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Strain/Stress Evaluation of Dorsa Geikie using Chandrayaan-2 Terrain Mapping Camera-2 and Other Data


Affiliations
1 Space Applications Centre, Jodhpur Tekra, Ambawadi Vistar, Ahmedabad 380 015, India, India
2 Department of Geology, Asutosh College, 92, S.P. Mukherjee Road, Kolkata 700 026, India, India
 

The high-resolution panchromatic stereo camera Terrain Mapping Camera-2 (TMC-2) on-board the Indian Chandrayaan-2 mission sends images of the lunar surface at 5m resolution with a low to high sun-angle from an altitude of 100km. These images help identify subtle topographic variations and enable mapping of low-elevation landforms, one of which is a prominent ~220km long wrinkle ridge called the Dorsa Geikie (DG) lying within Mare Fecunditatis. The favourable resolutionof TMC-2 images and the digital elevation models provide opportunities for a detailed structural study of the DG and to reveal crustal shortening, cumulative contractional strain andpalaeostress regime responsible for thrust faulting for the first time.The time of deformation and formation of dorsa is also estimated for a holistic spatio-temporal understanding of deformation. This study presents initial analysis of the data received from TMC-2, and the accuracy of the results are likely to improve as the ingredients get amended and evolved in future

Keywords

Displacement-Length Scaling, Lunar Contraction, Mare Fecunditatis, Stress/Strain Evaluation, Wrinkle Ridges.
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  • Strain/Stress Evaluation of Dorsa Geikie using Chandrayaan-2 Terrain Mapping Camera-2 and Other Data

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Authors

A. S. Arya
Space Applications Centre, Jodhpur Tekra, Ambawadi Vistar, Ahmedabad 380 015, India, India
Joyita Thapa
Department of Geology, Asutosh College, 92, S.P. Mukherjee Road, Kolkata 700 026, India, India
Abhik Kundu
Department of Geology, Asutosh College, 92, S.P. Mukherjee Road, Kolkata 700 026, India, India
Rwiti Basu
Department of Geology, Asutosh College, 92, S.P. Mukherjee Road, Kolkata 700 026, India, India
Amitabh
Space Applications Centre, Jodhpur Tekra, Ambawadi Vistar, Ahmedabad 380 015, India, India
Ankush Kumar
Space Applications Centre, Jodhpur Tekra, Ambawadi Vistar, Ahmedabad 380 015, India, India
Arup Roychowdhury
Space Applications Centre, Jodhpur Tekra, Ambawadi Vistar, Ahmedabad 380 015, India, India

Abstract


The high-resolution panchromatic stereo camera Terrain Mapping Camera-2 (TMC-2) on-board the Indian Chandrayaan-2 mission sends images of the lunar surface at 5m resolution with a low to high sun-angle from an altitude of 100km. These images help identify subtle topographic variations and enable mapping of low-elevation landforms, one of which is a prominent ~220km long wrinkle ridge called the Dorsa Geikie (DG) lying within Mare Fecunditatis. The favourable resolutionof TMC-2 images and the digital elevation models provide opportunities for a detailed structural study of the DG and to reveal crustal shortening, cumulative contractional strain andpalaeostress regime responsible for thrust faulting for the first time.The time of deformation and formation of dorsa is also estimated for a holistic spatio-temporal understanding of deformation. This study presents initial analysis of the data received from TMC-2, and the accuracy of the results are likely to improve as the ingredients get amended and evolved in future

Keywords


Displacement-Length Scaling, Lunar Contraction, Mare Fecunditatis, Stress/Strain Evaluation, Wrinkle Ridges.

References





DOI: https://doi.org/10.18520/cs%2Fv121%2Fi1%2F94-102