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Comparison and Validation of Satellite-Derived Digital Surface/Elevation Models over India
India presents among the world’s most topographically complex geomorphologies, with land elevations ranging from –2 m to + 8586 m and terrain...
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Morphology and phylogenetic placement of Mallomonas vietnamica (Synurales, Chrysophyceae) from China
The newly described chrysophyte, Mallomonas vietnamica , is reported for the first time in China from specimens collected in Guizhou Province, SW...
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Plumbing System of Hunga Tonga Hunga Ha’apai Volcano
The Hunga Tonga Hunga Ha’apai submarine volcano has experienced repeated eruptions in the latest decades. The recent one, in January 2022, released...
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A weighted mean temperature model using principal component analysis for Greenland
The weighted mean temperature ( T m ) is an important parameter to convert the tropospheric zenith wet delay (ZWD) extracted from the global navigation...
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Modeling of vertical gravity gradient by normal gravity field and digital terrain models
Vertical gravity gradient, as a change of gravity with the change in height, is a significant physical quantity used in many geodetic and geophysical...
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A comparison of existing transformation models to improve coordinate conversion between geodetic reference frames in Nigeria
Efficient transformation parameters are key to effective geodetic operations between any systems. With the advancement in technology, an improved...
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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...
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Performance assessment of GEBCO_2023 gridded bathymetric data in selected shallow waters of Indian ocean using the seafloor from ICESat-2 photons
Bathymetric data represents estimated seafloor topography and aids in understanding the intricacies of earth and ocean interaction processes. The...
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An improved tropospheric map** function modeling method for space geodetic techniques
The accuracy of the tropospheric map** functions is greatly influenced by the map** function modeling methods. In the past decades, the ‘fast’...
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Review of early ground deformation observations by electronic distance measurements (EDM) on active Sicilian volcanoes: valuable data and information for long-term analyses
Electronic distance measurements (EDM) represent one of the first methods to detect ground deformation on volcanoes. Used since 1964, they enable...
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On performance of CryoSat-2 altimeter data in deriving marine gravity over the Bay of Bengal
CryoSat-2 was launched successfully in April 2010 and thus has long exceeded its design life, so it is necessary to assess the reliability of gravity...
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Modified atmospheric pressure extrapolation model using ERA5 for geodetic applications
Atmospheric pressure is a widely used meteorological parameter, and surface pressure at antenna height is one of the most important parameters for...
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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...
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Correction of GRACE measurements of the Earth’s moment of inertia (MOI)
The widely used 15-year Gravity Recovery and Climate Experiment (GRACE) data sets do not conserve global total mass. They have a spurious decreasing...
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The sensitivity kernel perspective on GRACE mass change estimates
Mass change inferences from GRACE and GRACE-FO typically involve, first, the preparation of spherical harmonic (SH) datasets on global gravity field...
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Applications and Challenges of GRACE and GRACE Follow-On Satellite Gravimetry
Time-variable gravity measurements from the Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow-On (GRACE-FO) missions have opened up a...
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The Anomalous Potential and Its Determination
The knowledge of the normal potential and related ellipsoidal quantities are not enough to properly treat the problem of relating different types of...