کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5781846 1413902 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A regional background model for the Arabian Peninsula from modeling satellite gravity gradients and their invariants
ترجمه فارسی عنوان
یک مدل پس زمینه منطقه ای برای شبه جزیره عربستان از مدل سازی گرادیان های ماهواره ای ماهواره ای و مقادیر آنها
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی
Gravity gradients of the GOCE (Gravity field and steady state Ocean Circulation Explorer) mission are available and provide free available data with global homogeneous coverage. The spatial resolution is about 80 km which makes it possible to construct regional models of large or remote areas. We study the benefit of using this data for compiling a 3D regional density model of the lithosphere with emphasis on the crustal structure for the Arabian Peninsula. We keep the data at satellite level to avoid noise amplification. The initial density model was set up with only a few seismic constraints and modified by forward modeling. Forward models benefits from the use of the full gravity gradient tensor and the invariants. The misfits between the measured and calculated field are more easily recognized in the gravity gradient tensor than in the gravity field alone. Different shape and location of anomalies are visible in the different components. Hence, modeling is better controlled as geometries which fit one component do not necessarily fit all other components. Regional models are important for a general understanding of any area and as a background for local interpretations. Here, we explain how to construct density models from satellite gravity gradients and show the advantage of such an approach by comparison to earlier studies based on either seismic or gravity data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tectonophysics - Volume 692, Part A, 5 December 2016, Pages 86-94
نویسندگان
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