بررسی علل افت آبهای زیرزمینی دشت نورآباد ممسنی با تاکید بر نقش فعالیت های تکتونیکی و بهره برداری از منابع آب زیرزمینی

هدف از انجام این مطالعه بررسی علل افت آبهای زیرزمینی بر اثر فعالیت های تکتونیکی ، برداشت های بی رویه و خشکسالی های اخیر در چارچوب نظریه ژئودوآلیته می باشد. بدین منظور و با هدف ارزیابی فعالیت های تکتونیکی منطقه، از برخی شاخص های ژئومورفیک از جمله شاخص ها(bs)، (af) ، (t)، (j) ، (hi)، (vf)، (s) ، (sl) ، (delta) ، (iat) و نقشه های هم عمق و هم افت حوضه استفاده شده است. بررسی های انجام شده نشان می دهد که میزان بارش در سال 82 نسبت به سال88، 310 میلیمتر کاهش و به تبع آن تعداد چاه ها 217حلقه افزایش یافته و میزان برداشت از سطح چاه ها نیز 58298659 میلیون متر مکعب بر ساعت کاهش یافته است. همچنین میزان متوسط عمق چاه ها 10 متر افزایش یافته به طوری که بیشترین میزان افت مربوط به چاه خومه زار درحدود 26 متر واقع در بخش جنوبی حوضه است که این شواهد نشان می دهد در محدوده آبخوان علاوه بر نقش تکتونیک در بازه طولانی مدت، نقش فعالیت های انسانی و خشکسالی ها هم می توانند جزء عوامل موثر در افت آب زیرزمینی و توسعه ژئودوالیتی در سطح دشت به شمار آیند.

Investigating the causes of groundwater leakage in Nahabad Mamsan plain using geomorphic indices based on geo Dualiteh theory

In evaluating and studying natural phenomena, we sometimes encounter certain seemingly independent forms and processes and phenomena that are related to each other and can be analyzed through a series of mathematical equations and correlations, but sometimes paired phenomena It is found that they have certain relations with each other, but these relationships can not be called correlation, but their relationship has caused them to be presented as a double (a type of conjugacy) and they would appear to be opposing reactions in terms of collocation. The tectonic changes, especially the neonate movements, and its effects and consequences on groundwater reserves of these types of reactions. The purpose of this study is to investigate causes of groundwater drops in the framework of geodetic theory. With regard to the fact that in recent years, the water level in the northern plain of Mangasani has fallen sharply. Undoubtedly, nonstructural activities in the region, along with other influential factors (uncontrolled harvesting of groundwater resources, droughts, etc.), can be attributed to The title is one of the main causes of water loss in the region. For this purpose, with the aim of evaluating the tectonic activity of the area, some geomorphic indices such as basin shape index (BS), drainage asymmetry index (AF), inverse topographic symmetry (T), mountain front sinus index (J), hypersonic integral (Hi), Valley Depth Wide Index (VF), River Sinusity Index (S), Longitudinal River Gradient (SL), Relative Tactical Rating Index (Iat), and Hierarchical Anomalies Index (Δa) have been used. The results show that the whole basin is dynamic in terms of tectonic activity. The tectonic situation in the range and the results of statistical data indicate a change in the level of groundwater table as a result of tectonic changes in the southern plain of Nur Abad, as evidenced by the fact that the depth of the station was 89 meters less than 82 meters The highest drop in the Khomeghar well is about 26 meters in the southern part of the basin, in line with Kazeroon's active fault.