Coastal zones can be considered inherently vulnerable because of sensitive ecosystems, geomorphol... more Coastal zones can be considered inherently vulnerable because of sensitive ecosystems, geomorphological dynamics and complexity, and the clustering of many social, economic, and sometimes conflicting activities. In urban areas where tourism is highly treasured, this vulnerability is even worse. Intense demographic pressure may overload the carrying capacity limits of the sensitive coastal ecosystems. This process also exposes the population living in risky areas to physical vulnerability. This paper aims to present a methodology to integrate the physical, socioeconomic and ecosystem dimensions of coastal vulnerability through a useful tool for coastal zone management. It is propose a matrix that allows correlating the exposition degree and adaptive capacity of vulnerability. Based on this matrix it is possible to plot the integrated coastal vulnerability into a diagram of integrated coastal vulnerability assessment (DICVA). The case study of Região dos Lagos presented in this paper uses this integrated approach of coastal vulnerability. Between 2000 and 2010, the urban population grew significantly on the coast subject to erosion and tidal flood, as well as in flood-prone areas around the lagoons. In many cities, a massive influx of tourists surpasses the number of urban residents causing a deficiency in the water and sewage utilities systems. A resulting problem is the risk of groundwater contamination and lagoons pollution. These impacts can backfire and negatively impact the tourism industry as the environmental quality declines and the risk sensation increases. The proposed, integrated, and updated approach to coastal vulnerability may help to understand the complex effects of the relationship found in the different dimensions involved. Furthermore, this approach contributes to the effective use of the matrix and Diagram of Integrated Coastal Vulnerability Assessment, and may guide coastal management actions.
The Educational Institutions around the world have realized the possibility of using GIS in Geosc... more The Educational Institutions around the world have realized the possibility of using GIS in Geosciences teaching along with in many other subjects. GIS is been used in a large number of geoscience applications viz. mapping, mineral and petroleum exploration, structural analyses, hazards management and so on among other many applications. Mapping as an integral activity in any geoscience research, GIS with its map making and analytical capabilities plays an important role in Geoscience teaching. The present paper while discusses the role of GIS in Geoscience education, also portray the ease of using ArcGIS for Geomorphometric study for understanding the Geology and Geomorphology of small watershed basins specific to Goa, India. Introduction The recent developments in the world economy have had major influence on the trends in education in general and geosciences education in particular. India’s growing demand in better utilization of Landuse and natural resources requires the reliabl...
KlJNTE. P.D., 19~)5. On some aspects of barrier islands of the west coast, India. Journal of Coas... more KlJNTE. P.D., 19~)5. On some aspects of barrier islands of the west coast, India. Journal of Coastal Research, 11(2), 50H f)15. Fort Lauderdale (Florida). ISSN 0749020H. Three barrier island systems, namely, Maniyet barrier island system, Vvpin-Cochin barrier island system, and Alleppey barrier island system situated along the west COW'It. of India are located, mapped and studied using remote sensing data, topographic maps, and naval hydrographic charts. Efforts are made to gather geomorphic evidences which are helpful in understanding possible stages of formation of barrier islands. Based on transgressional and regressional nat ure of t he coast, physiography of barrier islands, and the shoreline changes, it has been concluded that the evolution of the barrier islands has taken place in three prominent stages: (I) Init.ial emergence of the land during which paleo beach ridges were formed, (regressional phase), (2) subsequent. submergence of the land, which is characterized by engulfment of beach ridges (t.ransgressiunal phase), and (;~) emergence of t.he coast during which breaching (regression phase) of ridges and harrier island formation took place.
Page 1. Journal of Coastal Research 9 3 811-822 Fort Lauderdale, Florida Summer 1993 Determinatio... more Page 1. Journal of Coastal Research 9 3 811-822 Fort Lauderdale, Florida Summer 1993 Determination of Net Shore Drift Direction of Central West Coast of India Using Remotely Sensed Data Pravin D. Kunte and BG Wagle ...
GOA, endowed with natural & scenic beauty, is famous for its silvery sand & golden coastline. In ... more GOA, endowed with natural & scenic beauty, is famous for its silvery sand & golden coastline. In the recent years, a lot of changes (both natural & man-made) have occurred rapidly which have direct impact on the human environment. These changes in the nature have to be delineated for better understanding and for taking the necessary mitigate or remedial measures. Further, the management of natural resources has become a complex task as more & more socio-economic activities such as urban development, agriculture, waste disposal, nature conservation, shipping, harbor development, fisheries etc., are taking place. Present paper discusses the geomorphology of coastal features as observed and maps the land use changes that have occurred during the period from January 1999 and March 2001 due to rapid pace of urbanization, detected on the basis of field observation and with the use of IRS-1C Satellite Imageries using RS & GIS methodologies. In all, about fourteen (14) coastal features have...
