Missing value imputation of long-term GNSS monitoring time series using a graph-conditioned diffusion model
Available online 13 October 2026
GNSS monitoring time series often suffer from missing values caused by receiver failures, equipment maintenance, power outages, and other uncontrollable factors, which degrade data quality and affect...
A 3D seismotectonic model constrained by a deep learning-based earthquake catalog: Implications for fault activity and buried structure detection in the northern section of Xiannvshan Fault Zone
Available online 13 October 2026
This study integrates two-phase dense array observations and the LOC-FLOW machine-learning-based workflow to construct a high-precision microseismic catalogue for the northern section of the Xiannvshan...
Geopotential and Vertical Displacement Effects of Time-Variable Geophysical Processes on Chronometric Leveling
Available online 13 October 2026
High-precision optical clock comparisons use gravitational redshift to determine geopotential differences and equivalent normal-height differences between stations, offering a new approach to height...
Analysis of the impact of large ring laser gyroscope (RLG) stationary noise on universal time (UT1) resolution
Available online 13 October 2026
Universal Time (UT1) is a critical conversion parameter between the terrestrial and celestial reference systems, with important applications in satellite navigation, deep-space exploration, and related...
Real-time atmospheric refraction coefficient determination using ERA5 reanalysis data for line-of-sight visibility and geodetic applications
Available online 10 October 2026
Atmospheric refraction is a fundamental source of systematic error in geodetic surveying, EDM, and line-of-sight visibility analysis. Practitioners assume κ = 0.13, a mid-twentieth-century average inappropriate...
Exploiting Melbourne-Wübbena-derived wide-lane priors for BDS-2/BDS-3 multi-frequency single-epoch positioning
Available online 10 October 2026
Reliable ambiguity resolution is critical for rapid BDS short baseline positioning and deformation monitoring. This study proposes a BDS-2/BDS-3 multi-frequency single-epoch ambiguity resolution method...
Centimeter-level land-sea geoid for Wanshan Radar Altimeter Calibration Site: Modeling and validation
September 2026
High-precision geoid modeling for the Wanshan Radar Altimeter Calibration Site (the world’s fifth operational base and China’s first) is fundamental to satellite calibration and ocean dynamic research....
Antenna environment effects on linear combination phase residuals: Pattern types and a novel metric
September 2026
This study investigates the relationship between elevation angle-dependent mean (elmean) ionosphere-free phase residuals and the antenna environment in permanent GNSS stations, as well as the noise...
ZTD model construction and its performance for large height difference Xizang by fusing ground-based GNSS and ERA5
September 2026
To address the limited performance of global zenith tropospheric delay (ZTD) models in representing strong elevation effects and local climatic variability over complex terrain in Xizang, a 0.25° ×...
Evaluation of the impact of the biomass on GRACE-borne total water storage estimates in the Amazon Basin
September 2026
The Amazon Basin plays a central role in regulating global carbon and water cycles, yet the interaction between forest biomass changes and terrestrial water storage (TWS) remains insufficiently constrained....
An interpretable KAN approach for triple-frequency BDS cycle-slip detection and repair
September 2026
We propose a triple-frequency Beidou navigation satellite system (BDS) cycle-slip detection and repair method that balances accuracy and interpretability. It addresses the limited sensitivity of traditional...
Global morphology and dynamic characteristics of ionospheric sporadic E layers based on COSMIC-2 observations
September 2026
Sporadic E (Es) layers, transient thin structures (90–130 km) with enhanced electron density in the ionosphere, exert significant impacts on radio wave propagation. This study systematically unveils...
Analysis of current crustal movement and strain characteristics of Guangxi ε-type tectonic system based on GNSS observations
September 2026
The current crustal movement patterns and dynamic mechanisms of the Guangxi ε-type tectonic system remain unclear. Based on data from 128 GNSS observation stations in Guangxi and neighboring areas from...
Numerical calculation and accuracy analysis of the highly oscillatory integral in the complete geodetic excitation solution of Earth's polar motion equation
September 2026
Variations in polar motion (PM) observed through space geodetic techniques imply comprehensive information on geophysical excitation. Traditional geodetic excitation series derived from PM observations...
Coseismic deformation and slip distribution of the 2025 MW7.1 Dingri earthquake constrained by GNSS and InSAR observations
September 2026
On January 7, 2025, an MW7.1 earthquake struck Dingri County, Xigaze City, southern Xizang. The epicenter was located on the western side of the Dengme Co Fault (DMCF) in the southern segment of the...
Factors controlling induced earthquakes in Oklahoma
September 2026
Injection-induced earthquake (IIE) caused by human activities has become a global problem due to the increased magnitude and frequency in recent decades. However, not all injections can induce earthquakes,...
A regularization algorithm for improving the reliability of TRF datum parameters
September 2026
The parameter estimation of the adjustment model of the Terrestrial Reference Frame (TRF) can be regarded as a rank-deficient problem. However, traditional internal constraints potentially treat the...
Estimating the velocities of space-geodetic stations: the case of DORIS
September 2026
Velocity estimates derived from time series of space geodetic station positions are influenced by seasonal signals and noise present in these time series. Therefore, the insufficiently modeled trend...
Changes in permafrost distribution and geo-hazard susceptibility in the central Himalayas: Insights from machine learning and remote sensing techniques
Available online 25 September 2026
High-altitude Himalayan permafrost is rapidly degrading under sustained climate warming. This degradation generates increasing environmental and infrastructure hazards that require urgent, evidence-based...
Mechanism-dependent scaling of GNSS peak ground displacement for rapid earthquake magnitude estimation
Available online 10 September 2026
Peak ground displacement (PGD) derived from high-rate Global Navigation Satellite System (GNSS) observations has become a key metric for rapid moment magnitude estimation in earthquake early warning...
Post-seismic deformation associated with the 2020 MW7.0 Samos (Aegean Sea) earthquake constrained by InSAR and GNSS observations
Available online 8 September 2026
This study investigates the post-seismic deformation following the October 30, 2020 MW7.0 Samos earthquake using Copernicus Sentinel-1 Interferometric Synthetic Aperture Radar (InSAR) time series and...
Improvements to regional geoid modelling using airborne vector gravimetry
Available online 28 August 2026
Airborne gravimetry conventionally measures only the vertical component of the gravity vector (scalar gravity), although modern airborne systems can now recover the full three-dimensional gravity vector....
Improving the accuracy of RTK positioning with the multipath hemispherical map model: A case study in GNSS landslide monitoring
Available online 21 August 2026
Landslides are destructive geological disasters that can cause heavy casualties and huge economic losses. Global navigation satellite system (GNSS) can provide real-time, continuous, and high-precision...
Impact of residual terrain modeling (RTM) approaches on local quasigeoid determination in Argentina
Available online 13 August 2026
The determination of the short-wavelength components of the Earth’s gravity field is crucial for regional quasigeoid modeling within the remove-compute-restore (RCR) framework. Residual terrain modeling...