ABSTRACT Settlement the establishment of population and activity system and determine the application is more important in the line with the population grow. With the increasing the population in cities and the requirement to the housing and new facilities, towns formation is constantly changing. The geomorphologic phenomena and demographic changes have a mutual relationship with each other and each have an effect on each other. Therefore, the main objective of this study is to identify geomorphologic phenomena and to evaluate the effect and role of these phenomena in the distribution of Bojnord Town population. The required information is collected by document-library method and then completed by field operations and the data is analyzed by G.I.S software. Then, it's been investigated the effects of these phenomena on distribution of Bojnord Town population by statistical information, as well as by adaptive operations, to overlay the maps and data layers with each other and create the new layers. The result of the study of all effective factors confirms that the Geomorphologic effects play a crucial role in the replacement of the population in different parts of the city and its development process. Of course, the geomorphologic effects doesn't affect on a small percentage of population that this issue follows the serious problems. Keywords: Geomorphologic Phenomena, Urban Morphology, Population Distribution, Bojnord Town INTRODUCTION The necessity of recognizing the geomorphology different zones related to the population and activity establishment system is due to the effects that these forms have on the locating and deploying and operating system. One of the principles and necessities for planning and preparation of land is to know environmental context and its involvement in the planning and management of the land (Ranjbar, 2011, Iran Geographic Society). Geomorphology is the knowledge of land configuration, understanding and scientific interpretation of the origin and how formation of the earth's natural landscapes in terms of rough and surface forms that it's been studied mainly the configuration of the land (Rahnamaei, 1992). Forms and processes of geomorphology has had a very significant role long ago in how settlement of population and also population distribution in different parts of the world. So many human civilizations largely relate to this category. Today, geomorphology studies are the bases of the earth surveys. No matter from what are the origins of geomorphology phenomenon, they affect on the formation of population centers as the surface condition. Geomorphologic units have always been associated with vitality and dynamism of the natural environmen
