Results 41 to 50 of about 477 (145)

A Deghosting Method Based on Deep Learning

Journal of Physics: Conference Series, 2023
Abstract Interference of ghost has a bad effect to marine seismic exploration, which reduces the resolution seismic data and accuracy of seismic interpretation. To solve these problems, we propose a deghosting method based on deep learning. The trial calculation of synthetic models shows that this method is more streamlined and efficient
Yuetong Zhao, Yaxing Li, Xiaofeng Jia, Xinming Wu   +3 more
openaire   +1 more source

Small Seismic Sources to Improve Survey Efficiency at Reduced Environmental Impact: Case Study From the Brazilian Pre‐Salt

Geophysical Prospecting, Volume 73, Issue 9, November 2025.
ABSTRACT In Brazil, concerns about marine life have resulted in strong restrictions on seismic operations, with a minimum distance of 60 km between source vessels and an exclusion zone of 1000 m for marine mammals. These restrictions impact survey efficiency, duration, logistics and cost. Optimized and physically smaller seismic sources may reduce cost
Felipe Capuzzo, Marco Cetale, Jorge Lopez, Felipe Costa, Samantha Grandi   +4 more
wiley   +1 more source

Counting animals in orthomosaics from aerial imagery: Challenges and future directions

Methods in Ecology and Evolution, Volume 16, Issue 6, Page 1051-1060, June 2025.
Abstract The use of drones to survey and monitor wildlife populations has increased exponentially. A common protocol used for data collection is planning flights with substantial overlap between successive photographs and lateral lines and then creating orthomosaics by merging the collected images.
Ismael V. Brack, Camila Ferrara, German Forero‐Medina, Enrique Domic‐Rivadeneira, Omar Torrico, Kevin Thomas Wanovich, Benjamin Wilkinson, Denis Valle   +7 more
wiley   +1 more source

Interferometric modeling of wave propagation in inhomogeneous elastic media using time reversal and reciprocity [PDF]

, 2006
Time reversal of arbitrary, elastodynamic wavefields in partially open media can be achieved by measuring the wavefield on a surface surrounding the medium and applying the time reverse of those measurements as a boundary condition.
Robertsson, Johan O. A., Andrew Curtis, van Manen, Dirk-Jan, Johan O. Robertsson, Curtis, Andrew; id_orcid, Dirk-Jan van Manen   +5 more
core   +1 more source

Multiple Seamount Subduction and Lithological Variability Possibly Control Pore Fluid Pressure and Shallow Slow Earthquake Activity in Nankai Trough off Muroto

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 4, April 2025.
Abstract The clustered distribution of shallow slow earthquakes in the Nankai Trough has been attributed to different factors such as seamount subduction, pore fluid pressure, fluid migration, and sediment input. However, there is still a lack of comprehensive understanding of how these factors interact to generate slow earthquakes.
Paul Caesar M. Flores, Shuichi Kodaira, Gaku Kimura, Kazuya Shiraishi, Yasuyuki Nakamura, Gou Fujie, Tetsuo No, Yuka Kaiho   +7 more
wiley   +1 more source

Imaging Processing of 3D DAS‐VSP Data Jointly Acquired With a High‐Density OBN Survey in the Middle East

International Journal of Geophysics, Volume 2025, Issue 1, 2025.
Joint surface and borehole seismic are a 3D surface‐and‐borehole seismic exploration method of the simultaneous acquisition of onshore or offshore 3D seismic and VSP (vertical seismic profiling) data using the same sources. When acquiring surface 2D or 3D seismic data in the field, simultaneously acquired 2D or 3D distributed acoustic sensing VSP or ...
Shaohua Zhang, Gang Yu, Haibo Liu, Yu Zhang, Hui Chen, Guillaume Cambois, James Cowell, Jane Mason, Muhammad Waqas, Xiang Li, Lian Duan, Fei Li, Yuanzhong Chen, Junjun Wu, Arkoprovo Biswas   +14 more
wiley   +1 more source

Deghosting based on the transmission matrix method [PDF]

Journal of Geophysics and Engineering, 2017
As the developments of seismic exploration and subsequent seismic exploitation advance, marine acquisition systems with towed streamers become an important seismic data acquisition method. But the existing air–water reflective interface can generate surface related multiples, including ghosts, which can affect the accuracy and performance of the ...
Benfeng Wang, Ru-Shan Wu, Xiaohong Chen
openaire   +1 more source

Near offset reconstruction for marine seismic data using a convolutional neural network

Geophysical Prospecting, Volume 72, Issue 6, Page 2164-2185, July 2024.
Abstract Marine seismic data is often missing near offset information due to separation between the source and receiver cables. To solve this problem, a convolutional neural network is trained on synthetic seismic data to reconstruct the near offset gap.
Owen Rohwer Huff, Vemund Stenbekk Thorkildsen, Thomas Larsen Greiner, Jan Erik Lie, Andreas Kjelsrud Evensen, Aina Juell Bugge, Jan Inge Faleide   +6 more
wiley   +1 more source

FLASH: Fast and Lightweight Architecture Using State Space Models for HDR Multi-Exposure Reconstruction

IEEE Access
Multi-exposure high dynamic range (HDR) image reconstruction makes it possible to improve the quality of low dynamic range (LDR) images using algorithms based on deep learning.
Josue Lopez-Cabrejos, Lucas Carvalho, Quefren Leher, Gustavo Ferreti, Thuanne Paixao, Ana Beatriz Alvarez, Diodomiro Baldomero Luque   +6 more
doaj   +1 more source

Low‐frequency seismic deghosting in a compressed domain using parabolic dictionary learning

Geophysical Prospecting, Volume 72, Issue 5, Page 1640-1656, June 2024.
Abstract Deghosting is an important technique in the marine seismic industry, as it plays a crucial role in mitigating the effects of ghost reflections from the sea surface, which can significantly impact the accuracy and resolution of subsurface imaging.
Mohammed Outhmane Faouzi Zizi, Pierre Turquais, Anthony Day, Morten W. Pedersen, Leiv J. Gelius   +4 more
wiley   +1 more source