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Open AccessArticle

Automated Discontinuity Detection and Reconstruction in Subsurface Environment of Mars Using Deep Learning: A Case Study of SHARAD Observation

1
Department of Civil Engineering, National Institute of Technology Karnataka, Surathkal 575025, India
2
School of Engineering, Indian Institute of Technology, Mandi 175005, India
3
Department of Geoinformatics, University of Seoul, Seoul 20504, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(7), 2279; https://doi.org/10.3390/app10072279
Received: 7 February 2020 / Revised: 13 March 2020 / Accepted: 24 March 2020 / Published: 27 March 2020
Machine learning (ML) algorithmic developments and improvements in Earth and planetary science are expected to bring enormous benefits for areas such as geospatial database construction, automated geological feature reconstruction, and surface dating. In this study, we aim to develop a deep learning (DL) approach to reconstruct the subsurface discontinuities in the subsurface environment of Mars employing the echoes of the Shallow Subsurface Radar (SHARAD), a sounding radar equipped on the Mars Reconnaissance Orbiter (MRO). Although SHARAD has produced highly valuable information about the Martian subsurface, the interpretation of the radar echo of SHARAD is a challenging task considering the vast stocks of datasets and the noisy signal. Therefore, we introduced a 3D subsurface mapping strategy consisting of radar echo pre-processors and a DL algorithm to automatically detect subsurface discontinuities. The developed components the of DL algorithm were synthesized into a subsurface mapping scheme and applied over a few target areas such as mid-latitude lobate debris aprons (LDAs), polar deposits and shallow icy bodies around the Phoenix landing site. The outcomes of the subsurface discontinuity detection scheme were rigorously validated by computing several quality metrics such as accuracy, recall, Jaccard index, etc. In the context of undergoing development and its output, we expect to automatically trace the shapes of Martian subsurface icy structures with further improvements in the DL algorithm. View Full-Text
Keywords: shallow subsurface radar; lobate debris aprons; polar deposits; discontinuity; subsurface feature shallow subsurface radar; lobate debris aprons; polar deposits; discontinuity; subsurface feature
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Gupta, V.; Gupta, S.K.; Kim, J. Automated Discontinuity Detection and Reconstruction in Subsurface Environment of Mars Using Deep Learning: A Case Study of SHARAD Observation. Appl. Sci. 2020, 10, 2279.

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