Synergistic Application of Optical and Radar Data for Archaeological Exploration in the Talakadu Region, Karnataka

Rajani, Mandyam B; Bhattacharya, S.; Rajawat, A. S.

doi:10.1007/s12524-011-0102-6

Cited by 6 publications

(4 citation statements)

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“…In addition to the use of FCCs and SAR data, this study was also supported by the digital elevation models generated using SRTM DEM. SAR imagery also revealed a palaeochannel adjacent to the site Talakadu near Mysuru 20 . Field observations showed agricultural land along this channel, which gets flooded during heavy rains (Figure 3).…”

Section: Indirect Signaturesmentioning

confidence: 99%

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The Science behind Archaeological Signatures from Space

Navalgund

Rajani

2017

Current Science

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Archaeology has traditionally focused on studying historic or prehistoric people and their cultures by analysis of their artefacts, inscriptions, monuments and other such material remains, especially those that have been documented from excavations. This focus is somewhat narrow, because it excludes many new methods that have emerged in the last few decades (described in detail by Prabhakar and Korisettar in this special section (page 1873)). One such novel method is to study large imprints on the landscape caused by human activity. These tell-tale features include soil marks, crop marks, drainage patterns, field boundaries and a host of man-made structures, whose study can provide additional cultural insights. In some cases, these features are difficult to detect by the naked eye at ground level, but are detectable by remote sensing techniques from aerial/space-based platforms in a non-destructive manner. For these reasons, it is now well recognized that examining archaeological landscapes using remote sensing can complement traditional investigations. An analysis of remote sensing data can play an important role in (1) understanding spatial relationships between cultural materials and activities, (2) formulating archaeological sampling schemes, (3) measuring distances and spatial distributions of structures and monuments, and (4) evolving schemes for their conservation.

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Section: Indirect Signaturesmentioning

confidence: 99%

“…They are statistical in nature, with a certain mean value and some dispersion around it. The effects of polarization in analysing archaeological landscapes have been studied by Holcomb and Shingiray 19 and Rajani et al 20 .…”

Section: Other Dimensions Of Signatures and Their Interpretationmentioning

confidence: 99%

The Science behind Archaeological Signatures from Space

Navalgund

Rajani

2017

Current Science

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“…Satellite images have also been used to investigate ritual spaces and cultural landscapes 10 . Integrated applications of satellite imagery, GPS and GIS in India has been carried out for Nalanda 11 , Hampi 12 and Talakadu 13 as pilot case studies.…”

Section: Remote Sensing and Gis Applications In Archaeologymentioning

confidence: 99%

National-Scale Inventory and Management of Heritage Sites And Monuments:Advantages and Challenges of Using Geospatial Technology

2017

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India is a vibrant and culturally diverse country with more than 3600 heritage sites and monuments of national importance, of which only 36 are recognized as World Heritage Sites by UNESCO. These heritage sites and monuments are precious and non-renewable resources which need to be conserved, protected and monitored. Conventional along with emerging geospatial techniques are required to prepare databases and action plans to manage them effectively and efficiently. This article discusses ISRO's efforts in the last decade in the field of archaeology using highresolution remote sensing data in conjunction with GIS, GPS and other geospatial techniques in various applications like inventory and site management plans for a monument/site, cultural resources management plans for World Heritage Sites as well as in exploration archaeology and research for predictive location modelling in the identification of areas with high archaeological potential. Most of the projects have been executed in collaboration with major stakeholders involved in archaeology and in the process have institutionalized the use of geospatial technology to a large extent in operational and research activities.

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“…Paleodrainage network of western Rajasthan has been reconstructed using multi-sensor satellite data (radar as well optical sensors) and GIS techniques 23 . A buried channel near the archeological site of Talakadu, Mysore, Karnataka situated on banks of River Cauvery was revealed by analysis of RADARSAT-1 C band VV polarization data 24 . These studies demonstrated the potential of radar data in detecting hitherto unknown features of geoarchaeological significance.…”

Section: Introductionmentioning

confidence: 99%

Potential of RISAT-1 SAR Data in Detecting Palaeochannels in Parts of the Thar Desert, India

Kumar¹,

Rajawat²

2017

Current Science

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In the present study, we have demonstrated the potential of RISAT-1 Synthetic Aperture Radar (SAR) data to detect palaeochannels in parts of Thar Desert, India, which may be utilized as one of the guides of geoarchaeological exploration, besides forming groundwater prospective zones. Palaeochannels have been detected using RISAT-1 SAR MRS datasets in the southern parts of Jaisalmer and northeastern parts of Barmer districts, Rajasthan. These palaeochannels of length varying between 14 and 36 km and width varying between 20 and 65 m are present within parabolic sand dune complexes. Palaeochannels have been detected as distinct dark tone on RISAT-1 SAR data compared to feeble expression on corresponding LANDSAT-OLI FCC datasets. This is due to sand-filled valleys, acting as radar smooth surface and absorbing the radar energy with negligible backscatter and enhanced topography due to side-looking capability of RISAT-1 SAR. High-resolution Cartosat DEM has been utilized to prepare topographical profiles, supporting the geomorphological interpretation. Merging of RISAT-1 SAR and LANDSAT ETM datasets using PCA techniques led to enhancements of palaeochannels on merged FCC data products. Like polarization of RISAT-1, SAR data could further enhance and aid in detecting palaeochannels. The entire region was flooded in August 2006 and water had flown through these palaeochannels, which subsequently dried up and facilitated their easy detection; they are otherwise difficult to interpret using pre-flood images. Analysis of sequential post-flood images has been taken up for detailed study of the area, as there is scope to detect additional hitherto unknown palaeochannels.

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Synergistic Application of Optical and Radar Data for Archaeological Exploration in the Talakadu Region, Karnataka

Abstract: Talakadu is a well known historic place

Cited by 6 publications

References 4 publications

The Science behind Archaeological Signatures from Space

The Science behind Archaeological Signatures from Space

National-Scale Inventory and Management of Heritage Sites And Monuments:Advantages and Challenges of Using Geospatial Technology

Potential of RISAT-1 SAR Data in Detecting Palaeochannels in Parts of the Thar Desert, India

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