Ograniczanie wyników

Czasopisma help
Autorzy help
Lata help
Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 32

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  klimat umiarkowany
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
4
88%
Sylwan
|
2001
|
tom 145
|
nr 05
5-13
Under an extensive tourist penetration, mountain areas have been experiencing a high degree of anthropogenic degradation. Tourist traffic leads to the destruction of vegetation along roads and paths and nearby facilities, largely as a result of a considerable acceleration of geomorphologic processes. The paper presents certain environmental considerations, including relief, geology and climate, as well as micro-relief within tourist paths and morphogenetic processes influencing slope transformation within tourist areas in selected mountain areas. The general issue of the tourist-influenced degradation was discussed using two high mountain areas: the Tatras and Monts Dore mountains (Massif Central, France). In all of those areas, the anthropogenic geomorphologic features are highly diversified and well visible in the overall land relief. Tourist paths, roads and ski pistes constitute areas of overlapping natural and anthropogenic degradation. Wherever the natural vegetation, and especially the turf cover has been destroyed a state of permanent imbalance can be observed, as well as the development of crionival, aeolian and pluvial relief. The natural and anthropogenic processes influencing the morphodynamics of the roads and paths greatly vary in rate depending on the ground resistance, slope inclination and exposure, morphodynamical tier, type of surface, vegetation cover, season of the year and the intensity of the tourist traffic. Human activity in the mountains accelerates the circulation of energy and matter within individual slopes but sometimes also within entire massifs. The Monts Dore massif revealed the greatest degradation of its paths and tourist roads, followed by the Tatras.
The aim of the study is to show and compare variation of the annual and daily course of thunderstorms in selected European cities in 2005-2009. Data on thunderstorms originate from dispatches METAR for three airport stations: London Gatwick, Warsaw Okęcie and Moscow Sheremetyevo. These cities represent the various types of climate: warm temperate marine, transitional and continental. Thunderstorms mostly occurred in Warsaw - 207 (Moscow - 174; London - 71). The maximum of thunderstorms frequency, in the yearly course, in all towns occurred in July (Warsaw – 11,8; Moscow - 13,4; London - 5,0). Thunderstorms predominantly started at 13³⁰ in London, 17⁰⁰ in Warsaw, 18⁰⁰ in Moscow (13³⁰ means period 13⁰¹- 13³⁰, 17⁰⁰ means period 16³¹-17⁰⁰ etc.). Thunderstorms most often ended at 13³⁰ in London, 17⁰⁰ in Warsaw, 20³⁰ in Moscow. There were dominated, at all stations, brief thunderstorms, which lasted for 30 minutes. The longest thunderstorm remained 9 hours (Warsaw), 5,5 (Moscow), 4,5 (London).
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.