Real-time SSP inversion combining in-situ SSPs with GNSS-A observations
Available online 23 June 2026
In seafloor geodesy, spatiotemporal variations of sound speed field (SSF) have great impact on positioning accuracy of Global Navigation Satellite System-Acoustic (GNSS-A) techniques. In-situ sound...
Vertical velocity analysis of Sumatra Island corrected by postseismic deformation and fault-locking elastic effects
Available online 23 June 2026
This study evaluates how correcting GNSS vertical velocities using viscoelastic postseismic and fault-locking elastic deformation models changes the interpretation of vertical land motion across Sumatra,...
InSAR deformation observation and seismogenic tectonic analysis of the 2025 Mw 6.0 Afghanistan earthquake
Available online 23 June 2026
An MW6.0 earthquake struck eastern Afghanistan on August 31, 2025, causing significant casualties. We utilized Sentinel-1 SAR images to derive a detailed co-seismic deformation field and inverted for...
Short-term LOD and UT1-UTC Forecast Based on the Holt-Winters Algorithm and Angular Momenta of Global Surficial Geophysical Fluids
Available online 23 June 2026
This paper presents a novel hybrid method named HW-EZ for short- to medium-term forecasting of ΔLOD and UT1-UTC up to 90 days ahead. This method relies on the LOD time series with zonal tidal signals...
Impact of Typhoon Vongfong (2014) on subdaily deformation from GNSS observations
Available online 23 June 2026
Millimeter-level transient displacements caused by extreme natural disasters are crucial for studying their dynamic processes. However, at present, such signals are rarely captured in Chinese mainland...
The 1929 Las Malvinas - Villa Atuel earthquake: a deterministic seismic hazard assessment nearly a century later, Mendoza, Argentina,
Available online 22 June 2026
On May 30, 1929, an earthquake with an estimated ∼MW6.5 caused 30-40 fatalities and destroyed the towns of Las Malvinas and Villa Atuel, in the Andean foreland of Mendoza province, Argentina. This region...
NISAR Observations of Contracting Dike-driven Crustal Deformation During the 2025 Hayli Gubbi Eruption, Afar
Available online 22 June 2026
The November 2025 eruption at Hayli Gubbi volcano in the Danakil Depression, Afar represents the first opportunity to leverage newly operational NISAR data for investigating magmatic processes during...
Present-day Kinematic Features of the Kongur Extensional System at the Northeastern Pamir constrained by GNSS and InSAR Data
Available online 22 June 2026
The Kongur Extensional System (KES) plays a crucial role in accommodating regional crustal deformation of the northeastern Pamir, where sparse geodetic observations limit detailed kinematic characterization....
A new method for the second-order design (SOD) of geodetic networks: improved tornado optimizer with Coriolis force (ITOC) based on traversing population sizes
Available online 22 June 2026
Aiming at the problems that the analytical method for second-order design of geodetic networks is computationally complex and has poor convergence, while the heuristic algorithm is prone to falling...
On the feasibility of detecting coseismic gravity-change signals of the 2023 Turkey double earthquakes from satellite gravimetry
Available online 22 June 2026
This study focuses on the feasibility of detecting coseismic gravity changes from inland large earthquakes using Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) observations. The 2023 Turkey...
A Tropospheric Delay Grid Prediction Model Based on Non-Isotropy Using NARX Neural Network
Available online 22 June 2026
Tropospheric delay is a key error source in high-precision Global Navigation Satellite System (GNSS) positioning. In GNSS data processing, slant path delay (SPD) is usually calculated by multiplying...
Accurate assessment of random walk noise on long-term GNSS time series with RMLE algorithm
Available online 19 June 2026
Accurate characterization of stochastic variations in Global Navigation Satellite System (GNSS) time series is crucial for reliable velocity estimation and uncertainty analysis in geodesy. Among noise...
Lithospheric thermal structure in the South China Sea and its tectonic implications based on magnetic and gravity data
Available online 19 June 2026
Based on gravity anomalies, magnetic anomalies, and surface heat flow data from the South China Sea (SCS) and adjacent regions, this study applies a Curie point depth–constrained thermal modeling approach...
A truncated reweighting nuclear norm regularization model for signal extraction from GNSS coordinate time series
Available online 18 June 2026
Extracting seasonal signals accurately from Global Navigation Satellite System (GNSS) coordinate time series is essential for investigating geophysical processes such as crustal deformation and plate...
Length of day variations caused by terrestrial water storage under climate change and direct human influence
Available online 10 June 2026
We use the hydrological model WaterGAP v2.2e in the range of 1901–2019, incorporating climate forcings and direct human impacts to calculate the hydrologically-induced perturbations in the Earth’s axial...
Unifying the vertical datums for Chinese mainland, Hong Kong and Taiwan of China based on refined gravity field models
Available online 10 June 2026
Achieving centimeter-level or higher-precision vertical datum unification is pivotal for addressing both scientific and societal needs. This study presents a preliminary vertical datums unification...
Contribution of precipitation to terrestrial water storage recovery in the Haihe Basin based on GRACE data
Available online 9 June 2026
Terrestrial water storage (TWS) in the Haihe Basin is vital to ecosystem function and socioeconomic development, but it is subject to disturbances from climate change and human activities. After more...
Development and integrity evaluation of a real-time precise point positioning augmentation service based on characterization of phase residuals
Available online 6 June 2026
In recent years, precise point positioning (PPP) technology has undergone rapid development. In particular, since the International GNSS Service (IGS) began providing multi-system real-time products,...
Analysis of the GNSS deformation of the 2025 Xizang Dingri M6.8 earthquake
May 2026
The study utilized GNSS observation data from 1999 to 2024 to investigate the crustal deformation characteristics near the epicenter of the Dingri earthquake. The results show that the GNSS horizontal...
Post-seismic Coulomb stress simulation and seismic hazard analysis of the 2025 Myanmar MW7.7 earthquake
May 2026
On March 28, 2025, an MW7.7 earthquake struck Myanmar, with the epicenter located in the central segment of the Qinghai–Xizang–Yunnan–Myanmar–Indonesia η-type structure. This region hosts a series of...
Co-seismic gravity changes of the 2004 Sumatra-Andaman earthquake from different releases of GRACE monthly solutions
May 2026
The Gravity Recovery and Climate Experiment (GRACE) Level-2 products, i.e., monthly gravity field models expressed in spheric harmonic (SH) coefficients, have been released in several versions since...
New and updated long-periodic terms in harmonic development of the Earth tide-generating potential
May 2026
We present a new harmonic development of the long-periodic band of the Earth tide-generating potential (TGP). It updates the corresponding part of the previous TGP expansion, KSM03, and includes 38...
The 28 March 2025 MW7.7 Myanmar earthquake revealed by InSAR and POT observations: A supershear event with no shallow slip deficit
May 2026
On 28 March 2025, a shallow devastating strike-slip earthquake with a moment magnitude (MW) of 7.7 struck Mandalay, the second-largest city in Myanmar, marking the most powerful seismic event in this...
Spatiotemporal dynamics of groundwater storage inferred from MT-InSAR and hydraulic head data in Anyang–Puyang Plain
May 2026
Groundwater overexploitation in northern Henan Province has led to significant land subsidence and aquifer degradation. This methodologically driven study proposes a physically consistent framework...
Quality assessment of global gravity field models in the Antarctic region based on airborne gravity data
May 2026
As the largest ice sheet storage area in the world, Antarctica's gravity field characteristics are key data for studying ice sheet mass balance, sea level changes, and polar resource exploration. However,...
