ZAMAN, İKLİM VE AKARSU GELİŞİMİ

Year 2005, Volume: 3 Issue: 2, 70 - 80, 01.08.2005

J. Vandenberghe Uğur Doğan , Erdem Bekaroğlu C.

https://doi.org/10.1501/Cogbil_0000000058

Abstract

Akarsu gelişimi uzun vadede (glasyal/interglasyal salınımlar) iklim değişimlerinin genel yapısına ayak uydurur. Ancak, bir soğuk-sıcak dönem ölçeğinde, akarsu aktivitesinin jeomorfolojik etkisi en iyi iklim değişiminin süresiyle açığa vurulur. Bu periyotlardaki flüvyal aktivite sadece kısa bir zaman için devam eder. Yani, bir iklim değişikliğinden sonra bir drenaj havzasındaki içsel gelişim, morfolojinin ve sedimantasyon tipinin gecikmeli tepki vermesiyle son bulur. Sonuçta, en kısa zaman ölçeğinde, yerel eşikler akarsu sisteminin vereceği tepkide oldukça belirleyici bir rol oynayabilirler. Bu çalışmada, flüvyal gelişim ile iklim arasındaki ilişkinin basit olmadığı; fakat temel olarak zamana bağlı olduğu sonucuna varılmıştır

Keywords

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Timescales, Climate and River Development

Abstract

In the long term (glacial/interglacial sequences), river development follows general climatic evolution. However, at the scale of one cold-warm cycle, it appears that the geomorphological effect of river activity is best expressed at times of climatic change. Such periods of pronounced fluvial action last only a short time. In more detail, the internal evolution in a drainage basin after a climatic event results in a delayed response of the morphology and sedimentation pattern. Finally, on the shortest timescale local thresholds may play a decisive role in the reactions of river systems. It is concluded that the relation between fluvial development and climate is not a simple one, but is fundamentally dependant on the timescale

Keywords

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