Results 31 to 40 of about 215,132 (193)

Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)

open access: yesPerspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki   +5 more
wiley   +1 more source

Russian section of GGOS: Network status and progress

open access: yesGeodesy and Geodynamics, 2017
Establishment of the Russian section in the framework of Global Geodetic Observing System (GGOS) is under progress. New components of “Quasar” network observatories, which are included into GGOS global network as core stations, are presented.
A. Ipatov   +4 more
doaj   +1 more source

Beyond Directions: Symmetry‐Aware Rotation Sets for Triaxial Diffusion Encoding by Geometric Filter Optimization

open access: yesMagnetic Resonance in Medicine, Volume 96, Issue 5, Page 2489-2504, November 2026.
ABSTRACT Purpose To improve the accuracy of diffusion‐weighted powder average signals for diffusion encoding with arbitrary b‐tensors. Methods We identify an intrinsic dihedral (D2) symmetry of diffusion signals for arbitrary diffusion encoding, which defines their natural signal space (a quotient of 3D rotations). Based on this, we propose a method to
Sune Nørhøj Jespersen   +1 more
wiley   +1 more source

Long Series of GNSS Integrated Precipitable Water as a Climate Change Indicator

open access: yesReports on Geodesy and Geoinformatics, 2015
This paper investigates information potential contained in tropospheric delay product for selected International GNSS Service (IGS) stations in climatologic research.
Kruczyk Michał
doaj   +1 more source

Feasibility study applied to mapping tidal effects in the Pannonian basin – An effort to check location dependencies at μGal level

open access: yesGeodesy and Geodynamics, 2018
This paper summarizes the main instrumental and methodological points of the tidal research which was performed in the framework of the National Scientific Research Fund Project K101603.
G. Papp   +7 more
doaj   +1 more source

An Operational Daily‐Filtered Dominion Radio Astrophysical Observatory F10.7 cm Solar Radio Flux Product

open access: yesEarth and Space Science, Volume 13, Issue 9, September 2026.
Abstract The F10.7 solar radio flux density, or F10.7, is a disk‐integrated measure of the Sun's total emission at 10.7 cm (2.8 GHz) and is a widely‐used proxy of solar activity. F10.7 emissions primarily originate from the Sun's upper chromosphere and lower corona. High‐frequency, transient “radio bursts” can dramatically increase the magnitude of F10.
C. Kuester   +3 more
wiley   +1 more source

A review of the lunar laser ranging technique and contribution of timing systems

open access: yesSouth African Journal of Science, 2016
The lunar laser ranging (LLR) technique is based on the two-way time-of-flight of laser pulses from an earth station to the retroreflectors that are located on the surface of the moon.
Cilence Munghemezulu   +2 more
doaj   +1 more source

Deformation Patterns and Rupture Mechanisms of the Longitudinal Valley Fault in Eastern Taiwan: Insights From Three‐Dimensional Discrete Element Modeling

open access: yesEarth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Active faults exhibit complex geometric features, with rupture processes controlled by the coupled effects of tectonic loading, fault geometry, and internal displacement heterogeneity. To elucidate the interrelationship between long‐term deformation, stress redistribution, and rupture evolution, we constructed a three‐dimensional numerical ...
X. F. Guo, Y. Aoki, J. H. Li
wiley   +1 more source

Astronomy & Astrophysics (CAUCASUS)-VOLUME 3

open access: yes, 2020
The III volume of Journal “Astronomy & Astrophysics (Caucasus)” was dedicated to the 110th Anniversary of Academician Eugene Kharadze. Academician Evgene Kharadze Vice - President of International Union of Astronomy (1976-82) I would like to give you
(Caucasus)”, Astronomy & Astrophysics
core   +1 more source

An Adaptive Method for Star Extraction from Digital Astronomical Images [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2010
Celestial positioning has been used for navigation purposes for many years. Stars as the extra-terrestrial benchmarks provide unique opportunity in absolute point positioning.
M. A. Sharifi   +2 more
doaj  

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