Long term displacement observation of the Ataturk Dam, Turkey by multi-temporal InSAR analysis

BAYIK Ç., ABDİKAN S., Arikan M.

ACTA ASTRONAUTICA, cilt.189, ss.483-491, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 189
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.actaastro.2021.09.022
  • Dergi Adı: ACTA ASTRONAUTICA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, INSPEC, Metadex, Public Affairs Index, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.483-491
  • Anahtar Kelimeler: Rock-fill dam, InSAR, Deformation, Structural safety monitoring, DEFORMATION, SETTLEMENT, VOLCANO, GPS
  • Hacettepe Üniversitesi Adresli: Evet

Özet

Monitoring large infrastructures is vital for determining structural safety over time. Dams are structures that influence agricultural activities and have high economic contributions. The dams' structural safety was mainly addressed using conventional measurement techniques. However, these might not be time-efficient and practical, considering the large surfaces of dams. This paper presents a long-term InSAR analysis of the Ataturk Dam, Turkey's largest and one of the five biggest dams in Europe using ERS, ENVISAT, and Sentinel-1 satellites images. Since only Sentinel-1 data have acquisitions in ascending and descending orbits, we could estimate surface movements also in the vertical and east-west directions using both lines of sight (LOS) displacements. The results showed that the east-west movement is higher than vertical movement. As a result, we observe a maximum of 10 mm/yr displacement in the LOS direction at the dam's crest for period of 2003 and 2010, decreasing down the slope.