2,019 research outputs found
Water supply and demand forecasting in the Zayandeh Rud Basin, Iran
No full textWater demandWater supplyForecastingWater useRiver basinsReservoirsIranZayandeh Rud BasinChadegan Reservoir
Groundwater chemistry of the Lenjanat District, Esfahan Province, Iran
No full textGroundwater / Surface water / Water quality / Wells / River Basins / Iran / Esfahan Province / Lenjanat District / Zayandeh Rud Basin / Chadegan Dam / Zagros Mountains
Sedimentary and environmental characteristics of the Gilan-Mazenderan plain, northern Iran: Influence of long- and short-term Caspian water level fluctuations on geomorphology
No full textThe south-southwestern Caspian coastal lowland in Iran, or the Gilan-Mazenderan plain, is a relatively narrow but long, composite depositional area of late Quaternary age. The Sefid Rud delta, the Anzali Lake (connected to the Caspian Sea by a meandering outlet 3.5 km long) and storm-dominated beaches are its prominent sedimentary features. They are controlled by the present water level of the Caspian Sea at -26.36 m in 2000. The Late Pleistocene-Holocene deposits of the lowland, which are covered commonly by a modern loess-origin soil, mainly consist of alternations of marine and non-marine sediments. The marine units form coastal terraces at 19-20 m (I), 2-0 m (II) and –6/-8 m (III) corresponing to the Late Khvalinian and Neocaspian transgressions. The deposits of the youngest terrace (terrace III) that represents a prograding beach-ridge complex are a consequence of several medium-term, cyclic water level oscillations in Late Holocene. Just after the initiation of the beach-ridge complex, Lake Anzali formed by damming of rivers and then by progradation of the complex in time forced to form the outlet of the lake. The nearest medium-term cycle lasted c. 65 years between 1930-1995 and the records showed that it included a lot of short-term (c. 4-5 yrs) and very short-term (week to months) water level oscillations. During the last erratic rise of sea level (1977-1996), the area of Lake Anzali doubled; the delta and the coastal sands including modern beaches were eroded on c. 30-100 m. Overall, a step-like morphology, repetition of marine and non-marine facies and also water level records of the last 75 years indicate that the ancient and recent deposition on the coastal lowland has been controlled by long- medium- and short-term fluctuations of the Caspian Sea level
Rudolph Meyer s/m Freund Rud. Hanhart z. fr. Erg
No full textDedikationssilhouette nach rechts von Rudolph Meyer, gewidmet Joseph Rudolf Hanhart (1836-1920)Anonyme/r Künstler/inHandschriftliche Widmung unterhalb des Bildes "R[u]dolph Meyer s[eine]m Freund Rud. Hanhart z[ur] fr[eundlichen] E[innerun]g
Rud. Syz s/m Hanhard zr. fr. Erinnerung
No full textDedikationssilhouette nach links von Rudolf Syz, gewidmet Joseph Rudolf Hanhart (1836-1920)Anonyme/r Künstler/inHandschriftliche Widmung unterhalb des Bildes "Rud. Syz s[eine]m Hanhard z[u]r fr[eundlichen] Erinnerung
Rud. Schneebeli s/m E. Rahn z. f. Erinnerung
No full textDedikationssilhouette nach links von Rudolf Schneebeli, gewidmet Johann Rudolf Rahn (1841-1912)Anonyme/r Künstler/inHandschriftliche Widmung unterhalb des Porträts "Rud. Schneebeli s[eine]m E.[?] Rahn z[ur] f[reundlichen] Erinnerung
R. Alder s/m Rud. Rahn zur freundl. Erinnerung
No full textDedikationssilhouette nach rechts von R. Alder, gewidmet Johann Rudolf Rahn (1841-1912)Anonyme/r Künstler/inHandschriftliche Widmung unterhalb des Porträts "R. Alder s[eine]m Rud. Rahn zur freundl[ichen] Erinnerung
Ferd. Schlaepfer s/m Rud. Rahn zur freundl. Erinnerung
No full textDedikationssilhouette nach links von Ferdinand Schlaepfer, gewidmet Johann Rudolf Rahn (1841-1912)Anonyme/r Künstler/inHandschriftliche Widmung unterhalb des Porträts "Ferd. Schlaepfer s[eine]m Rud. Rahn zur freundl[ichen] Erinnerung
Exploring field scale salinity using simulation modeling, example for Rudasht area, Esfahan Province, Iran
No full textSalinity / Simulation models / Soil-water-plant relationships / Soil properties / Climate / Irrigated farming / Water quality / Iran / Esfahan Province / Rudasht Area
Karl Schiess s/m l. Rud. Rahn zur freundl. Erinnerung
No full textDedikationssilhouette nach rechts von Karl Schiess († 1856), gewidmet Johann Rudolf Rahn (1841-1912)Anonyme/r Künstler/inHandschriftliche Notiz oberhalb des Porträts"Gestorben an Nervenfieber den 10. Oct 1856 in Herisau"Handschriftliche Widmung unterhalb des Porträts "Karl Schiess s[eine]m l[ieben] Rud. Rahn zur freundl[ichen] Erinnerung
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