Results 41 to 50 of about 9,341 (230)
Errors of estimated parameters in an adjustment process should be scaled according to the size of the estimated residuals or misclosures. After computing a quasigeoid (geoid), its biases and tilts, due to existence of systematic errors in the ...
Mehdi ESHAGH
doaj +1 more source
ABSTRACT Understanding fine‐scale surface changes is crucial for quantifying ecosystem dynamics and detecting landscape changes. Palsas, comparably small peatland elevations with an ice‐rich permafrost core, undergo natural cycles of growth and degradation. They can also serve as indicators of climate change in subarctic regions. Because they typically
Alexander Störmer +3 more
wiley +1 more source
Evaluation and assimilation of Arctic Weather Satellite data in the AROME‐Arctic forecast system
The Arctic Weather Satellite (AWS), launched in August 2024, is a prototype for the future EPS–Sterna constellation of small satellites carrying an innovative microwave sounder. We present the first assessment of AWS in the regional AROME‐Arctic numerical weather prediction system, covering post‐launch calibration results and the impact of AWS ...
Stéphanie Guedj +2 more
wiley +1 more source
Geoid model determination for the Hellenic area “Hellas Geoid 2023”
AbstractThe latest geoid model "HELLAS GEOID 2023" (HG2023) derived by the Hellenic Military Geographical Service is the most comprehensive model for the entire Hellenic area. Long-term gravity data, orthometric and geometric heights, seabed topography and a high-resolution digital terrain model were implemented in the calculations. Data evaluation and
Melissinos Paraskevas +2 more
openaire +1 more source
Holocene shoreline displacement and the impact of the Storegga tsunami on Hinnøya, northern Norway
The Holocene relative sea‐level (RSL) history of Norway's largest island, Hinnøya, has been investigated in detail, using sediment records from 25 isolation basins. The sediments were analysed for macrofossil and phytoplankton content, which served as the basis for identifying marine–lacustrine transitions, that is isolation contacts. Terrestrial plant
Anders Romundset +5 more
wiley +1 more source
The Brazilian gravimetric geoid: MAPGEO2004
The Brazilian geoid model MAPGEO2004 is limited by 7°N and 35°S in latitude and 34°W and 75°W in longitude with 10' resolution. Fast Fourier Transform (FFT) technique was used to undertake the modified Stokes integral.
de Matos, Ana Cristina Oliveira Cancoro +2 more
core +1 more source
How the Indian Ocean Geoid Low Was Formed
The origin of the Earth's lowest geoid, the Indian Ocean geoid low (IOGL) has been controversial. The geoid predicted from present‐day tomography models has shown that mid to upper mantle hot anomalies are integral in generating the IOGL.
Debanjan Pal, Attreyee Ghosh
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A new dataset for studying tides and compound flood hazards in Australian estuaries. The dataset brings together disparate national and state agency records to improve coverage of estuarine systems, including upstream tidal rivers that are often excluded from ocean‐focused datasets.
Ben S. Hague +6 more
wiley +1 more source
Dataset of Coastline Positions for Sandy Beaches of England and Wales Derived Using Remote Sensing
Two decades (1999–2020) of annual coastline position dataset were generated using COASTSAT toolkit for sandy beaches of England and Wales. The dataset consists of annual coastline position coordinates in the format of GeoJSON and Tabular files. ABSTRACT This article presents a dataset of coastline positions, comprising annual sandy coastline detections
Pavitra Kumar, Nicoletta Leonardi
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Abstract Very Low Earth Orbit (VLEO) satellite platforms and quantum‐optical sensing technologies may provide new observation approaches for improving Earth's static gravity field models. This study conceptually assesses their potential contribution through a two‐tier closed‐loop simulation framework.
Wenming Chen +6 more
wiley +1 more source

