پديد آورندگان :
رامشت، محمدحسين دانشگاه اصفهان - دانشكده علوم جغرافيا و برنامه ريزي , انتظاري، مژگان دانشگاه اصفهان - دانشكده علوم جغرافيا و برنامه ريزي , دلسوز، سوسن دانشگاه اصفهان
كليدواژه :
زمان , ژئومرفولوژي , فضا , هويت مكاني
چكيده فارسي :
يكي از مفاهيم بنيادين در ژئومرفولوژي، كه بسياري از نظريه پردازي ها بر اساس آن استوار شده، مفهوم زمان است. مفاهيمي چون يونيفورمي تاريانيسم، دور جغرافيايي، و ارگوديسيتي از نظريه هايي هستند كه سعي در بيان نحوه تحولات ارضي در بستر زمان دارند. ولي مبناي كار همه آن ها بر مفهوم زمان رخدادي استوار است. سازگارنبودن مفهوم زمان نجومي با بسياري از رخدادها و فرايند هاي طبيعي سبب شده تا ژئومرفولوژيست ها به مفهوم زمان رخدادي بيشتر توجه كنند. با توجه به اينكه به مفهوم زمان در ادبيات ژئومرفولوژي كمتر توجه شده، ضمن ارائه دقيقي از معني و مفهوم اين واژه در ژئومرفولوژي، كاربرد آن در مباحث زمين ريخت شناسي تبيين شد و با اتكا به يك آزمون آزمايشگاهي رابطه زمان استمرار شوك با زمان لختي، زمان واكنش، و زمان پاسخ در يك سيستم محيطي استخراج شد. نتايج اين پژوهش نشان مي دهد سيستم ها به هر شوكي با هر استمرار زماني واكنش نشان نمي دهند. افزايش زمان استمرار شوك با زمان واكنش سيستم رابطه اي دوال دارد. هرگاه زمان استمرار شوك با زمان واكنش برابر شود، زمان تاخيري برابر صفر مي شود و زمان تاخيري با ميزان شدت شوك رابطه معكوس دارد.
چكيده لاتين :
Introduction: The complexity of the phenomenon of time and its meaning has always been considered an obstacle to understanding the nature of time. Time is an important phenomenon in detailed discussions about its nature, particularly in philosophy and physics filed. Sun, Earth and rotations it should be considered a major factor in the definition of the concept of astronomical time.the effect of twenty-four-hour in organisms,consiste the large part of their biological activities. Even questions about the latitude of more than 70 degrees as well. This question is deeply connects us with other concepts of which the concept of time events.
the geomorphologist belived that the time shows the range changes and evolution of landscape . The evolution of natural phenomena over time can be oriented in the form of different models to examine and evaluate the concept can be interpreted mother theory of harvest of the main geomorphology . It is explicitly said to be the three major intellectual (historical method, dynamic method and the perspective of a systematic ) approaches have accidentally caused by different interpretations of the concept of time by geomorphologist.
Metodology: The experience allowed the time and its implications in perspective (Graph 1977) requires an experimental model to determine when concepts such as delay time ,reaction time ,relaxation time and response time, and their relation to the shock time with different magnitude assessed to check it In order to achieve this goal a drainage basin Laboratory was designed .
Model provision (watersheid) in an rectangular shape with dimensions of 162 cm length and width 215 carried. After modeling to measure the intensity of the rains, an artificial rain system was built and thereby control the intensity and time precipitation ratio was propelled to evaluate them.
For avoidance of any error the irrational numbers were used for the shock time .irrational numbers were chosen from 3 to 101 and the consequent in three separate stages for shock rainfall intensity one liter per minute, 3.8 min and 6 liters per minute assessed . The data used in this study, quantitative data with zero mathematical scalar time in three separate phases in the model was implemented. A total of 260 measurements were obtained tables and the calculation of it was done in three months. The breakdown of the figures, the relationship between the persistence of shocks time when other
elements based on a matrix tables (4) and (5) and (6), and seven models of relationship surveys and test the final results were extracted.
Result and Discussion: According to the matrix of the relationship between the persistence of the shock in the magnitude of one , 3.8 liter and six Liter analysised and after testing seven model 30 various manners as follows was obtained should be noted that 7 out of 30 the relationship was not significant survey and 23 were attained meaningful relationship.
Conclusion: Geomorphic systems and change their attitudes and behavior with a variable time, and therefore not explain several concepts used to express them. The task assigned to the variable time with different concepts shock time, latency, response time, response time and rest time and matter expressed in relation to this issue is that these variables can be together because these relationships may indicate a various states on the one hand and on the other hand is estimated prediction behavior.
What phase one, two and three field pilot test shock magnitude 1liter,3.8 and 6 min obtained indicate that the continuation of the shock relations with other concepts, and the second time on the complex relations firm, and the truth of the relationship provided up to certain extent. Each system can be described with the general rule for any kind of shock to be evaluated in a press statement following summarized
The relations obtained in the first phase that includes three linear and quadratic five relationship is reversed if the following key results to be understood
Systems don’t reaction to every Shook Time
With increase Shook Time , Reaction Time decrease.
The relation sheep between Shook Time and Reaction Time is dual.
If Shook Time and Reaction Time be equal , the Memory Time will be zero.
The relation between Delay Time and magnitude of Shook Time is inverse.
