Computers & Geosciences最新文献

筛选
英文 中文
Geo-Hgan: Unsupervised anomaly detection in geochemical data via latent space learning Geo-Hgan:通过潜在空间学习对地球化学数据进行无监督异常检测
IF 4.2 2区 地球科学
Computers & Geosciences Pub Date : 2024-08-14 DOI: 10.1016/j.cageo.2024.105703
Liang Ding , Bainian Chen , Yuelong Zhu , Hai Dong , Guiyang Chan , Pengcheng Zhang
{"title":"Geo-Hgan: Unsupervised anomaly detection in geochemical data via latent space learning","authors":"Liang Ding ,&nbsp;Bainian Chen ,&nbsp;Yuelong Zhu ,&nbsp;Hai Dong ,&nbsp;Guiyang Chan ,&nbsp;Pengcheng Zhang","doi":"10.1016/j.cageo.2024.105703","DOIUrl":"10.1016/j.cageo.2024.105703","url":null,"abstract":"<div><p>Reconstructing geochemical data for anomaly detection using Generative Adversarial Networks (GANs) has become a prevalent method in identifying geochemical anomalies. However, injecting random noise into GANs can induce model instability. To mitigate this issue, we propose a novel anomaly detection model, Geo-Hgan, which integrates a dual adversarial network architecture with a Latent Space Adversarial Module (LSAM) to learn the distribution of latent variables from arbitrary data and optimize the sample reconstruction process, thereby alleviating instability during GAN training. Additionally, an encoder guided by the LSAM-pretrained GAN is employed to extract variational features, facilitating rapid and effective sample mapping into the latent space defined by LSAM. Experimental results demonstrate that under unsupervised conditions, Geo-Hgan achieves an Area Under the Curve (AUC) score of 85% across three geochemical datasets, outperforming similar models in accuracy and reconstruction capabilities. To assess its versatility and generalization ability, we extend Geo-Hgan to anomaly detection tasks in computer vision, where it achieves an average AUC score of 98.7% on the MvtecAD dataset, setting a new state-of-the-art performance in the domain. Furthermore, we propose AnomFilter, a method for setting anomaly thresholds based on the clustering hypothesis. AnomFilter identifies high-confidence anomaly samples identified by Geo-Hgan in the source domain and iteratively transfers them to the target domain. These high-confidence anomaly samples, combined with a small number of known positive samples in the target domain, enhance the accuracy of supervised geochemical anomaly detection in the target domain, which achieved an AUC score of 94%. The utilization of anomaly detection models for sample transfer learning offers a novel perspective for future work.</p></div>","PeriodicalId":55221,"journal":{"name":"Computers & Geosciences","volume":"192 ","pages":"Article 105703"},"PeriodicalIF":4.2,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142012133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Relative dating of fault activity using the principle of cross-cutting relationships: An automated approach 利用交叉关系原则确定断层活动的相对年代:自动化方法
IF 4.2 2区 地球科学
Computers & Geosciences Pub Date : 2024-08-13 DOI: 10.1016/j.cageo.2024.105702
An-Bo Li , Shi-Yu Xu , Xian-Yu Liu , Guo-Nian Lü , Xian-Li Xie , Matthew Fox
{"title":"Relative dating of fault activity using the principle of cross-cutting relationships: An automated approach","authors":"An-Bo Li ,&nbsp;Shi-Yu Xu ,&nbsp;Xian-Yu Liu ,&nbsp;Guo-Nian Lü ,&nbsp;Xian-Li Xie ,&nbsp;Matthew Fox","doi":"10.1016/j.cageo.2024.105702","DOIUrl":"10.1016/j.cageo.2024.105702","url":null,"abstract":"<div><p>Fault dating plays an essential role in understanding deformation histories and modeling the tectonic evolution of orogenic belts. However, direct fault dating methods via different isotope geochronological techniques are expensive, and their use is often limited in many cases, making it essential to develop a fast and low-cost fault relative dating method. Therefore, on the basis of knowledge graphs and knowledge reasoning technology, this study proposes an automatic method to relatively date periods of fault activity using the principle of cross-cutting relationships between faults and strata. The method mainly