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Grundwasser

, Volume 23, Issue 1, pp 5–15 | Cite as

Hydrogeology of the Umm Er Radhuma Aquifer (Arabian peninsula)

  • Heiko DirksEmail author
  • Hussain Al Ajmi
  • Peter Kienast
  • Randolf Rausch
Fachbeitrag
  • 181 Downloads

Abstract

The aim of this article is to enhance the understanding of the Umm Er Radhuma aquifer’s genesis, and its hydraulic and hydrochemical development over time. This is a prerequisite for wise use of the fossil groundwater resources contained within.

The Umm Er Radhuma is a karstified limestone aquifer, extending over 1.6 Mio. km2 in the eastern part of the Arabian Peninsula. Both epigene and hypogene karstification contributed to the genesis of what is today the most prolific aquifer in the region. Besides man-made abstractions, even the natural outflows are higher than the small recharge (natural storage depletion). The Umm Er Radhuma shows that large aquifers in arid regions are never in “steady state” (where inflows equal outflows), considering Quaternary climate history. The aquifer’s adaption to climate changes (precipitation, sea level) can be traced even after thousands of years, and is slower than the climate changes themselves.

Zur Hydrogeologie des Umm Er Radhuma Aquifers (Arabische Halbinsel)

Zusammenfassung

Dieser Übersichtsartikel soll zum Verständnis von Aquifergenese und zeitlicher Entwicklung von Hydraulik und Hydrochemie des Umm Er Radhuma aquifers beitragen. Dieses Verständnis ist notwendig, um die darin enthaltenen fossilen Grundwasserressourcen sinnvoll zu nutzen.

Der Umm Er Radhuma Aquifer ist ein verkarsteter Kalksteinaquifer und erstreckt sich über 1,6  Mio. km2 im Osten der Arabischen Halbinsel. Sowohl epigene als auch hypogene Verkarstung haben zur Genese des heute ergiebigsten Aquifers in der Region beigetragen. Neben den anthropogenen Grundwasserentnahmen sind auch die natürlichen Abflüsse aus dem Aquifer grösser als die geringe Grundwasserneubildung, es findet eine natürliche Speicherentleerung statt. Der Umm Er Radhuma zeigt, dass große Aquifere in ariden Gebieten nie im stationären Zustand sind, wenn man die Quartäre Klimageschichte berücksichtigt. Eine Anpassung der Grundwasserdynamik an die Klimaänderungen (Niederschlag, Meeresspiegel) kann auch nach mehreren tausend Jahren noch beobachtet werden, sie ist langsamer als die sie verursachenden Klimaänderungen selbst.

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Copyright information

© Springer-Verlag GmbH Deutschland, ein Teil von Springer Nature 2018

Authors and Affiliations

  1. 1.Dornier ConsultingAbu DhabiUnited Arab Emirates
  2. 2.Ministry of Water & ElectricityRiyadhSaudi Arabia
  3. 3.TU DarmstadtDarmstadtGermany

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