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| Titel |
The impacts of Tibetan uplift history on palaeoclimate proxies |
| VerfasserIn |
D. Lunt, R. Flecker |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250027883
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| Zusammenfassung |
| Several palaeoclimate proxy records have been interpreted as representing the direct effects
of Tibetan uplift on climate, and particularly the Asian monsoon. However, there are possible
other causes for the transitions and changes which have been observed, such as varying CO2,
nodes in orbital forcing, or changing continental positions. In this study we model the
direct effects of Tibetan uplift on climate and three main palaeoclimate proxies -
SSTs, vegetation, and river discharge. We investigate whether the climatic effects of
uplift are likely to be detectable in the various proxy records, and also whether the
proxies could be used to distinguish between different paradigms for the history
of plateau uplift. We find that the SSTs in the western Pacific and Indian Ocean
are generally insensitive to Tibetan uplift; however, vegetation in the region of
the plateau itself, and river discharge from the Yangtze, Pearl, and in particular
the Ganges/Brahmaputra, can give a strong indication of Tibetan uplift history. |
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