Mehran Maghsudi; Sepideh Zandieh
Volume 16, Issue 61 , May 2007, , Pages 35-38
Abstract
Today, almost all reports, scholarly research and applied projects that somehow deal with the dispersion of geographic phenomena use thematic maps. In the European countries production of thematic maps go back to the 17th century, but in our country, the preparation of these maps began with the compilation ...
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Today, almost all reports, scholarly research and applied projects that somehow deal with the dispersion of geographic phenomena use thematic maps. In the European countries production of thematic maps go back to the 17th century, but in our country, the preparation of these maps began with the compilation of atlases by some organizations in the 1960s. A special type of thematic maps which has been widely used, is the choropleth map. Choropleth maps are used to display the distribution of quantitative phenomena over a political or administrative area such as province, city, district and rural districts. Choropleth maps are usually represented by graduated color or hachures. An important point in the development of choropleth maps is to find the appropriate classification system for the data utilized. In fact, there are various classification systems in this regard that may be confused by users if a proper classification system is not selected for information display. In this research, we tried to study the classification methods in choropleth maps and specify the characteristics of each of them.
Bahram Azadbakht (Translator)
Volume 15, Issue 57 , May 2006, , Pages 16-18
Abstract
Digital models of the Earth and satellite information through structural analysis of the Earth lead us to a new understanding of the relationship between volcano and the science of formation of the earth. A DTM was presented from the Mount Erciyes (3917m high), which is on the scale of 10 meters with ...
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Digital models of the Earth and satellite information through structural analysis of the Earth lead us to a new understanding of the relationship between volcano and the science of formation of the earth. A DTM was presented from the Mount Erciyes (3917m high), which is on the scale of 10 meters with transverse and longitudinal sections and with an area of about 3800 km2. The ETM satellite data is used to identify the morphological characteristics of the Erciyes mountain range. These observations and analyses are capable of analyzing, measuring and monitoring the behavior of the Earth's layers using the DTM satellite data. To make use of both RST and DTM simultaneously provides a new perspective for understanding the morphological characteristics of mountains and volcanoes in the Earth sciences. A 3D image of Mount Erciyes not only played a role in identifying its volcanic formation characteristics, but also in determining the location of the volcanic behavior. Several maps were provided using DTM at different slope levels. The morphological characteristics of the Erciyes volcano mountain include glacial masses and linear land marks, which are discussed separately in this paper using both RES and DTM methods.
