Filters: Tags: Human health (X) > Categories: Publication (X)
57 results (13ms)|
Filters
Date Range
Extensions Types Contacts Categories |
Originating from different activities that were part of the University of Alaska’s contribution to the Fourth International Polar Year, this interdisciplinary volume addresses a host of current concerns regarding the rapid transformation of the Arctic and its impacts on people and ecosystems. Close to a hundred contributors with a broad range of backgrounds examine Arctic change from an Alaska perspective, providing insight into different approaches of evaluating and preparing for environmental and socio-economic change. Thanks to its coverage of important social-ecological systems and processes, including fresh water, marine resources, the coasts, and oil and gas development, this volume explores opportunities...
Categories: Data,
Publication;
Types: Citation,
Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: A1-Alaska,
Human Health
In a temperate glacier there are typically one to several meltwater reservoirs affecting the shape and timing of the glacier's meltwater hydrograph. This study applies recessional analysis to define the number of meltwater reservoirs at the Matanuska Glacier, a large valley glacier (379km super(2)) in south-central Alaska with a relatively long discharge record (1995-2002). Three meltwater reservoirs were identified with mean residence times ( K) of 21.0, 37.1 and 88.8 hours. Annual mean K values show a significant drop to their lowest values in 1996, followed by a general increase from 1996 to 1998. During the interval 1999 to 2002, annual mean K values appear relatively stable and show little variation, with values...
In the north, the presence of mercury (Hg) in food leading to chronic exposure is a scientific, economic and political issue. Guidelines have been established for the safe consumption of fish containing Hg, however, adherence to these guidelines must be weighed against the health benefits of consuming fish, such as from the omega-3 polyunsaturated fatty acids, vitamins and minerals. Alaskan Natives generally consume much more fish than the national average. This review summarizes and synthesizes the significant amount of data that has been generated on Hg in Alaska fish, particularly those consumed by Alaskans. Also included are a review of the benefits of eating fish, human health concerns relating to Hg toxicity...
Regulatory, political, and institutional barriers have prevented broader use of rapid, simple, and inexpensive microbiological tests for Escherichia coli. By permitting greater use of chromogenic microbiological methods for compliance requirements by trained and certified operators of smaller public water systems, the cost of compliance should remain the same or decrease than when using distant laboratories. In fact, the lower cost of such methods would allow more frequent testing. New microbial methods allow greater public health protection because they are more sensitive to smaller amounts of contaminants in addition to allowing faster turnaround times--which would allow faster notification to the public. This...
In June 2004, we made snow pit studies and radio-echo soundings to seek ice core drilling sites on Mt. McKinley (63 degree N, 151 degree W, 6194 m a. s. L), Alaska. Pit studies at Denali Pass (5560 m a. s. l.) and Medical Camp (4350 m a. s. l.) show high-density layers near surface. These layers seem to relate with strong wind. From the comparison of the observed temperatures at the pits and temperatures at other ice coring sites in Alaska and Yukon, we suppose that no significant melting occurs at observed sites. Radio-echo soundings show that the ice thicknesses at High Camp (5220 m a. s. l.) and Denali Pass are 46-48 m and 60-67 m, respectively. Although we have a little information about accumulation rates,...
In a temperate glacier there are typically one to several meltwater reservoirs affecting the shape and timing of the glacier's meltwater hydrograph. This study applies recessional analysis to define the number of meltwater reservoirs at the Matanuska Glacier, a large valley glacier (379km super(2)) in south-central Alaska with a relatively long discharge record (1995-2002). Three meltwater reservoirs were identified with mean residence times ( K) of 21.0, 37.1 and 88.8 hours. Annual mean K values show a significant drop to their lowest values in 1996, followed by a general increase from 1996 to 1998. During the interval 1999 to 2002, annual mean K values appear relatively stable and show little variation, with values...
We measured the surface velocity field during the summers of 1999 and 2000 on the 7 km long, 185 m thick Bench Glacier, Alaska, USA. In the spring of both years, a short-lived pulse of surface velocity, 2-4 times the annual mean velocity, propagated up-glacier from the terminus at a rate of similar to 200-250 m d super(-1). Displacement attributable to rapid sliding is similar to 5-10% of the annual surface motion, while the high-velocity event comprised 60-95% of annual basal motion. Sliding during the propagating speed-up event peaked at 6-14 cm super(-1), with the highest rates in mid-glacier. Continuous horizontal and vertical GPS measurements at one stake showed divergence and then convergence of the ice surface...
In a temperate glacier there are typically one to several meltwater reservoirs affecting the shape and timing of the glacier's meltwater hydrograph. This study applies recessional analysis to define the number of meltwater reservoirs at the Matanuska Glacier, a large valley glacier (379km super(2)) in south-central Alaska with a relatively long discharge record (1995-2002). Three meltwater reservoirs were identified with mean residence times ( K) of 21.0, 37.1 and 88.8 hours. Annual mean K values show a significant drop to their lowest values in 1996, followed by a general increase from 1996 to 1998. During the interval 1999 to 2002, annual mean K values appear relatively stable and show little variation, with values...
In June 2004, we made snow pit studies and radio-echo soundings to seek ice core drilling sites on Mt. McKinley (63 degree N, 151 degree W, 6194 m a. s. L), Alaska. Pit studies at Denali Pass (5560 m a. s. l.) and Medical Camp (4350 m a. s. l.) show high-density layers near surface. These layers seem to relate with strong wind. From the comparison of the observed temperatures at the pits and temperatures at other ice coring sites in Alaska and Yukon, we suppose that no significant melting occurs at observed sites. Radio-echo soundings show that the ice thicknesses at High Camp (5220 m a. s. l.) and Denali Pass are 46-48 m and 60-67 m, respectively. Although we have a little information about accumulation rates,...
Categories: Publication;
Types: Citation;
Tags: Human Health,
R2a-Impact Climate Change Vegatation and Subsistence
In the north, the presence of mercury (Hg) in food leading to chronic exposure is a scientific, economic and political issue. Guidelines have been established for the safe consumption of fish containing Hg, however, adherence to these guidelines must be weighed against the health benefits of consuming fish, such as from the omega-3 polyunsaturated fatty acids, vitamins and minerals. Alaskan Natives generally consume much more fish than the national average. This review summarizes and synthesizes the significant amount of data that has been generated on Hg in Alaska fish, particularly those consumed by Alaskans. Also included are a review of the benefits of eating fish, human health concerns relating to Hg toxicity...
Categories: Data,
Publication;
Types: Citation,
Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Human Health,
R2a-Impact Climate Change Vegatation and Subsistence
Categories: Publication;
Types: Citation;
Tags: Human Health,
R2a-Impact Climate Change Vegatation and Subsistence
Categories: Publication;
Types: Citation;
Tags: Human Health,
R2a-Impact Climate Change Vegatation and Subsistence
|
|
