Results 31 to 40 of about 20,151 (197)

Arctic Sea Ice Freeboard Retrieval from Envisat Altimetry Data

open access: yesRemote Sensing, 2021
Arctic sea ice variations are sensitive to Arctic environmental changes and global changes. Freeboard and thickness are two important parameters in sea ice change research. Satellite altimetry can provide long-time and large-scale sea ice monitoring.
Shengkai Zhang   +5 more
doaj   +1 more source

Validation of Satellite-Only GGMs over the Western Part of North Macedonia [PDF]

open access: yesGeodetski Glasnik
The purpose of this research is to identify the most suitable Global Geopotential Model (GGM) for geoid determination in a specific region of Western Macedonia. The selection of the most suitable GGM eliminates the evaluation of numerous alternatives and
Filip Petrovski
doaj   +1 more source

Centimeter Precision Geoid Model for Jeddah Region (Saudi Arabia)

open access: yesRemote Sensing, 2020
In 2014, the Jeddah Municipality made a call for an estimate of a centimetric precision geoid model to be used for engineering and surveying applications, because the regional geoid model available at that time did not reach a sufficient precision.
Alessandra Borghi   +3 more
doaj   +1 more source

Integration of geospatial data for mapping variation of sediment thickness in the North Sea [PDF]

open access: yesScientific Annals of the Danube Delta Institute, 2020
: The study presents geospatial analysis of the seabed distribution of North Sea sediments. Data include thematic datasets with a high-resolution: GlobSed 5-arc-minute total sediment thickness grid combined with GEBCO regional bathymetric grid and ...
LEMENKOVA Polina
doaj   +1 more source

Gongola Basin Geoid Determination using Isostatic Models and Seismic Reflection Data and Geophysical Interpretation

open access: yesГеофизический журнал, 2016
The application of Stokes’ formula to create geoid undulation requires no masses outside the geoid. Usually, a constant density of 2.67g / cm3 is used in the determination of the geoid which introduces error in the reduced gravity anomalies (Helmert’s ...
E.E. Epuh, J.B. Olaleye, O.G. Omogunloye
doaj   +1 more source

A New Model of Quasigeoid for the Baltic Sea Area

open access: yesRemote Sensing, 2021
The Space Research Centre in Warsaw is participating in the ESA project “Geodetic SAR for Height System Unification and Sea Level Research”. To observe the absolute sea level and enable the unification of the height systems, the physical heights of the ...
Adam Lyszkowicz   +3 more
doaj   +1 more source

Evropski in globalni model geoida na območju Slovenije [PDF]

open access: yesGeodetski 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  

A numerical model for the gravimetric recovery of sub-lithospheric mantle structures

open access: yesGeodesy and Geodynamics, 2020
It is a well-known fact that the long-wavelength terrestrial geoid undulations are mainly attributed to deep mantle density heterogeneities, while more detailed features in the geoid geometry are associated with the topography and the lithospheric ...
Robert Tenzer
doaj   +1 more source

A MATLAB GEODETIC SOFTWARE FOR PROCESSING AIRBORNE LIDAR BATHYMETRY DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
The ability to build three-dimensional models through technologies based on satellite navigation systems GNSS and the continuous development of new sensors, as Airborne Laser Scanning Hydrography (ALH), data acquisition methods and 3D multi-resolution ...
M. Pepe, G. Prezioso
doaj   +1 more source

Moho Depth Estimation Beneath Tibet From Satellite Gravity Data Based on a Condensation Approach

open access: yesEarth and Space Science, 2021
We develop an algorithm for a Moho depth recovery from gravity and gravity gradiometry data and apply this method to estimate the Moho depth beneath the Tibetan Plateau.
Wenjin Chen   +4 more
doaj   +1 more source

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