Reconstructing the Roman Site “Aquis Querquennis” (Bande, Spain) from GPR, T-LiDAR and IRT Data Fusion

Puente, Iván; Solla, Mercedes; Lagüela, S.; Sanjurjo-Pinto, Javier

doi:10.3390/rs10030379

Cited by 29 publications

(21 citation statements)

References 33 publications

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“…Its occupation dates from the last quarter of the first to the middle of the second centuries. The encampment was likely built to monitor the construction of the roads communicating the cities of Bracara Augusta (Braga, Portugal) and Asturica Augusta (Astorga, Spain) (Puente et al, 2018). As it can be observed in Figure 5, the settlement presents a classic layout with a rectangular shape and two main orthogonal paths and the area of study occupies 3 hectares.…”

Section: Case Study 1 the Roman Site "Aquis Querquennis" (Bande Spain)mentioning

confidence: 99%

Scan Planning Optimization for Outdoor Archaeological Sites

Díaz-Vilariño

Frías

Previtali

et al. 2019

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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<p><strong>Abstract.</strong> The protection and management of archaeological sites require from a deep documentation and analysis, and although hand measuring and documentation is the cheapest way for collecting data, laser scanner has been gradually integrated for the geometrical data capture since point clouds have a high quality in terms of accuracy, precision and resolution. Although acquisition with laser scanner is considered a quick process, scan planning is of high relevance when considering outdoor archaeological sites because of their large size and complexity. In this paper, an automatic methodology to optimize the number and position of scans in order to obtain a point cloud of high quality in terms of data completeness is proposed. The aim of the methodology is to minimize the number of scans, minimizing at the same time the estimated surveying time and the amount of repetitive acquired data. Scan candidates are generated by using a grid-based and a triangulation-based distribution, and results show a faster analysis when triangulation is implemented. The methodology is tested into two real case studies from Italy and Spain, showing the applicability of scan planning in archaeological sites.</p>

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Section: Case Study 1 the Roman Site "Aquis Querquennis" (Bande Spain)mentioning

confidence: 99%

Scan Planning Optimization for Outdoor Archaeological Sites

Díaz-Vilariño

Frías

Previtali

et al. 2019

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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“…The Aquis Querquennis complex is located in Bande (Ourense, Galicia, Spain) on the banks of River Limia (Figure 2). Historical records point out that the complex was built during Vespasiano's reign (69-79 Before Cristo) [35]. After that, the place was occupied by a roman cavalry and infantry unit until around half of the following century.…”

Section: The Aquis Querquennis Complexmentioning

confidence: 99%

Tourism Industry’s Vulnerability upon Risk of Flooding: The Aquis Querquennis Complex

2019

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Thermal baths are the main touristic attraction of Ourense (Galicia, Spain). Therefore, protecting and potentializing the resources related to this type of tourism is essential for the province. Most of these resources are located by the banks or nearby rivers, which makes them particularly susceptible to flooding, a very common phenomenon throughout the province. In this context, vulnerability analysis, and particularly flooding damage evaluation, are of utmost importance to this area. Considering this scenario, the present study consists of a preliminary analysis of a historical-heritage tourism resource’s vulnerability to flooding. To this end, the study examines the visitation patterns to the Aquis Querquennis complex (Bande, Ourense, Spain), which is located by the banks of the As Conchas reservoir, and the water levels of said reservoir. The complex is a touristic resource with great historical value. Apart from the thermal baths, it encompasses a military campsite and a hostel. The Roman complex attracts a constant tourist flow, which has a positive socioeconomic impact to the area. The analysis showed that there is a correlation between the number of visits and flooding patterns. Increased levels of water are a hinderance for those willing to access the attraction. Consequently, there is a negative relationship between water level and number of visitors.

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“…It should be noted that an XZ image (typically called radargram) is obtained as a result of the GPR analysis. The values of the radargram represent the amplitude values of the different reflected pulses, which are measured as the transmitting antenna moves along the surface under study [ 21 ]. Thus, the X axis represents the distance (meters) of each trace (position of each pulse received) and the Z axis represents the two-way travel time of the radar pulses through the media.…”

Section: Introductionmentioning

confidence: 99%

IRT and GPR Techniques for Moisture Detection and Characterisation in Buildings

Garrido

Solla

Lagüela

et al. 2020

Sensors

Self Cite

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The integrity, comfort, and energy demand of a building can be negatively affected by the presence of moisture in its walls. Therefore, it is essential to identify and characterise this building pathology with the most appropriate technologies to perform the required prevention and maintenance tasks. This paper proposes the joint application of InfraRed Thermography (IRT) and Ground-Penetrating Radar (GPR) for the detection and classification of moisture in interior walls of a building according to its severity level. The IRT method is based on the study of the temperature distribution of the thermal images acquired without an application of artificial thermal excitation for the detection of superficial moisture (less than 15 mm deep in plaster with passive IRT). Additionally, in order to characterise the level of moisture severity, the Evaporative Thermal Index (ETI) was obtained for each of the moisture areas. As for GPR, with measuring capacity from 10 mm up to 30 cm depth with a 2300 MHz antenna, several algorithms were developed based on the amplitude and spectrum of the received signals for the detection and classification of moisture through the inner layers of the wall. In this work, the complementarity of both methods has proven to be an effective approach to investigate both superficial and internal moisture and their severity. Specifically, IRT allowed estimating superficial water movement, whereas GPR allowed detecting points of internal water accumulation. Thus, through the combination of both techniques, it was possible to provide an interpretation of the water displacement from the exterior surface to the interior surface of the wall, and to give a relative depth of water inside the wall. Therefore, it was concluded that more information and greater reliability can be gained by using complementary IRT-GPR, showing the benefits of combining both techniques in the building sector.

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Reconstructing the Roman Site “Aquis Querquennis” (Bande, Spain) from GPR, T-LiDAR and IRT Data Fusion

Cited by 29 publications

References 33 publications

Scan Planning Optimization for Outdoor Archaeological Sites

Scan Planning Optimization for Outdoor Archaeological Sites

Tourism Industry’s Vulnerability upon Risk of Flooding: The Aquis Querquennis Complex

IRT and GPR Techniques for Moisture Detection and Characterisation in Buildings

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