https://scholars.lib.ntu.edu.tw/handle/123456789/626977
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Nguyen, Dung Chi | en_US |
dc.contributor.author | Lee, Shih Yu | en_US |
dc.contributor.author | YUE-GAU CHEN | en_US |
dc.contributor.author | Chiang, Hong Wei | en_US |
dc.contributor.author | CHUAN-CHOU SHEN | en_US |
dc.contributor.author | Wang, Xianfeng | en_US |
dc.contributor.author | Doan, Lam Dinh | en_US |
dc.contributor.author | Lin, Yin | en_US |
dc.date.accessioned | 2023-01-06T09:15:36Z | - |
dc.date.available | 2023-01-06T09:15:36Z | - |
dc.date.issued | 2022-06-01 | - |
dc.identifier.issn | 25900560 | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/626977 | - |
dc.description.abstract | Heinrich Event-3 (HE-3) differs from other Heinrich Events (HEs) in terms of the strength of its expression in climatic records from different global localities. Here, we present new high resolution δ18O records from a composite speleothem record spanning from 31.5 to 28.4 ka within the HE-3 time interval. The record is obtained from two stalagmites collected from the Thuong Thien cave (TT), northern Vietnam, which exhibit growth rates of 0.12 to 0.68 mm/yr. The TT record shows a pronounced positive excursion of δ18O values of stalagmite in the time interval from 30.8 ka and lasted about one thousand years. Specifically, the δ18O reached maximum between ∼30.3–30.2 ka and returned to low values at 29.5 ka. Both the onset and termination phases of the excursion show gradual changes in δ18O values that form a relatively symmetric ‘V’ shape. The excursion suggests that the Indian Summer Monsoon (ISM), which modulates the climate and hydrology in the region, has endured dramatic weakening in response to HE-3. The timing and duration of the monsoonal decline are consistent with a significant slowdown of the Atlantic Meridional Ocean Circulation (AMOC), which probably drove the southward migration of the intertropical convergence zone (ITCZ) and consequently a decrease in precipitation over the Asian monsoonal region including northern Vietnam. To test the proposed mechanism, we further performed modeling simulations via an atmosphere general circulation model with a coupled slab ocean. Simulated results confirm both the scale and mechanistic connections between cooling in the North Atlantic and changes in precipitation at the Thuong Thien cave locality. | en_US |
dc.relation.ispartof | Journal of Asian Earth Sciences: X | en_US |
dc.subject | Climate change | Heinrich event | Speleothem | Tropical Asia | en_US |
dc.subject.classification | [SDGs]SDG13 | - |
dc.title | Precipitation response to Heinrich Event-3 in the northern Indochina as revealed in a high-resolution speleothem record | en_US |
dc.type | journal article | en |
dc.identifier.doi | 10.1016/j.jaesx.2022.100090 | - |
dc.identifier.scopus | 2-s2.0-85126953076 | - |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/85126953076 | - |
dc.relation.journalvolume | 7 | en_US |
item.fulltext | no fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.cerifentitytype | Publications | - |
item.openairetype | journal article | - |
item.grantfulltext | none | - |
crisitem.author.dept | Geosciences | - |
crisitem.author.orcid | 0000-0002-8693-583X | - |
crisitem.author.orcid | 0000-0003-2833-2771 | - |
crisitem.author.parentorg | College of Science | - |
顯示於: | 地質科學系 |
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