Tomography News

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Researchers Use AI to Map Marine Environments

(DASA), a part of the Ministry of Defenwe, to improve monitoring of the UK’s vast marine territories using high tech sonar.  SEA led the project and provided simulated sonar data to train and test the AI algorithms developed by the IMI.The technology could also be potentially used for ocean tomography across entire ocean basins, like the Arctic, to study the effects of climate change on the oceans and better enable the sustainability of human activities in fragile environments and ecosystems.Senior Lecturer Dr Philippe Blondel, from the University’s Center for Space, Atmospheric and Oceanic

Walter Munk, 2017 (Photo: Erik Jepsen/UC San Diego)

Walter Munk: 1917-2019

Navy Chair in Oceanography until his death.One task assigned to JASON scientists regarding anti-submarine warfare led to Munk turning his attention to marine acoustics. This brought on another era of profound advances in the understanding of the oceans as his work led to the creation of ocean acoustic tomography and thermometry through which acoustic data became a vehicle for understanding currents, circulation, and heat content.The most famous example of this work might have been a Munk-led experiment to see whether acoustics could be used as a way to estimate ocean temperatures on a global scale and

This slice, at a depth of 595 m through the Q model, clearly highlights the extent of the Peon gas field (image courtesy of CGG Multi-Client & New Ventures)

High-End Seismic Imaging Solves Shallow Gas Challenges

for the imaging consisted notably of a noise attenuation flow targeting swell noise, seismic interference and post-critical energy, as well as broadband de-ghosting, short- and long-period free-surface multiple attenuation, common-offset binning and regularization.The model building phase used both Q tomography and Q full-waveform inversion (FWI) to create a Q model which defined the location and extent of absorption anomalies. Advanced tomographic inversion and both refraction and reflection FWI were used alongside the Q work to derive the velocities and anisotropic parameters. This model building encompassed

New M-WAZ Multiclient Reimaging Program in Central U.S. Gulf of Mexico

TGS, Schlumberger reimaging central GOM

lease rounds and ahead of the large block turnover.” The custom-processing workflow for this project will include a number of newly developed imaging technologies including 3D WAZ de-ghosting; 3D surface related multiple elimination (SRME); common offset RTM gather (COR) and image-guided tomography; and orthorhombic anisotropy velocity modelling. During the reprocessing, geoscientists will update the salt interpretation and add input from the latest well data released for the area. The reimaging program is supported by industry funding. Fast-track data will be available in 2017 for lease

Makai Expands Marine Corrosion Lab

variance and automatic detection when samples are starting to corrode, as well as a detailed time history of the corrosion process. Makai also provides destructive testing and materials characterization, and outsources standard services for metallographic imaging, scanning electron microscopy and X-ray tomography to provide clients with a convenient full service and cost effective research program. www.makai.com (As published in the September 2015 edition of Marine Technology Reporter - http://www.marinetechnologynews.com/Magazine

Photo: Makai Ocean Engineering

Makai Expands Marine Corrosion Laboratory

variance and automatic detection when samples are starting to corrode, as well as a detailed time history of the corrosion process. Makai also provides destructive testing and materials characterization, and outsources standard services for metallographic imaging, scanning electron microscopy and X-ray tomography to provide clients with a convenient full service and cost effective research program.  The MCL staff provides two types of support: RDT&E services as the principal investigator; or supporting client-defined experiments at the lab. Below is a short list of the RDT&E services being

ClampOn Subsea CEM to Burullus

ClampOn has been awarded a contract from Saipem for the supply of ClampOn Subsea CEM, Corrosion-Erosion Monitors. This is one of the largest contracts received by ClampOn to date, the company said. The CEM systems will be configured with our latest technology and may be upgraded with the capability to perform tomography mapping of the pipe when this is available. The ClampOn Corrosion-Erosion Monitors will be part of Saipem’s delivery to the West Delta Deep Marine Phase IXa Project, operated by the Burullus Gas Company in the Mediterranean Sea. clampon.com

Marine Technology Magazine Cover May 2020 -

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