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Showing 1-20 of 1,863 results
  1. A user-friendly software package for modelling gravimetric geoid by the classical Stokes-Helmert method

    With the progress in Global Navigation Satellite Systems (GNSS) technology, accurate geoid modelling has started to play an essential role in...

    Ramazan Alpay Abbak, Ropesh Goyal, Aydin Ustun in Earth Science Informatics
    Article Open access 16 May 2024
  2. Improving the Accuracy of Local Gravimetric Geoid Modelling Using Simulated Terrestrial Gravity Data

    Geodetic observations in any country or region require a precise local geoid model. Hence, this study has improved the geoid modelling using...

    Shazad Jamal Jalal, Tajul Ariffin Musa, ... Muhammad Faiz Pa’suya in Pure and Applied Geophysics
    Article 26 July 2022
  3. Geoid model determination for the Hellenic area “Hellas Geoid 2023”

    The latest geoid model "HELLAS GEOID 2023" (HG2023) derived by the Hellenic Military Geographical Service is the most comprehensive model for the...

    Melissinos Paraskevas, Nestoras Papadopoulos, Dimitrios Ampatzidis in Acta Geodaetica et Geophysica
    Article Open access 25 July 2023
  4. A practical software package for computing gravimetric geoid by the least squares modification of Hotine’s formula

    Today’s geodetic community starts to model an accurate gravimetric geoid within a 5 mm level, which entirely meets the demands of all technical and...

    Ramazan Alpay Abbak, Artu Ellmann, Aydin Ustun in Earth Science Informatics
    Article 15 October 2021
  5. Refinement of gravimetric geoid model by incorporating terrestrial, marine, and airborne gravity using KTH method

    We compute a new gravimetric geoid model for Peninsular Malaysia (PMGG2020) based on the Royal Institute of Technology (KTH) method. The PMGG2020 was...

    Muhammad Faiz Pa’suya, Ami Hassan Md Din, ... Mohammad Hanif Hamden in Arabian Journal of Geosciences
    Article 14 September 2021
  6. Hybrid geoid model over peninsular Malaysia (PMHG2020) using two approaches

    We describe the development of a hybrid geoid model for Peninsular Malaysia, based on two approaches. The first approach is utilising an ordinary...

    Muhammad Faiz Pa’suya, Ami Hassan Md Din, ... Mohd Adhar Abd Samad in Studia Geophysica et Geodaetica
    Article 01 October 2022
  7. Geoid or Quasi-Geoid? A Short Comparison

    This article is a short introduction to the debate on choosing the geoid and orthometric heights or the quasi-geoid and normal heights as the...
    Lars E. Sjöberg, Majid Abrehdary in X Hotine-Marussi Symposium on Mathematical Geodesy
    Conference paper Open access 2023
  8. On the topographic bias by analytical continuation in geoid determination

    We consider the topographic bias in gravimetric geoid determination when analytically downward continuing the disturbing potential from the Earth’s...

    Lars E. Sjöberg in Studia Geophysica et Geodaetica
    Article 25 April 2023
  9. Geoid modeling with least squares modification of Hotine’s integral using gravity disturbances in Turkey

    This study aims to investigate the regional gravimetric geoid modeling accuracy performance using least squares modification of Hotine’s integral...

    Mustafa Serkan Isik, Bihter Erol, ... Serdar Erol in Earth Science Informatics
    Article 16 July 2022
  10. Benefit of classical leveling for geoid-based vertical reference frames

    Classically, vertical reference frames were realized as national or continent-wide networks of geopotential differences derived from geodetic...

    Christian Gerlach, Reiner Rummel in Journal of Geodesy
    Article Open access 28 June 2024
  11. Contribution of GRAV-D airborne gravity to improvement of regional gravimetric geoid modelling in Colorado, USA

    This paper studies the contribution of airborne gravity data to improvement of gravimetric geoid modelling across the mountainous area in Colorado,...

    Matej Varga, Martin Pitoňák, ... Tomislav Bašić in Journal of Geodesy
    Article Open access 19 April 2021
  12. Iterative data assimilation approach for the refinement of marine geoid models using sea surface height and dynamic topography datasets

    The modelling errors of marine geoid models may reach up to a few decimetres in the shorter wavelength spectrum due to gravity data void areas and/or...

    Sander Varbla, Artu Ellmann in Journal of Geodesy
    Article 15 March 2023
  13. Gravimetric Reference of Albania

    Gravimetric works in our country date after the liberation of the country, but initially had a partial character and limited only for mining research.
    Chapter 2023
  14. Gravimetric Geoid Modeling by Stokes and Second Helmert’s Condensation Method in Yogyakarta, Indonesia

    Since the last decade, Indonesia has continuously improved the accuracy of the national geoid model by conducting rapid gravity acquisition using...
    Brian Bramanto, Kosasih Prijatna, ... Arisauna Maulidyan Pahlevi in Geodesy for a Sustainable Earth
    Conference paper 2022
  15. Variance–covariance analysis of two high-resolution regional least-squares quasi-geoid models

    This paper investigates the full variance–covariance (VC) matrix of two high-resolution regional quasi-geoid models, utilizing a spherical radial...

    R. Klees, D. C. Slobbe in Journal of Geodesy
    Article Open access 24 August 2023
  16. Comparative analysis among Asia–Pacific geoid models stored at the ISG repository

    Geoid models have important applications in geosciences as well as engineering, for example, for the conversion from ellipsoidal heights observed by...

    Carlo Iapige De Gaetani, Khulan Batsukh, ... Mirko Reguzzoni in Terrestrial, Atmospheric and Oceanic Sciences
    Article Open access 13 August 2022
  17. Integration of satellite geodetic observations for regional geoid modeling using remove-compute-restore technique

    Advanced satellite geodetic systems have contributed to improving knowledge on changes in global gravity fields in recent years. These systems offer...

    Ikechukwu Kalu, Christopher E. Ndehedehe, ... Aniekan E. Eyoh in Earth Science Informatics
    Article 04 November 2021
  18. Effect of a high-resolution global crustal model on gravimetric geoid determination: a case study in a mountainous region

    A precise gravimetric geoid model is determined by using Stokes formula assuming that there is no topography above the geoid. Then, the geoid model...

    Ramazan Alpay Abbak in Studia Geophysica et Geodaetica
    Article 27 October 2020
  19. Remarks on the Terrain Correction and the Geoid Bias

    The incomplete knowledge of the topographic density distribution causes a topographic bias in all gravimetric geoid determinations. This bias becomes...
    Lars E. Sjöberg, Majid Abrehdary in X Hotine-Marussi Symposium on Mathematical Geodesy
    Conference paper Open access 2023
  20. Gravimetric geoid modeling from the combination of satellite gravity model, terrestrial and airborne gravity data: a case study in the mountainous area, Colorado

    Constructing a high-precision and high-resolution gravimetric geoid model in the mountainous area is a quite challenging task because of the lack of...

    Tao Jiang, Yamin Dang, Chuanyin Zhang in Earth, Planets and Space
    Article Open access 11 December 2020
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