involves (1) generating the knowledge graph based on a digital geological map; (2) using the knowledge reasoning algorithm to interpret the cross-cutting relationships amongst faults and generating the temporal sequence of fault activity; (3) relative dating the faults based on the cross-cutting relationships between faults and strata; and (4) according to the temporal sequence of fault activity, the relationship between faults can be revealed, and relative dating can be optimized. Results for cases in western Nevada and Qixia Hill of Nanjing illustrate the effectiveness of this method for interpreting the period of fault activity. The accuracy rates of the recognition results in the two cases were 90.24% and 80.77%, respectively, which means that the proposed method has the potential to relatively date fault activity across large areas. The algorithm is an effective supplement to the existing direct method of fault dating. The algorithm can efficiently infer the development sequence and the age of fault activity based on geological maps and geological cross-sections, which is of great significance for understanding regional tectonic history, evaluating earthquake disasters, and modeling tectonic evolution processes.</p></div>","PeriodicalId":55221,"journal":{"name":"Computers & Geosciences","volume":"192 ","pages":"Article 105702"},"PeriodicalIF":4.2,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142002356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Global mantle conductivity imaging using 3-D geomagnetic depth sounding with real earth surface conductivity constraint 利用三维地磁深度探测和真实地球表面电导率约束进行全球地幔电导率成像
IF 4.2 2区 地球科学
Computers & Geosciences Pub Date : 2024-08-10 DOI: 10.1016/j.cageo.2024.105697
Xinpeng Ma , Yunhe Liu , Changchun Yin , Jingru Li , Jun Li , Xiuyan Ren , Shiwen Li
{"title":"Global mantle conductivity imaging using 3-D geomagnetic depth sounding with real earth surface conductivity constraint","authors":"Xinpeng Ma ,&nbsp;Yunhe Liu ,&nbsp;Changchun Yin ,&nbsp;Jingru Li ,&nbsp;Jun Li ,&nbsp;Xiuyan Ren ,&nbsp;Shiwen Li","doi":"10.1016/j.cageo.2024.105697","DOIUrl":"10.1016/j.cageo.2024.105697","url":null,"abstract":"<div><p>The water content in the Earth's interior is of great significance for material circulation and the dynamic evolution of the planet. The water content in mantle minerals significantly affects their conductivities. By measuring the variations in conductivity within the Earth, we can infer the water content in the mantle and study the movement and processes of materials within the Earth. The geomagnetic depth sounding is a widely used method for imaging the mantle conductivity as it has large sounding depth. However, the ocean induction effects can seriously impact geomagnetic data that can't be well corrected using conventional methods. Here, we present a novel three-dimensional inversion method for geomagnetic depth sounding to overcome the ocean induction effects by directly adopt the real earth surface conductivity into the inverse model. In this method, the unstructured tetrahedral grids are used to represent the model in multi-scale and the vector finite-element method is adopted to accurately compute the geomagnetic responses. The synthetic model tests show that the earth surface conductivity has serious effect on the inversion results, but it can be well suppressed by directly modeling it in the inverse model. We further invert the data from 128 geomagnetic stations around the world and obtain a more accurate new model of global mantle conductivity.</p></div>","PeriodicalId":55221,"journal":{"name":"Computers & Geosciences","volume":"192 ","pages":"Article 105697"},"PeriodicalIF":4.2,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141978533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bayesian learning of gas transport in three-dimensional fracture networks 三维断裂网络中的气体输送贝叶斯学习法
IF 4.2 2区 地球科学
Computers & Geosciences Pub Date : 2024-08-10 DOI: 10.1016/j.cageo.2024.105700
