A Step-Wise Workflow for SAR Remote Sensing of Perennial Heaving Mound/Crater on the Yamal Peninsula, Western Siberia
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Published:2023-01-03
Issue:1
Volume:15
Page:281
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ISSN:2072-4292
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Container-title:Remote Sensing
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language:en
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Short-container-title:Remote Sensing
Author:
Bondur Valery, Chimitdorzhiev TumenORCID, Dmitriev AlekseyORCID
Abstract
Climate change in the Arctic region is more significant than in other parts of our planet. One of the manifestations of these changes is crater creation with blowouts of a gas, ice and frozen soil mixture. In this context, dynamics studies of long-term heaving mounds that turn into craters as a result are relevant. A workflow for detecting and assessing anomalous dynamics of heaving mounds in the Arctic regions is proposed. Areas with anomalous increase of ALOS-2 PALSAR-2 synthetic aperture radar (SAR) backscattering intensity are detected in the first stage. These increases take place due to sudden changes in local terrain slopes when the scattering surface (mound slope) turns toward the radar. Radar backscattering intensity also rises due to depolarization at newly formed frost cracks. Validation of the detected anomaly is carried out at the second stage through a comparison of multi-temporal digital elevation models obtained from bistatic radar interferometry TerraSAR-X/TanDEM-X data. At the final stage, the deformations are assessed within the detected areas using differential SAR interferometry (DInSAR) technique by ALOS-2 PALSAR-2 data. The magnitude of the heaving along the line of sight (LOS) was 22–24 cm in the period from January 2019 to January 2020. In general, effectiveness for detecting the perennial heaving mounds and the rate assessment of their increase were demonstrated in the suggested workflow.
Funder
Ministry of Science and Higher Education of the Russian Federation
Subject
General Earth and Planetary Sciences
Reference20 articles.
1. Kizyakov, A., Khomutov, A., Zimin, M., Khairullin, R., Babkina, E., Dvornikov, Y., and Leibman, M. (2018). Microrelief Associated with Gas Emission Craters: Remote-Sensing and Field-Based Study. Remote Sen., 10. 2. Bogoyavlensky, V., Bogoyavlensky, I., Nikonov, R., Kargina, T., Chuvilin, E., Bukhanov, B., and Umnikov, A. (2021). New Catastrophic Gas Blowout and Giant Crater on the Yamal Peninsula in 2020: Results of the Expedition and Data Processing. Geosciences, 11. 3. Zolkos, S., Fiske, G., Windholz, T., Duran, G., Yang, Z., Olenchenko, V., Faguet, A., and Natali, S.M. (2021). Detecting and Mapping Gas Emission Craters on the Yamal and Gydan Peninsulas, Western Siberia. Geosciences, 11. 4. Chuvilin, E.M., Sokolova, N.S., Bukhanov, B.A., Davletshina, D.A., and Spasennykh, M.Y. (2021). Formation of Gas-Emission Craters in Northern West Siberia: Shallow Controls. Geosciences, 11. 5. Kizyakov, A., Leibman, M., Zimin, M., Sonyushkin, A., Dvornikov, Y., Khomutov, A., Dhont, D., Cauquil, E., Pushkarev, V., and Stanilovskaya, Y. (2020). Gas Emission Craters and Mound-Predecessors in the North of West Siberia, Similarities and Differences. Remote Sen., 12.
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