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Geoid Modelling in the Sultanate of Oman

Geoid Modelling in the Sultanate of Oman

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Title: Geoid Modelling in the Sultanate of Oman
Author: Lasagna, Patrick Anthony Luke
Abstract: This thesis covers the process taken to complete the Oman National Geoid Model project for the Sultanate of Oman. The steps taken to repair poor quality and badly referenced gravity data are explained. Each observation point was assigned a new orthometric height and its observed gravity was inversely calculated. The major biases that existed in the ground dataset were fixed using airborne free air anomalies at altitude. The ground data was merged with downward continued airborne gravity which was used to calculate the gravimetric geoid using the remove-compute-restore method. The remove step was completed using the residual terrain model modelling technique to calculate the quasigeoid. The gravimetric geoid was computed by adding the N- separation term to the quasigeoid and was fitted to the GPS-on-benchmarks provided by Oman. The external accuracy of the computed gravimetric geoid is 14 cm below mean sea level with a standard deviation of 30 cm.
Subject: Geophysics
Keywords: Geoid
Oman
Remove-Compute-Restore
Residual Terrain Model
Quasigeoid
Type: Electronic Thesis or Dissertation
Rights: Author owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
URI: http://hdl.handle.net/10315/33619
Supervisor: Pagiatakis, Spiros D.
Degree: MSc - Master of Science
Program: Earth & Space Science
Exam date: 2017-04-17
Publish on: 2017-07-27

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