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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Longitudinal dependence of the forecast accuracy of the ionospheric total electron content in the equatorial zone
September 2024
The longitudinal dependence of the behavior of ionospheric parameters has been the subject of a number of works where significant variations are discovered. This also applies to the prediction of the...
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Numerical simulations of earthquake rupture induced by pressure perturbation
September 2024
The subsurface fluid injection can cause pressure increase within faults, leading to earthquake occurrences. However, the factors controlling earthquake rupture due to pressure perturbation remain poorly...
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Numerical simulation for large baseline interferometric imaging altimeter
Available online 21 August 2024
Sea topography information holds significant importance in oceanic research and the climate change detection. Radar imaging altimetry has emerged as the leading approach for global ocean observation,...
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Detection of effective imaging area of SWOT satellite in the Xizang Plateau
Available online 16 August 2024
The Surface Water and Ocean Topography (SWOT) mission represents a collaborative effort between physical oceanography and hydrology fields, aimed at exchanging detailed topography information characterized...
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Assessing GNSS hydrological monitoring capability across different climatic settings in China
Available online 10 August 2024
Vertical position changes of ground-based Global Navigation Satellite System (GNSS) stations have been used to study regional terrestrial water storage (TWS) changes. However, the feasibility is still...
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Assessment of the diurnal and semidiurnal signals induced by monument thermal effect with time series of very short GPS baselines
Available online 6 August 2024
The monument thermal effect (MTE) displacements could result in periodical signals with several millimeters magnitudes in the vertical and horizontal GPS position time series. However, the interaction...
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Improved LS+MAR hybrid method to UT1-UTC ultra-short-term prediction by using first-order-difference UT1-UTC
July 2024
Accurate ultra-short-term prediction of the Earth rotation parameters (ERP) holds paramount importance for real-time applications, particularly in reference frame conversion. Among them, diurnal rotation...
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Source model of the 2018 MW7.5 Papua New Guinea earthquake constrained by InSAR measurements: Insight into a blind rupture beneath the New Guinea Highlands
July 2024
The Southern Highland Fold and Thrust Belt (SHFTB), the boundary of the Australian plate and the New Guinea Highland block, significantly contributes to the convergent deformation along the plate boundary....
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Performance evaluation of HY-2 series satellites in marine gravity field recovery
July 2024
China has successfully launched four Haiyang-2 (HY-2) series altimetry satellites. HY-2A has attracted significant attention in gravity field recovery, but the performance of other HY-2 series satellites,...
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Predicting bathymetry based on vertical gravity gradient anomaly and analyses for various influential factors
July 2024
The prediction of bathymetry has advanced significantly with the development of satellite altimetry. However, the majority of its data originate from marine gravity anomaly. In this study, based on...
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Tidal modeling based on satellite altimetry observations of TOPEX/Poseidon, Jason1, Jason2, and Jason3 with high prediction capability: A case study of the Baltic Sea
July 2024
This research aims to optimize the utilization of long-term sea level data from the TOPEX/Poseidon, Jason1, Jason2, and Jason3 altimetry missions for tidal modeling. We generate a time series of along-track...
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Inversion method of deflection of the vertical based on SWOT wide-swath altimeter data
July 2024
The deflection of the vertical (DOV) is the key information in the study of ocean gravity field. However, in most areas, the precision of the prime component of DOV is significantly lower than that...
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Study on the vertical deformations induced by terrestrial water storage changes in Huang-Huai-Hai river basin
July 2024
Terrestrial water storage (TWS) variations are associated with water mass movements, which may cause the deformation displacements of the Global Navigation Satellite System (GNSS) stations. This study...
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Performance analysis of the tight combination of GPS, BDS, GALILEO, and QZSS mixed frequencies signals
July 2024
With the gradual development and modernization of satellite navigation systems, using observation information from multi-GNSS has become one of the hot-spot issues in recent years. Multi-system loose...
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Viscoelastic stress change from the 1931 MW7.8 Fuyun earthquake and its impacts on seismic activity around the Altai mountains
July 2024
The 1931 MW7.8 Fuyun earthquake occurred around the Altai mountains, an intracontinental deformation belt with limited active strain-rate accumulation. To explore whether seismic activity in this deformation...
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Slip rate and interseismic coupling along the Moxi-Shimian segment of the Xianshuihe fault, Eastern Qinghai-Xizang Plateau
July 2024
On September 5, 2022, the Luding M6.8 earthquake occurred in the Moxi-Shimian segment of the Xianshuihe fault, coinciding with the historical ruptured zone of the 1786 Moxi earthquake. Its seismogenic...
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Improved gravity field estimation by incorporating the Tiangong Space Station and next-generation CAI satellite gravity mission
Available online 22 July 2024
The next-generation gravity satellite mission equipped with the Cold Atom Interferometry (CAI) gradiometer has great potential for the Earth's gravity field estimation. Deploying a CAI gradiometer on...
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