Yingqi Shi , Donald J. Berry , John Kath , Shams Lodhy , An Ly , Allon G. Percus , Jeffrey D. Hyman , Kelly Moran , Justin Strait , Matthew R. Sweeney , Hari S. Viswanathan , Philip H. Stauffer
{"title":"Bayesian learning of gas transport in three-dimensional fracture networks","authors":"Yingqi Shi ,&nbsp;Donald J. Berry ,&nbsp;John Kath ,&nbsp;Shams Lodhy ,&nbsp;An Ly ,&nbsp;Allon G. Percus ,&nbsp;Jeffrey D. Hyman ,&nbsp;Kelly Moran ,&nbsp;Justin Strait ,&nbsp;Matthew R. Sweeney ,&nbsp;Hari S. Viswanathan ,&nbsp;Philip H. Stauffer","doi":"10.1016/j.cageo.2024.105700","DOIUrl":"10.1016/j.cageo.2024.105700","url":null,"abstract":"<div><p>Modeling gas flow through fractures of subsurface rock is a particularly challenging problem because of the heterogeneous nature of the material. High-fidelity simulations using discrete fracture network (DFN) models are one methodology for predicting gas particle breakthrough times at the surface but are computationally demanding. We propose a Bayesian machine learning method that serves as an efficient surrogate model, or emulator, for these three-dimensional DFN simulations. Our model trains on a small quantity of simulation data with given statistical properties and, using a graph/path-based decomposition of the fracture network, rapidly predicts quantiles of the breakthrough time distribution on DFNs with those statistical properties. The approach, based on Gaussian Process Regression (GPR), outputs predictions that are within 20%–30% of high-fidelity DFN simulation results. Unlike previously proposed methods, it also provides uncertainty quantification, outputting confidence intervals that are essential given the uncertainty inherent in subsurface modeling. Our trained model runs within a fraction of a second, considerably faster than reduced-order models yielding comparable accuracy (Hyman et al., 2017; Karra et al., 2018) and multiple orders of magnitude faster than high-fidelity simulations.</p></div>","PeriodicalId":55221,"journal":{"name":"Computers & Geosciences","volume":"192 ","pages":"Article 105700"},"PeriodicalIF":4.2,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0098300424001833/pdfft?md5=f8b3ab68ca2f9563aa76f642b21453d3&pid=1-s2.0-S0098300424001833-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142002355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Desurveying drillholes: Methods for calculating drillhole orientation and position, and the effects of drillhole length and rock anisotropy on deviation 钻孔勘测:计算钻孔方位和位置的方法,以及钻孔长度和岩石各向异性对偏差的影响
IF 4.2 2区 地球科学
Computers & Geosciences Pub Date : 2024-08-07 DOI: 10.1016/j.cageo.2024.105684
Benjamin J. Williams, Thomas G. Blenkinsop
{"title":"Desurveying drillholes: Methods for calculating drillhole orientation and position, and the effects of drillhole length and rock anisotropy on deviation","authors":"Benjamin J. Williams,&nbsp;Thomas G. Blenkinsop","doi":"10.1016/j.cageo.2024.105684","DOIUrl":"10.1016/j.cageo.2024.105684","url":null,"abstract":"<div><p>Directional drilling of longer drillholes is becoming increasingly important as resources are exploited at greater depths. As drillholes lengthen, the choice of desurveying method becomes more crucial as the assumptions that are inherent to all methods are compounded. The aim of this study is to first discuss the assumptions involved in each desurveying method and their potential implications for plotting drillhole pathways, and secondly to compare the established desurveying methods to find the most precise one for plotting the drillhole pathway, using examples from Mount Isa, Australia.