کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1780852 1523911 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Separation of dynamic and isostatic components of the Venusian gravity and topography and determination of the crustal thickness of Venus
ترجمه فارسی عنوان
جداسازی اجزای پویا و ایزواستاتیک گرانش و توپوگرافی زهره و تعیین ضخامت پوسته زهره
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فیزیک زمین (ژئو فیزیک)
چکیده انگلیسی
Assuming that the long-wavelength geoid and topography of Venus are supported by both mantle convection and Airy isostasy, we propose a method to separate the dynamic and isostatic components of the Venusian gravity and topography with the aid of the dynamic admittance from numerical models of mantle convection and the isostatic admittance from an Airy isostatic model. The global crustal thickness is then calculated based on the isostatic component of the gravity and topography. The results show that some highland plateaus such as Ishtar Terra and Ovda Regio have thick crust, which are largely supported by isostatic compensation. Other highland plateaus such as Thetis and Phoebe Regiones appear to have superimposed contributions from crustal thickening and dynamic support. Volcanic rises such as Atla and Beta Regiones have thin crust, which is consistent with the postulation that these volcanic rises are mainly the products of dynamic uplift caused by mantle plumes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Planetary and Space Science - Volume 129, 15 September 2016, Pages 24-31
نویسندگان
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