Stable oxygen and carbon isotope ratios of Globigerinoides sacculifer of ODP Hole 134-828A from the Southwest Pacific (Table 2)
Fuente:
PANGAEA
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
1997
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1867171746695610368 |
|---|---|
| author | Martínez, José Ignacio De Deckker, Patrick Chivas, Allan R |
| author_facet | Martínez, José Ignacio De Deckker, Patrick Chivas, Allan R |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Oxygen-isotope analyses of planktonic foraminifera from 57 western Pacific deep-sea cores are compared for the Holocene and the Last Glacial Maximum (LGM). Carbonate dissolution, sedimentation rates/bioturbation, sample density, and vital effects are assessed before the sea-surface salinity signal of these records is reconstructed. Average glacial-interglacial Delta delta18O values in the western Pacific are found to be close to those in the Atlantic Ocean (1.76 ‰ in the Pacific compared to 1.80 ‰ in the Atlantic), questioning previous suggestions of a larger salinity difference between the Atlantic and the Pacific oceans during the LGM. During the LGM, sea-surface salinity was higher in the western Pacific than today (by >~1 ‰), implying that evaporation minus precipitation was higher all over the region. The minimum change in sea-surface salinity occurred around the equator at the core of the Western Pacific Warm Pool. Holocene high-amplitude, high-frequency fluctuations in planktonic delta18O records north and south of the present limits of the Western Pacific Warm Pool are indicative of sea-surface temperature and/or sea-surface salinity variations related to its expansion and contraction at the scale of thousands of years. Such high-amplitude, high-frequency fluctuations at the edge of the WPWP are best documented in the delta18O signal of ODP Hole 828A offshore Vanuatu, so far the best high-resolution record for the western Pacific. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_690363 |
| institution | PANGAEA |
| language | en |
| publishDate | 1997 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Stable oxygen and carbon isotope ratios of Globigerinoides sacculifer of ODP Hole 134-828A from the Southwest Pacific (Table 2) Martínez, José Ignacio De Deckker, Patrick Chivas, Allan R 134-828A; Coral Sea; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Globigerinoides sacculifer, δ13C; Globigerinoides sacculifer, δ18O; Joides Resolution; Leg134; Mass spectrometer Finnigan MAT 251; Ocean Drilling Program; ODP; Sample code/label Oxygen-isotope analyses of planktonic foraminifera from 57 western Pacific deep-sea cores are compared for the Holocene and the Last Glacial Maximum (LGM). Carbonate dissolution, sedimentation rates/bioturbation, sample density, and vital effects are assessed before the sea-surface salinity signal of these records is reconstructed. Average glacial-interglacial Delta delta18O values in the western Pacific are found to be close to those in the Atlantic Ocean (1.76 ‰ in the Pacific compared to 1.80 ‰ in the Atlantic), questioning previous suggestions of a larger salinity difference between the Atlantic and the Pacific oceans during the LGM. During the LGM, sea-surface salinity was higher in the western Pacific than today (by >~1 ‰), implying that evaporation minus precipitation was higher all over the region. The minimum change in sea-surface salinity occurred around the equator at the core of the Western Pacific Warm Pool. Holocene high-amplitude, high-frequency fluctuations in planktonic delta18O records north and south of the present limits of the Western Pacific Warm Pool are indicative of sea-surface temperature and/or sea-surface salinity variations related to its expansion and contraction at the scale of thousands of years. Such high-amplitude, high-frequency fluctuations at the edge of the WPWP are best documented in the delta18O signal of ODP Hole 828A offshore Vanuatu, so far the best high-resolution record for the western Pacific. |
| title | Stable oxygen and carbon isotope ratios of Globigerinoides sacculifer of ODP Hole 134-828A from the Southwest Pacific (Table 2) |
| topic | 134-828A; Coral Sea; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Globigerinoides sacculifer, δ13C; Globigerinoides sacculifer, δ18O; Joides Resolution; Leg134; Mass spectrometer Finnigan MAT 251; Ocean Drilling Program; ODP; Sample code/label |
| url | https://doi.org/10.1594/PANGAEA.690363 |