Three barrier island systems, namely, Maniyet barrier island system, Vypin-Cochin barrier island ... more Three barrier island systems, namely, Maniyet barrier island system, Vypin-Cochin barrier island system, and Alleppey barrier island system situated along the west coast of India are located, mapped and studied using remote sensing data, topographic maps, and naval hydrographic charts. Efforts are made to gather geomorphic evidences which are helpful in understanding possible stages of formation of barrier islands. Based on transgressional and regressional nature of the coast, physiography of barrier islands, and the shoreline changes, it has been concluded that the evolution of the barrier islands has taken place in three prominent stages: (1) Initial emergence of the land during which paleo beach ridges were formed,(regressional phase), (2) subsequent submergence of the land, which is characterized by engulfment of beach ridges (transgressional phase), and (3) emergence of the coast during which breaching (regression phase) of ridges and harrier island formation took place.
GOA, endowed with natural & scenic beauty, is famous for its silvery sand & golden coastline. In ... more GOA, endowed with natural & scenic beauty, is famous for its silvery sand & golden coastline. In the recent years, a lot of changes (both natural & man-made) have occurred rapidly which have direct impact on the human environment. These changes in the nature have to be delineated for better understanding and for taking the necessary mitigate or remedial measures. Further, the management of natural resources has become a complex task as more & more socio-economic activities such as urban development, agriculture, waste disposal, nature conservation, shipping, harbor development, fisheries etc., are taking place. Present paper discusses the geomorphology of coastal features as observed and maps the land use changes that have occurred during the period from January 1999 and March 2001 due to rapid pace of urbanization, detected on the basis of field observation and with the use of IRS-1C Satellite Imageries using RS & GIS methodologies. In all, about fourteen (14) coastal features have...
A 3D hydrodynamic model 'COSMOS' is applied to the Gulf of Kachchh to predict tidal variation, oc... more A 3D hydrodynamic model 'COSMOS' is applied to the Gulf of Kachchh to predict tidal variation, ocean currents, residual tidal current, sea surface temperature distribution etc. The model is based on the hydrostatic and Boussinesq approximations and uses a vertical double sigma coordinate with a step-like grid. In addition to the momentum and continuity equations, the model solves two-transport equations for salinity and temperature and an equation of state to include the baroclinic effects. The other objectives are to quantitatively assess suspended sediments by digitally analyzing SeaWiFS data using SeaDAS software and to monitor suspended sediment movement by image processing of ocean color monitor data and finally establish relations between residual tidal currents and sediment transport. The Gulf of the Kachcha (GoK) lies approximately between latitudes 22 0 to 23 0 N and between longitudes 69 0 00'E to 70 0 45' E. The GoK presents a complex macro-tidal region. The model is set up for the GoK, and is validated using remotely sensed data. Sea surface temperature, Salinity, river input, meteorological parameters and five components of tide are utilized in COSMOS model. Five boundary conditions, such as land-ocean boundary, air-sea boundary, sea bottom friction boundary, discharge from river boundary and Gulf-open ocean (open) boundary are defined and used. Programs constituting the COSMOS model were executed along with initial input cards to simulate the model using an Alpher mini-computer system at the CEReS, for November and December months of 1999. While modeling, the water column is divided into five layers and at each layer the distribution of current velocity and direction, pressure water temperature, salinity and turbulent energy were computed. Comparing the simulated results with the measured data available for those locations has validated the model.
The ever-increasing urbanization along the coasts resulting destructive pressures on the Marine a... more The ever-increasing urbanization along the coasts resulting destructive pressures on the Marine and coastal regions. Developing area/region specific SDI's, using developments in remote sensing and geospatial technologies, will surely add strength to the National and Global SDIs. The main aim of this study to understand the topographic features which is the most important part of terrain analysis and for that develop the application of the available Geospatial Tools for the creation of datasets, which are building blocks of any SDI. The surface analysis of South Western part of India and Benthic Terrain Analysis of Eastern Arabian Sea is carried out using the NASA Shuttle Radar Topographic Mission (SRTM) data and Geospatial tools to understand the terrain characteristics. The terrain analysis of southern Maharashtra and Goa region is validated using ASTER 3D remote sensing data. The geospatial study is carried out to generate base-level information for terrain analysis and classification. Using improved e-topo2 bathymetry data and Benthic Terrain Modeller (BTM) extension of Arc GIS version 10.2, bathymetry position Index (BPI) at different resolution/scale (broad, fine and standard scale) is achieved for preparing slope, depth, and rugosity maps. Based on bathymetry derivative maps, benthic terrain map of the Eastern Arabian Sea are generated and are used to classify benthic environment of the Ocean. The study demonstrates that Geospatial technique as most efficient, cost-effective and easiest tools for surface/benthic terrain analysis and mapping provides most of the data for the development of SDIs for Coastal and marine regions.
