R.Kannan r | Anna University (original) (raw)

Papers by R.Kannan r

Research paper thumbnail of Assessment of Groundwater Quality Index, Suitability for Irrigation and Domestic Purposes in Krishna-Godavari Delta Region, Southern India

Journal of Environmental Treatment Techniques, 2021

The water quality index (WQI) is a significant indicator for evaluating the quality of drinking w... more The water quality index (WQI) is a significant indicator for evaluating the quality of drinking water for end-users. The present work is aimed to assess the groundwater quality of the Krishna Godavari delta region in Andhra Pradesh State, for knowing its suitability for domestic, irrigation, and drinking purposes by calculating the WQI parameters and comparing it with WHO and Indian Standards. A total of 105 groundwater samples each for both Pre-monsoon and Post-monsoon periods have been collected during June 2017 and January 2018. The following 11 parameters were taken into account when calculating the WQI: pH, Electrical Conductivity (EC), Total Hardness (TH), Calcium (Ca2+), Magnesium (mg2+), Bicarbonate, Chloride(Cl-), Nitrate (Na+), Sulphate, Potassium (K+), and Total Dissolved Solids (TDS). Based on the WQI result, the samples were divided into five categories: Excellent, Good, Poor, Very Poor, and unfit for drinking purposes. In Pre-monsoon and Post monsoon season, the water quality index is 9%, 25%, 30%, 22%, 15% respectively 16%, 41%, 31%, 7%, and 5%. It can be concluded that during pre-monsoon and post-monsoon season 67% and 43% of water is not suitable for drinking purposes respectively and hence they require treatment before usage.

Research paper thumbnail of Hydrogeochemistry and Groundwater Quality Assessment of Lower Part of the Ponnaiyar River Basin, Cuddalore District, South India

Environmental Monitoring and Assessment, 2007

Research paper thumbnail of Shoreline Change Monitoring in Nellore Coast at East Coast Andhra Pradesh District using Remote Sensing and GIS

The shoreline is one of the most important features on earth's surface. They are highly dynamic a... more The shoreline is one of the most important features on earth's surface. They are highly dynamic and ever changing. Changes are over time scales including minutes, hours, decades and Centuries. Spatial scales vary from local to regional to worldwide. Although change is continuously occurring, it doesn't occur in a constant manner. Many factors influence these changes including the type of shoreline (rocky, sandy), wave activity, tidal variations, storms and human impacts. The shoreline change study is necessary for updating the shoreline change maps and management of natural resources. Shorelines are the key element in coastal GIS and provide the most information on coastal landform dynamics. The frequently monitoring coast only to accesses variation of shoreline changes. In this paper investigate the shoreline changes of Nellore district in Andhra Pradesh coast, as well as find the quantity of the erosion and accretion rate. Using multi-temporal resolution satellite data (TM & LISS III, IV) and Geographic information system (GIS) for past 25 years' period i.e. from 1989 to 2015. Nellore having length of coast line is 167km for this study used. The resultant coastal maps were used to estimate the geomorphologic changes and shifting of the shoreline position. This integrated study is found useful for exploring accretion and erosion processes in the region. About 87.6km of coastline was found to be accreting nature with average of +1.40m/yr followed by 38.4km of coastal line eroding with average of-1.36m/yr and stable coastline of 41.4km was found. This study demonstrates that combined use of satellite imagery and statistical method such as linear regression for shoreline change analysis are helpful for erosion monitoring and preventive measure.

