GPR and inductive electromagnetic surveys applied in three coastal sambaqui (shell mounds) archaeological sites in Santa Catarina state, South Brazil

Rodrigues, Selma Isabel; Porsani, Jorge Luís; Santos, Vinicius Rocha; DeBlasis, Paulo; Giannini, Paulo César Fonseca

doi:10.1016/j.jas.2009.05.013

Cited by 39 publications

(21 citation statements)

References 19 publications

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“…According to field observations, this rectangular-shaped anomaly is related to a previous excavation done in the studied area that had to be halted due to time constrains, and was resumed in the following year. According to Conyers [4] GPR profiles with high amplitude reflectors are more likely to be related to archaeological targets, but may also be associated with buried natural targets, for example, silicified tree roots [16], bedrock [17], among others. Note The analysis of the anomaly A1 (Figure 3 and Figure 4) showed that it is the same target and is therefore suitable for archaeological excavations.…”

Section: Results Interpretationmentioning

confidence: 99%

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GPR Tomography as Support for an Archaeological Excavation in Aripuanã Indigenous Cemetery, Amazon Region, Brazil

Porsani¹,

Kipnis²,

Santos³

et al. 2017

IJG

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We present here a series of Ground Penetrating Radar (GPR) survey carried out in different areas of the Dardanelos 1 archaeological site in order to generate information about subsurface anomalies associated with archaeological material that could be use in decision making within the environmental licensing process of the Dardanelos Hydroelectric Power Plant, located near of the Aripuanã city, Mato Grosso State, northwest region of Brazil. GPR surveys with 200 MHz antenna were carried out in two blocks aiming to locate archaeological resources and features. The analysis of GPR 2D and 3D results allowed detecting anomalous regions characterized by hyperbolic reflections, shallow elongated continuous targets with high amplitudes, as well as sub-horizontal reflectors. Microwave tomography allowed estimating the geometry of the GPR anomalies sources. Excavations were done by archaeologists at the locations where hyperbolic anomalies were found, revealing interesting structures related to urns in the middle of a rich in organic matter consisting of black and ceramic materials up to about 1 m deep. The first sub-horizontal reflector at approximately 1 m depth is related to the base of the black soil layer rich in organic matter and the second sub-horizontal reflector between 2 and 3 m deep suggests a lithological change or may be related to presence of the water table. The continuous elongated shallow targets observed in the depth slices are related to tree roots in the middle of the archaeological strata. The GPR results guided archaeological excavations, reduced the time and costs involved in research, and contributed to the preservation of Brazilian historical heritage.

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Section: Results Interpretationmentioning

confidence: 99%

“…Ten years later, Cezar et al [14] also employed GPR to search for ceramic materials from archaeological sites in Rio de Janeiro State. Other geophysical researches in archaeological investigations include fluvial sambaquis [15], coastal sambaquis [16], shelter on rock [17], archaeology in urban areas [18].…”

Section: Introductionmentioning

confidence: 99%

GPR Tomography as Support for an Archaeological Excavation in Aripuanã Indigenous Cemetery, Amazon Region, Brazil

Porsani¹,

Kipnis²,

Santos³

et al. 2017

IJG

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show abstract

“…Mais recentemente, Aragão et al (2010) realizaram um projeto de geofísica comparando os métodos de magnetometria, georadar e radiação gama em uma área destinada à mineração. Rodrigues et al ( 2009) realizaram levantamentos geofísicos com os métodos GPR e eletromagnético indutivo em três sítios arqueológicos de sambaquis litorâneos na região de Santa Catarina, Sul do Brasil. Os resultados permitiram orientar as escavações, proporcionando encontrar uma fogueira, concentrações de materiais cerâmicos e um enterramento humano.…”

