Interpretation and compatibility of house-price series
Housing ; Housing cost ; Housing market ; Housing occupance ; Index ; Time series ; United Kingdom
politiques appropriées de la part du gouvernement. Examen des différences provenant des données et de la méthodologie. Elles peuvent expliquer en partie pourquoi les tendances diffèrent selon les séries.
Spectral analysis of geomorphic time series: auto-spectrum
Technical and software bulletin 1996
Australia ; Coastal dynamics ; Coastal environment ; Geomorphology ; Sea breeze ; Sea level ; Seasonal variation ; Spectral analysis ; Statistics ; Time series ; Western Australia
The aim of this paper is to clarify the techniques of spectral analysis employed to determine the auto-spectrum and to examine the application and interpretation of these techniques when applied to natural time series. Throughout this paper a time
series of nearshore water level observations will be employed to demonstrate the operation and interpretation of the techniques. The techniques covered in this paper include the determination of the periodogram, auto-spectrum, and confidence intervals
Fuzzy sets and series analysis for visual decision support in spatial data exploration
The research underlying this Ph.D. thesis concerns the development of procedures for evaluating predefined classification techniques for spatial data. The definition of fuzzy sets and the analysis of fuzzy series are proposed as tools
Effects of regional and local climatic controls on multiannual air temperature series
Carpathian Mountains ; Climatic variability ; Climatic variation ; Human impact ; Hydraulic works ; Poland ; Scale ; Temperature ; Time series ; Topoclimate ; Valley
an analysis of trends in air temperature changes can help detect inhomogeneities in observation series made for different types of topoclimate.
Uranium-series dating of carbonate (tufa) deposits associated with Quaternary fluctuations of Pyramid Lake, Nevada
This study provides a record for the timing and magnitude of lake-level fluctuation in the Pyramid Lake subbasin during part of the last 400,000 yr. The AA. use uranium-series methods to determine the ages of some of the tufa varieties discussed
in Benson (1994). Furthermore, they compare the new U-series ages to create a more complete chronology independent of C 14 ages.
Alluvium ; Bank erosion ; Dating ; Dendrochronology ; Flood ; Floodplain ; Fluvial processes ; Hokkaido ; Japan ; Methodology ; Sediment transport ; Time series ; Vegetation degradation
continuity of age distribution in order to analyze river sedimentation in a time series according to the results of the 1992 flood. The time series approach presented here is useful for evaluating the speed of sediment waves and the cumulative impact
Active layer ; Alaska ; Periglacial features ; Permafrost ; Soil temperature ; Soil water ; Time series
This paper documents the relative magnitude of thermally induced sorption/desorption effects in a soil where all three phases of water coexist. Soil temperature and electric potential time series are used to monitor temperature-driven variations
Séries de sols d'un paysage de moraines récentes dans le nord-ouest de l'Allemagne (région des lacs de Bonrhöved, Schleswig-Holstein)
Les sols d'un paysage donné sont en interrelation grâce à de nombreux processus d'intensité et d'orientation différentes. Dans la région des lacs de Bornhöved des séries très différentes de sols se sont développées en relation avec l'unité
géomorphologique et la situation du relief. Dans cette région où l'utilisation du sol est essentiellement agricole ce sont les séries de sols unies par la processus d'érosion et d'accumulation qui dominent. Les AA. présentent quelques exemples de séries
Air temperature ; Climatic variability ; Cracow ; Freezing ; Global change ; Poland ; Season ; Temperature ; Time series ; Twentieth Century ; Weather type ; Winter
Based on Kraków's measurement series of air temperature in the 20th century an attempt was made to analyse the winter season by means of some criteria which are important for the thermal conditions which-in turn-influence natural processes
Business cycle ; Comparative study ; Construction industry ; Economic growth ; Infrastructure ; Investment ; Time series ; World
The AA. investigate the nature of building trends and cycles from the 19th century to the present for eight major OECD economies. The Kalman filter is used to decompose the series into trends and cycles. Building cycles exist in all countries
Precipitation data for 8 stations in the lowland and foothill regions of Lesotho were analysed to characterise the geomorphological significance of precipitation from a soil erosion perspective. Lacking long series of recording rain gauge data
, short series of intensity recordings were used to establish a relationship between daily amounts and maximum storm intensity. The likelihood of high intensities is highest during December-February with considerably longer recurrence intervals
The formation of berms on sandy beaches is examined in connection with nearshore wave and sediment dynamics. A series of experiments on the formation of berms were carried out in a small-scale wave flume. Three growth types of berms were found
: landward, upward and seaward types. Time-series data of the beach profile obtained at Ajiga-ura beach, Ibaraki, Japan, were used for the examination of applicability of the experimental results to the field situation, where collapsing related berms
Climatic variation ; Global change ; Hydrometeorology ; Precipitation ; Runoff ; Russia ; Stream flow ; Temperature ; Time series ; Volga ; Water balance
En prenant pour exemple le bassin de la Volga, l'A. étudie les possibilités de l'emploi de méthodes d'analyse des séries hydrométéorologiques instrumentales en qualité analogues des variations possibles des ressources en eau sous l'influence d'un
Bulgaria ; Climatic variation ; Drought ; Global change ; Precipitation ; Seasonal variation ; Stream flow ; Time series ; Water ; Water management ; Water resources
Because water resources to a great extent depend upon climate dynamics, this paper develops the linkage of climatic fluctuations and water resources using time-series analysis of climatic parameters and some river runoff characteristics
Author introduces a new method which can be used for microclimatic research. The essence of the method is: data series are transformed to function by Lagrange interpolation or spline interpolation. Then the derivate is calculated and the values
Utilisation de mesures à haute fréquence (toutes les 8 heures) de la température du sol obtenues pendant plusieurs années par le programme d'enregistrement thermique du pipeline Norman Wells-Zama pour créer manuellement des séries de données
synthétiques avec des intervalles de mesures comprises entre 30 et 90 jours. Estimation des températures moyennes annuelles à partir de ces séries en utilisant des interpolations cubiques spline. En répétant la production de telles séries avec des intervalles
European part of Russia ; Forecast ; Moscow ; Temperature ; Time series ; Urban climate
Etude des propriétés statistiques des séries de caractéristiques climatiques pour le début, la fin, la durée et des températures moyennes pour la période de chauffage (saison froide). Les AA. montrent qu'il est possible de modéliser et de prévoir
des séries chronologiques pour une période de l'année à partir de la méthode dite de cadence multiple. Les vamleurs justifiées des précisions des dates du début et de lafin de la période de chauffage à Moscou sont plutôt élevées, environ 70 %. Données