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Interactive effects of wildfire and climate on permafrost degradation in Alaskan lowland forests We examined the effects of fire disturbance on permafrost degradation and thaw settlement across a series of wildfires (from ~1930 to 2010) in the forested areas of collapse-scar bog complexes in the Tanana Flats lowland of interior Alaska. Field measurements were combined with numerical modeling of soil thermal dynamics to assess the roles of fire severity and climate history in postfire permafrost dynamics. Field-based calculations of potential thaw settlement following the loss of remaining ice-rich permafrost averaged 0.6 m. This subsidence would cause the surface elevations of forests to drop on average 0.1 m below the surface water level of adjacent collapse-scar features. Up to 0.5 m of thaw settlement was... Categories: Data, Publication; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Adaptation planning 1-Best management practices, Modeling, Monitoring 1-Changes in Plant and Animal Distribution: Ecosystems, Monitoring 3-Improve Permafrost Mapping, and Monitoring, All tags... landscape scale conservation: Fire, Fewer tags Remote sensing and field-based mapping of permafrost distribution along the Alaska Highway corridor, interior Alaska We employed an integrated approach that combined remote sensing techniques with field measurements to predict the presence/absence of near-surface permafrost in a section of the Alaska Highway corridor. We investigated the correlative relationships among vegetation type, topography, moss thickness, tussock condition and near-surface permafrost in the study area. Analysis of moss thickness and active-layer depth in low-lying plains (slope <8?) showed an inverse relationship in different vegetation classes. The maximum likelihood classification of remotely sensed data mapped 80% of the study area as covered with vegetation. We developed an empirical-statistical (Binary Logistic Regression) model to establish the statistical... Categories: Publication; Types: Citation; Tags: M3-Improve Permafrost Mapping, Modeling, and Monitoring Interactive effects of wildfire and climate on permafrost degradation in Alaskan lowland forests We examined the effects of fire disturbance on permafrost degradation and thaw settlement across a series of wildfires (from ~1930 to 2010) in the forested areas of collapse-scar bog complexes in the Tanana Flats lowland of interior Alaska. Field measurements were combined with numerical modeling of soil thermal dynamics to assess the roles of fire severity and climate history in postfire permafrost dynamics. Field-based calculations of potential thaw settlement following the loss of remaining ice-rich permafrost averaged 0.6 m. This subsidence would cause the surface elevations of forests to drop on average 0.1 m below the surface water level of adjacent collapse-scar features. Up to 0.5 m of thaw settlement was... Categories: Publication; Types: Citation; Tags: 0439 Ecosystems: structure and dynamics, 0475 Permafrost, 0702 Permafrost, 0708 Thermokarst, and high-latitude processes, All tags... boreal forest, climate change, cryosphere, permafrost, thaw settlement, thermokarst, wildfire, Fewer tags Interactive effects of wildfire and climate on permafrost degradation in Alaskan lowland forests We examined the effects of fire disturbance on permafrost degradation and thaw settlement across a series of wildfires (from ~1930 to 2010) in the forested areas of collapse-scar bog complexes in the Tanana Flats lowland of interior Alaska. Field measurements were combined with numerical modeling of soil thermal dynamics to assess the roles of fire severity and climate history in postfire permafrost dynamics. Field-based calculations of potential thaw settlement following the loss of remaining ice-rich permafrost averaged 0.6 m. This subsidence would cause the surface elevations of forests to drop on average 0.1 m below the surface water level of adjacent collapse-scar features. Up to 0.5 m of thaw settlement was... Categories: Publication; Types: Citation; Tags: 0439 Ecosystems: structure and dynamics, 0475 Permafrost, 0702 Permafrost, 0708 Thermokarst, and high-latitude processes, All tags... boreal forest, climate change, cryosphere, permafrost, thaw settlement, thermokarst, wildfire, Fewer tags Remote sensing and field-based mapping of permafrost distribution along the Alaska Highway corridor, interior Alaska We employed an integrated approach that combined remote sensing techniques with field measurements to predict the presence/absence of near-surface permafrost in a section of the Alaska Highway corridor. We investigated the correlative relationships among vegetation type, topography, moss thickness, tussock condition and near-surface permafrost in the study area. Analysis of moss thickness and active-layer depth in low-lying plains (slope <8?) showed an inverse relationship in different vegetation classes. The maximum likelihood classification of remotely sensed data mapped 80% of the study area as covered with vegetation. We developed an empirical-statistical (Binary Logistic Regression) model to establish the statistical... Categories: Data, Publication; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Modeling, Monitoring 3-Improve Permafrost Mapping, and Monitoring Remote sensing and field-based mapping of permafrost distribution along the Alaska Highway corridor, interior Alaska We employed an integrated approach that combined remote sensing techniques with field measurements to predict the presence/absence of near-surface permafrost in a section of the Alaska Highway corridor. We investigated the correlative relationships among vegetation type, topography, moss thickness, tussock condition and near-surface permafrost in the study area. Analysis of moss thickness and active-layer depth in low-lying plains (slope <8?) showed an inverse relationship in different vegetation classes. The maximum likelihood classification of remotely sensed data mapped 80% of the study area as covered with vegetation. We developed an empirical-statistical (Binary Logistic Regression) model to establish the statistical... Categories: Publication; Types: Citation; Tags: M3-Improve Permafrost Mapping, Modeling, and Monitoring Interactive effects of wildfire and climate on permafrost degradation in Alaskan lowland forests We examined the effects of fire disturbance on permafrost degradation and thaw settlement across a series of wildfires (from ~1930 to 2010) in the forested areas of collapse-scar bog complexes in the Tanana Flats lowland of interior Alaska. Field measurements were combined with numerical modeling of soil thermal dynamics to assess the roles of fire severity and climate history in postfire permafrost dynamics. Field-based calculations of potential thaw settlement following the loss of remaining ice-rich permafrost averaged 0.6 m. This subsidence would cause the surface elevations of forests to drop on average 0.1 m below the surface water level of adjacent collapse-scar features. Up to 0.5 m of thaw settlement was... Categories: Publication; Types: Citation; Tags: Adaptation planning 1-Best management practices, Modeling, Monitoring 1-Changes in Plant and Animal Distribution: Ecosystems, Monitoring 3-Improve Permafrost Mapping, and Monitoring, All tags... landscape scale conservation: Fire, Fewer tags Remote sensing and field-based mapping of permafrost distribution along the Alaska Highway corridor, interior Alaska We employed an integrated approach that combined remote sensing techniques with field measurements to predict the presence/absence of near-surface permafrost in a section of the Alaska Highway corridor. We investigated the correlative relationships among vegetation type, topography, moss thickness, tussock condition and near-surface permafrost in the study area. Analysis of moss thickness and active-layer depth in low-lying plains (slope <8?) showed an inverse relationship in different vegetation classes. The maximum likelihood classification of remotely sensed data mapped 80% of the study area as covered with vegetation. We developed an empirical-statistical (Binary Logistic Regression) model to establish the statistical... Categories: Publication; Types: Citation; Tags: Modeling, Monitoring 3-Improve Permafrost Mapping, and Monitoring