Calculating of Taftan volcano displacement using PSI technique and Sentinel 1 images

Journal of Radar and Optical Remote Sensing and GIS

دوره 6، شماره 3، آذر 2023

نوع مقاله: مقاله پژوهشی

شناسه دیجیتال (DOI): 10.30495/jrors.2024.2002141.1202

نویسندگان

Mahdieh Shirmohamadi^{* 1}؛ Seyed Mohammad Tavakkoli Sabour¹؛ Parviz Zeaiean Firooz Abadi²؛ Javad Sadidi³

¹Department of Remote sensing and Geographic Information Systems, Faculty of Geographical Sciences, Kharazmi university, TEHRAN, IRAN

²Associated professor of remote sensing and GIS, Faculty of Geography, Kharazmi University

³Department of Remote sensing and Geographic Information Systems, Faculty of Geographical Sciences, Kharazmi university ,Tehran,

چکیده

Taftan is a semi-active volcano located in southeast Iran with many craters. The main objective of this study is to investigate whether subsidence or uplift in Taftan Peak. 58 Sentinel 1-A images acquired from January 2015 to December 2020 in the ascending orbit mode, and 102 Sentinel 1-A Sentinel 1-B images acquired from October 2014 to June 2020 in the descending orbit mode were preprocessed for this purpose. The interferograms with the permanent scatterer interferometry (PSI) method were created using SARPROZ and StaMPS softwares, in which atmospheric corrections were made automatically,  and then the surface displacement of Taftan volcano estimated.The Line of Sight (LOS) displacement corresponding to the uplift was 0.5 mm to 1 mm yr-1 for the ascending orbit and 1 mm yr-1for the descending orbit. Because no GPS station was close to Taftan volcano, the GPS measurements of one station located in the study area (Saravan station) was used to check the accuracy of PSI method. The GPS station of SARAVAN has situated inside the town ,and it is appropriate to use and analyze PSI technique in this station. As a result, the researchers found that the PSI method is in accordance with the GPS data. 

کلیدواژه‌ها

Sentinel 1؛ PSI؛ Taftan volcano؛ GPS