</p><p>The orientations (azimuth and plunge) of drillholes are required to orient drill core (also known as rock or well core), which can be used to measure the orientations of geological structures at any point. Knowledge of the 3D positions for points of interest along the drill core are required to locate drillhole intersections with geological boundaries, faults or underground mine workings. New computer code has been developed to estimate the orientations and positions of drillholes at any point along their length using the existing desurveying methods. Such orientation and location estimates from the computer codes allow the original orientations of geological structures observed in drill core to be calculated. The codes are available in both R and Python languages in an easy access repository. Results from the codes show that the Basic Tangent method is consistently the least precise, whilst the industry standard Minimum Curvature method has a high precision compared to the other desurveying methods. The impact of rock anisotropy and drillhole length on the precision of the desurveying methods was investigated. Distances between end-of-hole points for each desurveying method increase with increasing drillhole length and angle between the drillhole and anisotropy.</p></div>","PeriodicalId":55221,"journal":{"name":"Computers & Geosciences","volume":"192 ","pages":"Article 105684"},"PeriodicalIF":4.2,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142136834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hyperparameter determination for GAN-based seismic interpolator with variable neighborhood search 利用可变邻域搜索确定基于 GAN 的地震内插器的超参数
IF 4.2 2区 地球科学
Computers & Geosciences Pub Date : 2024-08-06 DOI: 10.1016/j.cageo.2024.105689
Daniel N. Pinheiro , Jaime C. Gonzalez , Gilberto Corso , Mesay Geletu Gebre , Carlos A.N. da Costa , Samuel Xavier-de-Souza , Tiago Barros
{"title":"Hyperparameter determination for GAN-based seismic interpolator with variable neighborhood search","authors":"Daniel N. Pinheiro ,&nbsp;Jaime C. Gonzalez ,&nbsp;Gilberto Corso ,&nbsp;Mesay Geletu Gebre ,&nbsp;Carlos A.N. da Costa ,&nbsp;Samuel Xavier-de-Souza ,&nbsp;Tiago Barros","doi":"10.1016/j.cageo.2024.105689","DOIUrl":"10.1016/j.cageo.2024.105689","url":null,"abstract":"<div><p>We propose an automatic global search algorithm based on the Variable Neighborhood Search (VNS) metaheuristic for tuning the hyperparameters of a generative adversarial network (GAN) seismic interpolator. We perform an exhaustive search to study the influence of each hyperparameter in the training process, and compare the proposed method with Random search and Bayesian Search. The seismic data set used for this study was synthetically modeled from a typical velocity model, estimated from a pre-salt field of the Brazilian cost. We also employ the proposed method with a real field data to show the importance and applicability of the search for optimum hyperparameters of GAN. The training data was constructed with decimated seismic data and the results were tested by comparing the reconstructed data with the original one. We performed two hyperparameter impact analyses: the first consists of an exhaustive grid exploration and the second consists of our proposed automatic exploration method using the VNS algorithm, comparing it with the other two algorithms. We concluded that the proposed method, which has a user-friendly usage, as it is almost parameter-free, can reach solutions with very good quality quickly, in any range of hyperparameter values. When compared with other methods of hyperparameter tuning, the one we propose proves to be better in the ease of configuration, while being efficient in the search process.</p></div>","PeriodicalId":55221,"journal":{"name":"Computers & Geosciences","volume":"192 ","pages":"Article 105689"},"PeriodicalIF":4.2,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141963962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
PyLGRIM: Modelling 3D-ERI with infinite elements in complex topography context PyLGRIM:在复杂地形背景下使用无限元素进行 3D-ERI 建模
IF 4.2 2区 地球科学
Computers & Geosciences Pub Date : 2024-08-05 DOI: 10.1016/j.cageo.2024.105685
Antoine Tonnoir , Cyrille Fauchard , Yannick Fargier , Vincent Guilbert , Raphael Antoine
