Beaches
; Coastal zones
; Electron emission
; Hazards
; Magnetic properties
; Magnetic susceptibility
; Magnetite
; Mixtures
; Multivariant analysis
; Pollution
; Sediments
; Statistical methods
; Anthropogenic activity
; Beach sediments
; Environmental magnetism
; Magnetic concentration
; Multivariate statistical analysis
; Pollution load indices
; Specific magnetic susceptibility
; Variable concentration
; Magnetism
; cadmium
; chromium
; copper
; ferric oxide
; iron oxide
; lead
; magnetite
; nickel
; potassium 40
; thorium 232
; uranium 238
; zinc
; metal
; radioisotope
; coastal sediment
; geomagnetism
; hematite
; magnetic property
; magnetite
; multivariate analysis
; sediment pollution
; Article
; chemical composition
; concentration (parameters)
; concentration response
; environmental magnetism
; India
; magnetism
; mineralogy
; multivariate analysis
; particle size
; pollution
; seashore
; sediment
; environmental monitoring
; India
; Kerala
; Environmental Monitoring
; Environmental Pollution
; Geologic Sediments
; India
; Magnetics
; Metals
; Radioisotopes
Scopus学科分类:
Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要:
Natural and anthropogenic activities along the coastal region of densely populated Kerala may introduce hazardous components into the coastal environment. The present study aimed to investigate the sources and impacts of hazardous components in beach sediments by environmental magnetism methods as additional tools. Magnetic parameters (such as mass-specific magnetic susceptibility χ�=�−�1.2–154.4ï¿½× 10−�8�m3�kg−�1) and ratios that describe the magnetic properties of minerals such as Fe-oxides, indicate variable concentration of mixtures of magnetite and hematite (magnetite/hematite). The direct significant relationships between the variables indicate that higher concentration magnetic parameters are associated with higher radionuclides and metal contents. Magnetic properties and multivariate statistical analyses evidence the presence of contrasting groups defined only using a reduced number of magnetic variables. One of these groups, the central area of the Kerala coastline, showed the highest magnetic concentrations of mixtures of magnetite/hematite and higher values (up to 6.7) of pollution load index because of extensive anthropogenic activities. � 2017 Elsevier Ltd
Centro de Investigaciones en F�sica e Ingenier�a del Centro de la Provincia de Buenos Aires (CIFICEN, CONICET-UNCPBA), Pinto 399, Tandil, Argentina; Department of Physics, Theivanai Ammal College for Women (Autonomous), Villupuram, Tamilnadu, India; Centro Marplatense de Investigaciones Matem�ticas (CEMIM-UNMDP-CONICET), Diagonal J. B. Alberdi 2695, Mar del Plata, Argentina; Department of Physics, Annamalai UniversityTamilnadu, India; Department of Physics, Sri Chandrasekharendra Saraswathi Viswa Mahavidyalaya, Enathur, Kanchipuram, Tamilnadu, India
Recommended Citation:
Chaparro M.A.E.,Suresh G.,Chaparro M.A.E.,et al. Magnetic assessment and pollution status of beach sediments from Kerala coast (southwestern India)[J]. Marine Pollution Bulletin,2017-01-01,117(2018-01-02)