EVALUATION OF APPLICABILITY OF ERS INSAR DATA FOR MONITORING OF YAMBURG-NYDA GAS PIPELINES STATE

• Main Authors: Er Zakharov, Nikolay Khrenov
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Nyda; Yamburg; permafrost
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.380.1276; http://earth.esa.int/workshops/salzburg04/papers_posters/3P04_1_zakhar_115.pdf

The goal of the paper is a discussion of applicability of repeated orbits SAR interferometry technique for monitoring of gas pipelines in permafrost areas in order to detect pipes displacements. Eleven ERS SAR scenes obtained in 1993-1998 were combined in interferometric pairs and interferograms of various quality were synthesized. The displacements of a pipes 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 oneyear interferogram. Sinking of pipes because of underlying permafrost thawing is seen on the tandem pair obtained during one-day summer interval. The results mentioned demonstrate possibility of the detection a centimeter scale vertical displacements of pipes by means of spaceborne repeated orbits SAR interferometry. 1.