The Intrinsic Relationship Among Coaxial and Non-Coaxial Strain, Bowen’s Series of Minerals and Textural Maturity of Sediments in Lowlands

Lowland denotes regions of low elevation, which arevulnerable to environmental changes and global warming. In thispaper an attempt is made to link the qualitative concepts ofBowen’s series of minerals and the quantitative concepts ofgeotechnical engineering methods, intrinsically related to thevarious stages of maturity levels of sediments. In the everchanging environment the need to understand the interdisciplinaryaspects of common research topics is on the increaseconsidering the environmental problems at global level inlowlands

The Association and Dissociation Tendencies of the Coaxial and Non- Coaxial Components of Shear Strength of Soils to Environment

Soil is rock on its way to ocean. It undergoes many changes during the travel. The important factors which influence the geo-technical behavior of soil are : Grain size and Shape, Gradation, Water, Parent rock materials and Environment. The Geo-technical behavior of fine grains in soil is highly complex than coarse grains. A pure cohesive soil has pure shear or coaxial shear component only. A pure friction soil has Non-coaxial or simple shear component only. Normally a soil sample is a mixture of coarse and fine grains. The shear strength is shared between coaxial and non-coaxial component of the total shear strength of soil. The environment influences the Geo-technical behavior of soil. The coaxial and non-coaxial components of shear strength (coax and non-coax) of soil accepts and adjusts to reach a new equilibrium in stability. In this paper the association and dissociation of coax and non-coax with environmental conditions starting from laboratory and ending in marine environment through examples, illustrations and documented, reliable data available in literature

INTEGRATED ENVIRONMENTAL MANAGEMENT FOR SUSTAINED DEVELOPMENT

ABSTRACT: Lowland problems are many. Many urban settlements are on the coastal belt, worldwide. In the past, many urban areas grew in an uncontrolled manner. The urban populations experienced increased risks, a poorer quality of life, and health problems. However, in general, there has been increasing management of many urban environments through Land use planning, building, environmental, health and safety regulations and management of emergencies, collectively balancing social, economic and environmental requirements. In this paper the complexities of urban cities are illustrated through many examples without naming any particular city. Since in modern times, globalization has created an environment where economic borders only exist. The systems are usually administered by separate authorities, which need to act together to secure sustainable urban management. Therefore actions and responses are frequently disconnected and are sometimes conflicting. To attain sustainable growth common sources of information are necessary. To emphasize the following eleven illustrative examples of some urban cities and their issues are discussed

Modelling Coastal Sediment Transport for Harbour Planning

405-413Present study provides a detailed account on the performance and limitations of Cuddalore port breakwaters based on an analysis made on the sediment pattern in breakwaters area of Cuddalore port using MIKE21 modelling software. Possible solutions for the problem are also demonstrated

Estimation of longshore sediment transport along Puducherry coast, Eastcoast of India; based on empirical methods and surf zone model

1307-1319Measured waves at 15 m water depth off Puducherry coast were used to estimate the longshore sediment transport along the Puducherry coast based on empirical methods and surf zone model. Comparison of longshore sediment showed that transport rate estimates gave wide variation among the empirical methods and surf zone model. Transport rate estimates using CERC gave higher (factor 2.5) and Kamphuis gave factor 1.5 when compared to VanRijn transport estimates. Estimated littoral drift using surf zone model was close agreement with estimated littoral drift using VanRijn method. Estimated annual longshore sediment transport based on surf zone model along the Puducherry coast show that the highest northerly transport occurred in the month of May, followed by September, July, June and August. Highest southerly transport was observed in December followed by November. Net monthly transport was northerly from March to October and southerly during the remaining months. Transport rate was found to be low in February. Volume of annual gross transport was estimated as 0.40 x 106 m3/year and the volume of annual net transport was 0.13 x 106 m3/year (towards north)