Delineation of boundary between tropical/subtropical in the middle section for eco-geographic system of South China
China ; Climatic index ; Concept ; Ecosystem ; Geosystem ; Soil ; Southern China ; Subtropical zone ; Tropical zone ; Vegetation index ; Zonal geography
fluctuating zone of the study area are established. The tropical fluctuating zone explains different locating of different researchers. This paper also puts forward a new method to display boundary for eco-geographic regions.
This discussion results in new understanding on eco-geographic regions and their boundaries, especially on gradual changes of natural conditions between eco-geographic regions. It clarifies differences and causes of the differencies for the results
. New concepts of tropical, annual tropical, true tropical and tropical fluctuating zone are formed to understand tropical area. Based on the indexes of climate, vegetation and soil, boundaries of tropical, annual tropical, true tropical and tropical
Distributions and hydrological characteristics of tropical cyclone rainstorms and floods in China
Chine ; Crue ; Cyclone tropical ; Distribution spatiale ; Débit de pointe ; Hydrologie ; Orage ; Précipitation ; Variation saisonnière ; Zone climatique
China ; Climatic zone ; Flood ; Hydrology ; Pic discharge ; Precipitation ; Rainstorm ; Seasonal variation ; Spatial distribution ; Tropical cyclone
Regional distribution of the rainstorms and floods caused and affected by tropical cyclones are described and the geographical divisions of China are also given in this paper. The hydrological characteristics of tropical cyclone rainstorms
and floods are discussed and compared with that on non-tropical cyclones.
Multi-objective programming model of tropical crops in Hainan Island
Agroclimatology ; China ; Ecology ; Hainandao ; Mathematical model ; Model ; Multi-purpose programming ; Tropical zone
According to Hainan Island's biological characteristics, and existing structure of productivity of tropical crops and local climatic conditions, this paper carries on regional division of tropical crops by fuzzy mathematics. Based on calculation
of basic parameters for the formation of production, near-term optimum models of tropical crops structure of each region was established by means of multi-objective programming.
Climatology of tropical cyclone rainfall in the southeastern United States
Bilan hydrologique ; Climatologie ; Cyclone tropical ; Etats-Unis ; Etats-Unis du Sud-Est ; Humidité du sol ; Ouragan ; Précipitation ; Réseau d'observation
Climatology ; Hurricane ; Observation network ; Precipitation ; Soil moisture ; Tropical cyclone ; United States of America ; Water balance
Rainfall associated with tropical cyclones contibutes a significant amount to the annual rainfall in the southeastern United States. This study quantifies this amount from 1980-2004 and aims to determine the contribution of tropical cyclone-induced
rainfall to total rainfall and to estimate its relative importance in the context of the regional climatic water balance.
La forte intensité de l'irrégularité des pluies (surtout convectives) font que bien des régions sont soumises, alternativement, à deux types de calamités agricoles : inondations et sécheresses. - (JPB)
Tropical geography. An introductory study of the Humid Tropics
Essai d'introduction à la géographie des tropiques humides à partir de l'étude de grands thèmes: facteurs de délimitation de la région, définition des caractères du sous-développement, caractères du milieu physique, principales activités. (OC).
Relict properties in soils of humid tropicalregions with special reference to Central Africa
Africa ; Central Africa ; Microstructure ; Paleosols ; Pedogenesis ; Soil property ; Tropical zone
In contrast to temperate soils, where even small climatological or vegetational changes are often recorded in the soil material, most soils of the humid tropics contain few indications of past environmental changes. Almost no information exists
on relict properties or features recognized in tropical soils, except for studies of stone lines and lateritic gravel.
Decadal variations of intense tropical cyclones over the Western North Pacific during 1948-2010
Atmospheric dynamics ; Climatic variability ; Numerical model ; Pacific Region ; Tropical cyclone ; Tropical zone
Ciclón tropical ; Dinámica de la atmosfera ; Modelo numérico ; Región Pacífica ; Variabilidad climática ; Zona intertropical
Années 1948-2010 ; Cyclone tropical ; Dynamique de l'atmosphère ; Fréquence ; Modèle numérique ; Pacifique ; Pacifique du Nord-Ouest ; Trajectoire ; Variabilité climatique ; Zone intertropicale
influence des variations de la température de surface de l'océan (sur le centre et l'Est du Pacifique tropical) et de l'intensité du cisaillement vertical du vent. - (JPB)
with results from the first paleotempestological study undertaken in the Mosquitia to shed light on long-term risk of catastrophic storms in the region and to demonstrate the value of integrating these two research approaches.
On the dynamics of tropical cyclone structural changes
Asymétrie ; Atmosphère ; Australie ; Bande de vent violent ; Bilan énergétique ; Coupe aérologique ; Cyclone tropical ; Distance radiale par rapport à l'oeil ; Dynamique de l'atmosphère ; Evolution ; Extension horizontale ; Force ; Forçage ; Gphy
and with the documented observations of tropical cyclones in the Australian/south-west Pacific region. (JPB).
Though dependent on moist convection and other internal processes, the ultimate intensity, strength or size of a tropical cyclone is regulated by interactions with its environment. This conclusion is consistent with previous research findings
Predicting landslides from rainfall in a humid, sub-tropicalregion
Forecast ; Landslide ; Precipitation ; Slope ; Slope dynamics ; South Africa ; Statistics ; Tropical zone
Topography, geology and a humid, sub-tropical climate make the Durban region on the east coast of South Africa particularly prone to sliding mass movements. Records of individual landslides and landslide events between 1970 and 1990 were compared