Research paper thumbnail of Detection of Shoreline Changes Visakhapatnam Coast, Andhra Pradesh from Multi-Temporal Satellite Images

Research paper thumbnail of Storm surge vulnerability along Chennai– Cuddalore coast due to a severe cyclone THANE

A very severe cyclonic storm 'Thane' developed over the Bay of Bengal during 25-30 December 2011,... more A very severe cyclonic storm 'Thane' developed over the Bay of Bengal during 25-30 December 2011, crossed the Tamilnadu coast between Pondicherry and Cuddalore (southeast coast of India) in early hours of 30 December with a wind speed 120-140 km/h. The offshore tide record reveals that the surge started to generate around 1100 hours on 29 December 2011 with a height 0.4 m and later raised to 0.68 m at the time of land fall, that is, early hours (0000 hours) of 30 December 2011. Field reconnaissance survey on surge run-up and inundation distance at 15 selected locations of cyclone affected areas reveals that the vulnerability levels are highly variable along the coast. The inundation distance extended up to 30-230 m landward from the shoreline and run-up reached to 1.6-3.2 m above chart datum depending upon the cross-shore geometry of the location. In the areas (Verranampattinam, Chinamudaliyar kuppam and Silver beach) near cyclone landfall, the run-up was up to 2.5-3.2 m and the inundation distance extended up to a maximum of 230 m. However, in the areas located about 150 km north of cyclone landfall, the run-up limited from 1.6 to 1.7 m and the inundation distance extended up to only a maximum of 169 m. The inundation distance is mainly influenced by the slope of the beach. In the areas having beach slope between 1 in 135 and 1 in 220, the inundation distance was 210-230 m. However, in the areas having beach slope 1 in 17 to 1 in 34, the inundation distance is restricted between 35 and 50 m.

Research paper thumbnail of ISH Journal of Hydraulic Engineering Shoreline changes along the Northern coast of Chennai port, from field measurements

Shoreline movement is a complex phenomenon that is the result of both natural processes and man-m... more Shoreline movement is a complex phenomenon that is the result of both natural processes and man-made effects. Some of these processes occur over millennia; others are recent and may be cyclic. Understanding changes to the shore requires both a complete understanding of the underlying processes and an ability to accurately measure the changes. This paper presents the one-line shift method of determining datum-based shoreline positions for every month using Arc-GIS and sectional changes using data field measured data with the help of real-time kinematic GPS (RTK-GPS). This result shows the erosion and accretion patches and its volume for the study area.

Books by R.Kannan r

Research paper thumbnail of Spatio-Temporal Variability of Channel Planform Dynamics in Response to Spatial Expansion of Brick Kilns: A Case Study of the Downstream Course of Ichamati River, West

Springer Nature Singapore Pte Ltd, 2022

The intrusion of saltwater into a freshwater aquifer is of particular concern to the coastal comm... more The intrusion of saltwater into a freshwater aquifer is of particular concern to the coastal community. Removal of excess groundwater from the shallow aquifers is known to be the primary cause of contamination by saltwater. In this study, groundwater samples were obtained in the 2016 and 2017 pre-monsoon and post-monsoon seasons at 105 locations from dug wells and bore wells along the coast of Andhra Pradesh in the Krishna and Godavari deltas. Groundwater samples are tested for large ions to determine the infiltration of saltwater and to classify the salinity sources in the delta zone. The various hydrogeochemical parameters such as pH, electrical conductivity (EC), total dissolved solids (TDSs), Ca 2+ , Mg 2+ , K + , Na + , CO 3 , HCO 3 − , Cl − , and SO 4 2− are evaluated for the delineation of the intrusion of saltwater in terms of Ca 2+ /Mg 2+ , Cl − /(CO 3 + HCO 3 −), Na + /Cl − ratios. It is reported that the availability of fresh groundwater is 14% and 62%, respectively, during the pre-monsoon and post-monsoon seasons. The percentage levels of contamination in groundwater for slight, moderate, injuriously, highly, and severely categories are 43%, 22%, 12%, 8%, and 1%, respectively, for pre-monsoon season. However, during the post-monsoon season, the levels of contaminations in the above-mentioned categories are 22%, 9%, 4%, 1%, and 3%. The extent of contamination during the post-monsoon season is observed to be lower than during the pre-monsoon. The groundwater ratio of Na + − Cl − during pre-monsoon and post-monsoon seasons is 71% and 60%, respectively. The saltwater mixing index (SMI) is also measured, and extremely high is found.

