Filters: Tags: Disaster (X) > partyWithName: Arctic Landscape Conservation Cooperative (X)
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ire-induced permafrost degradation is well documented in boreal forests, but the role of fires in initiating thermokarst development in Arctic tundra is less well understood. Here we show that Arctic tundra fires may induce widespread thaw subsidence of permafrost terrain in the first seven years following the disturbance. Quantitative analysis of airborne LiDAR data acquired two and seven years post-fire, detected permafrost thaw subsidence across 34% of the burned tundra area studied, compared to less than 1% in similar undisturbed, ice-rich tundra terrain units. The variability in thermokarst development appears to be influenced by the interaction of tundra fire burn severity and near-surface, ground-ice content....
The Alaska Data Integration Working Group (ADIwg) Metadata Toolkit is an open source, suite of web applications for authoring and editing metadata for both spatial and non-spatial projects and datasets. The main goal of the toolkit is to promote the creation and use of metadata by lowering the level of technical expertise required to produce archival quality metadata.mdJSON is the metadata format ties the suite of tools together. The mdEditor is an open source client-side web application design to allow users to manage metadata for projects and data products. The mdEditor may be used to create mdJSON and interface with the mdTranslator to output metadata in multiple standards, including ISO 19115-2, 19115-1, 19110,...
Categories: Data,
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Tags: AUTHORING TOOLS,
AUTHORING TOOLS,
Academics & scientific researchers,
Conservation NGOs,
Data Management and Integration,
The 2007 Anaktuvuk River Fire was an order of magnitude larger than the average fire sizein the historic record for northern Alaska and indices of severity were substantially higherthan for other recorded tundra burns. An interdisciplinary team assessed fire effectsincluding burn severity, potential plant community shifts, and effects on permafrost andactive layers. Observers monumented, photographed, and measured 24 burned and 17unburned reference transects, starting the year after the fire, and spanning the range ofvegetation types and burn severities. Three independent ocular estimates of burn severityat varying scales were made, two ground-based indices and one aerial index. Remotelysensed data and indices were...
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