Sound speed profile-free GNSS-acoustic positioning using extended cubic spline function
July 2026
Acoustic range error is the dominant error affecting the positioning accuracy of GNSS-Acoustics (GNSS-A). To reduce the impact, the sound speed profile (SSP) measurement data are typically used. However,...
Wavelet-based fusion of altimetry-derived and shipborne gravity data around Egypt
July 2026
This study presents a wavelet-based fusion approach for enhancing the marine gravity field over the Red and Mediterranean Seas around Egypt by integrating altimetry-derived free-air gravity (AFAG) and...
An exploratory satellite gravity approach for detecting the modern marine sedimentary processes in the Bohai Central Basin
July 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...
The impact of thermal expansion on nonlinear vertical variations of GNSS reference stations in Chinese mainland
July 2026
The thermoelastic deformation of Global Navigation Satellite System (GNSS) monuments and foundations significantly contributes to the vertical nonlinear variations observed in the GNSS coordinate time...
Spatiotemporal variation analysis of groundwater storage in the southeastern mountainous region of China based on GRACE data
July 2026
The southeastern mountainous (SEM) region of China has experienced significant fluctuations in groundwater levels since the early 21st century. Monitoring groundwater storage (GWS) dynamics and analyzing...
Accuracy analysis of topography estimation from geoid heights and vertical gravity and vertical gravity gradient
July 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...
Research on ultra-short-term prediction of polar motion using least square and spatial attention mechanism model
July 2026
This study proposes a novel hybrid model integrating least squares (LS) with a spatial attention mechanism (SAM) for 1–10 days polar motion prediction. The LS method primarily predicts principal components,...
Low-cost PPP/visual/IMU fused positioning method based on factor graph optimization under complex urban environments
July 2026
With the development and application of autonomous driving technology, high-precision positioning and navigation services have played an increasingly important role in complex urban environments. The...
Modeling of the vertical gravity gradient in the territory of the Republic of Kazakhstan: Methods, Comparison and Evaluation of Accuracy
July 2026
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...
Coseismic slip distribution inversion by least squares: A Bayesian method for uncertainty-constrained regularization
July 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...
Implication from the 2023 MW6.0 Jishishan earthquake: Complex fault structure beneath the Jishi Shan, northeastern Qinghai-Xizang Plateau
July 2026
Although the Lajishan-Jishishan fault zone is considered as one of the most tectonically active orogenic belts along the northeastern margin of the Qinghai-Xizang Plateau, its present-day slip behavior...
Integrating multi-source altimetry observations for gravity anomaly derivation in the South China Sea
July 2026
The Ka-band radar interferometer (KaRIn) on the Surface Water and Ocean Topography (SWOT) satellite provides wide-swath measurements, advancing satellite altimetry to enable high-resolution two-dimensional...
Coseismic Rupture, Aftershock Migration and Stress Triggering in the 2025 Balıkesir, Turkey Earthquake Sequence
Available online 18 July 2026
The 2025 Balıkesir earthquake sequence in western Turkey, consisting of an MW6.1 event on 10 August and an MW6.0 event on 27 October, occurred within an extensional transition zone between the southern...
Decadal prediction of terrestrial water storage and sea-level change using physics-informed neural networks
Available online 16 July 2026
Terrestrial Water Storage (TWS) represents all sources of water on land, including polar ice sheets (Greenland and Antarctica), mountain glaciers, and hydrological components. Understanding the spatio-temporal...
Correlation analysis between sunspot activity and ENSO
Available online 9 July 2026
The El Niño-Southern Oscillation (ENSO) is the most prominent mode of interannual climate variability in the tropical Pacific, exerting significant influences on global climate patterns and ecosystems....
Gravity and structural architecture of the western North Patagonian region, Argentina
Available online 7 July 2026
We study the western North Patagonian region of Argentina using gravity and geological methods. The first derivative of the Bouguer anomaly shows a gravity high west of the Limay River and Arroyo Comallo,...
The characteristics of the vertical deflection in the Chinese mainland using GRACE time-varying gravity field
Available online 2 July 2026
The deflection of the vertical (DOV) reflects the discrepancy between the Earth's actual gravity field and reference models (e.g., WGS84, GRS80). The Chinese mainland exhibits highly complex topography...
Fault geometry and slip distribution of the 2025 MW5.8 Xinjiang Aheqi earthquake revealed by InSAR observations
Available online 1 July 2026
On December 4, 2025, an MW5.8 earthquake struck Aheqi County, located in the southern Tian Shan, approximately 24 km from the epicenter of the 2024 MW7.0 Wushi earthquake. This proximity has prompted...
Tectonic salient characterization based on GNSS data: The case of the Eastern Betic Tectonic Arc in the western Mediterranean
Available online 1 July 2026
Here we present the results of a geodetic analysis of several continuous and episodic stations located in SE Spain. Based on this analysis, we propose a new deformation field for the Eastern Betic Tectonic...
Interannual variations in GNSS vertical displacement related to snow depth: A case study at Tateyama Murodo, Toyama, Japan (2006–2023)
Available online 1 July 2026
Redistribution of surface mass associated with atmospheric pressure, ocean tides, land water storage, and snow causes elastic deformation of the Earth's crust that can be detected by the Global Navigation...
The sliding friction coefficient and the strong earthquake recurrence interval of the Longmenshan fault zone revealed by numerical simulations
Available online 30 June 2026
Following the Wenchuan MS8.0 earthquake, numerous studies have sought to determine the sliding friction coefficient of the Longmenshan fault (LMSF) zone. However, results have varied widely (0.02–0.61),...
Deep learning-based time-evolving magnitude estimation for strong earthquakes using high-rate GNSS data
Available online 30 June 2026
Waveform clipping, sensor tilting, and saturation in traditional seismic data often lead to systematic underestimation in rapid magnitude estimation for strong earthquakes. High-rate Global Navigation...
Numerical experiment on downward continuation of airborne gravity in the Qinghai-Xizang Plateau
Available online 30 June 2026
The Downward continuation is a critical step in the processing of airborne gravity data. Nevertheless, it tends to amplify errors and makes it difficult to obtain stable and reliable solutions. Here,...
Unveiling hydrological drought patterns in coastal Texas through integrated GNSS and InSAR observations
Available online 30 June 2026
Benefiting from significant advances in modern geodetic technologies, Global Navigation Satellite System (GNSS) measurements provide a new means to quantify terrestrial water storage (TWS) and to reveal...
Calculation and evaluation of ZTD based on ensemble forecast data and AI-based weather model from ECMWF
Available online 27 June 2026
Accurate estimation and forecasting of zenith tropospheric delay (ZTD) are vital for satellite Earth observation, atmospheric monitoring, and meteorological applications. Ensemble forecasts could provide...