Abstract: The littoral-drift regime along the north-eastern coast of India was investigated by an... more Abstract: The littoral-drift regime along the north-eastern coast of India was investigated by analyzing coastal drift indicators and shoreline changes based on multi-temporal satellite images. The study of offshore turbidity patterns and quantitative estimation of suspended sediments was undertaken to understand the magnitude and direction of movement of sediment fluxes. The study revealed that: 1) the character of coastal landforms and sedimentation processes indicate that the sediment transport is bi-directional and monsoon dependant 2) multi-date, multi-temporal analysis of satellite images helps to show the nature of sediment transport along the coast. The dominant net sediment transport is in a NE direction along the eastern coast of India. Finally, this assessment demonstrates the potential of remote sensing technology in understanding the coastal morphometric changes, long term sediment transport, shoreline changes and offshore turbidity distribution pattern and the implicat...
Although, a variety of methods have been employed to determine sediment transport along Goa coast... more Although, a variety of methods have been employed to determine sediment transport along Goa coast, the results differ in some sections. Fifteen studies have been reviewed, compared, re-assessed and a corrected shore drift map of the Goa coast is prepared and presented. Advantages and limitations of these methods are discussed. The present review and re-assessment confirms that, though sediment transport is bi-directional, the long-term net shore drift direction along Calangute and Colva beaches is southward. The overall net shore drift direction along Goa coast is also towards south. It is qualitatively determined that except for 3 short drift cells, shore zone has long-term stability. Finally, it is concluded that landform indicator study using remote sensing can be an effective method for determining long-term net shore drift along the coast.
Coastal zones can be considered inherently vulnerable because of sensitive ecosystems, geomorphol... more Coastal zones can be considered inherently vulnerable because of sensitive ecosystems, geomorphological dynamics and complexity, and the clustering of many social, economic, and sometimes conflicting activities. In urban areas where tourism is highly treasured, this vulnerability is even worse. Intense demographic pressure may overload the carrying capacity limits of the sensitive coastal ecosystems. This process also exposes the population living in risky areas to physical vulnerability. This paper aims to present a methodology to integrate the physical, socioeconomic and ecosystem dimensions of coastal vulnerability through a useful tool for coastal zone management. It is propose a matrix that allows correlating the exposition degree and adaptive capacity of vulnerability. Based on this matrix it is possible to plot the integrated coastal vulnerability into a diagram of integrated coastal vulnerability assessment (DICVA). The case study of Região dos Lagos presented in this paper uses this integrated approach of coastal vulnerability. Between 2000 and 2010, the urban population grew significantly on the coast subject to erosion and tidal flood, as well as in flood-prone areas around the lagoons. In many cities, a massive influx of tourists surpasses the number of urban residents causing a deficiency in the water and sewage utilities systems. A resulting problem is the risk of groundwater contamination and lagoons pollution. These impacts can backfire and negatively impact the tourism industry as the environmental quality declines and the risk sensation increases. The proposed, integrated, and updated approach to coastal vulnerability may help to understand the complex effects of the relationship found in the different dimensions involved. Furthermore, this approach contributes to the effective use of the matrix and Diagram of Integrated Coastal Vulnerability Assessment, and may guide coastal management actions.
The Educational Institutions around the world have realized the possibility of using GIS in Geosc... more The Educational Institutions around the world have realized the possibility of using GIS in Geosciences teaching along with in many other subjects. GIS is been used in a large number of geoscience applications viz. mapping, mineral and petroleum exploration, structural analyses, hazards management and so on among other many applications. Mapping as an integral activity in any geoscience research, GIS with its map making and analytical capabilities plays an important role in Geoscience teaching. The present paper while discusses the role of GIS in Geoscience education, also portray the ease of using ArcGIS for Geomorphometric study for understanding the Geology and Geomorphology of small watershed basins specific to Goa, India. Introduction The recent developments in the world economy have had major influence on the trends in education in general and geosciences education in particular. India’s growing demand in better utilization of Landuse and natural resources requires the reliabl...