Section: Geofísica Arqueológicaunclassified

Geofísica arqueológica no ambiente da Arqueologia Urbana

Allen

Porsani

Poluha

2017

rsab

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A reforma e a requalificação de centros históricos -como construção, saneamento, pavimentação, entre outras -requerem que uma pesquisa arqueológica seja realizada antes de qualquer intervenção. Nesse contexto, busca-se um equilíbrio entre o que pode sofrer impactos negativos e o que deve ser estudado e preservado arqueologicamente, sempre buscando atender à necessidade do melhoramento dos locais públicos. O Largo da Igreja Nosso Senhor do Bonfim, Marechal Deodoro, Alagoas, ofereceu oportunidade de empregar o método geofísico GPR (Ground Penetrating Radar ou Georadar) para orientar escavações, identificar áreas para preservação e informar engenheiros civis sobre possíveis desafios para a execução do projeto civil. Os resultados foram interessantes, proporcionando um bom argumento para a incorporação de metodologias geofísicas em projetos de Arqueologia Urbana similares. Palavras-chave: GPR-Ground Penetrating Radar; Geofísica arqueológica; Arqueologia Urbana. ABSTRACTBrazilian urban renewal projects in historic districts require that archaeological research be conducted prior to any intervention, such as excavations for sanitation, construction, pavement, among others. In such a context, a balance must be struck between what might suffer impacts and what should be studied and preserved archaeologically, while attending the need to improve these public spaces. The Largo da Igreja Nosso Senhor do Bonfim, a public square dating to the early 17th century, offered the opportunity to use Ground Penetrating Radar to guide excavations, identify areas for preservation and to inform civil engineers of possible challenges for the project generally. The results were mixed, but provide a strong argument for the incorporation of geophysical methods in similar projects.

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“…Today, the use of this method faded away for the less invasive and more efficient geophysical tools such as ground penetrating radar (GPR). Recent years have witnessed an increasing use of GPR in different archaeological applications all over the world [Watters, 2004] [9,[13][14][15][16]. Ground penetrating radar provides high-resolution threedimensional images in reasonable time but at relatively high-cost.…”

Section: Introductionmentioning

confidence: 99%

Archaeology and Geophysics: Invincible Couple

Rashed¹

2017

AAOA

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Today, there is almost no new archaeological discovery in which geophysical investigation tools do not play a key role. In fact, looking onto the past century, one could argue that geophysics, in a way, has rescued archaeology and revived it from its old-style techniques involving hard labor and timeconsuming digging and trenching. Today, thanks to geophysics, archaeology utilizes state-of the-art technologies, takes advantage of the most recent data management and processing techniques, and benefits from the latest image processing protocols. However, archaeology is not the only beneficiary from this successful coupling between archaeology and geophysics. Many of the advances in shallow and high-resolution geophysical techniques as well as data processing and interpretation capabilities can be indirectly attributed to the needs, demands and feedbacks of archaeologists. This successful exchange of benefits has resulted in a new scientific term that is commonly used nowadays; that is Archaeogeophysics or Archaeological Geophysics.

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GPR and inductive electromagnetic surveys applied in three coastal sambaqui (shell mounds) archaeological sites in Santa Catarina state, South Brazil

Cited by 39 publications

References 19 publications

GPR Tomography as Support for an Archaeological Excavation in Aripuanã Indigenous Cemetery, Amazon Region, Brazil

GPR Tomography as Support for an Archaeological Excavation in Aripuanã Indigenous Cemetery, Amazon Region, Brazil

Geofísica arqueológica no ambiente da Arqueologia Urbana

Archaeology and Geophysics: Invincible Couple

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GPR and inductive electromagnetic surveys applied in three coastal sambaqui (shell mounds) archaeological sites in Santa Catarina state, South Brazil

Cited by 39 publications

References 19 publications

GPR Tomography as Support for an Archaeological Excavation in Aripuan&#227; Indigenous Cemetery, Amazon Region, Brazil

GPR Tomography as Support for an Archaeological Excavation in Aripuan&#227; Indigenous Cemetery, Amazon Region, Brazil

Geofísica arqueológica no ambiente da Arqueologia Urbana

Archaeology and Geophysics: Invincible Couple

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Product

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GPR Tomography as Support for an Archaeological Excavation in Aripuanã Indigenous Cemetery, Amazon Region, Brazil

GPR Tomography as Support for an Archaeological Excavation in Aripuanã Indigenous Cemetery, Amazon Region, Brazil