Description: Das Projekt "Klimaaenderungen im Spaetpleistozaen im suedlichen Arabien" wird vom Umweltbundesamt gefördert und von Universität Bern, Geologisches Institut durchgeführt. Leading Questions: - Climate change in southern Arabia over the last several 100000 years: - Change of location and intensity of the Indian Ocean monsoon; - Relationship between continental and marine climate records; -Relationships between climate and human activity. Abstract: Our paleoclimate work in Oman is based on two types of deposits, carbonate cements in alluvial gravels and cave deposits. The results of our initial study of gravel cements suggested that rainfall in Oman was at one time considerably greater than at present, possibly due to more vigorous monsoonal circulation and rainfall in the past, and that oxygen and carbon isotope ratios are related to the amount of rainfall an area receives. We are presently further investigating this hypothesis by analyzing cave deposits, which should be a more easily datable and more continuous record of paleoclimate. We have sampled cave systems in both northern and southern Oman. The research we plan for these samples focuses on using the oxygen and carbon stable isotope record together with U/Th dating to interpret how climatic conditions have varied over perhaps the last few 100 ka or longer. Petrography of these samples, particularly UV-fluorescence, will aid in sample selection and in interpreting the climatic record.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Zement ? Tierhaltungsanlage ? Paläoklimatologie ? Carbonat ? Monsun ? Kohlenstoff ? Sauerstoff ? Arabische Halbinsel ? Kies ? Gelöster organischer Kohlenstoff ? Gesteinskunde ? Isotop ? Studie ? Erdgeschichte ? Flächenanteil ? Klima ? Klimawandel ? Niederschlag ? Indischer Ozean ? Isotopenverhältnis ? Oman ? Pleistozaen ?
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1996-02-01 - 2001-02-28
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