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Geodesy and Geodynamics
Scopus
ISSN 1674-9847 · KeAi Communications Co., Ltd. · 872 artikel di indeks
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Artikel Jurnal
Sensitivity of glacial isostatic adjustment observations on 3D Earths with lateral viscosity variations: A perspective from the Forward problem
Sensitivity of observational data is important in the study of Glacial Isostatic Adjustment (GIA). However, depending on whether sensitivity is used for the Inverse Problem or the Forward Problem, the final formulation and display of the sensitivity kernel will be different. Unfortunately, in the…
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Artikel Jurnal
Residual-based neural network for unmodeled distortions in 2D coordinate transformation
Coordinate transformation models often fail to account for nonlinear and spatially dependent distortions, leading to significant residual errors in geospatial applications. Here, we propose a residual-based neural correction (RBNC) strategy, in which a neural network learns to model only the…
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Artikel Jurnal
A navigation method for IMU/odometer fusion based on horizontal attitude constraints
The current inertial measurement unit (IMU) and odometry fusion navigation algorithms often incorporate non-holonomic constraints (NHC) to obtain three-dimensional velocity in the navigation frame. However, due to the integral nature of the dead reckoning algorithm, the attitude errors of the IMU…
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Artikel Jurnal
Coseismic deformation and slip distribution of the 2023 Jishishan MW6.0 earthquake based on InSAR measurements
An 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 deformation of the Jishishan earthquake in 2023, and the geometric and fine slip distribution…
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Artikel Jurnal
Along-dipping variations in fault geometry influencing shallow-slip-deficit during the 2021 MW7.4 Maduo earthquake
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 earthquakes is still under debate because each earthquake has its unique initial stress condition…
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Artikel Jurnal
InSAR monitoring of large gradient deformation in coalfield and phase unwrapping research
Small Baseline Subset Interferometric Synthetic Aperture Radar (SBAS-InSAR) is widely used for deformation monitoring in mining regions. However, phase unwrapping errors often limit its effectiveness in areas with large-gradient displacements. We propose a novel approach integrating spatiotemporal…
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Artikel Jurnal
Present-day crustal deformation in central Sumatra, Indonesia derived from GNSS observation and tectonic implications
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 continuous GNSS observation data for three years from 2018 to 2021.5. The results show that the…
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Artikel Jurnal
Reappraising the rupture fault of the 1739 M8.0 Pingluo earthquake (Yinchuan Graben) from 3D finite-element elastodynamic modeling
The 1739 M8.0 Pingluo earthquake occurred around the Yinchuan Graben, bounded by the Helan Mountains to the west and the Ordos Block to the east. Seismological observations have shown that surface fault displacement reaches about 2–3 m, mainly by dip-slip motion along the Helanshan Piedmont Fault…
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Artikel Jurnal
Advances in time-frequency based geopotential determination
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 frequency transfer, satellite two-way, satellite common-view, satellite carrier phase, VLBI…
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Artikel Jurnal
Basement structure across Renun segment near Toba caldera inferred from the gravity anomaly: Implication for potential earthquake rupture barrier
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 was applied to discover more features of the basement structure. A land survey of gravity…
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Artikel Jurnal
GNSS imaging of vertical crustal deformation in Chinese mainland derived from decade-long continuous GNSS measurements
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 crustal velocities inferred from GNSS data for Chinese mainland over two decades were rigorously…
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Artikel Jurnal
Shallow coseismic slip and downdip afterslip associated with the 2022 MW6.7 Menyuan (China) earthquake
Investigating the spatial distribution of coseismic rupture, postseismic afterslip, and their interactions is essential for understanding the heterogeneous frictional characteristics of faults, and seismic hazard assessments. This study offers a comprehensive analysis of both seismic and aseismic…
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Artikel Jurnal
A new model for estimating atmospheric weighted mean temperature from radiosonde and multi-mission GNSS radio occultation data
In Global Navigation Satellite System (GNSS) meteorology, the atmospheric weighted mean temperature (Tm) is a critical intermediate parameter for converting zenith wet delay (ZWD) to precipitable water vapor (PWV), essential for accurate atmospheric water content estimation. However, global models…
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Artikel Jurnal
Improving BDS-2/3 satellite clock bias prediction using a TCN-Transformer framework with cross-attention mechanism
Satellite clock bias (SCB) prediction is essential for enhancing the accuracy and reliability of real-time precise point positioning (RT-PPP) in Global Navigation Satellite Systems (GNSS). To address the nonlinearity, non-stationarity, and short-term interruptions of SCB data under complex…
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Artikel Jurnal
Numerical simulation of mid-lower crustal flow model in Sichuan-Yunnan constrained by GNSS observations
The Sichuan-Yunnan region, located at the southeastern margin of the Qinghai-Xizang Plateau, serves as a key channel for the southeastward extrusion of plateau material. The characteristics of crustal deformation and the mechanisms of deep material flow have been central topics of interest in…
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Artikel Jurnal
Impact of flex power on inter- and intra- differential code bias variation
Differential Code Bias (DCB) is the time delays between two different GNSS signals, which is crucial for GNSS positioning. Previous studies have shown that it can be significantly affected by the flex power operations in satellites. This study proposes a 15-min short-term DCB estimation method to…
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Artikel Jurnal
A comparison of hydrological loading deformations from GRACE mascon and load models with reprocessed IGS station positions
Global Navigation Satellite System (GNSS) observations are critical for establishing high-precision terrestrial reference frames (TRF), but the environmental loading effects, particularly hydrological loading deformation (HYLD), remain unaccounted in existing TRF like ITRF2020, limiting their…
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Artikel Jurnal
Sea level rise in the Baltic Sea: Data from Estonian coastal tide gauges over 30 years
This study investigates the rate of sea level rise along the Estonian coastline of the Baltic Sea over the three decades (1993–2022) using tide gauge data and advanced analytical methods. Tide gauge data were analyzed using an open-source software based on the “TG Analysis” method developed by…
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Artikel Jurnal
The 0S0 fundamental mode excited by Sumatra-Andaman earthquake: Parameters assessment using the maximum likelihood method
This paper presents new estimations for all parameters (amplitude, frequency, quality factor, and initial phase) of the 0S0 Earth fundamental mode, which was triggered by the 2004 Sumatra-Andaman earthquake with a magnitude of MW9.1. Sixteen records from the IGETS superconducting gravimeters have…