Late Pleistocene e Holocene sea-level dynamics in the Caspian and Black Seas: Data synthesis and Paradoxical interpretations
Вантажиться...
Файли
Дата
2017
Науковий керівник
Укладач
Редактор
Назва журналу
ISSN
E-ISSN
Назва тому
Видавець
Анотація
Different multidisciplinary data concerning the paleodynamics of sea-level variations in the Caspian and
Black seas are controversial in some aspects. There are at least three paradoxes that are discussed in the
paper. The Paradox No. 1 relates to the Early and Late Khvalynian transgressions that occurred in the CS
during the second part of MIS 3 (~35e25 ka BP) and the Late Glacial epoch (~17e12 ka BP), respectively. It
is unclear what the main source or sources of water were that caused them. Paradox No. 2 emerges from
the comparison of climate events and transgressive-regressive cycles in the Caspian Sea and the Black
Sea. It implies that large sea-level anomalies occurred in accordance with global climate changes
(because they are influenced by climate variations). However, other (not so long-lived) sea-level fluctuations
are poorly correlated with climate events. The question is why climatically-induced sea-level
changes did not follow climatic variations. Paradox No. 3 concerns the contradiction between the
massive water discharge from the Black Sea into the Sea of Marmara via the Bosphorus Strait and the
Black Sea level fluctuations in the Latest Pleistocene-Holocene that could not exist simultaneously. It is
shown that Paradox No. 2 has been solved, at least on conceptual level. Solutions to Paradoxes No. 1 and
No. 3 are still lacking: further geological and geochronological evidence as well as climate simulation are
required. Formulation of solutions for these paradoxes should make a major contribution not only to the
problems of the Caspian and Black seas’ paleogeography, but also provide help in explaining the reasons
for inadequate simulation of regional climate changes. This is important in the context of the development
of models for future climate prediction
Опис
Ключові слова
Paradoxes, The Caspian Sea, The Black Sea, Climate simulation, The Langevin equation
Бібліографічний опис
Quaternary International