878 resultados para Little Kennebec Bay
Resumo:
The Indian Summer Monsoon (ISM) is a major global climatic phenomenon. Long-term precipitation proxy records of the ISM, however, are often fragmented and discontinuous, impeding an estimation of the magnitude of precipitation variability from the Last Glacial to the present. To improve our understanding of past ISM variability, we provide a continuous reconstructed record of precipitation and continental vegetation changes from the lower Ganges-Brahmaputra-Meghna catchment and the Indo-Burman ranges over the last 18,000 years (18 ka). The records derive from a marine sediment core from the northern Bay of Bengal (NBoB), and are complemented by numerical model results of spatial moisture transport and precipitation distribution over the Bengal region. The isotopic composition of terrestrial plant waxes (dD and d13C of n-alkanes) are compared to results from an isotope-enabled general atmospheric circulation model (IsoCAM) for selected time slices (pre-industrial, mid-Holocene and Heinrich Stadial 1). Comparison of proxy and model results indicate that past changes in the dD of precipitation and plant waxes were mainly driven by the amount effect, and strongly influenced by ISM rainfall. Maximum precipitation is detected for the Early Holocene Climatic Optimum (EHCO; 10.5-6 ka BP), whereas minimum precipitation occurred during the Heinrich Stadial 1 (HS1; 16.9-15.4 ka BP). The IsoCAM model results support the hypothesis of a constant moisture source (i.e. the NBoB) throughout the study period. Relative to the pre-industrial period the model reconstructions show 20% more rain during the mid-Holocene (6 ka BP) and 20% less rain during the Heinrich Stadial 1 (HS1), respectively. A shift from C4-plant dominated ecosystems during the glacial to subsequent C3/C4-mixed ones during the interglacial took place. Vegetation changes were predominantly driven by precipitation variability, as evidenced by the significant correlation between the dD and d13C alkane records. When compared to other records across the ISM domain, precipitation and vegetation changes inferred from our records and the numerical model results provide evidence for a coherent regional variability of the ISM from the Last Glacial to the present.
Resumo:
This dataset consists of average water depth, average current velocity and direction and roughness lengths calculated from the spatially-averaged velocity profiles collected with an ADCP along a transect in the Jade Bay in 2008.
Resumo:
Algunos escritores exiliados a partir de la última dictadura militar argentina (1976-1983) tradujeron ellos mismos sus textos para publicarlos en el país de exilio. Un ejemplo es el de Alicia Partnoy, autora de The Little School. Tales of Disappearance & Survival in Argentina, quien habiendo escrito un testimonio en español sobre su paso por el campo de concentración La Escuelita, ubicado en Bahía Blanca, se dedicó a traducirlo al inglés para su publicación en Estados Unidos en 1986. Sus numerosas ediciones, primero en el extranjero y más tarde en Argentina, lo ubican entre una de las obras más importantes de la narrativa testimonial concentracionaria argentina. Una forma de abordarlo reside en el análisis sobre el proceso y el resultado de la autotraducción, lo cual permite aportar elementos de reflexión acerca de la necesidad de los supervivientes exiliados de dar a conocer su experiencia en el exilio, algo que sobrepasa, incluso, las barreras lingüísticas