Filters: Tags: Southeast Alaska (X)63 results (28ms)
Conservation Biology Institute selected closed USFS roads from the "Roads with Core Attributes" dataset based on the following criteria:Roaded areas for closed roads were determined based on the NFS definition:"ROUTE_STATUS" = 'EX - EXISTING' AND "JURISDICTION" = 'FS - FOREST SERVICE' AND "SYSTEM" = 'NFSR - NATIONAL FOREST SYSTEM ROAD' AND ("OPER_MAINT_LEVEL" = '1 - BASIC CUSTODIAL CARE (CLOSED)')Original metadata: A route feature stores the spatial locations (geography) of the road. These feature classes have an (M) value or measure on their vertices. A route system depicts all roads within or in close proximity to an administrative unit. A road is a motor vehicle travel way over 50 inches wide, unless classified...
Digital elevation model of Sitka Harbor and the city of Sitka, Alaska: Procedures, data sources, and quality assessment
The 0.53-second Sitka Alaska Digital Elevation Model provides bathymetric and topographic data in ASCII raster format of 0.53-second resolution in geographic coordinates.
Album caption:Pliocone shale, Carrying pebbles and cobbles,along beach east of Lituya Bay. July 22, Southeast Alaska. 1917.
This dataset contains small cutthroat trout lakes within Southeast Alaska. These are smaller lakes that do not produce cutthroat trout large enough to reach the 11-inch regional minimum size limit. Each of these lakes has a 9-inch minimum size limit, and bait is prohibited. Regionwide limits of 2 per day and 2 in possession apply. Currently there are seven lakes in Southeast Alaska with the small cutthroat lake designation. Please verify fishing regulations with current Alaska Department of Fish and Game Sport Fishing Regulations at the following link: http://www.adfg.alaska.gov/index.cfm?adfg=fishregulations.se_sportfish
Levels of Persistent Organic Pollutants Found in Blue Mussels (Mytilus trossulus) in the Aleutian Archipelago and Southeast Alaska in 1994-1996
The data consist of levels of organic pollutants found in the blue mussels (Mytelus trossulus) samples from 44 sites along the Aleutian archipelago and in Cross Sound in southeast Alaska. For each site, the percent lipid, percent water and the sum of the target organic compounds are reported. The compounds are PCBs (polychlorinated biphenyls), DDTs (dichlorodiphenyltrichloroethanes), HCHs (hexachlorocyclohexanes), chlordane, and HCB (hexachlorocyclobenzene).
Levels of Persistent Organic Pollutants Found in the Blood of Sea Otters Captured in the Western Aleutian Islands and Southeast Alaska in 1997
The data consist of levels of organic pollutants found in the blood of sea otters captured from five areas in the western aleutian Islands and in Cross Sound in southeast Alaska. For each location, the sample size, and the median and range of values for each compound is provided. The compounds are PCBs (polychlorinated biphenyls), DDTs (dichlorodiphenyltrichloroethanes), HCHs (hexachlorocyclohexanes), chlordane, HCB (hexachlorocyclobenzene), and dieldrin.
As the SEAK Hydro database evolves, so to will the metadata for this dataset. Until noted otherwise, please reference this dataset's metadata for an older version of the source data.This map service contains two barrier layers, one from the USFS and one from the AWC. The USFS barriers layer contains points representing bedrock waterfalls in Southeast Alaska that are potential barriers to fish passage on the Tongass National Forest. Waterfalls less than 1 meter are not mapped nor are those caused only by wood or debris jams. Channel types considered to be de facto barriers to fish passage HC5, HC6, & MC3 (Channel Type Users Guide, USFS 1992) were not included in the layer. The AWC layer is undocumented at this time.
Geochemical analyses of rock samples collected from the Dotson and I and L rare earth element deposits of the Bokan Mountain peralkaline igneous complex, Prince of Wales Island, southeastern Alaska
This data release presents the major and trace element chemistry of rock samples collected by the U.S. Geological Survey (USGS) from trenches, channel cuts, test pits, and surface exposures of the Dotson and I and L Zone rare earth element deposits at Bokan Mountain, located in the southern part of Prince of Wales Island, southeastern Alaska. Bokan Mountain was formed by an Early Jurassic peralkaline igneous complex that intruded into lower Paleozoic rocks of the Alexander terrane of southeast Alaska. The pluton and surrounding country rocks host numerous mineral deposits and occurrences, including heavy rare earth element (HREE)-rich pegmatites and felsic dikes, as well as mineral deposits rich in uranium, thorium,...
