An interpretable KAN approach for triple-frequency BDS cycle-slip detection and repair
Available online 3 February 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...
Shallow coseismic slip and downdip afterslip associated with the 2022 MW6.7 Menyuan (China) earthquake
January 2026
Investigating the spatial distribution of coseismic rupture, postseismic afterslip, and their interactions is essential for understanding the heterogeneous frictional characteristics of faults, and...
Coseismic deformation and slip distribution of the 2023 Jishishan MW6.0 earthquake based on InSAR measurements
January 2026
An MW6.0 earthquake struck Jishishan County in Linxia Prefecture, Gansu Province, on December 18, 2023. In this research, Sentinel-1A satellite radar observations were used to obtain the field of coseismic...
A navigation method for IMU/odometer fusion based on horizontal attitude constraints
January 2026
The current inertial measurement unit (IMU) and odometry fusion navigation algorithms often incorporate non-holonomic constraints (NHC) to obtain three-dimensional velocity in the navigation frame....
GNSS imaging of vertical crustal deformation in Chinese mainland derived from decade-long continuous GNSS measurements
January 2026
To characterize the spatial patterns of vertical crustal movement of Chinese mainland, GNSS imaging technology was applied to map the tectonic deformation of the region. In this study, the vertical...
Along-dipping variations in fault geometry influencing shallow-slip-deficit during the 2021 MW7.4 Maduo earthquake
January 2026
The shallow slip deficit (SSD) during strike-slip earthquakes raises a question of how the strain budget is accommodated over multiple cycles. However, the origin of variable SSD observed in different...
Present-day crustal deformation in central Sumatra, Indonesia derived from GNSS observation and tectonic implications
January 2026
Central Sumatra, Indonesia, is historically known for its significant seismic activities, most notably the devastating 1883 earthquake. In this study, we measured the interseismic deformation using...
Residual-based neural network for unmodeled distortions in 2D coordinate transformation
January 2026
Coordinate transformation models often fail to account for nonlinear and spatially dependent distortions, leading to significant residual errors in geospatial applications. Here, we propose a residual-based...
Reappraising the rupture fault of the 1739 M8.0 Pingluo earthquake (Yinchuan Graben) from 3D finite-element elastodynamic modeling
January 2026
The 1739 M8.0 Pingluo earthquake occurred around the Yinchuan Graben, bounded by the Helan Mountains to the west and the Ordos Block to the east. Seismological observations have shown that surface fault...
InSAR monitoring of large gradient deformation in coalfield and phase unwrapping research
January 2026
Small Baseline Subset Interferometric Synthetic Aperture Radar (SBAS-InSAR) is widely used for deformation monitoring in mining regions. However, phase unwrapping errors often limit its effectiveness...
Advances in time-frequency based geopotential determination
January 2026
The state-of-the-art optical atomic clocks and the time-frequency signal transmission open a fresh field for gravity potential (geopotential) determination. Various methods, including optical fiber...
Sensitivity of glacial isostatic adjustment observations on 3D Earths with lateral viscosity variations: A perspective from the Forward problem
January 2026
Sensitivity of observational data is important in the study of Glacial Isostatic Adjustment (GIA). However, depending on whether sensitivity is used for the Inverse Problem or the Forward Problem, the...
Basement structure across Renun segment near Toba caldera inferred from the gravity anomaly: Implication for potential earthquake rupture barrier
January 2026
Basement structures may influence how ruptures propagate during an earthquake. However, most structural evidence is beneath the thick layer of younger volcanic sediments. In this study, gravity method...
A regularization algorithm for improving the reliability of TRF datum parameters
Available online 30 January 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...
Analysis of current crustal movement and strain characteristics of Guangxi ε-type tectonic system based on GNSS observations
Available online 27 January 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...
Factors controlling induced earthquakes in Oklahoma
Available online 24 January 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,...
Global morphology and dynamic characteristics of ionospheric sporadic E layers based on COSMIC-2 observations
Available online 23 January 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...
Antenna environment effects on linear combination phase residuals: Pattern types and a novel metric
Available online 20 January 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...
Centimeter-level land-sea geoid for Wanshan Radar Altimeter Calibration Site: Modeling and validation
Available online 13 January 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....
Numerical calculation and accuracy analysis of the highly oscillatory integral in the complete geodetic excitation solution of Earth's polar motion equation
Available online 9 January 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 slip distribution inversion by least squares: A Bayesian method for uncertainty-constrained regularization
Available online 8 January 2026
The study investigates the least squares coseismic slip distribution inversion problem combined with the Bayesian method for determining the regularization factor. In response to the significant time...
An exploratory satellite gravity approach for detecting the modern marine sedimentary processes in the Bohai Central Basin
Available online 7 January 2026
Satellite gravity has the capability to cover the entire globe, enabling real-time, high-precision, and periodic monitoring of gravity field changes. We introduce a novel geodesy method to monitor modern...
Accuracy analysis of topography estimation from geoid heights and vertical gravity and vertical gravity gradient
Available online 2 January 2026
This study investigates the accuracy requirements for predicting seafloor topography using anomalies in geoid height (GH), vertical gravity (VG), and vertical gravity gradient (VGG), based on their...
Modeling of the vertical gravity gradient in the territory of the Republic of Kazakhstan: Methods, Comparison and Evaluation of Accuracy
Available online 29 December 2025
This study investigates the modeling of the vertical gravity gradient (VGG) in the Republic of Kazakhstan using three non-instrumental methods: global geopotential models (GGMs), a precomputed VGG grid...
