751 research outputs found
A Town Meeting on Energy : Prepared for Interior Alaskans
On March 26, 1977, an all-day Town Meeting on Energy was held at
the Hutchison Career Development Center on Geist Road in Fairbanks,
Alaska. This event was sponsored by the Alaska Humanities Forum in
cooperation with the Fairbanks North Star Borough School District; the
Institute of Water Resources at the University of Alaska, Fairbanks;
and the Fairbanks Town and Village Association. This publication
reports the activities during and the information resulting from
this town meeting.Published through a grant from the Alaska Humanities Forum under the
auspicies of the National Endowment for the Humanities
A Builder's Guide to Water and Energy
The work on which this report is based was supported in part by funds provided by the Office of Water
Research and Technology (Project A-Q65-ALAS), US. Department of the interior, Washington, D.C., as
authorized by the Water Research and Development Act of 1978
Solar Energy Resource Potential in Alaska
Solar energy applications are receiving attention in Alaska as in
much of the rest of the country. Solar energy possibilities for Alaska
include domestic water heating, hot-water or hot-air collection for
space heating, and the use of passive solar heating in residential or
commercial buildings.
As a first analysis, this study concentrated on applying solar
energy to domestic hot-water heating needs (not space heating) in Alaska,
and an analysis of solar hot-water heating economics was performed using
the F-CHART solar energy simulation computer program. Results indicate
that solar energy cannot compete economically with oil-heated domestic
hot water at any of the five study locations in Alaska, but that it may
be economical in comparison with electrically heated hot water if solar
collector systems can be purchased and installed for 25 per
square foot.This work was made possible by a grant from the Solar Planning
Office, West, 3333 Quebec, Denver, Colorado. It was performed as the
Alaskan response to a western regional solar energy planning grant from
the U. S. Department of Energy.
The authors wish to acknowledge the support and cooperation of the
Alaska State Department of Commerce, Division of Energy and Power Development,
through whose efforts the grant was made available, especially
Clarissa Quinlan, Grant Peterson, and Don Markle
Hydrologic Properties of Subarctic Organic Soils
Completion Report
for
U. S. Forest Service
Institute of Northern Forestry
Cooperative Agreement No. 16 USC 581; 581a-581iThe need for understanding the natural system and how it responds
to various stresses is important; this is especially so in an environment
where the climate not only sustains permafrost, but develops
massive seasonal frost as well. Consequently, the role of the shallow
surface organic layer is also quite important. Since a slight change in
the soil thermal regime may bring about a phase change in the water or
ice, therefore, the system response to surface alterations such as
burning can be quite severe. The need for a better understanding of the
behavior and properties of the organic layer is, therefore, accentuated.
The central theme of this study was the examination of the hydrologic
and hydraulic properties of subarctic organic soils. Summarized
in this paper are the results of three aspects of subarctic organic soil
examinations conducted during the duration of the project. First, a
field site was set up in Washington Creek with the major emphasis on
measuring numerous variables of that soil system during the summer. The
greatest variations in moisture content occur in the thick organic soils
that exist at this site. Our major emphasis was to study the soil
moisture levels in these soils. This topic is covered in the first
major section, including associated laboratory studies. Those laboratory
studies include investigations of several hydraulic and hydrologic
properties of taiga organic and mineral soils. Second, some field data
on organic moisture levels was collected at the site of prescribed burns
in Washington Creek to ascertain the sustainability of fires as a function
of moisture levels. This portion of the study is described under the
second major heading. The last element of this study was a continued
application of the two-dimensional flow model that was developed in an
earlier study funded by the U. S. Forest Service, Institute of Northern
Forestry, and reported by Kane, Luthin, and Taylor (1975a).
Many of the results and concepts gathered in the field work were
integrated into the modeling effort, which is aimed at producing better
estimates of the hydrologic effects of surface disturbances in the black
spruce taiga subarctic ecosystem. This knowledge should also contribute
to better fire management decisions of the same system.The work upon which this report is based was made possible by a
cooperative aid agreement funded by the U. S. Forest Service, Institute
of Northern Forestry, Fairbanks, Alaska. Contribution to this study was
also made by Ohio State University
Effects of seasonability and variability of streamflow on nearshore coastal areas: final report
General nature and scope of the study:
This study examines the variability of streamflow in all
gaged Alaskan rivers and streams which terminate in the ocean.