{"title":"PyLGRIM: Modelling 3D-ERI with infinite elements in complex topography context","authors":"Antoine Tonnoir ,&nbsp;Cyrille Fauchard ,&nbsp;Yannick Fargier ,&nbsp;Vincent Guilbert ,&nbsp;Raphael Antoine","doi":"10.1016/j.cageo.2024.105685","DOIUrl":"10.1016/j.cageo.2024.105685","url":null,"abstract":"<div><p>Electrical Resistivity Imaging (ERI) is one of the most used techniques in geophysics. As for many imaging methods, Digital Elevation Models (DEMs) are required to consider complex topography conditions. In this paper, we present some developments implemented into a new 3D-ERI software optimized in this context. The article focuses on the forward problem and discusses (i) the meshing methodology that directly consider DEMs in the processing and several profiles where electrodes are not necessarily aligned and (ii) new aspects for taking into account the unbounded domain. Indeed, defining boundary conditions of a numerical modelling problem arises as one of the most important issues into solving Partial Differential Equations (PDE). In order to solve the 3D-ERI forward problem, we propose an original implementation of the infinite elements, together with conventional finite elements. This methodology is first validated on synthetic case reproducing cliffs and, then, on a real case study presenting Badlands-like cliffs. Our results show that both the meshing procedure as well as the use of infinite elements enhance the efficiency of the forward problem as well as the accuracy of the inverse problem. In particular, this allows to reproduce more closely the local geology in complex environments than with a conventional 2D approach.</p></div>","PeriodicalId":55221,"journal":{"name":"Computers & Geosciences","volume":"192 ","pages":"Article 105685"},"PeriodicalIF":4.2,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0098300424001687/pdfft?md5=b366dd50e958d23bea4d586df230069d&pid=1-s2.0-S0098300424001687-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141978535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Super-resolution of digital elevation models by using multiple-point statistics and training image selection 利用多点统计和训练图像选择实现数字高程模型的超分辨率
IF 4.2 2区 地球科学
Computers & Geosciences Pub Date : 2024-07-31 DOI: 10.1016/j.cageo.2024.105688
Guanghui Hu , Yinghui Jiang , Sijin Li , Liyang Xiong , Guoan Tang , Gregoire Mariethoz
{"title":"Super-resolution of digital elevation models by using multiple-point statistics and training image selection","authors":"Guanghui Hu ,&nbsp;Yinghui Jiang ,&nbsp;Sijin Li ,&nbsp;Liyang Xiong ,&nbsp;Guoan Tang ,&nbsp;Gregoire Mariethoz","doi":"10.1016/j.cageo.2024.105688","DOIUrl":"10.1016/j.cageo.2024.105688","url":null,"abstract":"<div><p>Super-resolution (SR), also called downscaling, has been widely explored in hydrology, climate, and vegetation distribution models, among others. Digital elevation model (DEM) SR aims to reconstruct terrain at a finer resolution than available measurements. The raw terrain data are often non-stationary and characterized by trends, while terrain residuals are generally stationary in geomorphologically heterogeneous areas. Here, we develop a multiple-point statistics approach that decomposes the target low-resolution DEM into a deterministic low-frequency trend component and a stochastic high-frequency residual component. Our simulation is focusing on the residual component. A training image selection process is applied to determine locally appropriate high-resolution residual training images. The high-resolution residual of the target DEM is simulated with an open-source multiple-point statistics (MPS) framework named QuickSampling. The residual of the low-resolution target DEM is used as conditioning data to ensure local accuracy. The deterministic trend component is then added to obtain the final downscaled DEM. The proposed algorithm is compared with the bicubic interpolation, a convolutional neural network(CNN), a generative adversarial network (GAN), a modified super-resolution residual network (MSRResNet), and geostatistical area-to-point-kriging. The results show that the proposed approach maintains the statistical properties of the fine-scale DEM with its spatial details, and can be easily extended to other fields such as the super-resolution/downscaling of precipitation, temperature, land use/cover, or satellite imagery.</p></div>","PeriodicalId":55221,"journal":{"name":"Computers & Geosciences","volume":"191 ","pages":"Article 105688"},"PeriodicalIF":4.2,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mutual-guided scale-aggregation denoising network for seismic noise attenuation 用于地震噪声衰减的互导尺度聚合去噪网络
