Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2019, Vol. 16, No. 2, pp. 273-277
Interferometric observation of landslide area dynamics on the Bureya River by means of Sentinel-1 radar data in 2017–2018
L.N. Zakharova
1 , A.I. Zakharov
1 1 V. A. Kotelnikov Institute of Radioengineering and Electronics RAS, Fryazino Branch, Fryazino, Moscow Region, Russia
Accepted: 20.04.2019
DOI: 10.21046/2070-7401-2019-16-2-273-277
The paper describes the results of interferometric processing of Sentinel-1 radar data acquired since November 2016 till December 2018 over the area with active landslide activity on the Bureya riverbank. Radar differential interferometry technique was applied to measure landslide surface displacements in cold seasons of the year with low air temperatures below zero, when interferometric coherence of scattered signals in repeated observations was sufficiently high. Small-scale radial displacements were about 0.5–0.7 cm per 12 days; the velocity of displacements was stable all the winter 2016–2017. In the beginning of winter 2017–2018 the radial velocity was as high as 3 cm per 12 days; it was decreasing gradually till the end of cold season to the value 0.7 cm/12 days. Conventional radar interferometry approach to measuring the displacements during warm period of the year was inapplicable because of low interferometric coherence, but analysis of the coherence temporal behavior allows making a conclusion about abrupt activation of soil sliding in the end of spring 2018. An overall conclusion is that the precursors of the December 2018 landslide could be observed on Sentinel-1 radar data two years earlier.
Keywords: synthetic aperture radar (SAR), SAR interferometry, estimation of surface displacement, differential interferometry, interferometric coherence, landslide
Full textReferences:
- Zakharov A. I., Zakharova L. N., Krasnogorsky M. G., Monitoring opolznevoi aktivnosti metodami radarnoi interferometrii s pomoshch’yu trekhgrannykh ugolkovykh otrazhatelei (Monitoring of the landslide activity using radar interferometric observations of trihedral corner reflectors), Issledovanie Zemli iz kosmosa, 2018, Vol. 3, pp. 80–92.
- Zakharova L. N., Zakharov A. I., Mitnik L. M., Pervye rezul’taty radiolokatsionnogo monitoringa posledstvii opolznya na reke Bureya po dannym Sentinel-1 (First Results of the Assessment of the Landslide Consequences on the Bureya Riverbank Using Sentinel-1 Radar Data), Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2019, Vol. 16, No. 2, pp. 69–74.
- Kramareva L. S., Loupian E. A., Amelchenko Yu.A., Burtsev M. A., Krasheninnikova Yu. S., Sukhanova V. V., Shamilova Yu. A., Nablyudenie zony obrusheniya sopki v raione reki Bureya 11 dekabrya 2018 goda (Observation of the hill collapse zone near the Bureya River on December 11, 2018), Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2018, Vol. 15, No. 7, pp. 266–271.
- Kramareva L. S., Loupian E. A., Amelchenko Yu. A., Burtsev M. A., Krasheninnikova Yu. S., Sukhanova V. V., Shamilova Yu. A., Boroditskaya A. V., Nablyudenie za khodom vzryvnykh rabot i ustroistvom prorana v zone skhoda skal’nykh porod na reke Bureya (Observing the progress of blasting operations and channeling in the area of the rock slide on the Bureya River), Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2019, Vol. 16, No. 1, pp. 259–265.
- Ostroukhov A. V., Kim V. I., Makhinov A. N., Otsenka morfometricheskikh parametrov opolznya na Bureiskom vodokhranilishche i ego posledstvii na osnove DDZZ i dannykh polevykh izmerenii (Estimation of the morphometric parameters of the landslide on the Bureyskoe Reservoir and its consequences on the basis of remote sensing data and field measurements), Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2019, Vol. 16, No. 1, pp. 254–258.