In search of plumes: A GPR odyssey in Brazil

The use of GPR and VES in delineating a contamination plume in a landfill site: a case study in SE Brazil

“…From 210 m to the end of the profile, the plume reappears shallower, i.e., 10 m. This is a reflector typically found in a plume of contaminants related to the waste disposal site. Similar results of mapping contaminants as a shadow zone in GPR profiles have been reported by Davis and Annan (1989), Scaife and Annan (1991), Annan (1992), Lanz et al (1994), Ulrych et al (1994), Green et al (1999), Sauck (2000), Sauck et al (1998), Atekwana et al (2000) and Orlando and Marchesi (2001). Fig.…”

“…Among those geophysical methods, electrical and electromagnetic methods have been found very suitable for such kind of environmental studies, due to the conductive nature of most contaminants. The use of electric and electromagnetic methods applied to environmental studies is well documented (Ulrych et al, 1994;Lanz et al, 1994;Sauck, 2000;Atekwana et al, 2000;Orlando and Marchesi, 2001).…”

Integrated Geophysical Survey In A Refuse Dumpsite Of Aarada, Ogbomoso, Southwestern Nigeria.

“…The study area which was presumed to have existed for over fifteen years covers an area of about 300 to 500 square meters with the refuse content consisting of various kinds of materials like metallic, organic and non-biodegradable materials. Among the available surface geophysical methods, electrical resistivity and electromagnetic methods have been found very suitable due to the conductive nature of most contaminants (Ulrych et al 1994;Lanz et al 1994 Bernstone et al 2000) and also in waste disposal site investigation. Adagunodo and Sunmonu (2012) have used Vertical Electrical Sounding technique to estimate the overburden thickness of a Basement complex.…”

Caracterização geofísica de alvos rasos com aplicações no planejamento urbano e meio ambiente: estudo sobre o sítio controlado do IAG/USP

“…Entretanto, não há registros na literatura. Os estudos sistemáticos com o GPR foram realizados pelo Centro de Pesquisas da Petrobrás (PORSANI et al, 1994a(PORSANI et al, , 1994bRODRIGUES, 1995aRODRIGUES, , 1995bRODRIGUES;PORSANI, , 1997, seguidos pelas Universidades Federais da Bahia (ULRYCH et al, 1994) e do Pará (SAUCK et al, 1995a(SAUCK et al, , 1995b. Atualmente, o GPR é estudado e empregado por várias Instituições de Pesquisa e universidades brasileiras, dentre as quais podemos citar: IAG/USP (BORGES, 2002;SOUZA JR, 2002;MOUTINHO, 2003;RODRIGUES, 2004;OLIVEIRA, 2006;LIMA, 2006;ORTEGA, 2007), Unesp (PORSANI, 1999;GANDOLFO, 1999;PRADO, 2000), IGc/USP (DEHAINE, 2001;AQUINO, 2000), IPT (SOUZA, et al, 2001) Tal meio é denominado de meio dielétrico de baixa perda (lossy dieletric medium).…”