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The western coastline of Alaska spans over 10,000 km of diverse topography ranging from low lying tundra in the north to sharp volcanic relief in the south. Included in this range are areas highly susceptible to powerful storms which can cause coastal flooding, erosion and have many other negative effects on the environment and commercial efforts in the region. In order to better understand the multi-scale and interactive physics of the deep ocean,continental shelf, near shore, and coast, a large unstructured domain hydrodynamic model is being developed using the finite element, free surface circulation code ADCIRC.This model is a high resolution, accurate, and robust computational model of Alaska’s coastal environment...
Categories: Data;
Tags: Academics & scientific researchers,
COASTAL AREAS,
COASTAL AREAS,
COASTAL PROCESSES,
COASTAL PROCESSES,
The western coastline of Alaska is highly susceptible to coastal storms, which can cause coastal erosion, flooding, and have other pernicious effects to the environment and commercial efforts. The reduction in ice coverage due to climate change could potentially increase the frequency and degree of coastal flooding and erosion. Further, estuaries and delta systems act as conduits for storm surges, so when there is less nearshore ice coverage, these systems could introduce storm surge into terrestrial environments unaccustomed to saline intrusion, flooding, or other alien biogeochemical factors.This project quantified the effect of reduced nearshore ice coverage on coastal flooding. The project developed a large...
Categories: Collection,
Data;
Tags: Academics & scientific researchers,
COASTAL AREAS,
COASTAL AREAS,
COASTAL PROCESSES,
COASTAL PROCESSES,
The National Cohesive Wildland Fire Management Strategy, initiated in 2009 and finalized in 2014, provides a national vision for wildland fire management. This highly collaborative effort establishes three overarching goals, and describes stakeholder-driven processes for achieving them: (1) resilient landscapes; (2) fire-adapted communities; and (3) safe and effective wildfire response. The scientific rigor of this program was ensured with the establishment of the National Science and Analysis Team (NSAT). The main tasks of NSAT were to compile credible scientific information, data, and models to help explore national challenges and opportunities, identify a range of management options, and help set national priorities...
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Citation,
Downloadable,
Map Service;
Tags: Academics & scientific researchers,
AppLCC,
AppLCC,
Appalachian,
Conservation NGOs,
Bering Sea storms introduce various environmental conditions that adversely affect human activity and infrastructure in the coastal zone and the ecosystems they depend upon. Storm impacts include interactions with sea ice in all potential states: large floes, shore-fast ice, and incipient sea-ice in frazil or slush state. In particular, sea ice can act to enhance or mitigate the impacts of adverse marine state, even as the event is occurring. Such occurrences should be part of a forecasting regimen, however scientific work has not been conducted on this phenomena, with the result that a physical model describing the formation of slush ice berms does not exist. To arrive at such a model requires visits to and input...
An integrated high resolution tide and storm surge model has been developedfor all of coastal Alaska. The model uses the ADCIRC basin-to-channelscale unstructured grid circulation code. Tidal forcing from global tidal modelsand meteorological forcing from the Climate Forecast System Reanalysisare used. The model’s tidal solution has been validated at 121 shelf andnearshore stations. The model’s skill has been investigated for summer, falland winter storms. Sea ice has been incorporated through a parameterizedwind drag coefficient which modifies the air-sea drag under ice coverage.Three large storms with distinctly different ice coverages were chosen to exhibitthe effect of sea ice on the resulting storm surge. The...
Categories: Data,
Publication;
Types: Citation;
Tags: Academics & scientific researchers,
COASTAL AREAS,
COASTAL AREAS,
COASTAL PROCESSES,
COASTAL PROCESSES,
The western coastline of Alaska is highly susceptible to coastal storms, which can cause coastal erosion, flooding, and have other pernicious effects to the environment and commercial efforts. The reduction in ice coverage due to climate change could potentially increase the frequency and degree of coastal flooding and erosion. Further, estuaries and delta systems act as conduits for storm surges, so when there is less nearshore ice coverage, these systems could introduce storm surge into terrestrial environments unaccustomed to saline intrusion, flooding, or other alien biogeochemical factors.This project quantified the effect of reduced nearshore ice coverage on coastal flooding. The project developed a large...
Categories: Data,
Image;
Tags: Academics & scientific researchers,
COASTAL AREAS,
COASTAL AREAS,
COASTAL PROCESSES,
COASTAL PROCESSES,
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,
Project;
Tags: AUTHORING TOOLS,
AUTHORING TOOLS,
Academics & scientific researchers,
Conservation NGOs,
Data Management and Integration,
Fragile barrier islands are important nesting habitat for focal species of the Gulf Coast Prairie Landscape Conservation Cooperative, such as brown pelicans, sea turtles, and black skimmers. Assessing the vulnerability of coastal ecosystems at a Gulf of Mexico-wide scale has become even more important in the wake of several destructive storms (e.g. Katrina, Rita, and Ike) and the 2010 Deepwater Horizon oil spill.
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Academics & scientific researchers,
Alabama,
BARRIER ISLANDS,
BARRIER ISLANDS,
Barrier Islands,
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...
This project engaged several Western Alaska coastal communities to describe types and formation processes associated with near-shore sea-ice phenomena during the fall freeze-up season, in particular as relevant to coastal erosion, flooding, and shoreline protection. Commentary and indigenous and local observations were drawn from and analyzed through existing community observing programs (SIZONet and ANTHC-LEO) as well as from new interviews and meetings conducted for this project. Extensive work was performed to summarize, assess, and synthesize written and recorded observations and commentary. A primary result was identification of a range of slush-ice berm events that could be broadly categorized as “advective”...