Research paper thumbnail of Assessment of Groundwater Quality Index, Suitability for Irrigation and Domestic Purposes in Krishna-Godavari Delta Region, Southern India

Journal of Environmental Treatment Techniques, 2021

The water quality index (WQI) is a significant indicator for evaluating the quality of drinking w... more The water quality index (WQI) is a significant indicator for evaluating the quality of drinking water for end-users. The present work is aimed to assess the groundwater quality of the Krishna Godavari delta region in Andhra Pradesh State, for knowing its suitability for domestic, irrigation, and drinking purposes by calculating the WQI parameters and comparing it with WHO and Indian Standards. A total of 105 groundwater samples each for both Pre-monsoon and Post-monsoon periods have been collected during June 2017 and January 2018. The following 11 parameters were taken into account when calculating the WQI: pH, Electrical Conductivity (EC), Total Hardness (TH), Calcium (Ca2+), Magnesium (mg2+), Bicarbonate, Chloride(Cl-), Nitrate (Na+), Sulphate, Potassium (K+), and Total Dissolved Solids (TDS). Based on the WQI result, the samples were divided into five categories: Excellent, Good, Poor, Very Poor, and unfit for drinking purposes. In Pre-monsoon and Post monsoon season, the water quality index is 9%, 25%, 30%, 22%, 15% respectively 16%, 41%, 31%, 7%, and 5%. It can be concluded that during pre-monsoon and post-monsoon season 67% and 43% of water is not suitable for drinking purposes respectively and hence they require treatment before usage.

Research paper thumbnail of Hydrogeochemistry and Groundwater Quality Assessment of Lower Part of the Ponnaiyar River Basin, Cuddalore District, South India

Environmental Monitoring and Assessment, 2007

Research paper thumbnail of Shoreline Change Monitoring in Nellore Coast at East Coast Andhra Pradesh District using Remote Sensing and GIS

The shoreline is one of the most important features on earth's surface. They are highly dynamic a... more The shoreline is one of the most important features on earth's surface. They are highly dynamic and ever changing. Changes are over time scales including minutes, hours, decades and Centuries. Spatial scales vary from local to regional to worldwide. Although change is continuously occurring, it doesn't occur in a constant manner. Many factors influence these changes including the type of shoreline (rocky, sandy), wave activity, tidal variations, storms and human impacts. The shoreline change study is necessary for updating the shoreline change maps and management of natural resources. Shorelines are the key element in coastal GIS and provide the most information on coastal landform dynamics. The frequently monitoring coast only to accesses variation of shoreline changes. In this paper investigate the shoreline changes of Nellore district in Andhra Pradesh coast, as well as find the quantity of the erosion and accretion rate. Using multi-temporal resolution satellite data (TM & LISS III, IV) and Geographic information system (GIS) for past 25 years' period i.e. from 1989 to 2015. Nellore having length of coast line is 167km for this study used. The resultant coastal maps were used to estimate the geomorphologic changes and shifting of the shoreline position. This integrated study is found useful for exploring accretion and erosion processes in the region. About 87.6km of coastline was found to be accreting nature with average of +1.40m/yr followed by 38.4km of coastal line eroding with average of-1.36m/yr and stable coastline of 41.4km was found. This study demonstrates that combined use of satellite imagery and statistical method such as linear regression for shoreline change analysis are helpful for erosion monitoring and preventive measure.

