Studia Geophysica et Geodaetica最新文献

{"title":"Optimized Ensemble Method of SVMD-SVR+BiLSTM for Short-Term Forecasting of Earth Rotation Parameters","authors":"Lihua Li,&nbsp;Donglin Huang,&nbsp;Haowei Shi,&nbsp;Xu Zhang,&nbsp;Kehao Yu,&nbsp;Shuhui Li","doi":"10.1007/s11200-026-00030-9","DOIUrl":"10.1007/s11200-026-00030-9","url":null,"abstract":"<div><p>Earth rotation parameters (ERP), including the polar motion components in the X and Y directions (PMX and PMY) and the difference between universal time 1 and coordinated universal time (UT1-UTC), contain important geodynamic information, and their accurate short-term prediction is of great significance. In this study, an optimized hybrid forecasting method integrating successive variational mode decomposition (SVMD), support vector regression (SVR), and bidirectional long short-term memory (BiLSTM) is proposed for short-term ERP prediction. First, the original ERP series are decomposed by SVMD into several intrinsic mode functions and a residual term. Then, the augmented Dickey-Fuller test and multiscale fuzzy entropy are used to evaluate the stationarity and complexity of the decomposed components, respectively. Based on these results, non-stationary or low-complexity components are assigned to the SVR branch, whereas stationary components with higher complexity are assigned to the BiLSTM branch. The proposed method was trained and evaluated using IERS 20 C04 ERP data from 2016 to 2026. Compared with the best reported results of the 2nd Earth Orientation Parameters Prediction Comparison Campaign, the 30-day prediction results showed the mean absolute error (MAE) improvements reach 25% for PMX, 59% for PMY, and 40% for UT1-UTC, respectively. Improvements are also observed for PMY at the 1-day and 10-day horizons and for PMX at the 10-day horizon. These results indicate that the proposed method can capture the multi-scale characteristics of ERP series and be effective for the short-term ERP prediction.</p></div>","PeriodicalId":22001,"journal":{"name":"Studia Geophysica et Geodaetica","volume":"70 2","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149034979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"State-Space Kalman Smoothing of Airborne Gravity Data with Colored Noise","authors":"Xiaopeng Li","doi":"10.1007/s11200-026-00029-2","DOIUrl":"10.1007/s11200-026-00029-2","url":null,"abstract":"<div><p>Airborne gravimetry is a key technique for regional gravity field recovery where high quality surface gravity data is sparse, yet its accuracy is fundamentally limited by high-frequency measurement noise and temporally correlated instrumental errors along flight trajectories. Conventional processing often relies on low-pass filters, such as recursive Gaussian filters used in the well-known Gravity for the Redefinition of the American Vertical Datum (GRAV-D) project, to suppress the measurement noise, at the expense of signal attenuation and reduced spatial resolution. In this study, a state-space Kalman filtering and smoothing framework is designed for airborne gravity disturbance estimates that explicitly models colored measurement noise using an embedded autoregressive (AR) process. The proposed method is evaluated against a nominal triple-pass Gaussian filter commonly used to process scalar airborne gravity data in the GRAV-D project. Using scalar gravity data collected over the Colorado area that covers the Geoid Slope Validation Survey 2017 (GSVS-17) lines, this study demonstrates that gravity disturbances processed with the Kalman smoother yield a local gravity field model whose derived height anomalies achieve an accuracy of approximately 3.0 cm, improving upon the 3.8 cm accuracy obtained using Gaussian-filtered data alone. These results indicate that a mathematically rigorous, model-based state-space modeling with explicit representation of temporally correlated measurement noise provides a measurable improvement in local quasi-geoid models augmented solely by airborne gravity data (without the inclusion of local surface gravity data), while better preserving geophysical signal content across a broad range of wavelengths.