Articles

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January 2019

Introduction to January Focus: Research Across Canada

Katie McLean and Germán Rodríguez-Pradillar

There´s no better way to kick off the year than with fresh ideas to expand our knowledge and improve our skills as exploration geoscientists. To help you out with that, we compiled in this special edition some exciting contributions from various researchers from all across Canada that cover some state-of-the-art…

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January 2019

Skeletonization and Empirical-Mode Decomposition of 2-D Potential-field Images

Le Gao and Igor B. Morozov

The volumes of modern gridded data collected by the geophysical exploration industry are often large and can benefit from methods for image decomposition, pattern analysis, and interpretation. Automated pattern-recognition methods can be useful for both seismic and potential-field images. In both of these cases, it is important to extract quantitative…

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January 2019

Mechanics of Seismic Q

Igor B. Morozov

Seismic- wave attenuation and dispersion are studied in most geophysical curricular and broadly used in both academic and applied research. Applications of these concepts include identification of gas reservoirs and chimneys from frequencydependent seismic amplitudes, analysis of frequency dependent P- and S-wave velocities, interpretation of the effects of porosity and…

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January 2019

CCArray and EON-ROSE: Emerging Pan-Canadian Multidisciplinary Research Initiatives

David W. Eaton, Katherine Boggs, Thomas S. James, Jason C. Droboth, Pascal Audet

The Canadian Cordillera – the mountainous regions of western Canada – represents a world-class natural laboratory for exploring the interconnected Earth systems that are critical to our understanding of major scientific grand challenges. The Canadian Cordillera Array (CCArray) is a proposed international scientific initiative, spearheaded by the creation of a…

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January 2019

Impact Craters in Seismic Data

Amanda Obodovsky

Since the acquisition of seismic data in the 1960’s, impact structures have been seen in seismic data. These are structures that were created earlier in the Earth’s history from a meteorite impact and have since been buried underground. While many of these unique structures are known to be located in…

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January 2019

Airborne EM: Peace Project, British Columbia, Canada

Melvyn Best, Anne-Sophie Høyer, Flemming Jørgensen, Antonio Menghini, Carlos Salas, Andrea Viezzoli

Over the last decade, Airborne Electromagnetics (AEM) has become a widespread tool for groundwater applications. Besides the demand of acquiring good quality AEM data, there are two other fundamental steps to obtain a robust geological and hydrogeological model: accurate processing/inversions and advanced interpretation.

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December 2018

Introduction to December Focus: The Banff 2018 International Induced Seismicity Workshop

Paige Mamer

The Banff 2018 International Induced Seismicity Workshop took place October 24-27, 2018 and was hosted jointly by the Canadian Induced Seismicity Collaboration and the Canadian Society for Unconventional Resources. It featured an international and diverse audience consisting of members of government and academia as well as attendees from the oil…

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December 2018

Real-time Induced Seismicity Forecasting and Risk Management Utilizing Research-grade Seismic Catalogs

Sepideh Karimi and Dario Baturan

Practical management of induced seismicity risk and effective mitigation approaches are crucial to oil and gas operations. Effective risk management procedures benefit from an accurate forecast of the largest potential magnitude event in near real-time, allowing the adjustment of operational parameters to reduce the probability of a felt or damaging…

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December 2018

Managing Induced Seismicity in Canbriam’s Altares Field in the Montney Formation, N.E. British Columbia – An Update

John Nieto, Brad Bialowas, Bogdan Batlai, and Graham Janega

The Montney formation in British Columbia and Alberta has gained prominence in recent years due to the exploration and production boom which has yielded more than 3.5 bcf/d in production output and in excess of 440 TCF of reserves. It is one of the largest unconventional plays in North America,…

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December 2018

Roy Oliver Lindseth

To many of us, Roy Lindseth was our geophysical father. He was a scientific visionary, entrepreneur, respected advisor, and kind mentor to many geophysicists, both young and experienced. He encouraged us to do great things while taking care of small details. Roy worked tirelessly for the science, application, and people…

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December 2018

Analyzing a Seismic Pitfall – Pliocene Superdeep High Amplitude Anomaly, Offshore, Bay of Bengal, India

Niranjan C. Nanda

A wildcat was drilled on a Pliocene superdeep seismic high amplitude anomaly in 1050 m of water to explore the hydrocarbon potential in the bathyal zone of Bay of Bengal. The well penetrated a thick monotonous section of 1400 m of siliciclastic mudrocks without encountering the prognosticated hydrocarbon sands, resulting…

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December 2018

Applied Geoscience in Academia – Quo Vadis?