Research paper thumbnail of Detection of Shoreline Changes Visakhapatnam Coast, Andhra Pradesh from Multi-Temporal Satellite Images

Research paper thumbnail of Storm surge vulnerability along Chennai– Cuddalore coast due to a severe cyclone THANE

A very severe cyclonic storm 'Thane' developed over the Bay of Bengal during 25-30 December 2011,... more A very severe cyclonic storm 'Thane' developed over the Bay of Bengal during 25-30 December 2011, crossed the Tamilnadu coast between Pondicherry and Cuddalore (southeast coast of India) in early hours of 30 December with a wind speed 120-140 km/h. The offshore tide record reveals that the surge started to generate around 1100 hours on 29 December 2011 with a height 0.4 m and later raised to 0.68 m at the time of land fall, that is, early hours (0000 hours) of 30 December 2011. Field reconnaissance survey on surge run-up and inundation distance at 15 selected locations of cyclone affected areas reveals that the vulnerability levels are highly variable along the coast. The inundation distance extended up to 30-230 m landward from the shoreline and run-up reached to 1.6-3.2 m above chart datum depending upon the cross-shore geometry of the location. In the areas (Verranampattinam, Chinamudaliyar kuppam and Silver beach) near cyclone landfall, the run-up was up to 2.5-3.2 m and the inundation distance extended up to a maximum of 230 m. However, in the areas located about 150 km north of cyclone landfall, the run-up limited from 1.6 to 1.7 m and the inundation distance extended up to only a maximum of 169 m. The inundation distance is mainly influenced by the slope of the beach. In the areas having beach slope between 1 in 135 and 1 in 220, the inundation distance was 210-230 m. However, in the areas having beach slope 1 in 17 to 1 in 34, the inundation distance is restricted between 35 and 50 m.

Research paper thumbnail of ISH Journal of Hydraulic Engineering Shoreline changes along the Northern coast of Chennai port, from field measurements

Shoreline movement is a complex phenomenon that is the result of both natural processes and man-m... more Shoreline movement is a complex phenomenon that is the result of both natural processes and man-made effects. Some of these processes occur over millennia; others are recent and may be cyclic. Understanding changes to the shore requires both a complete understanding of the underlying processes and an ability to accurately measure the changes. This paper presents the one-line shift method of determining datum-based shoreline positions for every month using Arc-GIS and sectional changes using data field measured data with the help of real-time kinematic GPS (RTK-GPS). This result shows the erosion and accretion patches and its volume for the study area.

Research paper thumbnail of Spatio-Temporal Variability of Channel Planform Dynamics in Response to Spatial Expansion of Brick Kilns: A Case Study of the Downstream Course of Ichamati River, West

Springer Nature Singapore Pte Ltd, 2022

The intrusion of saltwater into a freshwater aquifer is of particular concern to the coastal comm... more The intrusion of saltwater into a freshwater aquifer is of particular concern to the coastal community. Removal of excess groundwater from the shallow aquifers is known to be the primary cause of contamination by saltwater. In this study, groundwater samples were obtained in the 2016 and 2017 pre-monsoon and post-monsoon seasons at 105 locations from dug wells and bore wells along the coast of Andhra Pradesh in the Krishna and Godavari deltas. Groundwater samples are tested for large ions to determine the infiltration of saltwater and to classify the salinity sources in the delta zone. The various hydrogeochemical parameters such as pH, electrical conductivity (EC), total dissolved solids (TDSs), Ca 2+ , Mg 2+ , K + , Na + , CO 3 , HCO 3 − , Cl − , and SO 4 2− are evaluated for the delineation of the intrusion of saltwater in terms of Ca 2+ /Mg 2+ , Cl − /(CO 3 + HCO 3 −), Na + /Cl − ratios. It is reported that the availability of fresh groundwater is 14% and 62%, respectively, during the pre-monsoon and post-monsoon seasons. The percentage levels of contamination in groundwater for slight, moderate, injuriously, highly, and severely categories are 43%, 22%, 12%, 8%, and 1%, respectively, for pre-monsoon season. However, during the post-monsoon season, the levels of contaminations in the above-mentioned categories are 22%, 9%, 4%, 1%, and 3%. The extent of contamination during the post-monsoon season is observed to be lower than during the pre-monsoon. The groundwater ratio of Na + − Cl − during pre-monsoon and post-monsoon seasons is 71% and 60%, respectively. The saltwater mixing index (SMI) is also measured, and extremely high is found.