IF 4.2 2区 地球科学
Computers & Geosciences Pub Date : 2024-07-30 DOI: 10.1016/j.cageo.2024.105682
Tie Zhong , Zheng Cong , Xunqian Tong , Shiqi Dong , Shaoping Lu , Xintong Dong
{"title":"Mutual-guided scale-aggregation denoising network for seismic noise attenuation","authors":"Tie Zhong ,&nbsp;Zheng Cong ,&nbsp;Xunqian Tong ,&nbsp;Shiqi Dong ,&nbsp;Shaoping Lu ,&nbsp;Xintong Dong","doi":"10.1016/j.cageo.2024.105682","DOIUrl":"10.1016/j.cageo.2024.105682","url":null,"abstract":"<div><p>The background noise contained in seismic records contaminate the effective reflection waves and impact the subsequent processes, such as inversion and migration. The properties of seismic noises, such as non-Gaussianity and non-linearity, will be even more complex in challenging exploration environments. Deep-learning techniques are effective in suppressing complex seismic noises and outperform conventional denoising algorithms. Nonetheless, most deep learning networks are designed to extract the features of input data in single-scale only, which leads to inadequate performance when dealing with complicated seismic data. To enhance the denoising capability for seismic noises of deep learning, a novel mutual-guided scale-aggregation denoising network (MSD-Net) is designed to suppress seismic noises by utilizing the multi-scale features of input data. Specifically, the MSD-Net achieves functions including multi-scale feature extraction, fusion, and guidance through information interaction between different scales. Spatial aggregation attention is used in MSD-Net to enhance relevant features, which improves the separation of effective reflection waves and noises further. Additionally, a model-based training data generation strategy is devised to ensure the efficiency of learning and the denoising capability of MSD-Net. Compared to conventional denoising algorithms and typical deep learning networks, MSD-Net shows powerful result in suppressing complex seismic noises and generalization.</p></div>","PeriodicalId":55221,"journal":{"name":"Computers & Geosciences","volume":"191 ","pages":"Article 105682"},"PeriodicalIF":4.2,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CSIDRS – stable isotope data reduction software for the CAMECA LG SIMS CSIDRS - CAMECA LG SIMS 的稳定同位素数据还原软件
IF 4.2 2区 地球科学
Computers & Geosciences Pub Date : 2024-07-29 DOI: 10.1016/j.cageo.2024.105683
Ruby C. Marsden , Laure Martin , Matvei Aleshin , Paul Guagliardo
{"title":"CSIDRS – stable isotope data reduction software for the CAMECA LG SIMS","authors":"Ruby C. Marsden ,&nbsp;Laure Martin ,&nbsp;Matvei Aleshin ,&nbsp;Paul Guagliardo","doi":"10.1016/j.cageo.2024.105683","DOIUrl":"10.1016/j.cageo.2024.105683","url":null,"abstract":"<div><p>Reduction of stable isotope data from the CAMECA LG SIMS is a vital stage in stable isotope analysis. Currently, both visual basic programs and excel spreadsheets, and other in-house programs are used for this data reduction from raw data to final δ values; uncertainty propagations have previously been carried out using the Taylor expansion method. In this paper an open-source program, CSIDRS, which uses Monte Carlo uncertainty propagation, is presented for community use and development. Two example datasets are provided and compared to previous data reduction strategies. Additionally, CSIDRS can be used for quality checking of stable isotope SIMS data.</p></div>","PeriodicalId":55221,"journal":{"name":"Computers & Geosciences","volume":"192 ","pages":"Article 105683"},"PeriodicalIF":4.2,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0098300424001663/pdfft?md5=4399948c25056847e4a24f879eb7d1c9&pid=1-s2.0-S0098300424001663-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信