DOI: 10.1016/j.tecto.2021.228860
论文题名: InSAR constraints on the active deformation of salt diapirs in the Kalut basin, Central Iran
作者: Mohammadnia M. ; Najafi M. ; Mousavi Z.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2021
卷: 810 语种: 英语
中文关键词: Central Iran
; InSAR
; Kalut basin
; Salt diapir
; SBAS method
; Sentinel-1A
英文关键词: Deformation
; Petroleum industry
; Remote sensing
; Synthetic aperture radar
; Waste disposal
; Hazardous waste disposal
; Horizontal displacements
; Industrial utilization
; Interferometric synthetic aperture radars
; Petroleum production
; Single-look complexes
; Small baseline subsets
; Vertical displacements
; Salt tectonics
; deformation
; depocenter
; geoaccumulation
; geological mapping
; radar interferometry
; salt dome
; Sentinel
; synthetic aperture radar
; Iran
; Matthiola
; Trachinotus falcatus
英文摘要: In recent years, salt diapirs have been widely used for gas storing, hazardous waste disposal, mining, and petroleum production. The rate and pattern of active movement in salt structures are crucial to be obtained before planning these industrial utilizations. The central basin of the Iranian plateau represents well-exposed and -preserved diapirs that can be considered as an analog for other salt basins around the world where the exposures are not as good. Integration of the Interferometric Synthetic Aperture Radar (InSAR) technique with remote-sensing structural mapping permits us to study the active surficial deformation of eight salt diapirs in the Kalut basin in central Iran. We classify the Kalut diapiric structures into salt walls, massifs, stocks, and welds. We then use 75 Single Look Complex (SLC) IW scenes acquired on the ascending collected from November 2014 to November 2018 and 62 SLC images on descending geometries collected from October 2014 to January 2018, both covering the same period. The Sentinel-1 images are processed by the Small BAseline Subset (SBAS) approaches to define vertical and horizontal displacement maps revealing that the Kalut basin is one of the most-active present-day diapiric systems in the world, its eight salt diapirs are rising, and none of them subsides. Maximum calculated rates of growth reach 8 mm/yr in vertical and ~ 2 mm/yr in horizontal directions, suggesting that in general vertical displacements play a significant role in the deformation of this salt-controlled basin. Salt stocks are uniformly rising in their crestal domain (up to 8 mm/yr) with lateral spreading along their flanks (1–2 mm/yr). The larger salt walls are more active and rising faster (8 mm/yr) than smaller ones (3 mm/yr), while welded areas are inactive. These rising salt diapirs are flanked by seasonal depocenters accumulating up to 10 mm/yr of fluvial, evaporitic, and aeolian deposits. © 2021 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170865
Appears in Collections: 气候变化与战略
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作者单位: Department of Earth Sciences, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran
Recommended Citation:
Mohammadnia M.,Najafi M.,Mousavi Z.. InSAR constraints on the active deformation of salt diapirs in the Kalut basin, Central Iran[J]. Tectonophysics,2021-01-01,810