All factors affecting lenght of astronomical year seasons duration are described. Among the most important ones belong inclination of the Earth axis, changes of the Earth speed during its revolution around the Sun on the elliptic orbit, changes
of the lenght of perihelian, and properties of calendar attempting to solve non-integral lenght of year in days. - (MS)
Eden, EarthDay, and Ecology: Landscape Restoration as Metaphor and Mission
EarthDay ; Ecological restoration ; Ecology ; Eden ; Landscape ; Man-environment relations ; Nature conservation ; Philosophy ; Value system ; Wilderness ; ecology ; landscape restoration
Ecologic Crisis’ (1967) and the EarthDay reform mission (1970), convergent redemptive philosophies realigned ecotheology and landscape restoration along Franciscan lines, shedding commandments to subdue and conquer for injunctions to live in harmony
Glacial and periglacial processes, their landforms, influences of cryogenic destruction, and repeated freezing and thawing effects in rocks and their weathered mantle are described. Main features and dynamics of present-day and former glacial
and periglacial environments are presented as an evidence of significant global change of various landscapes in the Quaternary epoch. Knowledge of glacial and periglacial processes and landforms provides a background for understanding the present-day global change
Implications of Late Pleistocene glaciation of the Tibetan Plateau for present-day uplift rates and gravity anomalies
on a spherically symmetric, linear Maxwell-viscoelastic Earth. This method is commonly used to study effects related to the global mass redistributions during the Late Pleistocene glacial cycle.
Earth's surface movements in the hazardous area of Jezeří Castle, Krušné hory Mountains
The results are summarized of the correlation between the detailed geomorphological analysis and the geodynamic interpretation of the twelve high-precision levelling measurements of the earth's recent surface movements (1983-1989) in the hazardous
. The landform patterns, as well as the present-day activity of geological processes are described.
Earth flows described in this study are a type of mass movement involving fine soils, characterized by velocities of a few meters or less per day, persisting for several days, months or years. The studies were carried out in order to determine what
The aim of this paper is to show the way to answer the following principal questions in geomorphology : 1/ Features of the existing landscape and their elements inherited from the past ; 2/ Present-day processes and transformation of the existing
Actual state and progress of research on the greenhouse effect and on changes of the Earth's natural environment. The paper describes causes of long-term and short-term climatic changes, the human interference starting from the neolithic
and industrial revolutions, scenarios of present-day changes and their impact on the natural resources, research programs and ways of international collaboration to protect the environment. - (DG)
diffusivity is introduced and applied to a five-day data set obtained in Sweden. The computational procedure for determining the apparent diffusivity is explained and results are then presented for different layers and periods.
[b1] Dept. of Physical Geography, Earth Sciences Center, Göteborg University, Göteborg, Suede
The main purpose of this study is to present the methodology of topoclimatological classification of relatively small areas based on specific patterns of energy exchange at the interface earth-atmosphere, and in turn, its suitability
for topoclimatological mapping. Using the typologies of energy exchange for both day-time and night-time, the final classification of topoclimates has been elaborated. - (BJ)
Coastal environment ; Coastal geomorphology ; Earth surface processes ; Nearshore zone ; Netherlands (The) ; Remote sensing ; Sand bar ; Years 1990-99
The central objective of this thesis was to improve the understanding of nearshore bar behaviour over time scales ranging from days to years, using a 3,4-year data set of ARGUS video images (from March 1995 to September 1998) of the double barred
Extreme temperature days for the period from 1947 to 1998 in Hong Kong were investigated, to examine the variability of the extreme days, and to relate extreme days to synoptic influences. Significant decreasing trends of both warm and cold days
were discovered. Results of this study create a climatology of extreme temperature days in Hong Kong.
Didactics ; Earth sciences ; Germany ; Higher education ; Practical work ; Schleswig-Holstein ; Teaching of geography
In 2002, the earth research institutes of Kiel (Germany) organised the Kieler Geotag that covered 62 different activities offering all science sub disciplines. The majority of the students came within an out-of-door activity of their geography class
. Because of the variety of the activities and the number of students that participated, we regarded the event as typical course of similar activities at other places in Germany. Most of the students assured that they profited from the day. Nevertheless
or two days and there are several instances where expansions and contractions can be related to individual precipitation events. A non linear and lagged relationship can be identified between daily precipitation and daily soil movement on bare earth
Soil movement has been measured daily for almost a year on a 12o slope. Results show a pattern of alternating movements, with amplitudes substantially larger on bare earth than on grass. Time series exhibit short-term dependence with lags of one
Stewarding the earth : commentary on resource and environmental geographies in the West
state of resource studies before and after Erath Day 1970. The programs offering resource/environmental studies, in the APCG region at least, educate twice as many students as do geography departments. A. calls on geography to increase its involvement
in different stages, adapted from existing classifications. Ground-truth points describing the present-day vegetation were obtained during a field campaign and used for supervised and validated land-cover classification of these categories, using the Landsat
landscapes. Landsat images of 1975, 1990, and 2001 were analyzed. Present-day mature tree fallow is less abundant on areas deforested during 1975-1990. The relative areal proportions were used to refine a deforestation scenario and apply it to existing data
[b1] Dept. of Earth and Environmental Sciences, Div. of Geography, Katholieke Univ., Leuven, Belgique
[b2] Dep. of Earth and Environmental Sciences, Div. Forest, Nature and Landscape, K. Univ., Leuven, Belgique
An analysis of tornado days in Missouri for the period 1950-2002
Tornado analysis using a tornado-day approach was made for the State of Missouri, and its climatic divisions, for the period 1950-2002. Although tornado days have not increased in Missouri, the NW Prairie climatic division recorded a statistically
significant decline in tornado days during that time period. Seasonal patterns in tornado days were examined for each of the 115 countries in Missouri using cluster analysis.