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Showing 1-20 of 2,638 results
  1. Improvement of drought forecasting by means of various machine learning algorithms and wavelet transformation

    Drought, which is defined as a decrease in average rainfall amounts, is one of the most insidious natural disasters. When it starts, people may not...

    Türker Tuğrul, Mehmet Ali Hinis in Acta Geophysica
    Article Open access 01 July 2024
  2. Enhanced daily streamflow forecasting in Northeastern Algeria: integrating hybrid machine learning with advanced wavelet transformation techniques

    The primary goal of this study is to devise robust models for analyzing daily streamflow time series across three distinct watersheds in northeastern...

    Noureddine Daif, Aziz Hebal in Modeling Earth Systems and Environment
    Article 22 June 2024
  3. Analysis of Cosmic Ray Fluxes at Different Stations during Geomagnetic Storms using Wavelet Based Approaches: Continuous Wavelet Transform and Multi-Resolution Analysis

    Abstract

    This study investigated the impact of different types of geomagnetic storms on cosmic ray fluxes at different stations using various...

    Chali Idosa Uga, Binod Adhikari, Dessalegn Teferi in Geomagnetism and Aeronomy
    Article 25 December 2023
  4. Intelligent Wavelet Coefficients Thresholding: Speckle Reduction Approach in SAR Imagery

    Synthetic aperture radar imagery contain valuable information that are used in most cases, in this regard reducing the pseudo-noise effect of speckle...

    Hamid Jannati, Mohammad Javad Valadan Zoej in Journal of the Indian Society of Remote Sensing
    Article 30 March 2024
  5. Variability of Provincial Capital Rainfall in Pakistan Using Wavelet Transformation

    This study is focused on the regional variation of rainfall (RF) in Pakistan using wavelet transformation. The RF variation in five regions of...

    Muhammad Fahim Akhter, Shaheen Abbas in Pure and Applied Geophysics
    Article 13 July 2021
  6. Monthly rainfall forecasting by a hybrid neural network of discrete wavelet transformation and deep learning

    Rainfall forecast is critical to the management and allocation of water resources. Deep learning is used to predict rainfall time series with high...

    Ming Wei, Xue-yi You in Water Resources Management
    Article 22 July 2022
  7. Performance Comparison of Image Fusion Alternatives Combining PCA with Multi-resolution Wavelet Transforms

    In the situations of image fusion between the panchromatic (PAN) and the multispectral (MS) image, it is an ideal thing to properly absorb the source...

    **aoliang Zhu, Wenxing Bao in Journal of the Indian Society of Remote Sensing
    Article 04 April 2024
  8. Performance Optimization of NavIC Receiver Using LabVIEW-Based Wavelet Denoising

    Global Navigation Satellite System (GNSS) receivers perform many important signal-processing operations, among which signal acquisition is of great...

    Prateek Singh, Nitin Sharma in Journal of the Indian Society of Remote Sensing
    Article 19 March 2024
  9. Suppression of seismic random noise by deep learning combined with stationary wavelet packet transform

    Many traditional denoising methods, such as Gaussian filtering, tend to blur and lose details or edge information while reducing noise. The...

    Hua Fan, Dong-Bo Wang, ... Tao Li in Applied Geophysics
    Article 05 June 2024
  10. Surface wave suppression through deformable convolutional wavelet transform network with residual dense blocks

    Surface wave suppression plays a vital role in enhancing the quality of reflection seismic exploration. Convolutional neural networks (CNNs) can...

    Lei Gao, Haolong Hong, ... Fan Min in Acta Geophysica
    Article 06 April 2024
  11. WTCRNet: a wavelet transform and contrastive regularization network for sonar denoising by self-supervision

    In the field of underwater acoustics, forward-looking sonar represents a pivotal tool for acquiring subaqueous imagery. However, this technique is...

    Chengling Si, Shu Zhang, ... Junyu Dong in Intelligent Marine Technology and Systems
    Article Open access 24 June 2024
  12. Recognition of Signals from Pulsed Sources Based on the Form of Wavelet Spectra Constructed by the Principal Component Method

    Abstract

    A method for recognizing infrasound acoustic signals for two types of sources based on the analysis of the shape of their wavelet spectra is...

    M. N. Zakirov, S. N. Kulichkov, ... N. D. Tsybulskaya in Doklady Earth Sciences
    Article 10 June 2024
  13. Comparative Study of Different Discrete Wavelet Based Neural Network Models for long term Drought Forecasting

    Recently, coupled Wavelet transform and Neural Networks models (WANN) were extensively used in hydrological drought forecasting, which is an...

    Djerbouai Salim, Souag-Gamane Doudja, ... Hasbaia Mahmoud in Water Resources Management
    Article 27 January 2023
  14. Recognition Method of Coal–Rock Reflection Spectrum Using Wavelet Scattering Transform and Bidirectional Long–Short-Term Memory

    Classifying and recognizing the reflection spectrum of coal–rock is an innovative method for coal–rock identification in coal mining process. Herein,...

    Z. W. Ding, C. F. Zhang, ... Y. X. Liu in Rock Mechanics and Rock Engineering
    Article 24 October 2023
  15. A hybrid wavelet–machine learning model for qanat water flow prediction

    In many parts of semiarid and arid regions, qanats are the leading supplier of water demand for agricultural and drinking usage. Qanat is an ancient...

    Saeideh Samani, Meysam Vadiati, ... Hossein Bonakdari in Acta Geophysica
    Article 29 November 2022
  16. Semi-automated Rock Layer Recognition from Borehole Log Data Using Combined Wavelet and Fourier Transform: A Case Study in the KG basin, India

    The accurate identification of rock layer interfaces from wireline logs is one of the crucial issue of geological interpretation as we face...

    Bappa Mukherjee, Kalachand Sain in Journal of the Geological Society of India
    Article 20 December 2023
  17. Seasonal rainfall pattern using coupled neural network-wavelet technique of southern Uttarakhand, India

    Hydrological data is crucial for accurate forecasting of precipitation which can be used for water resources planning and management. The purpose of...

    Shekhar Singh, Deepak Kumar, ... Nand Lal Kushwaha in Theoretical and Applied Climatology
    Article 28 March 2024
  18. Analysis and synthesis of East Himalayan earthquakes using a hybrid wavelet synchrosqueezed transform

    The work presented in paper is focussed on the development of an accurate time-frequency representation of accelerograms, representing the seismic...

    Adarsh Krishnan, Ramkrishnan Ramabhadran, ... Kavya Muraleedharan in Arabian Journal of Geosciences
    Article 06 November 2023
  19. Modeling of meteorological, agricultural, and hydrological droughts in semi-arid environments with various machine learning and discrete wavelet transform

    Recent meteorological, hydrological, and agricultural droughts in the Mediterranean regions have raised concerns about the impact of climate change....

    Mohammed Achite, Okan Mert Katipoglu, ... Hüseyin Yıldırım Dalkılıç in Theoretical and Applied Climatology
    Article 18 August 2023
  20. Estimation of Vertical Settlement of Earthen Dams Caused by Earthquake Using ANN Model and Wavelet-ANN Composition

    In the present study, the estimation of vertical settlement of earthen dams caused by earthquakes has been investigated using an artificial neural...

    Salim Abbasi, Mehran Seifollahi, ... Hamed Abbaszadeh in Geotechnical and Geological Engineering
    Article 19 April 2023
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