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"USGS Publications Warehouse": { "@context": "https://schema.org", "@type": "Article", "additionalType": "Journal Article", "name": "Surface geophysical methods for characterising frozen ground in transitional permafrost landscapes", "identifier": [ { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "70186330", "url": "https://pubs.usgs.gov/publication/70186330" }, { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse Internal ID", "value": 70186330 }, { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1002/ppp.1893", "url": "https://doi.org/10.1002/ppp.1893" } ], "journal": { "@type": "Periodical", "name": "Permafrost and Periglacial Processes", "volumeNumber": "28", "issueNumber": "1" }, "inLanguage": "en", "isPartOf": [ { "@type": "CreativeWorkSeries", "name": "Permafrost and Periglacial Processes" } ], "datePublished": "2017", "dateModified": "2018-01-13", "abstract": "The distribution of shallow frozen ground is paramount to research in cold regions, and is subject to temporal and spatial changes influenced by climate, landscape disturbance and ecosystem succession. Remote sensing from airborne and satellite platforms is increasing our understanding of landscape-scale permafrost distribution, but typically lacks the resolution to characterise finer-scale processes and phenomena, which are better captured by integrated surface geophysical methods. Here, we demonstrate the use of electrical resistivity imaging (ERI), electromagnetic induction (EMI), ground penetrating radar (GPR) and infrared imaging over multiple summer field seasons around the highly dynamic Twelvemile Lake, Yukon Flats, central Alaska, USA. Twelvemile Lake has generally receded in the past 30\u2009yr, allowing permafrost aggradation in the receded margins, resulting in a mosaic of transient frozen ground adjacent to thick, older permafrost outside the original lakebed. ERI and EMI best evaluated the thickness of shallow, thin permafrost aggradation, which was not clear from frost probing or GPR surveys. GPR most precisely estimated the depth of the active layer, which forward electrical resistivity modelling indicated to be a difficult target for electrical methods, but could be more tractable in time-lapse mode. Infrared imaging of freshly dug soil pit walls captured active-layer thermal gradients at unprecedented resolution, which may be useful in calibrating emerging numerical models. GPR and EMI were able to cover landscape scales (several kilometres) efficiently, and new analysis software showcased here yields calibrated EMI data that reveal the complicated distribution of shallow permafrost in a transitional landscape.", "description": "14 p.", "publisher": { "@type": "Organization", "name": "Wiley" }, "author": [ { "@type": "Person", "name": "Briggs, Martin A. mbriggs@usgs.gov", "givenName": "Martin A.", "familyName": "Briggs", "email": "mbriggs@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0003-3206-4132", "url": "https://orcid.org/0000-0003-3206-4132" }, "affiliation": [ { "@type": "Organization", "name": "WMA - Earth System Processes Division", "url": "https://www.usgs.gov/mission-areas/water-resources" }, { "@type": "Organization", "name": "Utah Water Science Center", "url": "https://www.usgs.gov/centers/utah-water-science-center" }, { "@type": "Organization", "name": "OGW Branch of Geophysics", "url": "https://www.usgs.gov/mission-areas/water-resources" }, { "@type": "Organization", "name": "Office of Ground Water", "url": "https://www.usgs.gov/mission-areas/water-resources" } ] }, { "@type": "Person", "name": "Campbell, Seth", "givenName": "Seth", "familyName": "Campbell" }, { "@type": "Person", "name": "Nolan, Jay", "givenName": "Jay", "familyName": "Nolan" }, { "@type": "Person", "name": "Walvoord, Michelle Ann walvoord@usgs.gov", "givenName": "Michelle Ann", "familyName": "Walvoord", "email": "walvoord@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0003-4269-8366", "url": "https://orcid.org/0000-0003-4269-8366" }, "affiliation": [ { "@type": "Organization", "name": "National Research Program - Central Branch", "url": "https://www.usgs.gov/centers/arizona-water-science-center" } ] }, { "@type": "Person", "name": "Ntarlagiannis, Dimitrios", "givenName": "Dimitrios", "familyName": "Ntarlagiannis", "affiliation": [ { "@type": "Organization", "name": "Rutgers University" } ] }, { "@type": "Person", "name": "Day-Lewis, Frederick D. daylewis@usgs.gov", "givenName": "Frederick D.", "familyName": "Day-Lewis", "email": "daylewis@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0003-3526-886X", "url": "https://orcid.org/0000-0003-3526-886X" }, "affiliation": [ { "@type": "Organization", "name": "WMA - Earth System Processes Division", "url": "https://www.usgs.gov/mission-areas/water-resources" }, { "@type": "Organization", "name": "OGW Branch of Geophysics", "url": "https://www.usgs.gov/mission-areas/water-resources" }, { "@type": "Organization", "name": "Office of Ground Water", "url": "https://www.usgs.gov/mission-areas/water-resources" } ] }, { "@type": "Person", "name": "Lane, John W. 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