The chemistry of Mediterranean outflow and its interactions with surrounding waters

Cabeçadas, G.; Brogueira, Maria José; Gonçalves, Célia

doi:10.1016/s0967-0645(02)00154-6

Cited by 32 publications

(31 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…are more likely found in bottom waters that are more anoxic (Jorissen et al, ). A stronger MOW during the LGM, being a water mass relatively poor in oxygen (e.g., Ambar et al, ; Cabeçadas et al, ), supports the observed shift in the benthic community.…”

Section: Discussionmentioning

confidence: 64%

“…Upon exiting the Strait of Gibraltar, MOW follows the shelf down slope through the Gulf of Cadiz and flows northwestward settling as an intermediate contour current in several layers within the North Atlantic. Its salinity from 36.5 to 37.5 and temperature from 10.5 to 14.0°C (Baringer & Price, ; Borenäs et al, ; Cabeçadas et al, ) are observed between 300 and 1,400 m depth (Ambar & Howe, ). Note that the temperature signature of MOW is less prominent than its salinity signature in the Gulf of Cadiz (Figure ; Ambar et al, ; Borenäs et al, ; Cabeçadas et al, ).…”

Section: Modern Hydrographic Settingmentioning

confidence: 99%

See 1 more Smart Citation

A Saltier Glacial Mediterranean Outflow

Dijk

Ziegler

Nooijer

et al. 2018

Paleoceanog and Paleoclimatol

View full text Add to dashboard Cite

The state of Atlantic Meridional Overturning Circulation (AMOC) is influenced by both the strength and the location of the Mediterranean Outflow Water (MOW) plume in the Gulf of Cadiz. To evaluate the influence of MOW on AMOC over deglaciations, precise and accurate salinity and temperature reconstructions are needed. For this purpose, we measured Mg/Ca and clumped isotopes of several benthic foraminiferal species at Integrated Ocean Drilling Program Site U1390 in the Gulf of Cadiz. The clumped isotope results of Cibicidoides pachyderma, Uvigerina mediterranea, and Pyrgo spp. are consistent between species and record no significant difference in Last Glacial Maximum to Holocene deep water temperature. Over the deglaciation, the Mg/Ca‐based temperatures derived from U. mediterranea indicate three periods of MOW absence at Site U1390. Mg/Ca‐based temperatures of Hoeglundina elegans and C. pachyderma are on average 6°C too cold when compared to the present core‐top temperature, which we explain by a carbonate ion effect on these epibenthic species related to the high alkalinity of the MOW. Combining deep water temperature estimates with the benthic oxygen isotope data and considering different relationships between seawater oxygen isotopes and salinity, we infer a salinity decrease of MOW by three to eight units over the deglaciation and four units during Sapropel 1, accounting for the global δ18O depletion due to the decrease in ice volume. Our findings confirm that the Mediterranean Sea accumulates excess salt during a glacial low stand and suggest that this salt surged into the Atlantic over the deglaciation, presumably during Heinrich Stadial 1.

show abstract

Section: Discussionmentioning

confidence: 64%

Section: Modern Hydrographic Settingmentioning

confidence: 99%

A Saltier Glacial Mediterranean Outflow

Dijk

Ziegler

Nooijer

et al. 2018

Paleoceanog and Paleoclimatol

View full text Add to dashboard Cite

show abstract

“…The outer layers of the nodules are characterised by their Mn depletion and high Fe enrichment in comparison with the average of the nodules. The low dissolved oxygen values in the MOW water (Cabe<;adas et al, 2002) could have contributed, together with the intense undercurrent, to the depletion of Mn from the outer layers in the exhumed nodules . The different thermodynamic properties of solubility and therefore mobility ofFe 2 + and Mn 2 + during the erosive action of the MOW control the segregation of Mn.…”

Section: Stage Two: the Influence Of The Mediterranean Outflow Water mentioning

confidence: 99%

Ferromanganese nodules and micro-hardgrounds associated with the Cadiz Contourite Channel (NE Atlantic): Palaeoenvironmental records of fluid venting and bottom currents

et al. 2012

View full text Add to dashboard Cite

“…The high A T along the shelf edge must therefore be related to the more saline ENAW in the upper 1000m along the eastern side of the Trough, and also due to the presence of MW between 700-1000m, a highly saline core, characteristically low in oxygen and high in A T (Cabecadas et al, 2002;Howe et al, 1974;SantanaCasiano et al, 2002). Like oxygen, A T can therefore be used as an effective tracer of MW in the Rockall Trough.…”

Section: Intermediate Waters (500-1100m)mentioning

confidence: 99%