Methodology for optimizing heights in the Amsterdam system based on regional and global geoid/quasi-geoid models
Available online 11 July 2025
The article presents a methodology for transitioning to the Amsterdam height system based on utilizing global and regional geoid/quasi-geoid models. The study was conducted for the Polish-Ukrainian...
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Coseismic deformation and slip distribution of the 2023 Jishishan Mw6.0 earthquake based on InSAR measurements
Available online 8 July 2025
A 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...
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Present-day crustal deformation in central Sumatra, Indonesia derived from GNSS observation and tectonic implications
Available online 28 June 2025
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...
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Basement structure across Renun segment near Toba caldera inferred from the gravity anomaly: Implication for potential earthquake rupture barrier
Available online 28 June 2025
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...
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Strain rate of Boso slow slip events related to seismic activity after 2011 using GNSS data
Available online 23 June 2025
The March 11, 2011, MW9.0 Tohoku-Oki earthquake, in Japan, caused rapid strain release near the epicenter, while the Boso Peninsula, located farther away, experienced stress redistribution, leading...
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On-orbit thermal environment analysis of the optical bench of a new generation of gravity measurement satellites
Available online 23 June 2025
The new generation of gravity measurement satellites will use high-precision inter-satellite laser interferometry technology to measure the gravity field. The heat flow outside the satellite's orbit...
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Advances in time-frequency based geopotential determination
Available online 17 June 2025
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...
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Evaluating Euler pole parameters for the north American terrestrial reference frame of 2022
Available online 16 June 2025
Euler Pole Parameters (EPPs) were estimated for the new plate-fixed North American Terrestrial Reference Frame of 2022 (NATRF2022) based on the spherical model of Earth using different sets of continuously...
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GNSS imaging of vertical crustal deformation in Chinese mainland derived from decade-long continuous GNSS measurements
Available online 14 June 2025
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...
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Improved sparrow search algorithm for inversion of geometric parameters of earthquake source faults
Available online 11 June 2025
With the continuous improvement of the accuracy of geodetic deformation data, the inversion of seismic source parameters puts forward a higher demand for nonlinear inversion algorithms. In this research,...
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Static stress implications for Kīlauea volcano activity after the 2018 Hawai'i earthquake
Available online 3 June 2025
The MW6.9 thrust-faulting earthquake in Hawai'i on May 4, 2018, occurred near the Kīlauea shield volcano. We use 57-day-long continuous Global Positioning System (cGPS) data and 6-day-long semi-continuous...
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Performance of invariants of gravity gradient tensor in matching navigation: A case study in South China Sea
May 2025
Choosing appropriate background field data is crucial for gravity field matching navigation. Current research mainly uses gravity anomaly data or gravity gradient data as background fields. However,...
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Constructing seasonal records of Ross Ice Shelf elevation changes using ICESat altimetry data
May 2025
Ice shelves are important passageways for ice sheets flowing into the ocean. Through iceberg calving and basal melting, ice shelves exert considerable influence on the mass balance of the Antarctic...
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Real-time earthquake magnitude prediction using designed machine learning ensemble trained on real and CTGAN generated synthetic data
May 2025
The earthquake early warning (EEW) system provides advance notice of potentially damaging ground shaking. In EEW, early estimation of magnitude is crucial for timely rescue operations. A set of thirty-four...
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Numerical simulation of seismic stress evolution in the Lajishan Fault zone on the northeastern margin of the Qinghai-Xizang Plateau
May 2025
To analyze the triggering relationship of historical earthquakes to the 2023 Jishishan earthquake and estimate the seismic risk in the adjacent region after the earthquake, we calculate the evolution...
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Review of SAR imaging geodesy for glacier velocity monitoring
May 2025
The surface velocity is one of the most important characteristics of glaciers. Monitoring and mapping glacier movements are of great significance for the studies of sea-level rise, glacier mass balance...
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Impact of atmospheric noise on observing the slichter mode
May 2025
Atmospheric pressure fluctuations can result in long-period noise (T > 10 s) in gravity observations, and it is crucial to remove the atmospheric pressure effect for observing weak dynamic signals using...
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Dynamically and economically updating the National Elevation Datum with the assistance of InSAR: A case study in North China Plain
May 2025
Land subsidence significantly impacts the accuracy of the National Elevation Datum in China. In order to solve this issue, a dynamic and economical way was proposed to update the National Elevation...
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Integrating geodetic infrastructures for GNSS displacements analysis in Chile: A case study with REDGEOMIN (2019–2022)
May 2025
This article investigates crustal displacements in Chile between 2019 and 2022, a region marked by the interaction between three Plates. Utilizing the Red Geodésica para la Minería (Geodetic Network...
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Reconstruction of ionospheric VTEC using empirical orthogonal function and its performance during extreme geomagnetic storm
May 2025
This paper demonstrates that the spatial distribution of the ionospheric TEC over the Indian region can be reconstructed with appreciable accuracy using minimal numbers of empirical orthogonal functions...
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Resolution analysis of the gravity survey network in the middle and south sections of Tan-Lu fault and recent changes in the gravity field
May 2025
In this paper, we computed the fractal dimension of three survey areas within the central and southern sections of the Tan-Lu fault zone using fractal analysis. Subsequently, simulations were conducted...
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Assessing machine learning models to generate permafrost distribution map in Solukhumbu, Nepal
May 2025
Permafrost is one of the key components of the cryosphere. Previous studies show that the extent of permafrost has shifted to higher elevations in Nepal. These researches, however, has been hampered...
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Along-dipping variations in fault geometry influencing shallow-slip-deficit during the 2021 MW7.4 Maduo earthquake
Available online 30 May 2025
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...
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Seismotectonic analysis of the December 2023 MS6.2 Jishishan earthquake: Insights from high-resolution DEM, aftershock relocation, and fault modeling
Available online 29 May 2025
The December 18, 2023, MS6.2 Jishishan earthquake occurred along the northeastern margin of the Qinghai-Xizang Plateau within the Laji–Jishi Shan Fault Zone (LJSFZ), a complex thrust-dominated tectonic...
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Evaluating global precipitable water vapor products from four public reanalysis using radiosonde data
Available online 27 May 2025
Precipitable Water Vapor (PWV) is a crucial parameter for short-term climate warnings and long-term climate monitoring. Due to their seamless spatiotemporal coverage, atmospheric reanalysis products...
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