Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Mohamed El-Ashquer"'
Publikováno v:
Egyptian Journal of Remote Sensing and Space Sciences, Vol 26, Iss 3, Pp 607-617 (2023)
Marine gravity has been modeled using satellite radar altimetry for more than two decades. However, the accuracy of the predicted gravity field is constrained by the range precision and spatial coverage of the altimetry observations. The objective of
Externí odkaz:
https://doaj.org/article/d41144f336cc4189b358052bd1aa1f9f
Publikováno v:
Egyptian Journal of Remote Sensing and Space Sciences, Vol 26, Iss 2, Pp 333-340 (2023)
Orthometric heights are important for various applications such as GIS, geomatics, engineering, and geoscience. The ellipsoidal heights can be computed by Global Navigation Satellite System (GNSS) as an accurate, rapid, and efficient method for heigh
Externí odkaz:
https://doaj.org/article/3aa09725b586414397a04a057cc7fca6
Publikováno v:
Egyptian Journal of Remote Sensing and Space Sciences, Vol 26, Iss 2, Pp 285-292 (2023)
This research investigates the effect of the ‘future’ gravity mission (FGM) architectures i.e. Bender, Helix, Pendulum, and Cartwheel up to spherical harmonics (SH) degree/order (d/o) 120/120 to improve the estimation of the gravitational field i
Externí odkaz:
https://doaj.org/article/e9d4531c2faf460e956ec7b9234c91e0
Publikováno v:
Frontiers in Earth Science, Vol 9 (2022)
A new gravimetric geoid model, the KW-FLGM2021, is developed for Kuwait in this study. This new geoid model is driven by a combination of the XGM2019e-combined global geopotential model (GGM), terrestrial gravity, and the SRTM 3 global digital elevat
Externí odkaz:
https://doaj.org/article/8501167b508143fd85011096de2cba1e
Publikováno v:
Arabian Journal for Science and Engineering. 48:601-614
Egypt is facing several hazardous environmental phenomena, particularly Sea Level Rise (SLR) and land subsidence. It has been considered to be one of the countries most likely to be affected by SLR because of the low elevation of the Nile Delta regio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9da6d399a3ced9a6c6edb1910f828333
https://doi.org/10.1007/s13369-022-07013-y
https://doi.org/10.1007/s13369-022-07013-y
Publikováno v:
Water; Volume 14; Issue 23; Pages: 3920
Changes in the terrestrial total water storage (TWS) have been estimated at both global and river basin scales from the Gravity Recovery and Climate Experiment (GRACE) mission and are still being detected from its GRACE Follow-On (GRACE-FO) mission.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7288c99a81b72c65eed848de7237d2e2
Publikováno v:
Survey Review. 54:263-273
In this contribution, two gravimetric geoid models for Egypt; EGY-LGM2019 and EGY-FGM2019 are developed using the least-squares collocation and the Fast-Fourier Transformation methods, applying Rem...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::093f5b02a384b29bbd382f8a28dfea4a
https://doi.org/10.1080/00396265.2021.1932148
https://doi.org/10.1080/00396265.2021.1932148
Autor:
Mohamed El-Ashquer, Basem Elsaka
Publikováno v:
Survey Review. 54:233-242
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 an...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39a7a4846a4b9b94f02daf17aa14c466
https://doi.org/10.1080/00396265.2021.1919841
https://doi.org/10.1080/00396265.2021.1919841
Publikováno v:
Survey Review. 52:373-382
In this study, a thorough validation of the recently released Global Geopotential Models (GGMs) has been carried out by comparing all models with both the free-air (FA) gravity anomaly observations...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44bc99867695c6772c7e3a11fcc17f29
https://doi.org/10.1080/00396265.2019.1611256
https://doi.org/10.1080/00396265.2019.1611256
Publikováno v:
International Journal of Geosciences. 10:652-668
The gravity field and steady-state ocean circulation explorer (GOCE) satellite mission has provided numerous Global Geopotential Models (GGMs) with different processing methodologies and model accuracies. In the current contribution, the latest relea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::564657182c0ad75f040229ee127513a2
https://doi.org/10.4236/ijg.2019.106037
https://doi.org/10.4236/ijg.2019.106037