Results 31 to 40 of about 24,711 (273)

A Comparison of Gravimetric, Isostatic, and Spectral Decomposition Methods for a Possible Enhancement of the Mantle Signature in the Long-Wavelength Geoidal Geometry

Remote Sensing, 2023
A long-wavelength geoidal geometry characterizes the most pronounced features of the Indian Ocean geoid low and the West Pacific and North Atlantic geoid highs.
Robert Tenzer, Wenjin Chen
doaj   +1 more source

Methodology for optimizing heights in the Amsterdam system based on regional and global geoid/quasi-geoid models

Geodesy and Geodynamics
The article presents a methodology for transitioning to the Amsterdam height system based on utilizing global and regional geoid/quasi-geoid models. The study was conducted for the Polish-Ukrainian cross-border sector and expanded to the entire territory
Alina Fedorchuk, Bohdan Dzhuman, Mykhailo Forostyna   +2 more
doaj   +1 more source

Error calibration of quasi-geoidal, normal and ellipsoidal heights of Sweden using variance component estimation

Contributions to Geophysics and Geodesy, 2010
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

Age, Depth, and Residual Depth Anomalies in the North Pacific: Implications for Thermal Models of the Lithosphere and Upper Mantle [PDF]

, 1986
We present an empirical basement depth versus age relation for the North Pacific Ocean, based on the statistical treatment of an ocean-wide gridded data set.
Renkin, Miriam K., Sclater, John G.
core   +1 more source

Adjustment of the Local Gravimetric Network by Several Software Packages Using the Kazan Calibration Line as an Example

Russian Journal of Earth Sciences
Processing and adjustment of gravity measurements represent an essential scientific and practical challenge in geophysics and geodesy, necessitating efficient and reliable software solutions.
Kemerbayev Nurgan, Zhumakanov Ayan, Shkiyeva Maral, Kharisov Ayrat, Islyamova Anel', Sermiagin Roman, Zhanakulova Katima, Kalen Eraly   +7 more
doaj   +1 more source

Mapping Escolar (Lepidocybium flavobrunneum) in Motion: Oceanographic Forces Shaping Its Habitat in the Southwestern South Atlantic, With Insights From Fishers' Perceptions

Fisheries Oceanography, EarlyView.
ABSTRACT Lepidocybium flavobrunneum [Smith, 1843], commonly known as escolar, is a large pelagic species, important for global and local fisheries, particularly in the southwestern South Atlantic Ocean (SWAO), where it constitutes a significant portion of the catch.
Lucas Rodrigues, Maria Grazia Pennino, Paul Gerhard Kinas, David Conesa, Alba Fuster‐Alonso, Andrés Domingo, Rodrigo Forselledo, Federico Mas, Bruno Mourato, Rodrigo Sant'Ana, Vinni Santos Thykjaer, Raquel Virginia Marquez Marquez, Abner Ventura Alves, Mariano Cabanillas‐Torpoco, Rafael Schroeder, Luis Gustavo Cardoso   +15 more
wiley   +1 more source

Joint inversion estimate of regional glacial isostatic adjustment in Antarctica considering a lateral varying Earth structure (ESA STSE Project REGINA) [PDF]

, 2017
A major uncertainty in determining the mass balance of the Antarctic ice sheet from measurements of satellite gravimetry, and to a lesser extent satellite altimetry, is the poorly known correction for the ongoing deformation of the solid Earth caused by
Bamber, Jonathan L., Clarke, Peter J., Drinkwater, Mark R., Horvath, Alexander, Horwath, Martin, Klemann, Volker, Konrad, Hannes, Martín-Español, Alba, Pail, Roland, Petrie, Elizabeth J., Sasgen, Ingo, Wouters, Bert   +11 more
core   +3 more sources

Elevated Asthenospheric Temperature Driving the Partial Melting of Enriched Lithospheric Mantle Feeding the DM‐EM1 Mixing‐Type Magmatism of the Jingpohu Volcano in Eastern NE China: Evidence From Teleseismic P‐Wave Attenuation

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, Qingju Wu, Maximiliano Bezada, Shunping Pei, Joseph S. Byrnes, Wei Liu   +5 more
wiley   +1 more source

ETH-GQS: An estimation of geoid-to-quasigeoid separation over Ethiopia

Geodesy and Geodynamics, 2022
The determination of accurate orthometric or normal heights remains one of the main challenges for the geodetic community in Ethiopia. These heights are required for geodetic and geodynamic scientific research as well as for extensive engineering ...
Ephrem Y. Belay, Walyeldeen Godah, Malgorzata Szelachowska, Robert Tenzer   +3 more
doaj   +1 more source

Uranus and Neptune: Shape and Rotation [PDF]

, 2010
Both Uranus and Neptune are thought to have strong zonal winds with velocities of several hundred meters per second. These wind velocities, however, assume solid-body rotation periods based on Voyager 2 measurements of periodic variations in the planets'
Anderson, Desch, French, French, Gerald Schubert, Gurnett, Gurnett, Hammel, Hammel, Helled, Helled, Hubbard, Hubbard, John D. Anderson, Kaula, Lindal, Lindal, Lindal, Lodders, Millis, Ness, Ness, Ravit Helled, Read, Smith, Sromovsky, Stacey, Warwick, Warwick, Zharkov   +29 more
core   +1 more source