کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9525787 | 1349892 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An Earth gravity field model complete to degree and order 150 from GRACE: EIGEN-GRACE02S
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
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چکیده انگلیسی
A new medium-wavelength gravity field model has been calculated from 110 days of GRACE tracking data, called EIGEN-GRACE02S. The solution has been derived solely from satellite orbit perturbations and is independent from oceanic and continental surface gravity data. This model that resolves the geoid with an accuracy of better than 1Â mm at a resolution of 1000Â km half-wavelength is about one order of magnitude more accurate than recent CHAMP-derived global gravity models and over two orders of magnitude more accurate than the latest pre-CHAMP satellite-only gravity models. This progress in accuracy together with an increase in resolution are the result of the dedicated instrumentation of the twin GRACE satellites. The instrumentation allows for continuous GPS-GRACE high-low satellite-to-satellite tracking, on-board measurement of non-gravitational accelerations, precise attitude determination, and-being the most important component-the observation of the intersatellite distance and its rate of change.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Geodynamics - Volume 39, Issue 1, January 2005, Pages 1-10
Journal: Journal of Geodynamics - Volume 39, Issue 1, January 2005, Pages 1-10
نویسندگان
Christoph Reigber, Roland Schmidt, Frank Flechtner, Rolf König, Ulrich Meyer, Karl-Hans Neumayer, Peter Schwintzer, Sheng Yuan Zhu,