Results 41 to 50 of about 1,485 (184)

SWOT Water Surface Elevation in Herbaceous Wetlands of Florida's Everglades

Geophysical Research Letters, Volume 52, Issue 9, 16 May 2025.
Abstract Observing water level variations in wetlands is important for tracking global water and carbon cycles. The Surface Water and Ocean Topography (SWOT) mission was launched to measure Earth's surface waters, but its performance in vegetated wetlands was unknown.
Solomon Kica, Tamlin M. Pavelsky, Jessica V. Fayne, Brent A. Williams   +3 more
wiley   +1 more source

On accurate geoid modeling: derivation of dirichlet problems that govern geoidal undulations and geoid modeling by means of the finite difference method and a hybrid method [PDF]

Boletim de Ciências Geodésicas, 2014
The geoid is the reference surface used to measure heights (orthometric). These are used to study any mass variability in the Earth system. As the Earth is represented by an oblate spheroid (Ellipsoid), the geoid is determined by geoidal undulations (N) which are the separation between these surfaces.
openaire   +2 more sources

Recent Variability in Fracture Characteristics and Ice Flow of Thwaites Ice Shelf, West Antarctica

Journal of Geophysical Research: Earth Surface, Volume 130, Issue 5, May 2025.
Abstract The rapidly changing Thwaites Ice Shelf is crucial for understanding ice‐shelf dynamical processes and their implications for sea‐level rise from Antarctica. Fractures, particularly their vertical structure, are key to ice‐shelf structural integrity but remain poorly measured.
Shujie Wang, Patrick M. Alexander, Richard B. Alley, Zhengrui Huang, Byron R. Parizek, Amanda G. Willet, Sridhar Anandakrishnan   +6 more
wiley   +1 more source

Detection of Landslide‐Generated Tsunami by Shipborne GNSS Precise Point Positioning

Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract Precise point positioning (PPP) of ships using Global Navigation Satellite System (GNSS) data reveals the precise movements of marine vessels. This method may quantify anomalies in sea surface height with implications for oceanographic monitoring, exploration, and tsunami warning. The GNSS PPP data from the R/V Sikuliaq, a research ship of the
Adam E. Manaster, Anne F. Sheehan, Dara E. Goldberg, Katherine R. Barnhart, Ethan H. Roth   +4 more
wiley   +1 more source

Forward Modeling of Bending Angles With a Two‐Dimensional Operator for GNSS Airborne Radio Occultations in Atmospheric Rivers

Journal of Advances in Modeling Earth Systems, Volume 17, Issue 4, April 2025.
Abstract The Global Navigation Satellite System (GNSS) airborne radio occultation (ARO) technique is used to retrieve profiles of the atmosphere during reconnaissance missions for atmospheric rivers (ARs) on the west coast of the United States. The measurements of refractive bending angle integrate the effects of variations in refractive index over ...
P. Hordyniec, J. S. Haase, M. J. Murphy Jr., B. Cao, A. M. Wilson, I. H. Banos   +5 more
wiley   +1 more source

Along‐Track Marine Geoid Resolution Enhancement With SWOT

Earth and Space Science, Volume 12, Issue 3, March 2025.
Abstract Satellite altimetry has been the major data source for marine geoid determination·and gravity recovery in recent decades. In general, altimetry‐derived geoid and gravity anomaly models are typically released with a 1' × 1' gridding interval. However, their actual spatial resolution is far lower than the nominal ∼2 km level.
Xu Chen, Shengjun Zhang, Ole Baltazar Andersen, Yongjun Jia   +3 more
wiley   +1 more source

Assessment of the Performance of SWOT for Observing the Static Ocean Topography

Geophysical Research Letters, Volume 52, Issue 4, 28 February 2025.
Abstract Marine geodetic references, such as the mean sea surface (MSS), are currently limited by the spatial resolution of conventional satellite altimeters. We analyze the new swath‐altimetry data from the Surface Water and Ocean Topography (SWOT) satellite, to determine the performance of SWOT for mapping the static ocean topography, and possible ...
Bjarke Nilsson, Ole Baltazar Andersen, Per Knudsen   +2 more
wiley   +1 more source

The possibility of the calibration/validation of the GOCE data with the balloon-borne gradiometer [PDF]

Advances in Geosciences, 2003
A new calibration/validation experiment for GOCE mission is proposed. Simultaneously with the satellite mission another gradiometer will be flown on the board of the stratospheric balloon on the altitude 20–40 km.
J. B. Zieliński, M. S. Petrovskaya
doaj  

Species‐By‐Species Pattern Analysis of Coastal Dune Vegetation

Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 2, February 2025.
Abstract Vegetation is crucial for stabilizing and developing coastal dunes. Different plant species exhibit different spatial distributions which reflect their environmental role and adaptation strategy. This study aims to provide a fine‐scale species‐by‐species analysis of vegetation spatial patterns on coastal dunes within the San Rossore–Migliarino–
D. Demichele, E. Belcore, M. Piras, C. Camporeale   +3 more
wiley   +1 more source

Crustal Heterogeneity Onshore Central Spitsbergen: Insights From New Gravity and Vintage Geophysical Data

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 1, January 2025.
Abstract Gravity data provide constraints on lateral subsurface density variations and thus provide crucial insights into the geological evolution of the region. Previously, gravity data from the Norwegian Arctic archipelago of Svalbard comprised an onshore regional gravity database with coarse station spacing of 2–20 km, offshore gravity profiles ...
Kim Senger, Fenna Ammerlaan, Peter Betlem, Marco Brönner, Marie‐Andrée Dumais, Jomar Gellein, Tormod Henningsen, Julian Janocha, Erik P. Johannessen, Jonas Liebsch, Jakob Machleidt, Tereza Mosočiová, Snorre Olaussen, Bo Olofsson, Nil Rodes, Sofia Rylander, Grace E. Shephard, Aleksandra Smyrak‐Sikora, Juan D. Solano‐Acosta, Anna Sterley   +19 more
wiley   +1 more source