Performance of invariants of gravity gradient tensor in matching navigation: A case study in South China Sea
Available online 13 December 2024
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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Performance of GNSS positioning in PPP mode using MADOCA precise products
November 2024
The Global Navigation Satellite System (GNSS) is widely utilized for accurate positioning. One commonly applied method to obtain precise coordinate estimates is by implementing the relative positioning...
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Improved artificial bee colony algorithm for pressure source parameter inversion of Sakurajima volcano from InSAR data
November 2024
A novel artificial bee colony algorithm was introduced for the eruption event of the Sakurajima volcano on August 9, 2020, to invert the magma source characteristics below the volcano based on the point...
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Exploring the topographical pattern beneath the water surface: Global bathymetric volume-area-height curves (BVAH) of inland surface water bodies
November 2024
Global inland surface water bodies such as lakes and reservoirs, important components of the hydrosphere and ecosphere, are increasingly affected by climate change. Generating bathymetric volume-area-height...
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Singular spectrum analysis for the time-variable seasonal signals from GPS in Yunnan Province
November 2024
Studying the seasonal deformation in GPS time series is important to interpreting geophysical contributors and identifying unmodeled and mismodeled seasonal signals. Traditional seasonal signal extraction...
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The earth's rotation-dominated seismicity preceding the 2023 MW7.8 Gaziantep, Türkiye, earthquake
November 2024
For earthquakes (M ≥ 4.0) occurring along and around the East Anatolian fault zone and the Dead Sea fault zone within ten years immediately before the MW7.8 Gaziantep earthquake, Türkiye, of February...
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The present-day kinematics of the Tianshan orogenic belt constrained by GPS velocities
November 2024
Since the late Cenozoic, the reactivated Tianshan orogenic belt has accommodated crustal shortening exceeding 200 km, primarily due to the far-field effects of the India-Eurasia plate collision. However,...
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A data-adaptive network design for the regional gravity field modelling using spherical radial basis functions
November 2024
A high-precision regional gravity field model is significant in various geodesy applications. In the field of modelling regional gravity fields, the spherical radial basis functions (SRBFs) approach...
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Effects of errors-in-variables on the internal and external reliability measures
November 2024
The reliability theory has been an important element of the classical geodetic adjustment theory and methods in the linear Gauss-Markov model. Although errors-in-variables (EIV) models have been intensively...
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Possible effects of selecting different station distributions in the optimal sequence estimation method
November 2024
Since the inception of the optimal sequence estimation (OSE) method, various research teams have substantiated its efficacy as the optimal stacking technique for handling array data, leading to its...
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Comparative analysis of recent hydrological models and an attempt to generate new combined products for monitoring terrestrial water storage change
November 2024
Hydrological models are crucial for characterizing large-scale water quantity variations and correcting GNSS reference station vertical displacements. We evaluated the robustness of multiple models,...
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Numerical simulation of seismic stress evolution in the Lajishan Fault zone on the northeastern margin of the Qinghai-Xizang Plateau
Available online 22 October 2024
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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Dynamic changes of gravity field before the Luding MS6.8 earthquake and its crustal material migration characteristics
Available online 22 October 2024
On September 5, 2022, an earthquake of magnitude MS6.8 occurred in Luding County, Sichuan Province. This earthquake occurred at the key part of the southeast-clockwise extrusion of material on the eastern...
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Dynamically and economically updating the National Elevation Datum with the assistance of InSAR: A case study in North China Plain
Available online 18 October 2024
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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Impact of atmospheric noise on observing the slichter mode
Available online 10 October 2024
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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Integrating geodetic infrastructures for GNSS displacements analysis in Chile: A case study with REDGEOMIN (2019–2022)
Available online 7 October 2024
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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Interseismic and coseismic deformation of the 2023 Jishishan MS6.2 earthquake determined by GNSS and InSAR data
Available online 7 October 2024
Quantitative studies on the interseismic and coseismic deformation characteristics and analysis of the interplay between the seismogenic fault and neighboring faults are crucial for understanding the...
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On calculating glacial isostatic adjustment
September 2024
Modeling the earth's fluid and elastic response to the melting of the glaciers of the last ice age is the most direct way to infer the earth's radial viscosity profile. Here, we compare two methods...
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An alternative 2D ICEEMDAN-based denoising method and its application in processing magnetic anomaly data
September 2024
Due to environmental noise and human factors, magnetic data collected in the field often contain various noises and interferences that significantly affect the subsequent data processing and interpretation....
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Quantifying the 2022 drought and spatiotemporal evolution of TWSA in the Dongting Lake Basin over the past two decades
September 2024
Extreme hydrological events such as droughts and floods have been increasingly influenced by abnormal atmospheric disturbances caused by human activity and global warming. The Dongting Lake Basin (DLB)...
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The effect of topographic density variations on the geoid and orthometric heights in Hong Kong
September 2024
Utilizing the adopted average topographic density of 2670 kg/m3 in the reduction of gravity anomalies introduces errors attributed to topographic density variations, which consequently affect geoid...
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Effects of Andrade and Burgers rheologies on glacial isostatic adjustment modeling in Antarctica
September 2024
Variations in ice mass deform the Earth and modify its gravity field, a process known as Glacial Isostatic Adjustment (GIA). GIA in Antarctica remains poorly constrained due to the cumulative effect...
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Efficient 2-D MUSIC algorithm for super-resolution moving target tracking based on an FMCW radar
September 2024
Frequency modulated continuous wave (FMCW) radar is an advantageous sensor scheme for target estimation and environmental perception. However, existing algorithms based on discrete Fourier transform...
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A new method for deriving broad-band polar motion geodetic excitations
September 2024
While the geodetic excitation χ(t) of polar motion p(t) is essential to improve our understanding of global mass redistributions and relative motions with respect to the terrestrial frame, the widely...
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Assessment of the three representative empirical models for zenith tropospheric delay (ZTD) using the CMONOC data
September 2024
The precise correction of atmospheric zenith tropospheric delay (ZTD) is significant for the Global Navigation Satellite System (GNSS) performance regarding positioning accuracy and convergence time....
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