</p></div>","PeriodicalId":22001,"journal":{"name":"Studia Geophysica et Geodaetica","volume":"70 2","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149034876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of Ray and Full-Wave SH-Wave Seismograms in Attenuating Layered Media","authors":"Miłosz Wcisło,&nbsp;Ivan Pšenčík,&nbsp;José M. Carcione","doi":"10.1007/s11200-026-00026-5","DOIUrl":"10.1007/s11200-026-00026-5","url":null,"abstract":"<div><p>An approximate but accurate calculation of seismic wavefields in smooth (without interfaces) isotropic or anisotropic, inhomogeneous, attenuating media using ray theory is possible with the aid of the so-called weak-attenuation concept (WAC). In WAC, the attenuating medium is regarded as a perturbation of an elastic reference medium. The extension of this concept to layered media was prevented for a long time by problems with evaluation of the reflection and transmission (R/T) coefficients of plane waves in attenuating media, and by the role of inhomogeneous waves in this process. The R/T coefficients represent a fundamental part of ray calculations in layered media. It turned out that the problems are related to a limited applicability of the correspondence principle to reflection and transmission. Recently, this problem was solved by the use of WAC. It opened the way to the calculation of seismic wave fields in layered, attenuating media. Before such a calculation, it is necessary to solve several important problems. It is well known that the incidence of a wave at an interface separating attenuative media generates inhomogeneous body waves. These waves are not implicitly included in WAC. Therefore, it is important to find out how their absence affects the results of ray calculations with WAC. In this paper, we check the accuracy of such calculations by comparing synthetic ray seismograms with full-wave seismograms, which are considered to be an accurate reference. For simplicity and transparency, we focus on the problem of reflection and transmission of SH-waves in 2D horizontally layered isotropic attenuating media, since SH-waves are decoupled from P–SV waves and thus allow a simpler treatment. Another reason for the use of SH-waves is the availability of the full-wave code designed for SH-waves. Use of more complicated structures and other types of waves would lead to artefacts, which would mask the effects of attenuation. The results of the comparison show that outside singular regions, such as the critical region or the vicinity of the Brewster angle, ray theory with WAC provides results that closely approximate those obtained using full-wave modeling. Applicability of WAC to other types of waves and more realistic structures is thus open.</p></div>","PeriodicalId":22001,"journal":{"name":"Studia Geophysica et Geodaetica","volume":"70 2","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148926644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deflection of the Vertical from Vertical Gravity Gradient using Spherical Numerical Integration Expression and Planar Closed-Form Formula","authors":"Jingyu Bu,&nbsp;Zhourun Ye,&nbsp;Xinghui Liang,&nbsp;Lintao Liu,&nbsp;Shaofeng Bian,&nbsp;Jinzhao Liu,&nbsp;Ming Hu,&nbsp;Wei Zhao","doi":"10.1007/s11200-026-00028-3","DOIUrl":"10.1007/s11200-026-00028-3","url":null,"abstract":"<div><p>The deflection of the vertical (DOV), defined by the angle between the plumb line and the normal to the reference ellipsoid, plays a crucial role in geodesy and geophysics, particularly in geodetic data processing, geoid determination, and gravity field studies. Compared with traditional astro-geodetic methods, the determination of the DOV from gravity observations is more efficient and practically feasible. Moreover, gravity gradients contain richer high-frequency (short-wavelength) information than gravity anomalies. Therefore, they provide a promising data source for high-resolution DOV determination. In this context, this study employs three methods to compute the DOV from the vertical component of gravity gradients: the spherical numerical integration formulation, the planar numerical integration formulation, and the planar closed-form solution. Starting from the spherical formulation, a planar approximation is derived, and a corresponding closed-form solution under this approximation is further developed. Two test regions are selected: one bounded by [0°E, 2°E] in longitude and [0°S, 2°S] in latitude, and another in [150°W, 152°W] [0°, 2°N]. Closed‑loop tests based on the EGM2008 model confirm the theoretical consistency of the three methods. In a separate validation, the results were compared with DOV data from the Scripps Institution of Oceanography (SIO) model. The strong agreement between the computed DOV and the SIO model confirms the accuracy of the algorithms proposed in this study. A comparison of computational times with implementations based on the spherical formulation further demonstrates the high efficiency of the planar approximation. In addition, Graphics Processing Unit (GPU) parallel computing was applied to accelerate the computations. This efficient approach provides a valuable alternative for high-resolution DOV determination.