Forty-one such streams have been gaged for varying periods of
time by the U. S. Geological Survey, Water Resources Division.
Attempts have been made to characterize streamflow statistically
using standard hydrological methods. The analysis scheme
which was employed is shown in the flow chart which follows.
In addition to the statistical characterization, the following
will be described for each stream when possible:
1. average period of break-up initiation (10-day period)
2. average period of freeze-up (10-day period)
3. miscellaneous break-up and freeze-up data.
4. relative hypsometric curve for each basin
5. observations on past ice-jam flooding
6. verbal description of annual flow variation
7. original indices developed in this study to relate streamflow
variability to basin characteristics and regional
climate.This study was supported under contract 03-5-022-56, Task Order
#4, Research Unit #111, between the University of Alaska and NOAA,
Department of Commerce to which funds were provided by the Bureau of
Land Management through an interagency agreement
Stock Performance around Share Repurchase Announcements in Germany
Empirical studies of open-market share repurchases in the U.S. typically find a mean abnormal return around the announcement day of about 3%. In Germany share repurchases were highly restricted before May 1998. Since then firms have repurchased shares in the open market more than 250 times. Since the institutional framework differs considerably from the U.S., an analysis of the German data can give important insights. Gerke/Fleischer/Langer (2002), using a larger data set and more carefully chosen procedures than prior studies on German repurchase announcements, presented several puzzling results. We confirm that in Germany the announcement day return is considerably higher than in the U.S. and that this return is higher in Germany?s ?Neuer Markt? than in the traditional market segments. We cannot confirm their findings about bull and bear markets. When we look at subsamples based on the reasons for the repurchase stated in the announcements, we obtain results which are completely different from the results of Gerke/Fleischer/Langer (2002)
1. Wochenbericht M78/2
Der Fahrtabschnitt M78/2 vom 1. April (Port of Spain, Trinidad) bis 11. Mai 2009 (Rio de Janeiro, Brasilien) ist die letzte Ausfahrt im Rahmen des DFG-Schwerpunktprogramms SPP 1144 zu den Hauptarbeitsgebieten zwischen 5° und 11°S entlang des südlichen mittelatlantischen Rückens. Fahrtleiter ist Dr. Richard Seifert vom Institut für Biogeochemie und Meereschemie der Universität Hamburg. Die zentralen Fragestellungen des SPP 1144 sind: Wie findet der Energie- und Stofffluss vom Erdmantel in den Ozean statt? Auf welchen Zeitskalen erfolgen die Prozesse an Spreizungszonen? Die auf vorangegangenen Fahrten (M62/5, CD169, M64/1, M68/1 und Atalante 2008) entdeckten aktiven Hydrothermalfelder bieten hervorragende Voraussetzungen für die geplanten Arbeiten. Zum Einsatz kommen u.a. das Unterwasserfahrzeug AUV ABYSS und der Unterwasserroboter ROV KIEL 6000 vom IFM-GEOMAR.
M 78/2
01. April bis 11. Mai 2009
Erster Wochenbericht, Sonntag 05. April 200
6. Wochenbericht M78/2
Der Fahrtabschnitt M78/2 vom 1. April (Port of Spain, Trinidad) bis 11. Mai 2009 (Rio de Janeiro, Brasilien) ist die letzte Ausfahrt im Rahmen des DFG-Schwerpunktprogramms SPP 1144 zu den Hauptarbeitsgebieten zwischen 5° und 11°S entlang des südlichen mittelatlantischen Rückens. Fahrtleiter ist Dr. Richard Seifert vom Institut für Biogeochemie und Meereschemie der Universität Hamburg. Die zentralen Fragestellungen des SPP 1144 sind: Wie findet der Energie- und Stofffluss vom Erdmantel in den Ozean statt? Auf welchen Zeitskalen erfolgen die Prozesse an Spreizungszonen? Die auf vorangegangenen Fahrten (M62/5, CD169, M64/1, M68/1 und Atalante 2008) entdeckten aktiven Hydrothermalfelder bieten hervorragende Voraussetzungen für die geplanten Arbeiten. Zum Einsatz kommen u.a. das Unterwasserfahrzeug AUV ABYSS und der Unterwasserroboter ROV KIEL 6000 vom IFM-GEOMAR.
M 78/2
01. April bis 11. Mai 2009
Sechster Wochenbericht, Sonntag 10. Mai 200
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