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| Autores principales: | , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2014
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| Materias: | |
| Acceso en línea: | https://doi.org/10.1594/PANGAEA.828372 |
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| _version_ | 1867171366962200576 |
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| author | de Winter, Niels J Zeeden, Christian Hilgen, Frederik J |
| author_facet | de Winter, Niels J Zeeden, Christian Hilgen, Frederik J |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Deep marine successions of early Campanian age from DSDP site 516F drilled at low paleolatitudes in the South Atlantic reveal distinct sub-Milankovitch variability in addition to precession and eccentricity related variations. Elemental abundance ratios point to a similar 5 climatic origin for these variations and exclude a quadripartite structure - as observed in the Mediterranean Neogene - of the precession related cycles as an explanation for the inferred semi-precession cyclicity in MS. However, the semi-precession cycle itself is likely an artifact, reflecting the first harmonic of the precession signal. The sub-Milankovitch variability is best approximated by a ~ 7 kyr cycle as shown by 10 spectral analysis and bandpass filtering. The presence of sub-Milankovitch cycles with a period similar to that of Heinrich events of the last glacial cycle is consistent with linking the latter to low-latitude climate change caused by a non-linear response to precession induced variations in insolation between the tropics. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_828372 |
| institution | PANGAEA |
| language | en |
| publishDate | 2014 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Magnetic susceptibility, XRF and color reflectance data of DSDP Hole 72-516F, cores 113 and 114 de Winter, Niels J Zeeden, Christian Hilgen, Frederik J Center for Marine Environmental Sciences; Deep Sea Drilling Project; DSDP; MARUM Deep marine successions of early Campanian age from DSDP site 516F drilled at low paleolatitudes in the South Atlantic reveal distinct sub-Milankovitch variability in addition to precession and eccentricity related variations. Elemental abundance ratios point to a similar 5 climatic origin for these variations and exclude a quadripartite structure - as observed in the Mediterranean Neogene - of the precession related cycles as an explanation for the inferred semi-precession cyclicity in MS. However, the semi-precession cycle itself is likely an artifact, reflecting the first harmonic of the precession signal. The sub-Milankovitch variability is best approximated by a ~ 7 kyr cycle as shown by 10 spectral analysis and bandpass filtering. The presence of sub-Milankovitch cycles with a period similar to that of Heinrich events of the last glacial cycle is consistent with linking the latter to low-latitude climate change caused by a non-linear response to precession induced variations in insolation between the tropics. |
| title | Magnetic susceptibility, XRF and color reflectance data of DSDP Hole 72-516F, cores 113 and 114 |
| topic | Center for Marine Environmental Sciences; Deep Sea Drilling Project; DSDP; MARUM |
| url | https://doi.org/10.1594/PANGAEA.828372 |