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| Main Authors: | , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2003
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| Online Access: | https://doi.org/10.1594/PANGAEA.736624 |
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| _version_ | 1867170457327763456 |
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| author | Arz, Helge Wolfgang Lamy, Frank Pätzold, Jürgen Müller, Peter J Prins, Maarten Arnoud |
| author_facet | Arz, Helge Wolfgang Lamy, Frank Pätzold, Jürgen Müller, Peter J Prins, Maarten Arnoud |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Paleosalinity and terrigenous sediment input changes reconstructed on two sediment cores from the northernmost Red Sea were used to infer hydrological changes at the southern margin of the Mediterranean climate zone during the Holocene. Between approximately 9.25 and 7.25 thousand years ago, about 3 per mil reduced surface water salinities and enhanced fluvial sediment input suggest substantially higher rainfall and freshwater runoff, which thereafter decreased to modern values. The northern Red Sea humid interval is best explained by enhancement and southward extension of rainfall from Mediterranean sources, possibly involving strengthened early-Holocene Arctic Oscillation patterns and a regional monsoon-type circulation induced by increased land-sea temperature contrasts. We conclude that Afro-Asian monsoonal rains did not cross the subtropical desert zone during the early to mid-Holocene. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_736624 |
| institution | PANGAEA |
| language | en |
| publishDate | 2003 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Age determination and clay content of sediment core GeoB5804-4 Arz, Helge Wolfgang Lamy, Frank Pätzold, Jürgen Müller, Peter J Prins, Maarten Arnoud Center for Marine Environmental Sciences; GeoB5804-4; Gravity corer (Kiel type); Gulf of Aqaba; M44/3; MARUM; Meteor (1986); SL Paleosalinity and terrigenous sediment input changes reconstructed on two sediment cores from the northernmost Red Sea were used to infer hydrological changes at the southern margin of the Mediterranean climate zone during the Holocene. Between approximately 9.25 and 7.25 thousand years ago, about 3 per mil reduced surface water salinities and enhanced fluvial sediment input suggest substantially higher rainfall and freshwater runoff, which thereafter decreased to modern values. The northern Red Sea humid interval is best explained by enhancement and southward extension of rainfall from Mediterranean sources, possibly involving strengthened early-Holocene Arctic Oscillation patterns and a regional monsoon-type circulation induced by increased land-sea temperature contrasts. We conclude that Afro-Asian monsoonal rains did not cross the subtropical desert zone during the early to mid-Holocene. |
| title | Age determination and clay content of sediment core GeoB5804-4 |
| topic | Center for Marine Environmental Sciences; GeoB5804-4; Gravity corer (Kiel type); Gulf of Aqaba; M44/3; MARUM; Meteor (1986); SL |
| url | https://doi.org/10.1594/PANGAEA.736624 |