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Comparison between Gaussian and decorrelation filters of GRACE-based RL05 temporal gravity solutions over Egypt
Faculty
Engineering
Year:
2021
Type of Publication:
ZU Hosted
Pages:
Authors:
Mohammed Ahmed Ali Alashkar
Staff Zu Site
Abstract In Staff Site
Journal:
Survey Review Taylor & Francis
Volume:
Keywords :
Comparison between Gaussian , decorrelation filters , GRACE-based RL05
Abstract:
This contribution provides a comparison between the Gaussian and decorrelation filters as derived from GRACE products (RL05) estimated by the official GRACE Science Data System centres (GFZ, CSR and JPL) as well as the ITSG-GRACE2016 solutions over Egypt. The outcome of this study will help in finding out which of these centres provides improved temporal gravity solutions as well as the most promising GRACE time series over Egypt. The obtained results regarding Gaussian filters show that the GFZ centre provides the most promising solutions w.r.t. CSR and JPL. Whereas the ITSG-GRACE2016 products provide improvements, especially at Gaussian radius 200 km, of about 56%, 68% and 60% w.r.t. CSR, JPL and GFZ solutions, respectively. Regarding the decorrelation filtering, the ITSG-GRACE2016 provides the least Std. w.r.t. CSR, JPL and GFZ solutions showing for the DDK8 improvement of about 48%, 64% and 68% w.r.t. the three centres GFZ, JPL and CSR, respectively.
Author Related Publications
Mohammed Ahmed Ali Alashkar , "Determination of local gravimetric geoid model over Egypt using LSC and FFT estimation techniques based on different satellite- and ground-based datasets", Taylor & Francis, 2021
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Mohammed Ahmed Ali Alashkar , "On the Accuracy Assessment of the Latest Releases of GOCE Satellite-Based Geopotential Models with EGM2008 and Terrestrial GPS/Levelling and Gravity Data over Egypt", Scientific Research Publishing, 2016
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Mohammed Ahmed Ali Alashkar , "Accuracy Assessment of GPS Leveling Applications: Case Study, North West Lake Nasser Aswan, Egypt", Ain Shams University, Faculty of Engineering, 2016
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Mohammed Ahmed Ali Alashkar , "An Improved Local Geoid Model for Egypt using Satellite Geopotetial and Terrestrial Data", Ain Shams University, Faculty of Engineering, 2017
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Mohammed Ahmed Ali Alashkar , "EGY-HGM2016: an improved hybrid local geoid model for Egypt based on the combination of GOCE-based geopotential model with gravimetric and GNSS/levelling measurements", Springer, 2017
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Department Related Publications
Ahmed Hessien Mahmoud Mohamed Elyamany, "A Performance Evaluating Model For Construction Companies: Egyptian Case Study", ASCE, 2008
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Mohamed Ismail Ahmed Amer, "Construction of Ameria Caisson in Egypt", Journal of Construction Engineering and Management, ASCE, 1995
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Ahmed Abdelaaty Gaballah Elsayaad, "Construction of Ameria Caisson in Egypt", Journal of Construction Engineering and Management, ASCE, 1995
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Ismaiel Abdelhamied Mohamed Basha, "Construction of Ameria Caisson in Egypt", Journal of Construction Engineering and Management, ASCE, 1995
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Amr Abdelaziz Mohamed Mosa , "Measuring Important Factors Affecting Construction Projects Duration", Journal of Al Azhar Univ. Eng. Sector, 2014
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