Larry Lines

The following article is based on a talk that I gave to a group of geoscientists at the 2017 Geoconvention in Calgary, Alberta. It included a series of observations that I have made regarding the state of applied geoscience at Canadian universities. While the talk was apparently not controversial nor…

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October 2018

Introduction to October Focus: Hydrogeophysics: The Past, Present & Future

Jon Fennell

The ability to detect and image things that are hidden from our sight has always been a fascination of humans. This applies to geoscience as much as any other field. With the ability to sense objects and materials beneath the earth’s surface, the discipline of exploration geophysics has been instrumental…

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October 2018

Emergency Response Groundwater Exploration at Rohingya Refugee Camps in Bangladesh

Alastair McClymont, Paul Bauman, Colin Miazga, Eric Johnson, and Chris Slater

As geoscientists and engineers, and like most other professionals, we take pride in using our education and experience for the betterment of society. In developed countries, the value of such work on water supply projects may not be so obvious, where we take for granted that our communities will always…

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October 2018

A Cost Effective Approach to Regional and Site-specific Aquifer Exploration Using Combined Airborne and Ground Electromagnetics

Jane Dawson, Robert Perrin and Jim Henderson

Shallow groundwater is often hosted in Quaternary sediments that are very complex in nature and challenging to map. Traditional mapping and exploration methods to delineate these features are often time consuming, costly, and provide uncertain results. Airborne electromagnetic (EM) techniques have proven effective in delineating these aquifers over extensive geographic…

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October 2018

Extending the Reach of Radio Waves for Subsurface Water Detection

Gordon D.C. Stove

Shallow and deep groundwater can be a major environmental obstacle for any geophysical surveying technique, especially radio waves. Ground penetrating radar (GPR) is a mature technology with applications in many areas; see Daniels (2004) for an overview. Almost all applications are restricted to imaging the subsurface to a rather shallow…

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October 2018

Advances in the Realm of Hydrogeophysics: The Emerging Role of Quantum Geoelectrophysics in Aquifer Exploration

Richard Hatala, Jon Fennell, and Gerald Gurba

Water is integral to our economy, the health of our environment, and a necessity for all life forms and human development. Most water is accessed from surface sources, primarily rivers, which are now under increased threat due to over use and growing hydro-political forces. Still, groundwater exists as a viable…

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September 2018

Introduction to September Focus: Emerging Methods and Technologies

Oliver Kuhn and Neda Boroumand

The original vision for this RECORDER edition’s theme was that we would feature a collection of articles that focused on new, leading edge geophysical technologies in applied use. We fell short of that goal, and that is probably because entirely new geophysical technologies are rare, and most of what is…

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September 2018

Muon Geotomography: A Novel, Field-Proven 3D Density Imaging Technique for Mineral Exploration and Resource Monitoring

Doug Schouten

Muon geotomography is a novel density measurement technique based on the absorption of cosmic ray muons in the ground. Naturally occurring cosmic ray muons emanating from the upper atmosphere lose energy as they penetrate the earth. These muons are absorbed at a rate that is proportional to the density of…

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September 2018

Seismic Acquisition Innovations Applied in Canada

Andrea Crook

Over the past 10 years, land seismic acquisition has changed significantly. Nodal/cable-less systems have broadly replaced cabled systems, vibroseis sources have replaced explosive sources even in areas with difficult terrain, and high-density seismic programs are becoming commonplace. This article, based on the Chief Geophysicists Forum presentation “Top 5 Innovations in…