scholarly journals Paleomagnetism of the Santa Fé Group, central Brazil: Implications for the late Paleozoic apparent polar wander path for South America

2009 ◽  
Vol 114 (B2) ◽  
Author(s):  
Daniele Brandt ◽  
Marcia Ernesto ◽  
Antonio Carlos Rocha-Campos ◽  
Paulo Roberto dos Santos
Keyword(s):  
South America ◽  
Late Paleozoic ◽  
Santa Fe ◽  
Polar Wander ◽  
Central Brazil ◽  
Apparent Polar Wander Path

scholarly journals Gondwana’s Apparent Polar Wander Path during the Permian-new insights from South America

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Renata N. Tomezzoli ◽  
Hugo Tickyj ◽  
Augusto E. Rapalini ◽  
Leandro C. Gallo ◽  
Ernesto O. Cristallini ◽  
...  
Keyword(s):  
South America ◽  
Polar Wander ◽  
Apparent Polar Wander Path

scholarly journals Dry and Wet Climate Periods over Eastern South America: Identification and Characterization through the SPEI Index

Atmosphere ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 155
Author(s):  
Anita Drumond ◽  
Milica Stojanovic ◽  
Raquel Nieto ◽  
Luis Gimeno ◽  
Margarida L. R. Liberato ◽  
...  
Keyword(s):  
South America ◽  
Potential Evapotranspiration ◽  
Monthly Precipitation ◽  
Economic Activities ◽  
Central Brazil ◽  
Moisture Analysis ◽  
Dry Conditions ◽  
Wet Climate ◽  
Climate Events

A large part of the population and the economic activities of South America are located in eastern regions of the continent, where extreme climate events are a recurrent phenomenon. This study identifies and characterizes the dry and wet climate periods at domain-scale occurring over the eastern South America (ESA) during 1980–2018 through the multi-scalar Standardized Precipitation–Evapotranspiration Index (SPEI). For this study, the spatial extent of ESA was defined according to a Lagrangian approach for moisture analysis. It consists of the major continental sink of the moisture transported from the South Atlantic Ocean throughout the year, comprising the Amazonia, central Brazil, and the southeastern continental areas. The SPEI for 1, 3, 6, and 12 months of accumulation was calculated using monthly precipitation and potential evapotranspiration time series averaged on ESA. The analysis of the climate periods followed two different approaches: classification of the monthly SPEI values as mild, moderate, severe, and extreme; the computation of the events and their respective parameters (duration, severity, intensity, and peak). The results indicate that wet periods prevailed in the 1990s and 2000s, while dry conditions predominated in the 2010s, when the longest and more severe dry events have been identified at the four scales.

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