G1.5 | Recent Developments in Geodetic Theory and Gravity Field Estimation
EDI
Recent Developments in Geodetic Theory and Gravity Field Estimation
Convener: Petr Holota | Co-conveners: Hussein Abd-Elmotaal, Nico Sneeuw, Xiaopeng Li, Robert Cunderlik, Georgios Panou, Lisa DalheimerECSECS
Orals
| Wed, 26 Apr, 14:00–18:00 (CEST)
 
Room 0.14
Posters on site
| Attendance Thu, 27 Apr, 16:15–18:00 (CEST)
 
Hall X2
Posters virtual
| Attendance Thu, 27 Apr, 16:15–18:00 (CEST)
 
vHall GMPV/G/GD/SM
Orals |
Wed, 14:00
Posters on site |
Thu, 16:15
Posters virtual
Thu, 16:15
Remarkable advances over recent years give evidence that geodesy today develops under a broad spectrum of interactions, including theory, science, engineering, technology, observation, and practice-oriented services. Geodetic science accumulates significant results in studies towards classical geodetic problems and problems that only emerged or gained new interest, in many cases as a consequence of synergistic activities in geodesy and tremendous advances in the instrumentations and computational facilities. In-depth studies progressed in parallel with investigations that mean a broadening of the traditional core of geodesy. The scope of the session is conceived with a certain degree of freedom, though it is primarily intended to provide a forum for all investigations and results of theoretical and methodological nature.

We welcome contributions concerning problems of reference frames, gravity field studies, dynamics and rotation of the Earth, positioning, but also presentations surpassing frontiers of these topics. We invite presentations illustrating the use of mathematical and numerical methods in solving geodetic problems, showing advances in mathematical modeling, estimating parameters, simulating relations and systems, using high-performance computations, and discussing methods for exploiting data of new and existing satellite missions. Presentations showing mathematical and physical research directly motivated by geodetic need, practice and ties to other disciplines are welcome. In parallel to theory oriented results also examples illustrating the use of new methods on real data in various branches of geodetic science and practice are very much solicited in this session.

Part of the session will focus on the practical solution of various formulations of geodetic boundary-value problems to yield precise local and regional high-resolution (quasi)geoid models. Contributions describing recent developments in theory, processing methods, downward continuation of satellite & airborne data, treatment of altimetry and shipborne data, terrain modeling, software development and the combination of gravity data with other signals of the gravity field for a precise local and regional gravity field determination are welcome. Topics such as the comparison of methods and results, the interpretation of residuals and geoid applications to satellite altimetry, oceanography, vertical datums & local and regional geospatial height registration are of a special interest.

Orals: Wed, 26 Apr | Room 0.14

Chairpersons: Nico Sneeuw, Hussein Abd-Elmotaal, Robert Cunderlik
14:00–14:05
5-minute convener introduction
Recent Developments in Geodetic Theory
EGU23-6147
|
ECS
|
solicited
|
Highlight
|
On-site presentation
Satellite and terrestrial spherical harmonic coefficients of the external gravitational potential do not match
Blazej Bucha and Fernando Sanso
EGU23-4062
|
On-site presentation
High-precision GNSS-R Altimetry based on Carrier Phase Measurement Combination
Tianhe Xu et al.
EGU23-3093
|
On-site presentation
Modeling random isotropic vector fields on the sphere
Paul Rebischung and Kevin Gobron
EGU23-1219
|
ECS
|
On-site presentation
Plane curves on the Earth’s triaxial ellipsoid
Christina Filaretou and Georgios Panou
Coffee break
Chairpersons: Hussein Abd-Elmotaal, Nico Sneeuw, Xiaopeng Li
16:15–16:20
Gravity Field Estimation (Geoid Determination)
EGU23-4219
|
On-site presentation
Inverse Absolute Height Weighting in the Highest Order Levelling Networks
Vasil Cvetkov and Slaveyko Gospodinov
EGU23-17520
|
solicited
|
Highlight
|
On-site presentation
On the correct definition and use of normal heights in geodesy  
Pavel Novak and Fernando Sansò
EGU23-3363
|
Virtual presentation
Integrating NGS GRAV-D gravity observations into high-resolution global models
Daniel Roman et al.
EGU23-6403
|
ECS
|
Virtual presentation
Harmonic Correction in Regional Gravity Field Determination
Meng Yang et al.
EGU23-4935
|
Virtual presentation
Numerical experiences on using the RTM method in quasi-geoid modeling
Miao Lin et al.
EGU23-9678
|
Highlight
|
On-site presentation
The first Gravity Geoid Model for Israel
Hezi Sarid et al.
EGU23-13423
|
On-site presentation
A regional gravimetric geoid model in support of the GeoNetGNSS CORS network
Georgios S. Vergos et al.

Posters on site: Thu, 27 Apr, 16:15–18:00 | Hall X2

Chairpersons: Nico Sneeuw, Hussein Abd-Elmotaal, Georgios Panou
Recent Developments in Geodetic Theory
EGU23-11560
|
Highlight
|
On-site presentation
Divergence of the gradient, solution domain geometry and successive approximations in gravity field studies
(withdrawn)
Petr Holota
EGU23-12798
|
On-site presentation
The ACA algorithm implemented into the direct BEM approach to reduce its numerical complexity
Róbert Čunderlík and Martin Bejdák
EGU23-3815
|
On-site presentation
New scheme for numerical computation of high degree Legendre polynomials
Georgios Panou et al.
EGU23-1459
|
ECS
|
On-site presentation
Transformation of Cartesian to geodetic coordinates on a triaxial ellipsoid using approximations
Anastasios Tsafaras and Georgios Panou
Gravity Field Estimation (Geoid Determination)
EGU23-1813
|
Highlight
|
On-site presentation
Experiment of filling the data gaps for better geoid determination: Case Study for Egypt (Africa)
Hussein Abd-Elmotaal and Norbert Kühtreiber
EGU23-2895
|
On-site presentation
Technical Improvements on Local Geoid Model Computation
Xiaopeng Li
EGU23-10030
|
ECS
|
On-site presentation
The experimental xDEM2022 and its uses for geoid modelling at NGS
Jordan Krcmaric and Xiaopeng Li

Posters virtual: Thu, 27 Apr, 16:15–18:00 | vHall GMPV/G/GD/SM

Chairpersons: Robert Cunderlik, Hussein Abd-Elmotaal, Lisa Dalheimer
Recent Developments in Geodetic Theory
EGU23-3334
|
Highlight
|
Virtual presentation
High-precision calculating the normal height as the coordinate line's length
Viktor Popadyev and Samandar Rakhmonov