The western coastline of Alaska is highly susceptible to coastal storms, which can cause coastal erosion, flooding, and have other pernicious effects to the environment and commercial efforts. The reduction in ice coverage due to climate change could potentially increase the frequency and degree of coastal flooding and erosion. Further, estuaries and delta systems act as conduits for storm surges, so when there is less nearshore ice coverage, these systems could introduce storm surge into terrestrial environments unaccustomed to saline intrusion, flooding, or other alien biogeochemical factors.This project quantified the effect of reduced nearshore ice coverage on coastal flooding. The project developed a large...
Categories: Data;
Tags: Academics & scientific researchers,
COASTAL AREAS,
COASTAL AREAS,
COASTAL PROCESSES,
COASTAL PROCESSES,
The western coastline of Alaska is highly susceptible to coastal storms, which can cause coastal erosion, flooding, and have other pernicious effects to the environment and commercial efforts. The reduction in ice coverage due to climate change could potentially increase the frequency and degree of coastal flooding and erosion. Further, estuaries and delta systems act as conduits for storm surges, so when there is less nearshore ice coverage, these systems could introduce storm surge into terrestrial environments unaccustomed to saline intrusion, flooding, or other alien biogeochemical factors.This project quantified the effect of reduced nearshore ice coverage on coastal flooding. The project developed a large...
Categories: Data;
Tags: Academics & scientific researchers,
COASTAL AREAS,
COASTAL AREAS,
COASTAL PROCESSES,
COASTAL PROCESSES,
The western coastline of Alaska is highly susceptible to coastal storms, which can cause coastal erosion, flooding, and have other pernicious effects to the environment and commercial efforts. The reduction in ice coverage due to climate change could potentially increase the frequency and degree of coastal flooding and erosion. Further, estuaries and delta systems act as conduits for storm surges, so when there is less nearshore ice coverage, these systems could introduce storm surge into terrestrial environments unaccustomed to saline intrusion, flooding, or other alien biogeochemical factors.This project quantified the effect of reduced nearshore ice coverage on coastal flooding. The project developed a large...
Categories: Data;
Tags: Academics & scientific researchers,
COASTAL AREAS,
COASTAL AREAS,
COASTAL PROCESSES,
COASTAL PROCESSES,
This project, part of a broader effort called the Gulf Coast Vulnerability Assessment, involved identifying gaps in data and integrating datasets and corresponding metadata required for a Gulf of Mexico-wide assessment of conditions and variables affecting barrier island vulnerability. Morphologic and geospatial datasets were later incorporated into the Conservation Planning Atlas, an emerging technology that makes a vast amount of geospatial data more easily accessible and available at no cost to conservation partners.
Categories: Data,
Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2014,
AL-01,
AL-01,
AL-02,
AL-02,
This pending report will describe and quantify the extent of and trends climate change impacts on fire return intervals in Alaska and Canada’s boreal forests.
Categories: Data;
Tags: Academics & scientific researchers,
CLIMATE INDICATORS,
CLIMATE INDICATORS,
FIRE ECOLOGY,
FIRE ECOLOGY,
One of the major challenges in understanding changes in coastal processes in western Alaska is the lack of measured ocean data in the region. This project leverages existing human resources, and physical and computational infrastructure to collect and disseminate oceanographic observations in the Bering Sea. From instrument restoration, transport and deployment, through data streaming, recovery and dissemination, this project considers the end to end supports necessary to gather, promote, and serve oceanographic data along Alaska’s Western coast. Real‐time sea‐state conditions directly benefit emergency managers and local communities, particularly in dealing with small craft hazards and predicting storm surges...
The western coastline of Alaska is highly susceptible to coastal storms, which can cause coastal erosion, flooding, and have other pernicious effects to the environment and commercial efforts. The reduction in ice coverage due to climate change could potentially increase the frequency and degree of coastal flooding and erosion. Further, estuaries and delta systems act as conduits for storm surges, so when there is less nearshore ice coverage, these systems could introduce storm surge into terrestrial environments unaccustomed to saline intrusion, flooding, or other alien biogeochemical factors.This presentation provides an update on a project that is quantifying the effect of reduced nearshore ice coverage on coastal...
Categories: Data;
Tags: Academics & scientific researchers,
COASTAL AREAS,
COASTAL AREAS,
COASTAL PROCESSES,
COASTAL PROCESSES,
This project’s key goal was to identify and understand community adaptation responses to major flood and drought events in He‘eia, O‘ahu. Floods and droughts were identified using stream gage data from the U.S. Geological Survey (USGS), and rainfall data from Dr. Tom Giambelluca and the Rainfall Atlas of Hawai‘i. Both He‘eia rainfall and stream gage data were used because the major events would likely overlap, thus strengthening the identification of flood or drought events. Community adaptability was examined by utilizing various media including primarily community elder interviews and newspaper articles. Historical research revealed that there was no mention of community adaptability as a result of major droughts...
Categories: Data;
Tags: climatologyMeteorologyAtmosphere,
climatologyMeteorologyAtmosphere,
disaster,
disaster,
environment,
The National Cohesive Wildland Fire Management Strategy, initiated in 2009 and finalized in 2014, provides a national vision for wildland fire management. This highly collaborative effort establishes three overarching goals, and describes stakeholder-driven processes for achieving them: (1) resilient landscapes; (2) fire-adapted communities; and (3) safe and effective wildfire response. The scientific rigor of this program was ensured with the establishment of the National Science and Analysis Team (NSAT). The main tasks of NSAT were to compile credible scientific information, data, and models to help explore national challenges and opportunities, identify a range of management options, and help set national priorities...
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Citation,
Downloadable,
Map Service;
Tags: Academics & scientific researchers,
AppLCC,
Appalachian,
Conservation NGOs,
Datasets/Database,
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