</p></div>","PeriodicalId":22001,"journal":{"name":"Studia Geophysica et Geodaetica","volume":"70 2","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148750531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The ECD-BIE Estimation Theorem in Spectral Form","authors":"Peter J. G. Teunissen","doi":"10.1007/s11200-026-00027-4","DOIUrl":"10.1007/s11200-026-00027-4","url":null,"abstract":"<div><p>The theory of best integer equivariant (BIE) estimation provides the minimum mean squared error estimator within the class of integer equivariant (IE) estimators and has found increasing application in mixed-integer models such as those arising in carrier-phase GNSS positioning. Recent developments extended BIE estimation to the broader class of elliptically contoured distributions (ECDs), thereby allowing the use of heavier-tailed models. In this contribution, we further develop this theory by deriving a spectral form of the ECD-BIE theorem. Building on the periodic representation of IE-estimators, whereby each estimator can be expressed as a correction to the best linear unbiased estimator (BLUE) that is integer-periodic in the ambiguity domain, we show how this spatial representation can be transformed into a Fourier-based spectral form. This establishes twin representations of ECD-BIE estimators in both spatial and spectral domains. The relative merits of these formulations are discussed and illustrated for the normal, contaminated normal, and multivariate Student distributions.</p></div>","PeriodicalId":22001,"journal":{"name":"Studia Geophysica et Geodaetica","volume":"70 2","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11200-026-00027-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148614387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of DEM and Gravity Field Representation Strategy On Regional Gravity and Height Anomaly Recovery By the Spectral Enhancement Method","authors":"Miao Lin,&nbsp;Song Cheng,&nbsp;Minjia Liu,&nbsp;Yuming Shi,&nbsp;Jianjun Zhu","doi":"10.1007/s11200-026-00019-4","DOIUrl":"10.1007/s11200-026-00019-4","url":null,"abstract":"<div><p>This study investigated the impact of using different digital elevation models (DEMs) and gravity field representation strategies on regional gravity and height anomaly recovery by the spectral enhancement method (SEM), which combines 2160-degree global geopotential model (GGM) functionals with residual terrain modeling (RTM) corrections. Seven global DEMs with 1″ and 3″ resolutions were compared, and the effect of moving average (MA) reference topography resolution was evaluated. In addition to the traditional representation strategy of the SEM (SEM_D) that directly computes GGM functionals and RTM corrections on evaluation points, two alternative strategies were introduced: SEM_S (direct computation of GGM functionals and interpolation of RTM corrections from one grid model) and SEM_I (interpolation of both components from two grid models). Key factors including grid source, grid resolution, and grid combination were systematically analyzed. Numerical tests conducted in the Colorado and Auvergne test areas demonstrated that DEM selection has a minor influence on recovering gravity anomalies and no effect on height anomalies, with 3″ DEMs preferred. An MA reference topography resolution of 6’-7’ is recommended, rather than the commonly used 5’. Grid source selection shows negligible influence on both SEM_S and SEM_I. When grid resolution is at least 15″, SEM_S and SEM_I provide gravity anomaly solutions comparable to SEM_D, while 1’ grid is sufficient for height anomalies. SEM_I using a grid combination scheme of 5’ (GGM) + 15″ (RTM) yields better gravity anomaly solutions than SEM_D and SEM_S, whereas the scheme of 5’ + 1’ is advised for height anomalies. Replacing RTM corrections linked to the MA reference topography by those from the SRTM2gravity model improves gravity anomaly results in both SEM_S and SEM_I. Additionally, downsampling the 3″ SRTM2gravity model to 15″ still provides comparable gravity anomaly solutions, and in SEM_I, a grid combination scheme of 1’ + 3″ is suggested.