High resolution 3D ERT to help GPR data interpretation for researching archaeological items in a geologically complex subsurface

Negri, Sergio; Leucci, Giovanni; Mazzone, Fiorella

doi:10.1016/j.jappgeo.2008.06.004

Cited by 56 publications

(30 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For this reasons this approach for 3D geoelectrical surveying is widespread in geophysical practice (Negri et al, 2008;Drahor et al, 2008;Aizebeokhai et al, 2010). In particular this 3D approach has been used into mapping the structure of different waste disposal sites (Dahlin et al, 2002;Chambers et al, 2006Chambers et al, , 2012Soupios et al, 2007b).…”

Section: Introductionmentioning

confidence: 99%

3D electrical resistivity tomography technique for the investigation of a construction and demolition waste landfill site

et al. 2015

View full text Add to dashboard Cite

We present the practical application of a 3D electrical resistivity tomography (ERT) geophysical survey conducted in order to calculate the geometrical features and general structure of a construction and demolition waste layer in an old unregulated landfill prior to redevelopment. As traditional geological/geotechnical investigations comprised of cone penetration tests (CPT) failed to provide reliable results, primarily due to the nature of the underlying waste, a geophysical investigation was commissioned and found to be very effective in providing useful and accurate information to the project's environmental and engineering team. The ERT survey data were collected in parallel equidistant lines and were subsequently merged and inverted as a single 3D dataset. The processed data depicted clearly the interface between the resistive construction waste and the conductive undisturbed host clay layer ranging at depths between 3 and 11 m. As a result of this successful geophysical investigation the total volume of the solid waste materials was calculated to be about 32500 m 3 . Following the complete removal of the waste it became evident that the ERT geophysical survey results were particularly accurate. As a result, the reclamation constructor was able to carefully plan the required resources for excavating, moving and disposing of the waste. Interpreted ERT data not only defined the thickness of the debris layer and the total volume with a deviation of less than 10%, but also revealed the inner structure of the solid waste layer.

show abstract

Section: Introductionmentioning

confidence: 99%

3D electrical resistivity tomography technique for the investigation of a construction and demolition waste landfill site

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Of particular usage of GPR is for geologic characterization of the subsurface materials as well as for mapping of nongeologic objects. The technique is successfully found to be applicable in stratigraphic studies of sedimentary formation (Bristow and Jol, 2003), outlining the foundation of building and other engineering structures (Abbas et al, 2009), archeological investigation (Oveisy Moakhar, 2008Negri et al, 2008), mineral exploration (Gómez-Ortiz et al, 2007;El Assel et al, 2011;Francke, 2012), location of water table, and characterization of subsurface contamination (de Menezes Travassos and de Tarso Luiz Menezes, 2004;Hamzah et al, 2009;Win et al, 2011), geomorphic studies and surface subsidence (Poole et al, 2002;Gómez-Ortiz and Martín-Crespo, 2012), and as well pipe and underground objects inspection (Mohammadi Vizheh and Kamkar Rouhani, 2013).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Geophysical investigation of underground water content zones using electrical resistivity tomography and ground penetrating radar: A case study in Hesarak-Karaj, Iran

Afshar

Abedi

Norouzi

et al. 2015

Engineering Geology

View full text Add to dashboard Cite

“…Daniels et al (1997) generically described a 3D GPR survey as an acquisition of parallel GPR lines separated by distances not much greater than half the wavelength of the transmitted EM signal. Even today, in most surveys considered as 3D, the GPR profiles are acquired along parallel lines in a single direction (e.g., Negri et al, 2008;Kadioglu, 2008;Hermozilha et al, 2010). However, a problem related to this type of survey, also called pseudo-3D survey (Novo et al, 2008), is the presence of reflectors excessively stretched orthogonally to the GPR lines due to subsampling in this direction (aliasing).…”

Section: D Gpr Acquisitionmentioning

confidence: 99%

Ground-Penetrating Radar Imaging Techniques Applied in 3d Environment: Example in Inactive Dunes

Castro¹,

Júnior²,

Teixeira³

et al. 2014

Rev. Bras. Geof.

View full text Add to dashboard Cite

ABSTRACT. The increased use of Ground-Penetrating Radar (GPR) in several areas of knowledge has introduced an impressive number of new methodological procedures, adapted from other areas, such as seismic reflection, or developed specifically for the GPR. A summary of the advances in acquisition, processing and interpretation of GPR data is presented in this paper. Some of the techniques were applied to a 3D GPR survey in a study area, whose substrate is composed by sedimentary sequences of paleodunes or inactive dunes, located in the outer courtyard of the Department of Geology (DEGEO) of the Universidade Federal do Rio Grande do Norte (UFRN), Brazil. A GPR cube was generated from a regular grid of GPR in-lines and cross-lines, spaced 0.5 m. A filtering routine was applied. For each processing step, the changes in the signal content in the time and frequency domains were analyzed. Common midpoint (CMP) sections and hyperbolas of buried pipes constrained the construction of a subsurface velocity model, allowing the migration and time/depth conversion of the radargrams. Analysis of instantaneous, amplitude, and geometrical attributes and concepts of seismic stratigraphy were applied in the migrated GPR cube to define five stratigraphic sequences and their paleo-reliefs.Based on the radar facies internal geometry, some considerations were established about the depositional environment of the surveyed area.Keywords: GPR, 3D imaging, processing, attribute analysis. RESUMO.A expansão do uso do GPR nas mais diversasáreas do conhecimento tem contribuído para o desenvolvimento de novos procedimentos metodológicos, decorrentes da adaptação de outros métodos geofísicos, principalmente a sísmica de reflexão, ou desenvolvidos especialmente para o GPR. Uma síntese dos avanços nas etapas de aquisição, processamento e interpretaçãoé descrita no presente artigo. Algumas das técnicas analisadas foram aplicadas em dados GPR obtidos em um levantamento realizado segundo uma malha retangular, em umaárea de estudo situada no interior do campus da Universidade Federal do Rio Grande do Norte (UFRN).O substrato imageadoé constituído por camadas de sedimentos arenosos siliciclásticos, de origem eólica costeira, depositados sobre rochas do Grupo Barreiras.Um volume GPR foi gerado a partir de uma malha regular de linhas longitudinais e transversais, espaçadas de 0,5 m. Uma rotina de filtragem dos dados GPRé proposta, sendo as alterações no conteúdo do sinal eletromagnético (EM) analisadas nos domínios do tempo e frequência para cada etapa do processamento. Seções de ponto médio comum (CMP) e hipérboles de tubulações soterradas permitiram a confecção de um modelo de velocidades da subsuperfície e a migração e conversão tempo/profundidade dos radargramas. Análise de atributos instantâneos, de amplitude e geométricos, além de técnicas de interpretação sismoestratigráficas foram aplicadas no volume GPR migrado para definir cinco sequências estratigráficas e seus paleorelevos. Com base nas geometrias internas das radarfácies, foram tecidas algum...

show abstract

High resolution 3D ERT to help GPR data interpretation for researching archaeological items in a geologically complex subsurface

Cited by 56 publications

References 23 publications

3D electrical resistivity tomography technique for the investigation of a construction and demolition waste landfill site

3D electrical resistivity tomography technique for the investigation of a construction and demolition waste landfill site

Geophysical investigation of underground water content zones using electrical resistivity tomography and ground penetrating radar: A case study in Hesarak-Karaj, Iran

Ground-Penetrating Radar Imaging Techniques Applied in 3d Environment: Example in Inactive Dunes

Contact Info

Product

Resources

About