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- Title
AZ ALSÓ-TISZA MENTI ÁRTÉR ÉS A MAROS HORDALÉKKÚP KÉSŐ-PLEISZTOCÉN ÉS HOLOCÉN FEJLŐDÉSTÖRTÉNETE.
- Authors
TÍMEA, KISS; BORBÁLA, SÜMEGHY; PÉTER, HERNESZ; GYÖRGY, SIPOS; GÁBOR, MEZŐSI
- Abstract
The development and relationship between an alluvial plain and a neighboring alluvial fan was evaluated on the case of the Lower Tisza Region and the Maros alluvial fan. The paleo-channels on the surface differ in their size and channel-pattern, enabling us to reconstruct the paleo-direction changes and fluvial activity of the rivers. Based on the OSL dating the exact period of the fluvial activity could be determined, and the morphometric parameters of the channels refer to bankfull discharge values. On the surface of the Maros alluvial fan the oldest paleo-channels (a-d) run towards north and northwest, and carried much higher discharge (2-3500 m3/s), than of the present-day Maros. At the same time along the Tisza large meanders were developed, carrying also significant discharge (10-15000 m3/s). At the boundary between the Pleistocene and the Holocene the Tisza incised and the floodplain became two-leveled. At the same time the discharge did not change, thus the incision was probably induced by tectonic activity. As the erosional base of the Maros lowered, the Maros had changed its course considerably, as 8.5 ± 1.1 ka ago it turned to south (e-f paleo-channels) towards the most intensively sinking lower floodplain section of the Tisza River. At this time due to the increased slope the pattern of the Maros became braided for a short time. During the Holocene the discharge of the rivers continuously decreased to the present values (Tisza: 1980 m3/s, Maros: 680 m3/s).
- Subjects
TISZA River; HUNGARY; ALLUVIAL fans; RIVER channels; RIVERS; TECTONIC landforms
- Publication
Földrajzi Közlemények, 2013, Vol 137, Issue 3, p269
- ISSN
0015-5411
- Publication type
Article