Prolonged Monsoonal Moisture Availability Preconditioned Glaciation of the Tibetan Plateau During the Mid‐Pleistocene Transition
Abstract Paleohydrological data comprising pollen assemblages and leaf‐wax hydrogen isotopes (δDwax) from paleolake sediments in the Qaidam Basin (China) provide evidence for a link between increased moisture availability on the Tibetan Plateau and global cooling during the Mid‐Pleistocene Transitio...
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| Format: | Article |
| Language: | English |
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Wiley
2018-12-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2018GL079303 |
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| author | Andreas Koutsodendris Dirk Sachse Erwin Appel Christian Herb Tobias Fischer Xiaomin Fang Jörg Pross |
| author_facet | Andreas Koutsodendris Dirk Sachse Erwin Appel Christian Herb Tobias Fischer Xiaomin Fang Jörg Pross |
| author_sort | Andreas Koutsodendris |
| collection | DOAJ |
| description | Abstract Paleohydrological data comprising pollen assemblages and leaf‐wax hydrogen isotopes (δDwax) from paleolake sediments in the Qaidam Basin (China) provide evidence for a link between increased moisture availability on the Tibetan Plateau and global cooling during the Mid‐Pleistocene Transition. Notably, they document the persistence of humid and cold conditions during Marine Isotope Stages 24–22 (936–866 ka) suggesting that boundary conditions favorable for extended glaciation on the Tibetan Plateau first developed at ~900 ka. Our δDwax results indicate a strong influence of proximal (monsoonal) moisture sources during that glacial, in agreement with the intensification of the interhemispheric moisture transport resulting from Antarctic ice volume increase at ~900 ka. The consistency of our results with other marine and terrestrial climate data sets suggests that extended glaciation on the Tibetan Plateau may have initiated ~500 ka earlier than previously assumed, implying that midlatitude ice sheets actively contributed to global cooling during the Mid‐Pleistocene Transition. |
| format | Article |
| id | doaj-art-28abed29e3aa42e6b7b292ace25663a7 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2018-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-28abed29e3aa42e6b7b292ace25663a72025-08-20T01:51:44ZengWileyGeophysical Research Letters0094-82761944-80072018-12-01452313,02013,03010.1029/2018GL079303Prolonged Monsoonal Moisture Availability Preconditioned Glaciation of the Tibetan Plateau During the Mid‐Pleistocene TransitionAndreas Koutsodendris0Dirk Sachse1Erwin Appel2Christian Herb3Tobias Fischer4Xiaomin Fang5Jörg Pross6Paleoenvironmental Dynamics Group, Institute of Earth Sciences Heidelberg University Heidelberg GermanyGeomorphology GFZ German Research Centre for Geosciences Potsdam GermanyDepartment of Geosciences University of Tübingen Tübingen GermanyDepartment of Geosciences University of Tübingen Tübingen GermanyPaleoenvironmental Dynamics Group, Institute of Earth Sciences Heidelberg University Heidelberg GermanyChinese Academy of Sciences Institute of Tibetan Plateau Research Beijing ChinaPaleoenvironmental Dynamics Group, Institute of Earth Sciences Heidelberg University Heidelberg GermanyAbstract Paleohydrological data comprising pollen assemblages and leaf‐wax hydrogen isotopes (δDwax) from paleolake sediments in the Qaidam Basin (China) provide evidence for a link between increased moisture availability on the Tibetan Plateau and global cooling during the Mid‐Pleistocene Transition. Notably, they document the persistence of humid and cold conditions during Marine Isotope Stages 24–22 (936–866 ka) suggesting that boundary conditions favorable for extended glaciation on the Tibetan Plateau first developed at ~900 ka. Our δDwax results indicate a strong influence of proximal (monsoonal) moisture sources during that glacial, in agreement with the intensification of the interhemispheric moisture transport resulting from Antarctic ice volume increase at ~900 ka. The consistency of our results with other marine and terrestrial climate data sets suggests that extended glaciation on the Tibetan Plateau may have initiated ~500 ka earlier than previously assumed, implying that midlatitude ice sheets actively contributed to global cooling during the Mid‐Pleistocene Transition.https://doi.org/10.1029/2018GL079303Tibetan PlateauMid‐Pleistocene Transitionleaf‐wax hydrogen isotopespollen assemblagesQaidam Basinglacier development |
| spellingShingle | Andreas Koutsodendris Dirk Sachse Erwin Appel Christian Herb Tobias Fischer Xiaomin Fang Jörg Pross Prolonged Monsoonal Moisture Availability Preconditioned Glaciation of the Tibetan Plateau During the Mid‐Pleistocene Transition Geophysical Research Letters Tibetan Plateau Mid‐Pleistocene Transition leaf‐wax hydrogen isotopes pollen assemblages Qaidam Basin glacier development |
| title | Prolonged Monsoonal Moisture Availability Preconditioned Glaciation of the Tibetan Plateau During the Mid‐Pleistocene Transition |
| title_full | Prolonged Monsoonal Moisture Availability Preconditioned Glaciation of the Tibetan Plateau During the Mid‐Pleistocene Transition |
| title_fullStr | Prolonged Monsoonal Moisture Availability Preconditioned Glaciation of the Tibetan Plateau During the Mid‐Pleistocene Transition |
| title_full_unstemmed | Prolonged Monsoonal Moisture Availability Preconditioned Glaciation of the Tibetan Plateau During the Mid‐Pleistocene Transition |
| title_short | Prolonged Monsoonal Moisture Availability Preconditioned Glaciation of the Tibetan Plateau During the Mid‐Pleistocene Transition |
| title_sort | prolonged monsoonal moisture availability preconditioned glaciation of the tibetan plateau during the mid pleistocene transition |
| topic | Tibetan Plateau Mid‐Pleistocene Transition leaf‐wax hydrogen isotopes pollen assemblages Qaidam Basin glacier development |
| url | https://doi.org/10.1029/2018GL079303 |
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