Loads for use in the design of ships and offshore structures

Sulphate attack and ettringite formation in the lime and cement stabilized marine clays

Efficiency investigation on energy harvesting from airflows in HVAC system based on galloping of isosceles triangle sectioned bluff bodies

In August 2005, a team surveyed the effects of the December 2004 Indian Ocean tsunami on the southern coast of Oman. Runup and inundation were obtained at 41 sites, extending over a total of 750 km of shoreline. Measured runup ranged from 3.25 m in the vicinity of Salalah to a negligible value at one location on Masirah Island. In general, the largest values were found in the western part of the surveyed area. Significant incidents were documented in the port of Salalah, where a 285-m-long vessel broke its moorings and drifted inside and outside the port, and another ship struck the breakwater while attempting to enter the harbor. The general hazard to Oman from tsunamis may be greatest from the neighboring Makran subduction zone in western Pakistan.

Sri Lanka Field Survey after the December 2004 Indian Ocean Tsunami

Gabion-based coastal structures are being adopted frequently in recent times due to its energy dissipation characteristics and reduction in construction time. The coastal defense has become an essential aspect for maritime facilities and for the places prone to erosion. Reef breakwaters (also called Low crested structures) are seen to cause less environmental impact which makes them popular in recent past. The present investigation involves the study of hydrodynamic stability aspects of gabion-based reef breakwaters. Though these coastal protection structures are meant for wave attenuation, a study on the stability aspects of the structure to resist wave action is essential. This knowledge on the hydrodynamic stability is essential to come out with the design basis for construction of such coastal structures in a wave environment. This investigation on gabion-based reef breakwaters is performed using physical model tests with varying wave parameters and reef geometries. The study is aimed at fetching knowledge on the determination the weight of the gabions to resist the wave action by obtaining a relation between the weight of the gabion, geometrical parameters and to that of the wave parameters. This determination of the weight of the gabions to resist wave action is essential if gabion-based structures are deployed as low crested coastal structures or reef breakwaters. This paper is based on the experimental study conducted in the shallow water wave flume facility in the Department of Ocean Engineering, IIT Madras.

K. Murali

Papers

Hydrodynamic Stability of Gabion Box Reef Breakwaters

Historical Shoreline Analysis and Field Monitoring at Ennore Coastal Stretch along the Southeast Coast of India

Investigations into salt wedge dynamics at a bar blocked estuary using front tracking approach

Hydrodynamic pressures over modular porous reef breakwaters

Wave Runup on a Concentric Perforated Circular Cylinder System