Prof. Dr. Basem Elsaka

Journals  Articles

1. Elsaka, B., Abdelmohsen, K., Alshehri, F., Zaki, A., El-Ashquer, M. (2022). Mass Variations in Terrestrial Water Storage over the Nile River Basin and Mega Aquifer System as Deduced from GRACE-FO Level-2 Products and Precipitation Patterns from GPCP Data. Water, 14(23), 3920. https://doi.org/10.3390/w14233920.
2. Elsaka, B., Francis, O., Kusche, J. (2022). Calibration of the Latest Generation Superconducting Gravimeter iGrav-043 Using the Observatory Superconducting Gravimeter OSG-CT040 and the Comparisons of Their Characteristics at the Walferdange Underground Laboratory for Geodynamics, Luxembourg.  Pure Appl. Geophys. https://doi.org/10.1007/s00024-021-02938-1.
3. Elsaka, B., El-Ashquer, M. (2022). Determination of Local Quasi-Geoid Models using FFT Estimation Technique based on Combined Gravity Anomalies from CHAMP, GRACE, GOCE, Future Satellite Missions and in-Situ Gravity observations in Western Desert of Egypt, IOSR Journal of Applied Geology and Geophysics (IOSR-JAGG), 10(1), pp. 15-24. doi.10.9790/0990-1001031524.
4. Elsaka, B. (2022). Combined observables in different inter-satellite line-of-sight directions from simulated satellite gravity mission architectures for retrieving total water storage – regional case study: the Nile River Basin. Survey Review, 54:385, 339-348 doi.org/10.1080/00396265.2021.1940723.
5. Saadon, A, El-Ashquer, M., Elsaka, B., El-Fiky, G (2022). Determination of local gravimetric geoid model over Egypt using LSC and FFT estimation techniques based on different satellite- and ground-based datasets. Survey Review, 54:384, 263-273, doi.org/10.1080/00396265.2021.1932148.
6. Elsaka, B., El-Ashquer, M. (2022) Comparison between Gaussian and decorrelation filters of GRACE-based RL05 temporal gravity solutions over Egypt. Survey Review, 54:384, 233–242, doi.10.1080/00396265.2021.1919841.
7. Elsaka, B. (2021) Evaluation of Terrestrial Total Water Height Variations over the Nile River Basin Based on Two Full-Years of GRACE-FO Gravity Field Monthly Solutions. International Research Journal of Advanced Engineering and Science (IRJAES), 6(1), pp. 90-95. IRJAES-V6N1P55Y21.
8. Elsaka, B. (2020) Comparison of Different Polynomial Degrees for Correcting the Instrumental Drift of Scintrex CG-5 Autograv Gravimeter. Australian Journal of Basic and Applied Sciences 14(5):19-25, doi:10.22587/ajbas.2020.14.5.3.
9. Aly, O. S., Elsaka, B., Al Khatibi, E. A.  (2020) Practical Experiences with the First Relative Gravimeter of Type Scintrex CG-6 Autograv in Dubai, The United Arab of Emirates. World Journal of Engineering and Technology, 8(2), 237-247. doi.org/10.4236/wjet.2020.82019.
10. Elsaka, B., Radwan, A. M., Rashwan, M. (2020). Evaluation of Nile Delta-Mediterranean Sea Conjunction Using GPS, Satellite-Based Gravity and Altimetry Datasets. Journal of Geoscience and Environment Protection, 8(2), 33-46. doi.org/10.4236/gep.2020.82003.
11. Elsaka, B. (2019) Spatio-Temporal Polar-Inclined Space Mission Architecture for a Refined Retrieve of the Earth’s Gravity Field. World Journal of Engineering and Technology, 7(4), 640-651. doi.org/10.4236/wjet.2019.74047.
12. Saadon, A. Elsaka, B., El-Ashquer, M., El-Fiky, G. (2019) Regional Evaluation of GOCE-Based GGMs with Ground-Based Gravity and GPS/Levelling Data over Egypt. International Journal of Geosciences,10(6), pp.652–668, doi:10.4236/ijg.2019.106037.
13. El-Ashquer, M., Elsaka, B., El-Fiky, G. (2017) 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. Arabian Journal of Geosciences (AJGS), 10(11), doi.org/10.1007/s12517-017-3042-9.
14. El-Ashquer, M., Elsaka, B., El-Fiky, G. (2016) On the Accuracy Assessment of the Latest Releases of GOCE satellite-based Geopotential Models with EGM2008 and Terrestrial GNSS/Levelling and Gravity Data over Egypt. International Journal of Geosciences,7(11), pp.1323–1344, doi:10.4236/ijg.2016.711097.
