Upper Thracian Lowland

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Upper Thracian Lowland


or Maritsa Lowland, low-lying plain in southeastern Bulgaria between the Rhodope Mountains in the south and Sredna Gora in the north. It is about 160 km long and about 40 km wide, with an altitude of 80 to 200 m. It is a downwarp filled with Paleogene (limestone, sandstone) sediments and with a layer of younger fluvial and lacustrine deposits. The sedimentary cover is pierced in places by magmatic rock (for example, the syenitic Plovdiv hills, altitude about 286 m). The climate is transitional between temperate and subtropical. The mean January temperature is 0° C, 0.3° C; the mean July temperature is 23° C, 24° C.

Precipitation is about 500-600 mm a year. The Maritsa River flows across the Upper Thracian Lowland. Chernozem-like soils, smolnitzas, are dominant. Almost all the lowland is plowed. Grapes, tomatoes, pepper, and other vegetables are grown, as are wheat, rice, cotton, and corn. Artificial irrigation is extensively used. There are lignite and gypsum deposits. The large cities of Plovdiv, Pazardzhik, Stara Zagora, and Dimitrovgrad are located on the lowland.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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Temperatures will drop, but still in the Upper Thracian lowland and in the extreme southwest regions will be hot.
Temperatures will drop but the Upper Thracian Lowland and the far southwest areas will still be hot.
It will blow a moderate wind in the Danube Plain and the Upper Thracian Lowland. Maximum temperatures will be mostly between 22 A[degrees] and 27 A[degrees].

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