Show simple item record

dc.contributor.authorChauhan, O.S.
dc.contributor.authorSuneethi, J.
dc.date.accessioned2006-08-28T07:47:38Z
dc.date.available2006-08-28T07:47:38Z
dc.date.issued2001
dc.identifier.citationCurrent Science, vol.81(9), 1231-1234pp.
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/274
dc.description.abstractBased upon the oxygen isotopic records of Globigerinoide sacculifer, the clay mineral assemblages and aridity indicator chlorite/illite (C/I) ratio, the palaeoclimatic changes during the past 18 Ka BP have been archived. The results show intense arid climate between 18 and 15 14C Ka BP, a variable climate between 15 and 13 Ka BP, and again an arid climate at 12.5 Ka BP. The negative d18O, reduced C/I and higher smectite document a humid phase culminating at 12 Ka BP. Arid climate phases are also identified at 10.3 and 11.5 Ka BP. The later event matches well with that of the ‘Younger Dryas’ event of world climate models. The beginning of the Holocene is marked by lighter d18O values (at around 9.5 Ka BP), which has been interpreted as onset of a humid phase and high freshwater influx into the bay, correlating with the world climatic event ‘mwp IB’. We also identify two more arid events at ~ 4800 and 2300– 2200 yr, hitherto unreported from the Bay of Bengal.
dc.format.extent83968 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherIndian Academy of Sciences
dc.subjectBay of Bengal
dc.subjectMonsoon variability
dc.subjectIndian Ocean
dc.subjectmonsoon
dc.title18 Ka BP records of climatic changes, Bay of Bengal: Isotopic and sedimentological evidences
dc.typeJournal Article


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record