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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
1999
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| Online Access: | https://doi.org/10.1594/PANGAEA.856645 |
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| _version_ | 1867171838119903232 |
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| author | Rohling, Eelco J |
| author_facet | Rohling, Eelco J |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | A box model is presented to simulate changes in Mediterranean long-term average salinity and d18O over the past 20,000 years. Simulations are validated by comparison with observations. Sensitivity tests illustrate robustness with respect to the main assumptions and uncertainties. The results show that relative humidity over the Mediterranean remained relatively constant around 70%, apparently narrowly constrained to the lower end of the range observed globally over sea surfaces by the basin's land-locked character. Isotopic depletion in run off, relative to the present, is identified as the main potential cause of depletions in the Mediterranean d18O record. Also, slight increases in relative humidity (of the order of 5%) might have caused very pronounced isotopic depletions, such as that in sapropel S5 of the penultimate interglacial maximum. The model shows distinctly non proportional responses of d18O and salinity to environmental change, which argues against the use of isotope residuals in Mediterranean paleosalinity reconstructions. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_856645 |
| institution | PANGAEA |
| language | en |
| publishDate | 1999 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 3) Mediterranean core-top δ¹⁸O values for various planktonic foraminiferal species Rohling, Eelco J 3MO67; 75KS50; 75KS52; 82KS01; Adriatic Sea; Alboran Sea; Balear Sea; BAN8409GC; BC; Box corer; C1960.201; CEPAG; CHN119-16; CHN119-18; CHN119-22; CLIVAMPcruises; Contin. slope off Israel; Core17; Core19; Core190; Core20; Core3; CS70-5; CS72-37; DEPTH, sediment/rock; ETNA80; ETNA82; Event label; FAEGAS_IV; GA32; GC; Globigerina bulloides, δ18O; Globigerinella aequilateralis, δ18O; Globigerinoides ruber, δ18O; Globigerinoides ruber pink, δ18O; Globigerinoides sacculifer, δ18O; Globorotalia inflata, δ18O; Gravity corer; IN68-5; IN68-9; Ionian Sea; KC041; KC82-41; KET80-03; KET80-04; KET80-19; KET80-22; KET82-16; KET82-22; KS030; KS031; KS70-6; KS82-30; KS82-31; KS82-32; Latitude of event; Le Noroit; Le Suroît; Levantine; Longitude of event; Marion Dufresne (1972); MD84-641; MD84-658; Mediterranean Sea; Medor75; NOE; North Levantine Basin; Orbulina universa, δ18O; P6508-36B; PC; Piston corer; Pline Basin; RC09; RC09-178; RC09-181; RC09-191; Robert Conrad; Ship of opportunity; South Levantine Basin; South of Crete; Strait of Sicily; SU81-07; T87/2/20G; T87/26B; TR171-22; TR171-24; TR171-27; V10; V10-49; V10-51; Vema A box model is presented to simulate changes in Mediterranean long-term average salinity and d18O over the past 20,000 years. Simulations are validated by comparison with observations. Sensitivity tests illustrate robustness with respect to the main assumptions and uncertainties. The results show that relative humidity over the Mediterranean remained relatively constant around 70%, apparently narrowly constrained to the lower end of the range observed globally over sea surfaces by the basin's land-locked character. Isotopic depletion in run off, relative to the present, is identified as the main potential cause of depletions in the Mediterranean d18O record. Also, slight increases in relative humidity (of the order of 5%) might have caused very pronounced isotopic depletions, such as that in sapropel S5 of the penultimate interglacial maximum. The model shows distinctly non proportional responses of d18O and salinity to environmental change, which argues against the use of isotope residuals in Mediterranean paleosalinity reconstructions. |
| title | (Table 3) Mediterranean core-top δ¹⁸O values for various planktonic foraminiferal species |
| topic | 3MO67; 75KS50; 75KS52; 82KS01; Adriatic Sea; Alboran Sea; Balear Sea; BAN8409GC; BC; Box corer; C1960.201; CEPAG; CHN119-16; CHN119-18; CHN119-22; CLIVAMPcruises; Contin. slope off Israel; Core17; Core19; Core190; Core20; Core3; CS70-5; CS72-37; DEPTH, sediment/rock; ETNA80; ETNA82; Event label; FAEGAS_IV; GA32; GC; Globigerina bulloides, δ18O; Globigerinella aequilateralis, δ18O; Globigerinoides ruber, δ18O; Globigerinoides ruber pink, δ18O; Globigerinoides sacculifer, δ18O; Globorotalia inflata, δ18O; Gravity corer; IN68-5; IN68-9; Ionian Sea; KC041; KC82-41; KET80-03; KET80-04; KET80-19; KET80-22; KET82-16; KET82-22; KS030; KS031; KS70-6; KS82-30; KS82-31; KS82-32; Latitude of event; Le Noroit; Le Suroît; Levantine; Longitude of event; Marion Dufresne (1972); MD84-641; MD84-658; Mediterranean Sea; Medor75; NOE; North Levantine Basin; Orbulina universa, δ18O; P6508-36B; PC; Piston corer; Pline Basin; RC09; RC09-178; RC09-181; RC09-191; Robert Conrad; Ship of opportunity; South Levantine Basin; South of Crete; Strait of Sicily; SU81-07; T87/2/20G; T87/26B; TR171-22; TR171-24; TR171-27; V10; V10-49; V10-51; Vema |
| url | https://doi.org/10.1594/PANGAEA.856645 |