1,276 research outputs found
Flood Frequency Estimation in Northern Sparse Data Regions: Completion Report
The primary objective of this project was to complete development of
an arctic hydrologic model and to evaluate its usefulness in generating
information useful for a design tool in estimation of peak flow discharges.
The peak flow discharges studied were those generally analyzed and evaluated
in the design of facilities for stream crossings.The work upon which this report is based was supported by funds
(Project B-021 ALAS) provided by the United States Department of the
Interior, Office of Water Resources Research, as authorized by Water
Resources Research Act of 1964, Public Law 88-379, as amended
A Northern Snowmelt Model
In early 1968, a large petroleum discovery was made in the Prudhoe
Bay area of Alaska's Arctic Coastal Plain. This discovery has led Alaska
into a period of development of unprecedented speed and magnitude. This
development will require the construction of many engineering facilities
which are affected by the water resources. The design of each of these
requires an understanding of the hydrologic system, a system which is
dominated in Alaska by low temperatures, high latitudes, large elevation
differences and sparse data. The latter factor is unique to Alaska and
makes application of common design techniques virtually impossible
A Catalog of Hydroclimatological Data for Alaska's Coastal Zone
In order to perceive a better understanding of the interrelationships of
the coastal zone water we proposed a research project which was to sort out
many of the complex variables. The project was not begun due to the lack
of sufficient funds. We did, however, begin a limited literature search
and listing of hydroclimatological data sources of Alaska's coastal zone.
We felt this would be a modest but useful start towards the larger study.
It should also have some practical usefulness to others. This data catalog
is a result of this initial study. Because of the wide variety of types
of agency which collect data and the literally hundreds of sources through
which they are reported, it is often quite bewildering for even experienced
investigators to sort out what can be found and where. Although we are
sure that the catalog is far from complete, we feel that it is a useful
beginning towards an attempt to better understand the hydroclimatological
processes in Alaska's coastal zone. We wish to invite contributions and
criticisms which could lead to an improved and more comprehensive version
at some future date.We gratefully acknowledge the support of the Sea Grant Program of the
University of Alaska and the support and encouragement of its Director,
David Hickok. The project also received support from the Office of Water
Resources Research and the State of Alaska through the Institute of Water
Resources at the University of Alaska
Improvement of the Fairbanks Atmospheric Carbon Monoxide Transport Model -- A Program for Calibration, Verification and Implementation
Completion Report Prepared for the Research Section, Alaska Department of Transportation and Public FacilitiesIn the early 70s, state, local and federal officials in Fairbanks,
Alaska, became concerned with the rising incidence of high carbon monoxide
episodes. Because of that concern, the Alaska Department of
Highways (forerunner of the Department of Transportation and Public
Facilities) and the Fairbanks North Star Borough requested that the
Institute of Water Resources undertake a study to develop a computer
model capability for understanding the transport of carbon monoxide and
other pollutants within the Fairbanks airshed. The work was completed
in June of 1976. Two publications (Carlson and Fox, 1976; Norton and
Carlson, 1976) describe the initial development, documentation and
implementation of the computer model. The model, ACOSP (Atmospheric
Carbon monOxide Simulation Program), describes the two-dimensional
behavior of pollutants in the atmosphere via solution of the convection-diffusion
equation using the finite element method of numerical analysis
A Study of the Breakup Characteristics of the Chena River Basin Using ERTS Imagery: Completion Report
ERTS Project 110-5Snowmelt and rainfall floodinq is a major water resource problem in
Alaska. At the present time, forecastinq of these floods is based on a
sparse hydrological and climatological network. Numerous basins with
drainage areas of 5,000 km2 and less remain completely ungaged. The lack
of data causes uncertainty in the design of transportation schemes such as
tile Trans-Alaska oil pipeline. This project studied the utility of using
ERTS-l imagery as a source of additional data for the prediction of snowmelt
runoff, the most dynamic hydroloqic event in arctic and subarctic
basins. Snow distribution as determined from the satellite imagery was
compared with values determined from the conventional snow course stations
and with the results of a snowmelt energy model. The Chena River Basin
was selected because of the availability of ground truth data for comparison.
Very good agreement for snow distribution and rates of ablation was
found between the ERTS-l imagery, the snowmelt model, and field measurements.
Monitoring snowmelt rates for relatively small basins appears to be practical.
The main limitation of the ERTS-l imagery is the interval of coverage.
More frequent overflights providing coverage are needed for the study of
transient hydrologic events. ERTS-l data is most useful when used in conjunction
with snowmelt prediction models and existing snow course data.
These results should prove very useful in preliminary assessment of hydrologic
conditions in ungaged watersheds and will provide a tool for month-to-month
volume forecasting.This work was supported by National Aeronautics and Space Administration,
Grant NAS 5-21833
User's guide for atmospheric carbon monoxide transport model
In the winter months of Fairbanks, Alaska, a highly stable air temperature
inversion creates high levels of carbon monoxide (CO) concentrations. As an aid
to understanding this problem, a CO transport computer model has been created
which provides a useful tool when used in conjunction with other measurement and
analytic studies of traffic, meteorology, emissions control, zoning, and parking
management. The model is completely documented and illustrated with several
examples. Named ACOSP (Atmospheric CO Simulation Program), it predicts expected
CO concentrations within a specific geographic area for a defined set of CO
sources. At the present time, the model is programmed to consider automobile
emissions as the major CO source and may include estimates of stationary sources.
The model is coded for computer solution in the FORTRAN programming language and
uses the finite-element method of numerical solution of the basic convective-diffusion
equations. Although it has a potential for real-time analysis and control,
at the present time the model will be most valuable for investigating and understanding
the physical processes which are responsible for high CO levels and for
testing remedial control measures at high speed and low cost
A Computer Model of the Tidal Phenomena in Cook Inlet, Alaska
The work upon which this report is based was supported by funds (Project
A-028-ALAS) provided by the United States Department of the Interior,
Office of Water Resources Research, as authorized under the Water Resources
Act of 1964, as amended
Water Balance of a Small Lake in a Permafrost Region
The work upon which this report is based was supported in part by
funds (Project A-031-ALAS) provided by the United States Department of
the Interior, Office of Water Resources Research, as authorized under
the Water Resources Act of 1964, as amended
Hydrology of the Central Arctic River Basins of Alaska
The work upon which this report is based was supported in part by funds (Project A-031-ALAS) provided by the United States Department
of Interior, Office of Water Resources Research, as authorized under
the Water Resources Act of 1964, as amended
Thermal Tolerances of Interior Alaskan Arctic Grayling (Thymallus arcticus)
The work upon which this report is based was supported in part by
funds (Project A-041-ALAS) provided by the United States Department of
the Interior, Office of Water Resources Research, as authorized under
the Water Resources Act of 1964, as amended
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