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| Autores principales: | , , , , , , , , , , , , , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2019
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| Materias: | |
| Acceso en línea: | https://doi.org/10.1594/PANGAEA.899212 |
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| _version_ | 1867171013597331456 |
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| author | Liu, Yi Lo, Li Shi, Zhengguo Wei, Kuo-Yen Chou, Chien-Ju Chen, Yi-Chi Chuang, Chih-Kai Wu, Chung-Che Mii, Horng-Sheng Peng, Zicheng Amakawa, Hiroshi Burr, George S Lee, Shih-Yu Elderfield, Henry Shen, Chuan-Chou |
| author_facet | Liu, Yi Lo, Li Shi, Zhengguo Wei, Kuo-Yen Chou, Chien-Ju Chen, Yi-Chi Chuang, Chih-Kai Wu, Chung-Che Mii, Horng-Sheng Peng, Zicheng Amakawa, Hiroshi Burr, George S Lee, Shih-Yu Elderfield, Henry Shen, Chuan-Chou |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Abstract: The Intertropical Convergence Zone (ITCZ) encompasses the heaviest rain belt on the Earth. Few direct long-term records, especially in the Pacific, limit our understanding of long-term natural variability for predicting future ITCZ migration. Here we present a tropical precipitation record from the Southern Hemisphere covering the past 282,000 years, inferred from a marine sedimentary sequence collected off the eastern coast of Papua New Guinea. Unlike the precession paradigm expressed in its East Asian counterpart, our record shows that the western Pacific ITCZ migration was influenced by combined precession and obliquity changes. The obliquity forcing could be primarily delivered by a cross-hemispherical thermal/pressure contrast, resulting from the asymmetric continental configuration between Asia and Australia in a coupled East Asian-Australian circulation system. Our finding suggests that the obliquity forcing may play a more important role in global hydroclimate cycles than previously thought. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_899212 |
| institution | PANGAEA |
| language | en |
| publishDate | 2019 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Age model and Nd/Ca ratio of planktonic foraminifera from sediment core MD05-2925 off the Solomon Sea Liu, Yi Lo, Li Shi, Zhengguo Wei, Kuo-Yen Chou, Chien-Ju Chen, Yi-Chi Chuang, Chih-Kai Wu, Chung-Che Mii, Horng-Sheng Peng, Zicheng Amakawa, Hiroshi Burr, George S Lee, Shih-Yu Elderfield, Henry Shen, Chuan-Chou After Lo et al. 2017; AGE; CALYPSO2; Calypso Corer II; DEPTH, sediment/rock; Egum; Globigerinoides ruber, Neodymium/Calcium ratio; Globigerinoides sacculifer, Neodymium/Calcium ratio; IMAGES XIII - PECTEN; Intertropical Convergence Zone; Marion Dufresne (1995); MD052925; MD05-2925; MD148; Monsoon; Orbital pacing; Pulleniatina obliquiloculata, Neodymium/Calcium ratio; Western Pacific Warm Pool Abstract: The Intertropical Convergence Zone (ITCZ) encompasses the heaviest rain belt on the Earth. Few direct long-term records, especially in the Pacific, limit our understanding of long-term natural variability for predicting future ITCZ migration. Here we present a tropical precipitation record from the Southern Hemisphere covering the past 282,000 years, inferred from a marine sedimentary sequence collected off the eastern coast of Papua New Guinea. Unlike the precession paradigm expressed in its East Asian counterpart, our record shows that the western Pacific ITCZ migration was influenced by combined precession and obliquity changes. The obliquity forcing could be primarily delivered by a cross-hemispherical thermal/pressure contrast, resulting from the asymmetric continental configuration between Asia and Australia in a coupled East Asian-Australian circulation system. Our finding suggests that the obliquity forcing may play a more important role in global hydroclimate cycles than previously thought. |
| title | Age model and Nd/Ca ratio of planktonic foraminifera from sediment core MD05-2925 off the Solomon Sea |
| topic | After Lo et al. 2017; AGE; CALYPSO2; Calypso Corer II; DEPTH, sediment/rock; Egum; Globigerinoides ruber, Neodymium/Calcium ratio; Globigerinoides sacculifer, Neodymium/Calcium ratio; IMAGES XIII - PECTEN; Intertropical Convergence Zone; Marion Dufresne (1995); MD052925; MD05-2925; MD148; Monsoon; Orbital pacing; Pulleniatina obliquiloculata, Neodymium/Calcium ratio; Western Pacific Warm Pool |
| url | https://doi.org/10.1594/PANGAEA.899212 |