Two 30 000 year high-resolution greyvalue time series from the Santa Barbara Basin and the Guaymas Basin
Schaaf, M.; Thurow, J. (1998). Two 30 000 year high-resolution greyvalue time series from the Santa Barbara Basin and the Guaymas Basin, in: Cramp, A. et al. Geological evolution of ocean basins: results from the Ocean Drilling Program. Geological Society Special Publication, 131: pp. 101-110. https://dx.doi.org/10.1144/GSL.SP.1998.131.01.08
In: Cramp, A. et al. (1998). Geological evolution of ocean basins: Results from the Ocean Drilling Program. Geological Society Special Publication, 131. Geological Society: London. ISBN 1-86239-003-7. XI, 323 pp., meer
In: Hartley, A.J. et al. (Ed.) Geological Society Special Publication. Geological Society of London: Oxford; London; Edinburgh; Boston, Mass.; Carlton, Vic.. ISSN 0305-8719; e-ISSN 2041-4927, meer
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Analysis > Sediment analysis
Basins
INE, USA, California, Santa Barbara Basin
ISE, Mexico, California Gulf, Guaymas Basin
Time series
USA, California, Channel I., Santa Barbara I.
Guaymas Basin [Marine Regions]; Santa Barbara [Marine Regions]
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| Abstract |
Two 30000 year records of sedimentary greyvalues from the Santa Barbara Basin and the Guaymas Basin are presented. The records exhibit substantial variability on all timescales from millennial to annual. Strong shifts towards darker greyvalues parallel the postglacial sea-level rise. Approximately 1500 year cycles occur persistently in both records. Spectral analyses proved the existence of Gleissberg (86 year), sunspot (11 year, 22 year), and El Niño (3–9 year). cycles in almost all cores from both sites. In particular El Niño Southern Oscillation forcing could be traced back until the end of the last glacial cold period. Both time series show a high degree of similarity both in the time and the frequency domain, indicating equivalent system responses to external forcing events. |
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