[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
Main Menu
Journal Information::
Articles archive::
For Authors::
For Reviewers::
Contact us::
Site Facilities::
Search in website

Advanced Search
Receive site information
Enter your Email in the following box to receive the site news and information.
:: Volume 16, Issue 55 (12-2016) ::
جغرافیایی 2016, 16(55): 137-153 Back to browse issues page
Correlation between Earthquake Occurrence, Day times and Rainfalls in Iran
Abstract:   (6228 Views)

In this research has been tried to do a statistically study in Iran and geomorphic zones to open a statistically discussion about time of earthquakes and their probably correlation to amount of rainfalls at some days before earthquakes.Earthquakes including 4 Richter and above records was obtained from site of IIEES (International Institute of Earthquake Engineering and seismology ) and the rainfall records occurring 10, 15, 20, 30 and 40 days before the earthquakes occurrence (DFEO). All of data and then data relation to each geomorphic states sort on excel spreadsheet and analyzed at 19 version of SPSS software using to different tests. X2 test and phi test show that there isn't any significant difference between occurrence of earthquakes frequency at day times and nights during 30 years. Spearman correlation coefficient didn’t show a significant relationship between amount of rainfalls during 4 periods (10, 15, 20, 30, and 40 DFEO) and earthquakes. X2 test and Cramer's V test also showed a poor association between rainfalls and earthquakes numbers. However, more study on data elucidate that it can find a significant correlation at some years. Results showed there is a relation between frequencies of occurrence rainfalls for 10 DFEO and frequencies of earthquakes at the Zagros state. Nonetheless, it wasn't observed any relation when the rainfalls under 10 mm unaccounted in analysis. So, this clears that more earthquakes at the Zagros state occurred at lack or less rainfall situation. But, a more study on data during the time periods showed a significant relation for 10 and 15 DFEO in 1996 on which occurrence of earthquakes has increased along with increasing of precipitation to 38 mm limit namely, among of 52 earthquakes, 14 cases of earthquakes have included more than 10 mm and less than 38 mm rainfall, whiles, it has occurred 28 cases of earthquake when rainfalls have passed from 38 mm limit.

Keywords: fault, Earthquakes, rainfall, day times, Iran.
Full-Text [PDF 1346 kb]   (1116 Downloads)    
Type of Study: Research | Subject: Special
Received: 2014/07/20 | Accepted: 2016/12/4 | Published: 2016/12/4
Add your comments about this article
Your username or Email:


XML   Persian Abstract   Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Correlation between Earthquake Occurrence, Day times and Rainfalls in Iran. جغرافیایی 2016; 16 (55) :137-153
URL: http://geographical-space.iau-ahar.ac.ir/article-1-1034-en.html

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 16, Issue 55 (12-2016) Back to browse issues page
فضای جغرافیایی Geographic Space
Persian site map - English site map - Created in 0.18 seconds with 37 queries by YEKTAWEB 4657