Summary
After an extended critical evaluation of a wealth of historical sources, the history of the Dead Sea level fluctuations is reviewed with accuracy since 1800 (Klein, 1961). Earlier data since 1100 AD based on landmarks and tree-ring data (Klein, 1982, 1985) are also summarized. Since 1930 interannual fluctuations are compared with area-averaged rainfall data from the western and eastern part of the catchment, as well as with rainfall records from Jerusalem and Amman. Correlation analysis lead to two linear regression equations for the period 1930/1931–1962/1963 (undisturbed) and 1963/1964–1983/1984 after diversion of water from Lake Tiberias and Jordan River. From these equations, the average annual effect of this diversion results to about −24 cm; in very moist years this effect is insignificant.
Zusammenfassung
Auf der Grundlage einer kritischen Auswertung einer Fülle von Quellen werden zunächst die Spiegelschwankungen des Toten Meeres seit 1800 genau behandelt (Klein, 1961). Eine zusammenfassende Darstellung der Schwankungen ab 1100 A. D. wird aus historischen Quellen über die Landmarken des Seeufers und Baumringdaten (Klein, 1982, 1985) abgeleitet. Die interannulären Schwankungen des Seespiegels seit 1930 werden verglichen mit Gebietsmitteln des Niederschlages vom westlichen wie vom östlichen Teil des Einzugsgebietes, ebenso mit den Niederschlagsreihen von Jerusalem und Amman. Eine Korrelationsanalyse führt zu zwei linearen Regressionsgleichungen für die ungestörte Periode 1930/1931 bis 1962/1963, sowie für die Periode 1963/1964 bis 1983/1984, nach der Ableitung von Wasser zu Bewässerungszwecken aus dem See Genezareth und dem Jordan-Fluß. Eine Abschätzung des mittleren Effektes aus diesen Gleichungen ergibt etwa −24 cm pro Jahr; in sehr feuchten Jahren ist der Effekt unbedeutend.
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Klein, C., Flohn, H. Contributions to the knowledge of the fluctuations of the Dead Sea level. Theor Appl Climatol 38, 151–156 (1987). https://doi.org/10.1007/BF00868099
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DOI: https://doi.org/10.1007/BF00868099