KlJNTE. P.D., 19~)5. On some aspects of barrier islands of the west coast, India. Journal of Coas... more KlJNTE. P.D., 19~)5. On some aspects of barrier islands of the west coast, India. Journal of Coastal Research, 11(2), 50H f)15. Fort Lauderdale (Florida). ISSN 0749020H. Three barrier island systems, namely, Maniyet barrier island system, Vvpin-Cochin barrier island system, and Alleppey barrier island system situated along the west COW'It. of India are located, mapped and studied using remote sensing data, topographic maps, and naval hydrographic charts. Efforts are made to gather geomorphic evidences which are helpful in understanding possible stages of formation of barrier islands. Based on transgressional and regressional nat ure of t he coast, physiography of barrier islands, and the shoreline changes, it has been concluded that the evolution of the barrier islands has taken place in three prominent stages: (I) Init.ial emergence of the land during which paleo beach ridges were formed, (regressional phase), (2) subsequent. submergence of the land, which is characterized by engulfment of beach ridges (t.ransgressiunal phase), and (;~) emergence of t.he coast during which breaching (regression phase) of ridges and harrier island formation took place.
Page 1. Journal of Coastal Research 9 3 811-822 Fort Lauderdale, Florida Summer 1993 Determinatio... more Page 1. Journal of Coastal Research 9 3 811-822 Fort Lauderdale, Florida Summer 1993 Determination of Net Shore Drift Direction of Central West Coast of India Using Remotely Sensed Data Pravin D. Kunte and BG Wagle ...
GOA, endowed with natural & scenic beauty, is famous for its silvery sand & golden coastline. In ... more GOA, endowed with natural & scenic beauty, is famous for its silvery sand & golden coastline. In the recent years, a lot of changes (both natural & man-made) have occurred rapidly which have direct impact on the human environment. These changes in the nature have to be delineated for better understanding and for taking the necessary mitigate or remedial measures. Further, the management of natural resources has become a complex task as more & more socio-economic activities such as urban development, agriculture, waste disposal, nature conservation, shipping, harbor development, fisheries etc., are taking place. Present paper discusses the geomorphology of coastal features as observed and maps the land use changes that have occurred during the period from January 1999 and March 2001 due to rapid pace of urbanization, detected on the basis of field observation and with the use of IRS-1C Satellite Imageries using RS & GIS methodologies. In all, about fourteen (14) coastal features have...
Three barrier island systems, namely, Maniyet barrier island system, Vypin-Cochin barrier island ... more Three barrier island systems, namely, Maniyet barrier island system, Vypin-Cochin barrier island system, and Alleppey barrier island system situated along the west coast of India are located, mapped and studied using remote sensing data, topographic maps, and naval hydrographic charts. Efforts are made to gather geomorphic evidences which are helpful in understanding possible stages of formation of barrier islands. Based on transgressional and regressional nature of the coast, physiography of barrier islands, and the shoreline changes, it has been concluded that the evolution of the barrier islands has taken place in three prominent stages: (1) Initial emergence of the land during which paleo beach ridges were formed,(regressional phase), (2) subsequent submergence of the land, which is characterized by engulfment of beach ridges (transgressional phase), and (3) emergence of the coast during which breaching (regression phase) of ridges and harrier island formation took place.
GOA, endowed with natural & scenic beauty, is famous for its silvery sand & golden coastline. In ... more GOA, endowed with natural & scenic beauty, is famous for its silvery sand & golden coastline. In the recent years, a lot of changes (both natural & man-made) have occurred rapidly which have direct impact on the human environment. These changes in the nature have to be delineated for better understanding and for taking the necessary mitigate or remedial measures. Further, the management of natural resources has become a complex task as more & more socio-economic activities such as urban development, agriculture, waste disposal, nature conservation, shipping, harbor development, fisheries etc., are taking place. Present paper discusses the geomorphology of coastal features as observed and maps the land use changes that have occurred during the period from January 1999 and March 2001 due to rapid pace of urbanization, detected on the basis of field observation and with the use of IRS-1C Satellite Imageries using RS & GIS methodologies. In all, about fourteen (14) coastal features have...
