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H. Evangelista D. Godiva A. Sifeddine Z. M. A. N. Leão N. R. Rigozo B. Segal T. Ambrizzi M. Kampel R. K. P. Kikuchi F. Le Cornec 《Climate Dynamics》2007,29(7-8):869-880
Physical and biological changes in the marine environment, induced by oceanic-atmospheric processes, can be imprinted in massive coral skeletons. Herein, we present an evidence of potential El Niño impacts at the Southwestern South Atlantic Ocean (SWSA) inferred from the sclerochronology of the reef coral Favia leptophylla. The application of spectral analysis (wavelet decomposition and the iterative regression) to coral growth length and to meteorological-oceanographic parameters (air temperature, sea surface temperature and precipitation) as well as to Southern Oscillation Index (SOI) and solar irradiation indicated a major significant inverse relationship between SOI and coral growth length at the 4–8 years frequency band. We propose here that coral growth length from the SWSA could be affected by El Niño Southern Oscillation (ENSO) events through an “atmospheric bridge”, in contrast to its direct effect at the Pacific Ocean, related to the increase in sea surface temperature. 相似文献
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Hoffimann Jlio Augusto Jos Resende Lucas Mathias Marlon Mazzinghy Douglas Bianchetti Matheus Mendes Mnica Souza Thiago Andrade Vitor Domingues Tarcsio Silva Wesley Silva Ruberlan Couto Danielly Fonseca Elisabeth Gonalves Keila 《Mathematical Geosciences》2022,54(7):1227-1253
Mathematical Geosciences - In mine planning, geospatial estimates of variables such as comminution indexes and metallurgical recovery are extremely important to locate blocks for which the energy... 相似文献
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Danielly Godiva Heitor Evangelista Milton Kampel Marcus Vinicius Licinio Casimiro Munita 《Estuarine, Coastal and Shelf Science》2010
Coral and reef environments in shallow waters are negatively affected by human activities in several coastal areas worldwide. It has been demonstrated that sediment influx and macronutrient discharges induce decline of coral population structure and diversity. Therefore, efforts to quantify sediment flux, sources and the biological response to sedimentation were conducted by several marine researchers. Herein, we investigated the case study of Armação dos Búzios/Brazil/Western South Atlantic, where coral colonies (mostly Siderastrea stellata) are under stress due to sediment apportionment as a consequence of regional human occupation. Classification of potential sediment source regions was based on a high-resolution aerogammaspectrometry survey for 232Th, 238U and 40K in main land near shore, used as primarily tool, in combination with sediment geochemistry. This approach allowed distinguishing three hydrographic basins (Macaé river basin, São João river basin and Una river basin) as potential sources. Hierarchical cluster analysis applied to the set of parameters identified the Macaé River as the most probable sediment contributor to the coralline site. 相似文献
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