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Solution-subsidence and other types of collapse failures developed in the vicinity of Sazlıca have been a major source of
environmental problems such as groundwater pollution, soil erosion, and foundation failures. Extensive pumping of water from
the Lake Dipsiz during irrigation seasons creates landslide developments at the shores of the lake. Five stages of landslide
development were observed in the unconsolidated soils around Lake Dipsiz. Bowl-shaped solution-subsidence features with depths
from 1 to 3 m and diameters between 1 and 60 m were formed due to excess pumping, and recharge and discharge features of unconfined
aquifer. The pumping activities must be controlled to prevent further environmental problems. Lake Dipsiz and other subsidence
developments are the groundwater exposure areas highly vulnerable to contamination. The proposed remedies for overcoming the
environmental problems are the establishment of conservation areas around such natural features; ceasing the removal of top
soil, controlling the urbanization, and keeping the livestock farming away from the areas susceptible to pollution.
Received: 2 June 1997 · Accepted: 16 January 1998 相似文献
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