Results 11 to 20 of about 29,699 (219)

Precise Geoid Determination in the Eastern Swiss Alps Using Geodetic Astronomy and GNSS/Leveling Methods [PDF]

Sensors
Astrogeodetic deflections of the vertical (DoVs) are close indicators of the slope of the geoid. Thus, DoVs observed along horizontal profiles may be integrated to create geoid undulation profiles.
Müge Albayrak, Urs Marti, Daniel Willi, Sébastien Guillaume, Ryan A. Hardy   +4 more
doaj   +2 more sources

Dataset from Scintrex CG-5 gravity meters acquired at the Zhetygen calibration line in KazakhstanZenodo [PDF]

Data in Brief
The article provides a dataset derived from Scintrex CG-5 gravity meter observation files collected during five years of annual measurements along the Zhetygen calibration line utilizing three meters.
Roman Sermiagin, Yeraly Kalen, Nurgan Kemerbayev, Khaini-Kamal Kassymkanova, Nikolay Kosarev, Guzyaliya Mussina, Assel Batalova   +6 more
doaj   +2 more sources

Geoid Undulation Model as Vertical Reference in Indonesia [PDF]

Scientific Data
Indonesia released a new regional geoid model in 2020—the Indonesian Geoid 2020 (INAGEOID2020). It covers the Indonesian region with a spatial resolution of 0.01 × 0.01 degree with the unit in meters.
Arisauna Pahlevi, Agustina Syafarianty, Susilo Susilo, Yustisi Lumban-Gaol, Widy Putra, Bagas Triarahmadhana, Brian Bramanto, Raa Muntaha, King El Fadhila, Febriananda Ladivanov, Harka Amrossalma, Lukman Islam, Dwi Novianto, Safirotul Huda, Tunjung Wismadi, Joni Efendi, Alkindi Ramadhan, Dudy Wijaya, Kosasih Prijatna, Gatot Pramono   +19 more
doaj   +2 more sources

Accuracy Evaluation of Geoid Heights in the National Control Points of South Korea Using High-Degree Geopotential Model

Applied Sciences, 2020
Precise geoid heights are not as important for understanding Earth’s gravity field, but they are important to geodesy itself, since the vertical datum is defined as geoid in a cm-level accuracy.
Kwang Bae Kim, Hong Sik Yun, Ha Jung Choi   +2 more
doaj   +2 more sources

Contribution of GRAV-D airborne gravity to improvement of regional gravimetric geoid modelling in Colorado, USA

Journal of Geodesy, 2021
This paper studies the contribution of airborne gravity data to improvement of gravimetric geoid modelling across the mountainous area in Colorado, USA. First, airborne gravity data was processed, filtered, and downward-continued.
M. Varga, M. Pitoňák, P. Novák, Tomislav Bašić   +3 more
semanticscholar   +1 more source

Empirical comparison between stochastic and deterministic modifiers over the French Auvergne geoid computation test-bed

Survey Review, 2021
Since 2006, several different groups have computed geoid and/or quasigeoid (quasi/geoid) models for the Auvergne test area in central France using various approaches.
R. Goyal, J. Ågren, W. Featherstone, L. Sjöberg, O. Dikshit, N. Balasubramanian   +5 more
semanticscholar   +1 more source

The Indian Ocean Geoid Low at a plume-slab overpass

, 2021
The Indian Ocean Geoid Low (IOGL) appears as a prominent feature if the geoid is, as usual, shown with respect to the Earth's reference shape. However, if it is shown relative to hydrostatic equilibrium, i.e.
B. Steinberger, Samurdhika Rathnayake, E. Kendall   +2 more
semanticscholar   +1 more source

Unified Land–Ocean Quasi-Geoid Computation from Heterogeneous Data Sets Based on Radial Basis Functions

Remote Sensing, 2022
The determination of the land geoid and the marine geoid involves different data sets and calculation strategies. It is a hot issue at present to construct the unified land–ocean quasi-geoid by fusing multi-source data in coastal areas, which is of great
Yusheng Liu, Lizhi Lou
doaj   +1 more source

Analysis of the merged quasi-geoid of neighbouring areas

Geodesy and Geodynamics, 2018
Employing the merged quasi-geoid, we analyses the causes of systematic errors in modelling of quasi-geoid of neighbouring areas in the paper, and the efficient method is introduced to improve the accuracy of quasi-geoid.
Chunxi Guo, Jianliang Nie, Bin Wang, Jie Tian, Guangwei Jiang, Junying Chen, Shijuan Zhang   +6 more
doaj   +1 more source

Polynomial interpolation methods in development of local geoid model

Egyptian Journal of Remote Sensing and Space Sciences, 2018
In geodesy three surfaces, the physical surface of the earth, the geoid and the reference ellipsoid are encountered giving rise to orthometric height (h), the ellipsoidal height (H) and the geoidal separation (N).
Rabindra Kumar Das, Sailesh Samanta, Sujoy Kumar Jana, Robert Rosa   +3 more
doaj   +1 more source