The National Petroleum reserve in Alaska :earth-science considerations

Gryc, George

doi:10.3133/pp1240c

Cited by 17 publications

(9 citation statements)

References 1 publication

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“…Models for "no talik" and "infinite talik" were also included. Permafrost resistivity was set to 20 Ω m as a conservative estimate determined from borehole data (Gryc, 1988) and inversion results of three TEM soundings on terrestrial sites surrounding Peatball Lake, which included permafrost upland areas and areas of previously thawed permafrost within a drained lake basin. A permafrost resistivity of 40 Ω m was also tested, but the results showed little to no difference from the results of the 20-Ω m permafrost modeling.…”

Section: Geophysical Forward Modelingmentioning

confidence: 99%

Transient Electromagnetic Surveys for the Determination of Talik Depth and Geometry Beneath Thermokarst Lakes

et al. 2018

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Thermokarst lakes are prevalent in Arctic coastal lowland regions and sublake permafrost degradation and talik development contributes to greenhouse gas emissions by tapping the large permafrost carbon pool. Whereas lateral thermokarst lake expansion is readily apparent through remote sensing and shoreline measurements, sublake thawed sediment conditions and talik growth are difficult to measure. Here we combine transient electromagnetic surveys with thermal modeling, backed up by measured permafrost properties and radiocarbon ages, to reveal closed‐talik geometry associated with a thermokarst lake in continuous permafrost. To improve access to talik geometry data, we conducted surveys along three transient electromagnetic transects perpendicular to lakeshores with different decadal‐scale expansion rates of 0.16, 0.38, and 0.58 m/year. We modeled thermal development of the talik using boundary conditions based on field data from the lake, surrounding permafrost and a borehole, independent of the transient electromagnetics. A talik depth of 91 m was determined from analysis of the transient electromagnetic surveys. Using a lake initiation age of 1400 years before present and available subsurface properties the results from thermal modeling of the lake center arrived at a best estimate talk depth of 80 m, which is on the same order of magnitude as the results from the transient electromagnetic survey. Our approach has provided a noninvasive estimate of talik geometry suitable for comparable settings throughout circum‐Arctic coastal lowland regions.

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Section: Geophysical Forward Modelingmentioning

confidence: 99%

Transient Electromagnetic Surveys for the Determination of Talik Depth and Geometry Beneath Thermokarst Lakes

et al. 2018

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“…The United States has several large shale deposits, with more than 24 basins and 38 formations (US EAI 2020; Stolz and Griffin 2021, see (Gryc 1985), the focus has been exclusively on conventional reserves. Greater discussion of unconventional oil and gas extraction in the United States can be found in Chapter 2.…”

Section: United Statesmentioning

confidence: 99%

Environmental Impacts from the Development of Unconventional Oil and Gas Reserves

2022

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The development of unconventional oil and gas shales using hydraulic fracturing and directional drilling is currently a focal point of energy and climate change discussions. While this technology has provided access to substantial reserves of oil and gas, the need for large quantities of water, emissions, and infrastructure raises concerns over the environmental impacts. Written by an international consortium of experts, this book provides a comprehensive overview of the extraction from unconventional reservoirs, providing clear explanations of the technology and processes involved. Each chapter is devoted to different aspects including global reserves, the status of their development and regulatory framework, water management and contamination, air quality, earthquakes, radioactivity, isotope geochemistry, microbiology, and climate change. Case studies present baseline studies, water monitoring efforts and habitat destruction. This book is accessible to a wide audience, from academics to industry professionals and policy makers interested in environmental pollution and petroleum exploration.

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“…This is particularly useful in the foothills and coastal plain, where distinctive plant community complexes are associated with acidic sandy substrates, or nonacidic loamy substrates. Based on photointerpretation of AVHRR false CIR composite and several sources (Gryc, 1985;Hamilton, 1986;Hamilton and Porter, 1975;Rieger, et al, 1979;USDI, 1982), and personal unpublished data from numerous surveys. 9a.…”

Section: Map Code Vegetationmentioning

confidence: 99%

Proceedings of the Third International Circumpolar Arctic Vegetation Mapping Workshop : a compilation of abstracts and short papers presented at the U.S. Geological Survey, EROS Alaska Field Office, Anchorage, Alaska, U.S.A., June 3-7, 1998

The National Petroleum reserve in Alaska :earth-science considerations

Cited by 17 publications

References 1 publication

Transient Electromagnetic Surveys for the Determination of Talik Depth and Geometry Beneath Thermokarst Lakes

Transient Electromagnetic Surveys for the Determination of Talik Depth and Geometry Beneath Thermokarst Lakes

Environmental Impacts from the Development of Unconventional Oil and Gas Reserves

Proceedings of the Third International Circumpolar Arctic Vegetation Mapping Workshop : a compilation of abstracts and short papers presented at the U.S. Geological Survey, EROS Alaska Field Office, Anchorage, Alaska, U.S.A., June 3-7, 1998

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