Sedimentology and stable oxygen isotope record of the northern South China Sea

High-resolution sediment records from the South China Sea reveal a winter monsoon dominated glacial regime and a summer monsoon dominated Holocene regime during the last glacial cycle. A fundamental change between regimes occurred during deglaciation through a series of millennial reoccurrences of century-scale changes in the East Asian monsoon (EAM) climate. These abrupt events centered at 17.0, 15.9, 15.5, 14.7, 13.5, 13.9, 13.3, 12.1, 11.5, and 10.7 14C ka correlate well with the millennial-scale events in the Santa Barbara Basin and the Arabian Sea, i.e. a relationship between EAM and El Niño/Southern Oscillation systems. The abrupt increases in summer monsoon imply enhanced heat transport from low-latitude sea area to the midlatitude/high-latitude land area. The phase relationship between events of EAM and ice sheet may reflect a faster EAM response and a slower ice sheet response to the insolation change. A far-reaching conclusion is that the EAM might have triggered the Northern Hemisphere deglaciation.

Pollen analysis of ODP Hole 117-720A (Appendix B)

Pollen analytical studies of the ODP Site 720 cores revealed the wide development of the coniferous forest, which mainly composed by Pinus, Picea, Abies and Cedrus deodara, along the Indus river since the early Pleistocene.

María Minellono (coord.), Almafuerte. Poesía completa. Edición crítica. Córdoba, Alción Editora / La Plata, Facultad de Humanidades y Ciencias de la Educación, Colección Archivos, 2011, 725 páginas

Fil: Pastormerlo, Sergio Carlos. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Age, annual coral growth rates and stable isotopes of coral sample Ningaloo

116-year record of coral skeletal delta18O is presented from a colony of Porites lutea from Ningaloo Reef, western Australia. Interannual variability of sea-surface temperatures (SST) inferred from skeletal delta18O is dominated by a 9.5-year period, and may constitute a characteristic signal of the Leeuwin Current. On long-terms coral skeletal delta18O indicates a near-continuous increase of SST at Ningaloo Reef over one century. The skeletal delta18O time series was checked for the presence of seasonal cooling events resulting from major volcanic eruptions. An ~1 °C cooling is evident following the eruption of Pinatubo in 1991, which reproduces the results of previous investigations. However, only weak or no signals can be related to the eruptions of Krakatau (1883) and Agung (1963).

María Minellono (coord.), Almafuerte. Poesía completa. Edición crítica. Córdoba, Alción Editora / La Plata, Facultad de Humanidades y Ciencias de la Educación, Colección Archivos, 2011, 725 páginas

Fil: Pastormerlo, Sergio Carlos. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.