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Satellite imagery and spectral matching for improved estimation of calcium carbonate and iron oxide abundance in mine areas

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Abstract

This study attempts grade-wise mapping in a limestone mine in Ariyalur, Southern India, and in the iron ore mines of Noamundi, Eastern India. After noise removal in the Sentinel 2A (multispectral) and EO-1 Hyperion (hyperspectral) image datasets, spectral matching is performed using the Jeffries-Matusita (JM) distance, Spectral Correlation Mapper (SCM), and combined JM-SCM measure. Due to the specific absorption spectra for carbonates (1900 nm, 2000 nm, and 2160 nm) and iron oxide (865 nm), it is possible to identify and map such mineral deposits using the multispectral dataset (Sentinel 2A) and hyperspectral dataset (EO-1 Hyperion) respectively. The grade-wise mapping of carbonate in the Ariyalur mine using the Sentinel 2A dataset by the Jeffries-Matusita (JM) approach and Spectral Correlation Mapper (SCM) yielded R2 values of 0.44 and 0.77 respectively, whereas the combined JM-SCM approach resulted in a higher correlation with an R2 value of 0.87. The grade-wise mapping of iron oxide in Noamundi using the EO-1 Hyperion dataset by the Jeffries-Matusita (JM) approach and the Spectral Correlation Mapper (SCM) approach yielded R2 values of 0.15 and 0.76, respectively, whereas the combined JM-SCM approach resulted in a higher correlation with an R2 value of 0.90. Such an improved performance of the combined approach is primarily due to the simultaneous and effective utilization of band-wise information (by JM) and correlation aspects (by SCM) of the reference and target spectra considered in the matching algorithm. Thus, in this study, the proposed algorithm proved its compatibility and utility in extracting information on mineral abundance distribution for mine areas.

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Data availability

The raw image datasets used in this study are available in the United States Geological Survey (USGS) Earth Explorer repository (https://earthexplorer.usgs.gov/).

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Acknowledgments

The authors thank the United States Geological Survey for the Sentinel 2A and EO-1 Hyperion datasets. Further, the authors thank the RAMCO limestone mines, Ariyalur, India, for their support in collection of field data.

Code availability

The algorithms implemented in the study are of custom code type and will be available with the corresponding author.

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Correspondence to Padma SrinivasaPerumal.

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All the three authors declare that there is certainly no conflict of interest with regard to this scientific paper titled “Satellite imagery and spectral matching for improved estimation of calcium carbonate and iron oxide abundance in mine areas”

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Responsible Editor: Biswajeet Pradhan

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SrinivasaPerumal, P., Shanmugam, S. & Ganapathi, P. Satellite imagery and spectral matching for improved estimation of calcium carbonate and iron oxide abundance in mine areas. Arab J Geosci 13, 914 (2020). https://doi.org/10.1007/s12517-020-05859-w

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  • DOI: https://doi.org/10.1007/s12517-020-05859-w

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