</p></div>","PeriodicalId":22001,"journal":{"name":"Studia Geophysica et Geodaetica","volume":"70 2","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148281772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New Research Perspectives in Light of Dense Cross-Border Experiments in West Bohemia and Vogtland Regions","authors":"Pınar Büyükakpınar,&nbsp;Torsten Dahm,&nbsp;Marius Isken,&nbsp;Jana Doubravová,&nbsp;Dana Křížová,&nbsp;Marcel van Laaten,&nbsp;Josef Vlček,&nbsp;Catherine Alexandrakis-Zieger,&nbsp;Sofia-Katerina Kufner,&nbsp;Jakub Klicpera,&nbsp;Heiko Woith,&nbsp;Jan Mrlina,&nbsp;Sebastian Hainzl,&nbsp;Pavla Hrubcová,&nbsp;Tomáš Fischer,&nbsp;Matthias Ohrnberger,&nbsp;Ralf Bauz,&nbsp;Stefan Mikulla,&nbsp;Joachim Wassermann,&nbsp;Christoph Sens-Schönfelder,&nbsp;Jan Burjánek","doi":"10.1007/s11200-026-00025-6","DOIUrl":"10.1007/s11200-026-00025-6","url":null,"abstract":"<div><p>The Eger Large-N International Seismic Experiment (ELISE) is a major cross-border project deploying a temporary network of over 300 broadband and short-period seismic stations in the West Bohemia/Vogtland region, located at the border of Czechia and Germany. This experiment offers new research opportunities in one of the most seismically and geodynamically active intraplate regions in Europe, characterized by recurrent earthquake swarms resulting from magmatic crustal fluids and mantle CO₂ degassing processes. The collision and thrusting of Variscan tectonic domains have created a unique natural laboratory to investigate how ancient structures influence present-day magmatic processes and fluid–rock interactions. ELISE aims to address fundamental questions regarding the origin of swarms, their dynamics, and hazard potential, as well as their relationship with geodynamic activities in the region. The stations of this dense array have been operating since August 2025 and will record for up to 18 months. They will enable high-resolution imaging of crustal structures through the use of high-resolution earthquake locations, ambient noise tomography, receiver function analyses, and local earthquake tomography. Based on previous experience, we hypothesize that intensifying seismic networks will reveal at least ten times more local earthquakes, ultimately clarifying the mechanisms of swarm earthquakes by constraining fluid migration paths and structural and geological boundary conditions. Better earthquake locations, together with high-resolution subsurface models of different quantities, will provide new insights into the interaction between tectonic and fluid-induced seismicity revealing the possible role of carbonate brines and melts in the formation of swarms. This will improve our understanding of geodynamic and fluid-magma interactions in intraplate tectonic settings. This paper provides an overview of the ongoing ELISE experiment. It outlines its goals, scientific framework, and expected contributions.</p></div>","PeriodicalId":22001,"journal":{"name":"Studia Geophysica et Geodaetica","volume":"70 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11200-026-00025-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148172285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultra-Short Term Prediction of Polar Motion Based on NAR Neural Network","authors":"Fei Wu,&nbsp;Lintao Tao,&nbsp;Yufeng Dai,&nbsp;Leyang Wang,&nbsp;Qingchen Cao","doi":"10.1007/s11200-026-00024-7","DOIUrl":"10.1007/s11200-026-00024-7","url":null,"abstract":"<div><p>The prediction products of the polar motion parameters play a crucial role in precision orbit determination, high-precision positioning, timing services and other fields. In this paper, we proposed employing the Nonlinear Auto Regressive (NAR) neural network model for polar motion prediction. The network parameters are determined through the cross-validation method, leading to the establishment of the NAR neural network prediction model. The EOP 20 C04 product provided by the International Earth Rotation and Reference Systems Service (IERS) was utilized as experimental data, and 365 sets of ultra-fast forecasts spanning 1—7 days were conducted for the polar motion parameters. Furthermore, we also discussed the optimal amount of data for NAR, it was found that the training accuracy is optimal when using a 10-year dataset. Compared with the LS + AR model, the proposed method achieves an average improvement of 5.82% and a maximum improvement of 8.24% in the X direction, and an average improvement of 9.06% and a maximum improvement of 13.65% in the Y direction. Compared with the IERS Bulletin A and other methods, the prediction accuracy in the X and Y directions has been improved to a certain extent under different forecast spans.