Album caption: Panorama of west glacier of Lituya Bay, from elevation of 1,650 feet, on Mud Slide. also, see Nos. 619-620, July 23, Southeast Alaska, 1917. Note; Panorama with photograph number 00619(mjb00619)
This geospatially explicit vector-based polygon dataset identifies 85 terrestrial ecological subsection delineations present in Southeast Alaska and the Tongass National Forest. Within each subsection one can expect to find a relatively consistent occurence and distribution of vegetation types. Due to the hydrologically-influenced geomorphology of Southeast Alaska specific key indicators of physiography, lithology, and surface geology were employed to systematically distinguish terrestrial ecosystems.
This dataset contains polygons describing photo interpreted map classifications of the Tongass National Forest developed in 1978. The dataset's primary objective was to delineate major land types and their attributes. The land types were mapped at a polygon level - areas generally homogenous in character. Mapping was done to a 10 acre minimum except for non-commercial and non-forest types which were mapped to a 5 acre minimum. The classification identifies water as well as land. It segregates land into non-forest and forest. Polygons in forested areas were assigned a single, representative set of attributes; species composition, age, and volume class. Tim86 was updated in the 1980's (mostly in 1986) to reflect timber...
The State of Alaska has more coastline than the rest of the United Statescombined and extends from the high Arctic to the temperate rainforests and marine waters of Southeast Alaska. Climate change impacts are unique in the Southeast Alaska region and are longer term impacts such as heavy rains causing flooding, ocean acidification, warmer waters, snowfall variations, warm springs followed by frost affecting wild berry production, invasive species, and toxins in the marine environment. These factors impact food security and culturally important resources. This project will provide a summit for Southeast Alaska tribal environmentalcoordinators and other stakeholders tosupport natural and cultural resource conservation...
A depiction of the boundary that encompasses a Ranger District. The original dataset was clipped to display select ranger districts within the Tongass National Forest.
The State of Alaska Division of Geological & Geophysical Surveys (DGGS) produced an orthorectified aerial optical image mosaic (orthoimage) and digital surface model over an area extending from milepost (MP) 17 to approximately MP 24.5 on the Alaska State Highway 7 (Haines Highway) north of Haines along the Chilkat River in southeast Alaska. The aerial photogrammetric survey targeted large debris fans and their alpine source areas on the west side of the Takshanuk Mountains in support of cryosphere hazards mapping and monitoring efforts. Aerial photographs and Global Navigation Satellite System (GNSS) data were collected on May 26, 2014, and were processed using Structure-from-Motion (SfM) photogrammetric techniques...
This project, with funding support by the North Pacific Landscape Conservation Cooperative andpartners, will address the need to better understand the impact that climate change will have on oursalmon subsistence resources in southeast Alaska. Working with federal and state agencies, as well ascommunity-based organizations and tribal governments, this project will 1) build a network that supportslocal organizations in their efforts to collect stream temperature data, and 2) coordinate those efforts sothat the data will inform and empower management agencies, researchers, and communities to adapt tochanging conditions for fish in the freshwater stages of their lifecycles.
Pulsed subsidy events create ephemeral fluxes of hyper-abundant resources that can shape annual patterns of consumption and growth for recipient consumers. However, environmental conditions strongly affect local resource availability for much of the year, and can heavily impact consumer foraging and growth patterns prior to pulsed subsidy events. Thus, a consumer’s capacity to exploit pulse subsidy resources may be influenced by antecedent environmental conditions, but this has rarely been shown in nature and is unknown in aquatic ecosystems. We sampled fish at a high frequency (daily - weekly measurements) to examine the importance of hydrologic variation and a salmon pulse subsidy on the foraging patterns of two...
The Transportation map service allows desktop GIS users to map transportation datasets for Southeast Alaska.
Between 1979 and 1982, the Alaska Division of Geological & Geophysical Surveys (DGGS) and the Geophysical Institute, University of Alaska Fairbanks, undertook an assessment of the states geothermal resources under a program jointly sponsored by the U.S. Department of Energy and the State of Alaska. During this period, reconnaissance investigations of more than 100 thermal spring sites and fumarole fields located in Alaska were conducted by DGGS.
Album caption: Launch El Paso at anchor in Lituya Bay. Alaska, Southeast. July 22, 1917.
This dataset contains polygons describing the propensity for deep snow.