Níveis de Pu-238 e Pu- 239+240 em amostras de sedimento marinho da costa sul do Brasil

Figueira, Rubens César Lopes; Furtado, Valdenir Veronese; Tessler, Moysés Gonsalez; Cunha, I. I. L.

doi:10.1590/s1413-77392003000100006

Cited by 1 publication

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main methods to evaluate radionuclides on the studies mentioned above consisted on gamma-ray spectrometry (Saito et al, 2001;Figueira et al, 2006), alpha spectrometry (Figueira et al, 2003;Figueira et al, 2006) and ICP-OES (inductively coupled plasma-optical emission spectrometry) technique (Figueira et al, 2016). None of the artificial radionuclides measured present contamination levels (Santos et al, 2008(Santos et al, ) but, indeed, 1963 Cs is being used as an independent tracer for recent sedimentary processes (Ferreira et al, 2016).…”

Section: Artificial Radionuclidesmentioning

confidence: 99%

“…As a result of the global fallout, the coastal sediments off São Paulo exhibit measurable levels of artificial radionuclides (Saito et al, 2001;Figueira et al, 2003;Figueira et al, 2006;Ferreira et al, 2016). The main methods to evaluate radionuclides on the studies mentioned above consisted on gamma-ray spectrometry (Saito et al, 2001;Figueira et al, 2006), alpha spectrometry (Figueira et al, 2003;Figueira et al, 2006) and ICP-OES (inductively coupled plasma-optical emission spectrometry) technique (Figueira et al, 2016).…”

Section: Artificial Radionuclidesmentioning

confidence: 99%

See 1 more Smart Citation

From sambaquis (shell mounds) to plastic debris: a summary of the geological imprint of human occupation in the coast of São Paulo (Southeast Brazil)

Affonso

Mahiques

Ferreira

et al. 2018

ABEQUA

View full text Add to dashboard Cite

In this work, we present a brief revision of the geological evidence of human activities in the coast of São Paulo (Southeast Brazil), from pre-historical times to the present. We analyze case studies in different sectors of the coast, identifying the main historical causes that resulted in environmental changes with their consequent imprint in the sedimentary column. There was a south-to-north trend in the occupation at the colonization period (1500 onwards), essentially determined by differences in the geomorphology of the area. Finally, the accumulation of artificial radionuclides and plastic debris in the sediments is discussed. Keywords: Human occupation; coastline; SE Brazil ResumoNeste trabalho, apresentamos uma breve revisão das evidências geológicas das atividades humanas no litoral de São Paulo (Sudeste do Brasil), desde os tempos pré-históricos até o presente. Analisamos estudos de caso em diferentes setores da costa, identificando as principais causas históricas que resultaram em mudanças ambientais com sua consequente impressão na coluna sedimentar. Havia uma tendência sul-norte na ocupação no período de colonização (1500 em diante), essencialmente determinada por diferenças na geomorfologia da área. Finalmente, o acúmulo de radionuclídeos artificiais e detritos plásticos nos sedimentos é discutido. Palavras-chave: Ocupação humana; litoral; SE do Brasil IntroductionThe definition of the beginning of the Anthropocene in coastal areas is undoubtedly chronologically much younger than the human occupation of the coasts itself (Menzel, 1959;Kaplan, 1980;Stringer, 2000). Actually, the definition of the base of this new epoch is, somehow, still a matter of debate, since the geological/ geochemical evidence of the end of the Holocene can be interpreted in different ways (Steffen et al., 2007;Leorri et al., 2014;Irabien et al., 2015;Zalasiewicz et al., 2015;Waters et al., 2016). It is worth observing that in different coastal and marine areas the evidence goes back to pre-Industrial ages (Crutzen and Steffen, 2003;Martins et al., 2013;Leorri et al., 2014;Irabien et al., 2015).In this paper, we present a brief review of the geological imprint of the human occupation of the coast of São Paulo (Southeast Brazil), an area of a relatively recent historical occupation, caused by different economic activities, but with geological evidence of pre-Columbian settlings. The main aim of this work is to recognize when, why and how the geological records show evidence of the beginning of the Anthropocene in this coastal area. Area of StudyThe area of study corresponds to the coast of São Paulo, a part of the arc-shaped section of the Brazilian margin known as São Paulo Bight (Zembruscki, 1979) (figure 1). This coastal sector has been divided into different forms. According to Muehe (1998), it is divided into two different compartments, the Northern Crystalline Scarps Littoral and the Coastal Plains and Estuaries Littoral, the difference between them being essentially related to the position of the Serra do Mar mou...

show abstract