@article{fdi:010066709,
  title = {{D}elta {O}-18 and salinity variability from the {L}ast {G}lacial {M}aximum to {R}ecent in the {B}ay of {B}engal and {A}ndaman {S}ea},
  author = {{S}ijinkumar, {A}. {V}. and {C}lemens, {S}. and {N}ath, {B}. {N}. and {P}rell, {W}. and {B}enshila, {R}. and {L}engaigne, {M}atthieu},
  editor = {},
  language = {{ENG}},
  abstract = {{O}xygen isotopes of surface, thermocline and bottom dwelling foraminifera were analysed from two well dated {A}ndaman {S}ea cores and combined with nine previously published records from the {B}ay of {B}engal ({B}o{B}) and {A}ndaman {S}ea to create a transect spanning 20 degrees {N} to 5 degrees {N}. {C}ombined with temperature estimates and the observed seawater delta {O}-18-salinity relationship, these data are used to estimate past changes in {B}o{B} salinity structure. {C}ompared to modern, mid-{H}olocene (9-6 cal ka {BP}) surface waters in the northern {B}o{B} were 2.5 ps mu (8%) fresher, {A}ndaman {S}ea were 3.8 ps mu, (12%) fresher, and southern {B}o{B} were 1.2 ps mu. (3.5%) fresher. {C}onversely, during the last glacial maximum ({LGM}), surface waters in the northern {B}o{B} were 2.9 ps mu (9%) more saline while {A}ndaman {S}ea were essentially unchanged and southern {B}o{B} were 1.7 ps mu (4.9%) more saline compared to modern. {T}he relative freshness of the {A}ndaman during the last glacial maximum is likely the result of basin morphology during sea level low stand, resulting in reduced surface water mixing with the open {B}o{B} as well as shelf emergence, causing increased proximity of the core locations to river outflow. {S}ensitivity experiments using a regional ocean model indicate that the increased mid-{H}olocene north to south (20 degrees {N} to 5 degrees {N}) salinity gradient can be achieved with a 50% increase in precipitation/runoff while the decreased glacial age gradient can be achieved with a 50% reduction in precipitation/runoff. {D}uring the deglaciation, both surface and thermocline-dwelling species in the {A}ndaman and northern {B}o{B} exhibit depleted delta {O}-18 within the {Y}ounger {D}ryas ({YD}), indicating colder and/or more saline conditions. {N}one of the records from the southern {B}o{B} site have clear {YD} structure, possibly due to the combined effects of bioturbation and low sedimentation rates.},
  keywords = {{O}xygen isotope ; {S}alinity gradient ; {S}tratification ; {S}ummer monsoon ; {L}ate {Q}uaternary ; {B}ay of {B}engal ; {A}ndaman {S}ea ; {OCEAN} {INDIEN} ; {BENGALE} {GOLFE} ; {ANDAMAN} {MER}},
  booktitle = {},
  journal = {{Q}uaternary {S}cience {R}eviews},
  volume = {135},
  numero = {},
  pages = {79--91},
  ISSN = {0277-3791},
  year = {2016},
  DOI = {10.1016/j.quascirev.2016.01.022},
  URL = {https://www.documentation.ird.fr/hor/fdi:010066709},
}