Results 61 to 70 of about 1,494 (183)
Impact of datum transformation on local variations of geometric geoid in Niger
Geodesy and Cartography, 2017 In this study, we have conducted an investigation on the impact of the coordinates’ transformation on local variations of geometric geoid. The study area is limited by 1°43′12″ to 4°00′37″ East and 13°01′57″ to 14°31′20″ North in the southwest of the ...
Salissou Ibrahim Yahaya +2 more
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Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.Abstract The origin of a binary‐mixing of DM and EM1 sources for the Cenozoic intraplate volcanism in eastern Northeast China is yet unclear. Seismic attenuation imaging is a tool that can shed light on this question. Here we present the first map of teleseismic P‐wave attenuation across Northeast China.
Hanlin Liu +5 more
wiley +1 more source
Precise geoid computation using Stokes-Helmert's scheme and strict integrals of topographic effects
Geodesy and Geodynamics, 2019 The high-precision local geoid model was computed based on the improved Stokes-Helmert′s boundary value problem and strict integrals of topographic effects. This proposed method involves three steps.
Dongmei Guo, Huiyou He, Peng Sang
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Utilization of the Child Opportunity Index to Evaluate Timing of Tympanostomy Tube Placement
Otolaryngology–Head and Neck Surgery, Volume 174, Issue 2, Page 547-553, February 2026.Abstract Objective Socioeconomic factors including social determinants of health (SDOH) have been implicated in tympanostomy tube (TT) placement and otorrhea. The objective of this study was to determine whether SDOH play a role in delays from presentation to TT placement. Study Design Retrospective cohort study. Setting Tertiary Care Center. Methods A
Molly O. Hunter +8 more
wiley +1 more source
Precision study of satellite levelling with using various models of geoid
E3S Web of Conferences, 2018 The main purpose of this study is comparison of orthometric heights of measuring points and the accuracy of these heights depending on selected geoid model and measurement method. In addition, for better understanding of the essence of conducted research,
Buczyńska Anna
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Geoid heights in Costa Rica, Case of Study: Baseline Along the Central Pacific Zone
Ingeniería, 2019 A precise orthometric height (H) and orthometric height difference (ΔH) determination is required in many fields like construction, geodesy and geophysics.
Alonso Vega Fernádez +2 more
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Evropski in globalni model geoida na območju Slovenije [PDF]
Geodetski Vestnik, 2000 Article deals with geoid models EGM96 and EGG97. Model geoidundulations are verified by means of given geoid undulations that werecomputed from measured orthometric and elipsoidal heights.
Miran Kuhar, Peter Prešeren
doaj
Terrestrial, Atmospheric and Oceanic SciencesThis study aims to introduce the geoid modeling process in Sulawesi and demonstrate the practical issues faced. There are limitations of terrestrial gravity surveys in Sulawesi due to its complex geography, so airborne gravity surveys were conducted from
Hsuan-Chang Shih +4 more
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Geodesy and Geodynamics, 2015 Earth's gravity model (EGM) helps people better determine the figure of Earth, which is generally represented by a global geoid. For a considerable amount of practical applications, people use quasi-geoid to approximate the geoid, thus the quasi-geoid is
Jin Li, WenBin Shen, Xuhua Zhou
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On the topographic effects by Stokes’ formula
Journal of Geodetic Science, 2014 Traditional gravimetric geoid determination relieson Stokes’ formula with removal and restoration of thetopographic effects. It is shown that this solution is in errorof the order of the quasigeoid-to-geoid difference, which ismainly due to incomplete ...
Sjöberg L.E.
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