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Beach Profile Studies near an Artificial Open-Coast Port along South Orissa, East Coast of India
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Beach Profile Studies near an Artificial Open-Coast Port along South Orissa, East Coast of India
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Journal Article
Beach Profile Studies near an Artificial Open-Coast Port along South Orissa, East Coast of India
2001
Overview
The beaches near Gopalpur (19°18'N; 84°58'E) along the east coast of India were relatively undisturbed environments until 1987. An open-coast port was constructed by excavating the basin of the backshore and a number of development activities are now in various stages of progress. In view of the dearth of beach dynamics information for the area, the wave and breaker characteristics, sediment budget and beach profiles were studied along an 11 km stretch on both sides of the port. The wave climate is influenced by two contrasting monsoon wind regimes - a high energy southwest (SW) monsoon (April-September) and a comparatively low energy northeast (NE) monsoon (November-February). High breakers (Hb= 3m) with low period (T∞ = 8-9 sec) and low breakers (Hb = 0.5-1.0 m) with long period (15-17 sec) are observed during SW and NE monsoons respectively. Tidal range seldom exceeds 2m. Monthly beach changes revealed that during the SW monsoon the entire coast is affected by heavy erosion and the coastline recedes by about 30-40 m. From October onwards, intermittent erosion/deposition took place; however, deposition was the overriding features. The net littoral drift is 0.59 × 10 ⁶m³ and towards north. The results lead to the conclusion that these beaches were essentially accretion environments and they were not under threat of erosion as elsewhere in other localities of India.
Publisher
Coastal Education & Research Foundation (CERF)
Subject