A 3D hydrodynamic model 'COSMOS' is applied to the Gulf of Kachchh to predict tidal variation, oc... more A 3D hydrodynamic model 'COSMOS' is applied to the Gulf of Kachchh to predict tidal variation, ocean currents, residual tidal current, sea surface temperature distribution etc. The model is based on the hydrostatic and Boussinesq approximations and uses a vertical double sigma coordinate with a step-like grid. In addition to the momentum and continuity equations, the model solves two-transport equations for salinity and temperature and an equation of state to include the baroclinic effects. The other objectives are to quantitatively assess suspended sediments by digitally analyzing SeaWiFS data using SeaDAS software and to monitor suspended sediment movement by image processing of ocean color monitor data and finally establish relations between residual tidal currents and sediment transport. The Gulf of the Kachcha (GoK) lies approximately between latitudes 22 0 to 23 0 N and between longitudes 69 0 00'E to 70 0 45' E. The GoK presents a complex macro-tidal region. The model is set up for the GoK, and is validated using remotely sensed data. Sea surface temperature, Salinity, river input, meteorological parameters and five components of tide are utilized in COSMOS model. Five boundary conditions, such as land-ocean boundary, air-sea boundary, sea bottom friction boundary, discharge from river boundary and Gulf-open ocean (open) boundary are defined and used. Programs constituting the COSMOS model were executed along with initial input cards to simulate the model using an Alpher mini-computer system at the CEReS, for November and December months of 1999. While modeling, the water column is divided into five layers and at each layer the distribution of current velocity and direction, pressure water temperature, salinity and turbulent energy were computed. Comparing the simulated results with the measured data available for those locations has validated the model.
The ever-increasing urbanization along the coasts resulting destructive pressures on the Marine a... more The ever-increasing urbanization along the coasts resulting destructive pressures on the Marine and coastal regions. Developing area/region specific SDI's, using developments in remote sensing and geospatial technologies, will surely add strength to the National and Global SDIs. The main aim of this study to understand the topographic features which is the most important part of terrain analysis and for that develop the application of the available Geospatial Tools for the creation of datasets, which are building blocks of any SDI. The surface analysis of South Western part of India and Benthic Terrain Analysis of Eastern Arabian Sea is carried out using the NASA Shuttle Radar Topographic Mission (SRTM) data and Geospatial tools to understand the terrain characteristics. The terrain analysis of southern Maharashtra and Goa region is validated using ASTER 3D remote sensing data. The geospatial study is carried out to generate base-level information for terrain analysis and classification. Using improved e-topo2 bathymetry data and Benthic Terrain Modeller (BTM) extension of Arc GIS version 10.2, bathymetry position Index (BPI) at different resolution/scale (broad, fine and standard scale) is achieved for preparing slope, depth, and rugosity maps. Based on bathymetry derivative maps, benthic terrain map of the Eastern Arabian Sea are generated and are used to classify benthic environment of the Ocean. The study demonstrates that Geospatial technique as most efficient, cost-effective and easiest tools for surface/benthic terrain analysis and mapping provides most of the data for the development of SDIs for Coastal and marine regions.
Abstract: The littoral-drift regime along the north-eastern coast of India was investigated by an... more Abstract: The littoral-drift regime along the north-eastern coast of India was investigated by analyzing coastal drift indicators and shoreline changes based on multi-temporal satellite images. The study of offshore turbidity patterns and quantitative estimation of suspended sediments was undertaken to understand the magnitude and direction of movement of sediment fluxes. The study revealed that: 1) the character of coastal landforms and sedimentation processes indicate that the sediment transport is bi-directional and monsoon dependant 2) multi-date, multi-temporal analysis of satellite images helps to show the nature of sediment transport along the coast. The dominant net sediment transport is in a NE direction along the eastern coast of India. Finally, this assessment demonstrates the potential of remote sensing technology in understanding the coastal morphometric changes, long term sediment transport, shoreline changes and offshore turbidity distribution pattern and the implicat...
Although, a variety of methods have been employed to determine sediment transport along Goa coast... more Although, a variety of methods have been employed to determine sediment transport along Goa coast, the results differ in some sections. Fifteen studies have been reviewed, compared, re-assessed and a corrected shore drift map of the Goa coast is prepared and presented. Advantages and limitations of these methods are discussed. The present review and re-assessment confirms that, though sediment transport is bi-directional, the long-term net shore drift direction along Calangute and Colva beaches is southward. The overall net shore drift direction along Goa coast is also towards south. It is qualitatively determined that except for 3 short drift cells, shore zone has long-term stability. Finally, it is concluded that landform indicator study using remote sensing can be an effective method for determining long-term net shore drift along the coast.
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