Results 1 to 10 of about 388,345 (299)

Nonlinear Seismic Signal Denoising Using Template Matching with Time Difference Detection Method

Remote Sensing
As seismic exploration shifts towards areas with more complex surface and subsurface structures, the complexity of the geological conditions often results in seismic data with low signal-to-noise ratio. It is therefore essential to implement denoising in
Rongwei Xu, Bo Feng, Huazhong Wang, Chengliang Wu, Zhenbo Nie   +4 more
doaj   +1 more source

Pyroclastic Flow Deposits and InSAR: Analysis of Long-Term Subsidence at Augustine Volcano, Alaska

Remote Sensing, 2016
Deformation of pyroclastic flow deposits begins almost immediately after emplacement, and continues thereafter for months or years. This study analyzes the extent, volume, thickness, and variability in pyroclastic flow deposits (PFDs) on Augustine ...
David B. McAlpin, Franz J. Meyer, Wenyu Gong, James E. Beget, Peter W. Webley   +4 more
doaj   +1 more source

Facies-Constrained Kriging Interpolation Method for Parameter Modeling

Remote Sensing
In seismic exploration, establishing a reliable parameter model (such as velocity, density, impedance) is crucial for seismic migration imaging and reservoir characterization.
Zhenbo Nie, Bo Feng, Huazhong Wang, Chengliang Wu, Rongwei Xu, Chao Ning   +5 more
doaj   +1 more source

Inverse Kinematics without matrix inversion

2008 IEEE International Conference on Robotics and Automation, 2008
This paper presents a new singularity robust and computationally efficient method for solving the inverse kinematics (IK) problem. In this method, the transformation from Cartesian space to joint space is performed in a feedback loop and as a result the new feedback inverse kinematics (FIK) law operates as a filter and does not require matrix ...
openaire   +3 more sources

Temporal Monitoring of the Soil Freeze-Thaw Cycles over a Snow-Covered Surface by Using Air-Launched Ground-Penetrating Radar

Remote Sensing, 2015
We tested an off-ground ground-penetrating radar (GPR) system at a fixed location over a bare agricultural field to monitor the soil freeze-thaw cycles over a snow-covered surface.
Khan Zaib Jadoon, Lutz Weihermüller, Matthew F. McCabe, Davood Moghadas, Harry Vereecken, Sebastíen Lambot   +5 more
doaj   +1 more source

Mapping of Agricultural Subsurface Drainage Systems Using a Frequency-Domain Ground Penetrating Radar and Evaluating Its Performance Using a Single-Frequency Multi-Receiver Electromagnetic Induction Instrument

Sensors, 2020
Subsurface drainage systems are commonly used to remove surplus water from the soil profile of a poorly drained farmland. Traditional methods for drainage mapping involve the use of tile probes and trenching equipment that are time-consuming, labor ...
Triven Koganti, Ellen Van De Vijver, Barry J. Allred, Mogens H. Greve, Jørgen Ringgaard, Bo V. Iversen   +5 more
doaj   +1 more source

Deciphering the Invdupdel(8p) Genotype–Phenotype Correlation: Our Opinion

Brain Sciences, 2020
The 8p inverted duplication/deletion is a rare chromosomal rearrangement clinically featuring neurodevelopmental delay, mild to severe cognitive impairment, heart congenital defects and brain abnormalities.
Manuela Lo Bianco, Davide Vecchio, Tiziana A. Timpanaro, Alessia Arena, Marina Macchiaiolo, Andrea Bartuli, Laura Sciuto, Santiago Presti, Sarah Sciuto, Annamaria Sapuppo, Agata Fiumara, Lidia Marino, Giulia Messina, Piero Pavone   +13 more
doaj   +1 more source

Inversion of thermal properties of lunar soil from penetration heat of projectile using a 2D axisymmetric model and optimized PSO algorithm

Frontiers in Materials, 2022
The thermophysical parameters of lunar soil can be inferred from the temperature field during the invasion process of reconnaissance projectile. This paper adopts a two-dimensional axisymmetric model to reconstruct the projectile invasion process.
Fan Li, Fan Li, Honglang Li, Zixiao Lu, Junhao Cao, Weiwei Zhang, Junyue Tang, Yahui Tian, Cheng Chi, Shengyuan Jiang   +9 more
doaj   +1 more source

DELINEATION OF SUBSURFACE STRUCTURES IN TOJA FIELD IN THE NIGER DELTA USING WELL-LOGS AND SEISMIC DATA [PDF]

Malaysian Journal of Geosciences, 2019
The subsurface structures delineation of TOJA Field southwest Niger Delta using well-log and seismic data is here presented. The reflectivity seismic amplitude and acoustic impedance, spectra decomposition volume derivatives were used for reservoir ...
Obioma Umunna, Etim D. Uko , Idara O. Akpabio   +2 more
doaj   +1 more source

Inversion of Phytoplankton Pigment Vertical Profiles from Satellite Data Using Machine Learning

Remote Sensing, 2021
Observing the vertical dynamic of phytoplankton in the water column is essential to understand the evolution of the ocean primary productivity under climate change and the efficiency of the CO2 biological pump.
Agathe Puissant, Roy El Hourany, Anastase Alexandre Charantonis, Chris Bowler, Sylvie Thiria   +4 more
doaj   +1 more source