Browsing by Subject "thorium isotopes"
Now showing items 1-8 of 8
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210Pb, 230Th, and 10Be in Central Indian Basin seamount sediments: Signatures of degassing and hydrothermal alteration of recent origin
(Wiley, 2008)Isotopic (sup(210)Pb, sup(238)U-sup(230)Th, sup(10)Be), major and trace elements, and micromorphological and microchemical data, were used to identify recent (approx. 100 yrs) hydrothermal alteration of a greater than 200 ... -
234Th scavenging and particle export fluxes from the upper 100 m of the Arabian Sea
(Current Science Association, 1996)We have determined the particle scavenging rates, export fluxes of @u234@@Th and settling particles from the upper 100 m of the Arabian Sea as a part of the JGOFS (India) Programme. The spatial and temporal measurements ... -
Enhanced export of carbon by salps during the northeast monsoon period in the northern Arabian Sea
(Elsevier, 2005)A drifting sediment trap was deployed and sup(234)Th activity in the water column was measured to calculate export flux of carbon at a time-series station in the northern Arabian Sea (lat. 21 degrees 30 minutes N; long. ... -
Ferromanganese nodules from the Central Indian Ocean Basin
(CRC Press, USA, 2000)In order to delineate a mine site for ferromanganese nodules, extensive surveys were conducted in Central Indian Ocean Basin. Mapping of the basin by multibeam swath bathymetry (Hydrosweep) has revealed many new bottom ... -
Radionuclide fluxes in the Arabian Sea: The role of particle composition
(Elsevier, 2005)The influence of the composition of the vertical particle flux on the removal of particle reactive natural radionuclides (sup(230)Th and sup(231)Pa) from the water column to the sediments is investigated. Radionuclide ... -
Settling fluxes of U- and Th-series nuclides in the Bay of Bengal: Results from time-series sediment trap studies
(Pergamon, 2000)A two-year (1990-1991) collection of sediment trap samples from three locations in the Bay of Bengal was analyzed for Al, Ca and U- and Th-series nuclides to obtain their annual fluxes and pattern of deposition. The ... -
Some aspects on the variations in depositional flux of excess Thorium-230 in the central Indian basin during Late Quaternary
(Indian Academy of Sciences, Bangalore, 1994)Examined in this paper is the tentative history of the depositional flux of @u230@@Th@dxs@@ (the unsupported fraction of @u230@@Th scavenged from the overlying water column), for the Late Quaternary period from a sediment ... -
sup(234) Th scavenging and particle export fluxes from the upper 100 m of the Arabian Sea
(Current Science Association, Bangalore, India, 1996)We have determined the particle scavenging rates, export fluxes of sup(234) Th and settling particles from the upper 100 m of the Arabian Sea as a part of the JGOFS (India) Programme. The spatial and temporal measurements ...