جستجوی مقالات مرتبط با کلیدواژه "subduction" در نشریات گروه "جغرافیا"

Tsunami is a natural phenomenon that can not be prevented from occurring and is considered as one of the most important oceanic disasters in the world. In this collection, along with providing a definition of it, the types and causes of its occurrence are presented and, according to its geographical distribution in the oceans and places affected by the subduction, some special sites are introduced and, according to its destructive results, it has been attempted, through making suggestions, to take measurements for places that are located along the coastline of the subduction by the way of presenting information about its effects, in order to anticipate the potential risks and possible damages. Considering that in the southern part of Iran, there is the coastline subduction of the Oman Sea and the tectonic of the Indian Ocean, there are potentials for such an incident.

Raised beaches has raising gradually since 30-50 thousands years ago, and the amountof raising has estimated 1-3 milimeters per year. These matchless beaches are observablefrom port of Jask to Gwater bay, and continue to after port of Karachi, and therate of raising increase from west to east. So that their height is about 1 meter in Jaskport, more than 100 meters in Chahbahar and Tis, and about 500 meters in Karachi ofPakistan.The Cause of raising beaches is related subduction and tectonic forces in this part ofIran beaches, that the amount of subduction is 5 centimeters per year and intensity ofraising in beach is very more than plain and Makran mountains. Since the subductionis active, the raising of beach is continuing yet, and beaches are uplifting steply.There is very reasons of prove raising beaches that will be point in later discussions.