatively skewed class, whereas during the monsoon season they are in coarse to medium sand grade (often very coarse sands) in moderate to well sorted and symmetrically skewed class. In general, the sediments of the beach are represented by granule to fine sand size classes. The mean size and sorting values of the sediments tend to increase from the upper to lower foreshore, the increase generally being proportional to the gradient of the beach. The coarsest grain size is encountered at the 'step formation' during the monsoon. The berm is composed of material coarser than the foreshore represented by medium sands during the fair weather season. The breaker zone is composed of medium to fine sands, in moderate to poorly sorted class throughout the study period. The tests of significance for differences in the textural parameters between the stations during the fair weather season indicate that the sediments on the southern side (near Candolim) are coarser and less well sorted than at the other stations on the northern side. The sediments at the northernmost part i.e. Baga, are finer and very well sorted in nature. However, the variations in textural parameters of the sediments noticed during the fair weather season are absent during the monsoon. These variations have been discussed in relation to the topographic changes, wave climate and the littoral drift.
 
Date 2017-01-03T09:15:07Z
2017-01-03T09:15:07Z
1972-06
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/39581
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.01(1) [June 1972]