15. Alothman, A., Fernandes, R., Bos, M., Schillak, S., Elsaka, B. (2016) Angular Velocity of Arabian Plate from Multi-Year Analysis of GNSS data. Arabian Journal of Geosciences (AJGS),  9(8), doi.org/10.1007/s12517-016-2569-5.
16. Alothman, A., Godah, W., Elsaka, B. (2016) Gravity field anomalies from recent GOCE satellite-based geopotential models and terrestrial gravity data: A comparative study over Saudi Arabia. Arabian Journal of Geosciences (AJGS), 9(5), doi.org/10.1007/s12517-016-2393-y.
17. Elsaka, B., Alothman, A., Godah, W. (2016) On the Contribution of GOCE Satellite-Based GGMs to Improve GNSS/Leveling Geoid Heights Determination in Saudi Arabia. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, vol. 9, no. 12, pp. 5842-5850, Dec. 2016, doi:10.1109/JSTARS.2015.2495193.
18. Alothman, A, Elsaka, B. (2015) Gravity Field Solution Derived from Recent Releases of GOCE-Based Geopotential Models and Terrestrial Gravity Observations over The Kingdom of Saudi Arabia. Proc. ‘5th International GOCE User Workshop’, 24–28 November 2014 Paris, France (ESA–SP Vol.728, March 2015), doi.2015ESASP.728E..30A.
19. Elsaka, B., Ilk, K.-H., Alothman, A. (2015) Mitigation of Oceanic Tidal Aliasing Errors in Space and Time Simultaneously Using Different Repeat Sub-Satellite Tracks from Pendulum-Type Gravimetric Mission Candidate. Acta Geophysica, 63(1), pp. 301–318, doi.org/10.2478/s11600-014-0251-4.
20. Reubelt, T., Sneeuw, N., Iran Pour, S., Hirth, M., Fichter, W., Müller, J., Brieden, Ph., Flechtner, F., Raimondo, J.-C., Kusche, J., Elsaka, B., Gruber, T., Pail, R., Murböck, M., Doll, B., Sand, R., Wang, X., Klein, V., Lezius, M., Danzmann, K., Heinzel, G., Sheard, B., Rasel, E., Gilowski, M., Schubert, C., Schäfer, W., Rathke, A., Dittus, H. and Pelivan, I. (2014) Future Gravity Field Satellite Missions. Flechtner, F., Sneeuw, N., Schuh, W.-D. (Eds.), Observation of the System Earth from Space – CHAMP, GRACE, GOCE and future missions. GEOTECHNOLOGIEN Science Report No. 20, Series “Advanced Technologies in Earth Sciences”Springer, ISBN 978-3-642-32134-4, doi.org/10.1007/978-3-642-32135-1_21.
21. Elsaka, B. (2014) Feasible Multiple Satellite Mission Scenarios Flying in a Constellation for Refinement of the Gravity Field Recovery. In: International Journal of Geosciences, 5(3), pp. 267–273, doi.10.4236/ijg.2014.53027.
22. Elsaka, B. (2014) Sub-monthly Gravity Field Recovery from Simulated Multi-GRACE Mission Type. Acta Geophysica, 62(1), pp. 241–258, doi.org/10.2478/s11600-013-0170-9.
23. Elsaka, B., Forootan, E., Alothman, A. (2014) Improving the recovery of monthly regional water storage using one year simulated observations of two pairs of GRACE-type satellite gravimetry constellation. Journal of Applied Geophysics, 109, pp. 195–209, doi.org/10.1016/j.jappgeo.2014.07.026.
24. Elsaka, B., Raimondo, J.-C., Brieden, Ph., Reubelt, T., Kusche, J., Flechtner, F., Iran-Pour, S., Sneeuw, N., Müller, J. (2014) Comparing seven candidate mission configurations for temporal gravity field retrieval through full-scale numerical simulation. Journal of Geodesy, 88(1), pp. 31–43, doi.org/10.1007/s00190-013-0665-9.
25. Forootan, E., Didova, O., Schumacher, M., Kusche, J., Elsaka, B. (2014) Comparisons of atmospheric mass variations derived from ECMWF reanalysis and operational fields, over 2003 to 2011. Journal of Geodesy, 88(5), pp. 503–514, doi.org/10.1007/s00190-014-0696-x.
26. Elsaka, B., Kusche, J., Ilk, K.-H. (2012) Recovery of the Earth’s gravity field from formation-flying satellites: temporal aliasing issues. Advances in Space Research, 50(11), pp. 1534–1552, doi.org/10.1016/j.asr.2012.07.016.
27. Elsaka, B. (2010) Simulated Satellite Formation Flights for Detecting the Temporal Variations of the Earth’s Gravity Field. Ph.D. Dissertation, University of Bonn, hss.ulb.uni-bonn.de/2010/2151/2151.htm.
28. Elsaka, B. (2003) Forth Derivative Analysis of Gravity Data. Master Thesis (M. Sc.), Faculty of Science, Helwan University, Cairo, Egypt.

Group Team

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