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Smart Green Projects InitiativeSpace Technology and its ApplicationsThe Third Advanced ArAS School for Astrophysics.يوم المرأة العالمى فى الفلكهلال شهر رمضان بين الرؤية العلمية والرؤية البصريةندوة يابانية مصرية مشركة حول التكنولوجيا المتقدمة فى تقدير المخاطر الزلزاليةهزة أرضية علي بعد 27 كم شمال مدينة السويس ودرجة قوته 4.1 ريختر وعلي عمق 10كمزلزال تركيا وسوريا ونظرة شمولية على مصر و الشرق الأوسطزلزال تركيا وسوريا ونظرة شمولية على مصر و الشرق الأوسطنفى المعهد القومى للبحوث الفلكية و الجيوفيزيقية تعرض مصر لتسونامى و زلزال مدمر خلال الايام المقبلةوزير التعليم العالي والبحث العلمي يرأس اجتماع مجلس إدارة المعهد القومي للبحوث الفلكية والجيوفيزيقيةبرعاية وزير التعليم العالي والبحث العلمي تنظيم ورشة عمل حول “تصنيع النموذج الأول من المحول الرقمي التخزيني في منظومة رصد الزلازل”برعاية وزير التعليم العالي والبحث العلمي.. افتتاح أعمال المؤتمر الإقليمي السادس لعلوم الفلك والفضاء بالشرق الأوسط وإفريقياتغطية خاصة لزلزال تركيا و سورياLOOKING BEYOND ITALIAN SPACE DAYيوم الفضاء العالميSecond Advanced ArAS School for AstrophysicsName Exo Worlds“ندوة بعنوان”المُناخ ما بين الطبيعة الأرضية والفلك (هموم وحلول)إكتشاف نجمًا متغيرًا جديدًا لفريق بحثى بالمعهد

Prof. Dr. Basem Elsaka

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Welcome

Welcome to the web page of Prof. Dr. Basem Elsaka, Full Professor at the Geodynamics Department, National Research Institute of Astronomy and Geophysics – NRIAG. At the different sections of the web page, you could find information (About Me) relating to my work experience, education and research interests as well as updated information (Publications) relating to my scientific activities.

Professional Profile 

Full Name: Basem Abdelkareem Anwar Elsaka

Scientifics Name: Basem Elsaka

E-mails: basem_elsaka2002@yahoo.com

Address: Gravity Lab., Geodynamics Department, National Research Institute of Astronomy and Geophysics (NRIAG), 11421 – Helwan – Cairo – Egypt

Social Media Links

My Bio

Work Experience

  • 08.2022–Present: Full Professor at National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt.
  • 7.2016–07.2022: Associate Professor at National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt.
  • 04.2011–07.2016: Assistant Professor at National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt.
  • 01.2014–06.2015: Consultant at Space and Aviation Research Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh, Saudi Arabia.
  • 01.2010–12.2013: Post-Doc. at Institute of Geodesy and Geoinformation, the University of Bonn, Bonn, Germany.
  • 04.2006–06.2010: Doctoral Student at Institute of Geodesy and Geoinformation, the University of Bonn, Bonn, Germany.
  • 11.2003–03.2006: Research Associate at National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt.
  • 09.1999–10.2003: Research Assistant at National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt.

Education

  • 04.2006–06.2010: Dr. Eng. in Geodesy at Institute of Geodesy and Geoinformation, the University of Bonn, Bonn, Germany.
    Ph.D. Thesis: “Simulated Satellite formation flights for detecting the Temporal Variations of the Earth’s Gravity Field”.
  • 11.2001–07.2003: Master of Science in Geophysics (M. Sc.) at Faculty of Science, Helwan University, Cairo, Egypt.
    M.Sc. Thesis: “Forth Derivative Analysis of Gravity Data”.
  • 10.1995–05.1999: Bachelor of Science in Geophysics (B. Sc.) at Faculty of Science, Mansoura University, El Mansoura, Egypt.
My Research Interests

My Research Interests

General

  • Physical and Satellite Geodesy.
  • Terrestrial Gravimetry.

Special

  • Determination of the static and time-dependent gravity fields from different satellite formation flights, e.g. GRACE, GRACE Follow-On, Multi-GRACE-Type, Cartwheel-Type, LISA-Type, Helix-Type, Pendulum-Type, Bender-Type Constellations.
  • Optimal configuration design for future satellite gravity field missions (in low-low satellite-to-satellite tracking mode).
  • Modeling of geoid heights using terrestrial- and satellite-based gravity field observations using Remove-Compute-Restore method in the sense of Least-Squares collocation and FFT approaches.
Scientific IDs

Scientific IDs

  Scientific Name of Publications:

Basem Elsaka

  ID Research

  Scopus ID:

55327317900

  Researcher ID:

F-4689-2014

 Orcid ID:

0000-0003-0216-9486
My Awards

My Awards

Journals  Articles

  1. El-Ashquer, M., Elsaka, B., Mogren, S., Abdelmohsen, K., Zaki, A. (2023). Assessment of changing satellite gravity mission architectures using terrestrial gravity and GNSS-leveling data in the Kingdom of Saudi Arabia. The Egyptian Journal of Remote Sensing and Space Science, 26(2), pp. 285-292, https://doi.org/10.1016/j.ejrs.2023.03.004.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. 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.
  16. 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.
  17. 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.
  18. 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.
  19. 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.
  20. 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.
  21. 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.
  22. 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.
  23. 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.
  24. 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.
  25. 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.
  26. 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.
  27. 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.
  28. 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.
  29. 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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