</p></div>","PeriodicalId":22001,"journal":{"name":"Studia Geophysica et Geodaetica","volume":"70 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148173281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vertical ascent and lateral extrusion: emplacement of the Ortiz Mountain intrusion, Cerros Del Rio volcanic field, New Mexico","authors":"Michael S. Petronis,&nbsp;Bakary Kone,&nbsp;Filip Tomek,&nbsp;Jennifer Lindline","doi":"10.1007/s11200-026-00017-6","DOIUrl":"10.1007/s11200-026-00017-6","url":null,"abstract":"<div><p>The processes governing magma ascent from subvolcanic reservoirs to emplacement at shallow crustal levels continue to pose a central challenge in volcanological research. To contribute to this long-standing scientific debate, we examine the vent-dike-lava flow system of the Ortiz Mountain volcanic complex, which intrudes Pliocene Rio Grande rift sediments, basaltic volcanic rocks, and older Oligocene sediments. Our study investigates the magmatic plumbing architecture, focusing on the relationships between an exposed intrusion and the surface volcanic features. Twenty sampling sites were collected for anisotropy of magnetic susceptibility (AMS), paleomagnetic, rock magnetic, and structural studies to characterize the magma emplacement, remanence behavior, and the overall vent-dike-lava flow system. Paleomagnetic data from half the sampling sites yield high-quality demagnetization data that are well grouped at the site level. The site mean directions of these locations are discordant to the Pliocene reversed polarity expected field direction. Thin section and rock magnetic experiments constrain the magnetic mineralogy to a cubic Fe-Ti oxide, likely titanomagnetite, some maghemite, minor Fe-sulfides, and traces of titanomaghemite. The magnetic domain size ranges from pseudosingle to multidomain grains. AMS ellipsoids are predominantly oblate, indicating magma flow directions that are either steeply inclined or sub-horizontal and directed away from the central vent. Combined field observations and laboratory data suggest initial magma ascent through a centralized vertical conduit, contributing to cone construction. A disruption in the plumbing system led to southwestward dike propagation (~800 m), which ultimately breached the surface and erupted as a lava flow. The resulting volcanic construct illustrates a vent-dike-lava flow system, where subsurface magmatic processes are spatially and temporally linked to surface volcanic features. The results underscore the importance of integrated field and laboratory approaches to reveal the hidden plumbing architecture of small volcanic systems as well as the dynamic pathways magma follows from depth to eruption.</p></div>","PeriodicalId":22001,"journal":{"name":"Studia Geophysica et Geodaetica","volume":"70 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148009556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Remote Sensing With Gravity Strike Angles From EIGEN-6C4 to Search for Prospective Hydrocarbon Deposits in Ukraine and the Black Sea","authors":"Jaroslav Klokočník,&nbsp;Jan Kostelecký,&nbsp;Aleš Bezděk","doi":"10.1007/s11200-024-0944-3","DOIUrl":"10.1007/s11200-024-0944-3","url":null,"abstract":"<div><p>The gravity aspects (Marussi tensor, gravity invariants, their special ratio, strike angles, and virtual deformations) have been tested and proven as efficient to describe various geological features and stresses in the Earth (impact craters, volcanoes, ground water or hydrocarbon deposits). Here, we utilise the gravity strike angles to check known localities and extend existing terrestrial estimates (coming mainly from the USGS) of hydrocarbon occurrences in Ukraine, Crimea, and the Black Sea. The agreement between terrestrial and satellite data is good. Our method is completely independent of any traditional approach. It is a remote sensing method providing a preliminary, cheap indicative approach to identify density/porosity anomalies that may be responsible for further hydrocarbon occurrences in those areas.</p></div>","PeriodicalId":22001,"journal":{"name":"Studia Geophysica et Geodaetica","volume":"70 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11200-024-0944-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148009062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}