Line, grid, and vector data, and plot files for the airborne geophysical survey of the Alaska Highway corridor, east-central Alaska

Burns, L.E.

doi:10.14509/14864

Cited by 5 publications

(2 citation statements)

References 0 publications

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“…Similar orthogneisses and augen orthogneisses are present throughout the Lake George assemblage of Interior Alaska and Yukon Territory, Canada. Zircon U-Pb crystallization ages of orthogneisses in the broader region fall within three age groups: (1) Late Devonian, 360-375 Ma, (2) Early Mississippian, 341-357 Ma, and (3) Middle and Late Permian (Mortensen, 1986;1990;1992;Dusel-Bacon and Aleinikoff, 1996;Dusel-Bacon and others, 2004;2006;Dusel-Bacon and Williams, 2009;Ruks and others, 2006;Murphy and others, 2006).…”

Section: Amphibolite Facies Metaigneous and Metasedimentary Rocks -Lamentioning

confidence: 94%

Bedrock-geologic map, Alaska Highway corridor, Little Gerstle River to Dot Lake, Alaska

Werdon¹,

Solie²,

Newberry³

et al. 2019

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Section: Amphibolite Facies Metaigneous and Metasedimentary Rocks -Lamentioning

confidence: 94%

Bedrock-geologic map, Alaska Highway corridor, Little Gerstle River to Dot Lake, Alaska

Werdon¹,

Solie²,

Newberry³

et al. 2019

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“…This is an area of discontinuous permafrost extent with low ground ice content, blanketed by a mosaic of fire disturbances. The Delta Junction lines are anchored by the NEON D19 taiga field site at Delta Junction, AK (DEJU); airborne electro-magnetic (AEM) surveys conducted by the Alaska Division of Geological and Geophysical Surveys[Burns et al 2008]; and numerous US Forest Service Cooperative Alaska Forest Inventory (CAFI) field site locations[Malone et al 2009]. Additionally, both L-and P-band tomoSAR data were acquired over Delta Junction to test boreal forest structural characterization algorithms(Table…”

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confidence: 99%

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Extending Airborne Electromagnetic Surveys for Regional Active Layer and Permafrost Mapping with Remote Sensing and Ancillary Data, Yukon Flats Ecoregion, Central Alaska

Pastick

Jorgenson²,

Wylie

et al. 2013

Permafrost & Periglacial

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Machine-learning regression tree models were used to extrapolate airborne electromagnetic resistivity data collected along flight lines in the Yukon Flats Ecoregion, central Alaska, for regional mapping of permafrost. This method of extrapolation (r = 0.86) used subsurface resistivity, Landsat Thematic Mapper (TM) at-sensor reflectance, thermal, TM-derived spectral indices, digital elevation models and other relevant spatial data to estimate near-surface (0-2.6-m depth) resistivity at 30-m resolution. A piecewise regression model (r = 0.82) and a presence/absence decision tree classification (accuracy of 87%) were used to estimate active-layer thickness (ALT) (< 101 cm) and the probability of near-surface (up to 123-cm depth) permafrost occurrence from field data, modelled near-surface (0-2.6 m) resistivity, and other relevant remote sensing and map data. At site scale, the predicted ALTs were similar to those previously observed for different vegetation types. At the landscape scale, the predicted ALTs tended to be thinner on higher-elevation loess deposits than on low-lying alluvial and sand sheet deposits of the Yukon Flats. The ALT and permafrost maps provide a baseline for future permafrost monitoring, serve as inputs for modelling hydrological and carbon cycles at local to regional scales, and offer insight into the ALT response to fire and thaw processes. Published 2013. This article is a U.S. Government work and is in the public domain in the USA.

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Line, grid, and vector data, and plot files for the airborne geophysical survey of the Alaska Highway corridor, east-central Alaska

Cited by 5 publications

References 0 publications

Bedrock-geologic map, Alaska Highway corridor, Little Gerstle River to Dot Lake, Alaska

Bedrock-geologic map, Alaska Highway corridor, Little Gerstle River to Dot Lake, Alaska

Untitled

Extending Airborne Electromagnetic Surveys for Regional Active Layer and Permafrost Mapping with Remote Sensing and Ancillary Data, Yukon Flats Ecoregion, Central Alaska

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