Periodic Changes of the East Strait of Hormuz Shore Line by Remote Sensing

One of the sensitive systems in geomorphology is the coastal system in which rapid change is noted due to the collision of the two dynamic environments of sea and land. Coastal lines can record evidence of geomorphological alterations. Due to various reasons such as environment changes، global warming، and issues regarding human activities، studies and quantitative measurements from periodic changes are beneficial for the environmental management of shores. Remote sensing data and satellite images are considered to be reliable، concise sources for investigation and interpretation of the coastal line and for performing quantitative measurements. In this study we have used the TM-5 satellite images from 1986 and 2010، in a 24-year schedule to monitor the costal changes of Eastern Hormoz، based on the maximum likelihood method. Then، by using quantitative measurements، we analyzed coastal line changes according to pixel points، percentage of changes and amount of changed area. In addition، we investigated the trend in changes in the width and coastal line for a two-year period. In order to evaluate in a wider spectrum، we studied four sectional samplings. The results of this study revealed that in the 24-year this area has undergone considerable coast line changes، such that the changes reached to 2. 8 kilometers in some areas، which may represent the fact that the hot line of water in 1986 progressed more toward the beach when compared to the 2010 data. In consideration of the coastal line changes and the 2010∕1986 ratio، the level of changed area is 29،320،200 m2، and the percent change is 5،6% of the investigated coastal line which was prone to periodical changes.