Geomorphologic Causes and Results of Earth Fissures in Ashkzar of Yazd

Subject Areas : Geopolitic

ایرج Jabari ¹ (ندارد)
علی Rezaeyan ² (ندارد)

Received: 2015-01-16 Accepted : 2015-01-16 Published : 2004-07-22

Keywords: Land subsidence, Earth fissures, Ashkzar of Yazd, Geomorphology,

Abstract :

Ashkzar region in Yazd province has been subjecting to fissures on the ground sincethe last two decades.This has caused some damages to dwellers. The fissures haveaffected some previous landforms as nebkhas and dunes and have made up somegullies and depressions that they fill with water on rainfalls times. These fissures werecreated by subsidence. Statistics analysis such as Analysis of variance, Tukey –Kramer Analysis,and t-test, and also laboratory and field studies show that this landsubsidence was resulted from ground water overconsuming and then falling the watertable. The Subsidence rate is investigated through external coming up of pipes andBouwer (1978) method. According to, amount of subsidence obtained is estimated tobe about 62 cm from 1973 to 2001