ERS DINSAR observations of gas pipelines located in permafrost area of Siberia

• Main Authors: Er I. Zakharov, Nikolay N. Khrenov
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: permafrost; Siberia
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.558.5332; http://earth.esa.int/workshops/ceos_sar_2004/papers/30_zakharov.pdf

The idea of the report is a discussion of applicability of repeated orbits SAR interferometry technique for monitoring of gas pipelines in permafrost areas with a goal of the detection of pipes displacements. Eleven ERS SAR scenes obtained in 1993-1998 were combined in interferometric pairs and interferograms of various qualities were synthesized. The displacements of a pipe as well as modifications of surrounding soils state were discovered on many interferograms. An uplift of pipes because of soils frost heave is clearly seen on the one-year interferogram. Sinking of pipes because of underlying permafrost thawing is seen on the tandem pair obtained during one-day interval. The results mentioned demonstrate the possibility of the detection a centimeter scale vertical displacements of pipes by means of spaceborne repeated orbits SAR interferometry.