Scientific- Research Quarterly of Geographical Data (SEPEHR)

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Volume 32 (2023)

Volume 31 (2022)

Volume 30 (2021)

Volume 29 (2020)

Volume 28 (2019)

Volume 27 (2018)

Volume 26 (2017)

Volume 25 (2016)

Volume 24 (2015)

Volume 23 (2014)

Volume 22 (2013)

Volume 21 (2012)

Volume 20 (2011)

Volume 19 (2010)

Volume 18 (2009)

Volume 17 (2008)

Volume 16 (2007)

Volume 15 (2006)

Volume 14 (2005)

Volume 13 (2004)

Volume 12 (2003)

Volume 11 (2002)

Volume 10 (2001)

Volume 9 (2000)

Volume 8 (1999)

Volume 7 (1998)

Issue 27

Issue 26

Issue 25

Issue 28

Volume 6 (1997)

Volume 5 (1996)

Volume 4 (1995)

Volume 3 (1994)

Volume 2 (1992-1993)

Volume 1 (1990-1992)

Image Digital Processing

Mahdi Modiri

Volume 7, Issue 26 , August 1998, Pages 2-6

Abstract

Most of satellite images are received in digital form and the logical way of dealing with them is digital processing. Human interprets images very well. However, our eyes have limitations in observing black-and-white pictures in a range of electromagnetic waves’ spectra through looking at colored ... Read More

The DGPS Positioning Method

Abbasali Salehabadi

Volume 7, Issue 26 , August 1998, Pages 7-13

Abstract

Instantaneous application of distance corrections in the DGPS relative positioning method has led to increase of precision and validity of this method. While great errors such as atmospheric delays and unusual fluctuations in satellite clocks’ behavior and orbital information can affect relative ... Read More

Green Space and its Role in Urban Development

Rahmat Mohammadzadeh

Volume 7, Issue 26 , August 1998, Pages 14-17

Abstract

While in the past the limited area of cities and ease of access of inhabitants to the surroundings had caused green spaces to have their manifestations mainly in activities concerning beauty and appearance of urban areas, today, owing to reasons such as population growth, physical growth of cities, development ... Read More

Preparation of Thematic Maps Using Satellite Images - Part VI

Hamid Malmirian (Translator)

Volume 7, Issue 26 , August 1998, Pages 18-24

Abstract

The progress made over the past three decades in cartography, remote sensing and geographic information systems is due to the necessity of establishing new connections among currently specified technical regulations. Great efforts have been made to realize desirable collection of various cartographic ... Read More

A Small Atlas ( Ninety-Three Years) of a Grand Empire (Six-Hundred and Thirty-Three Years, Collapsed)

Mohammad Purkamal

Volume 7, Issue 26 , August 1998, Pages 25-44

Abstract

Today Turkey is one of the leading countries in terms of topographic coverage maps, and has finished its 1: 25000 coverage maps in five colors using classic and analogue photogrammetric methods. Currently the organization in charge of national surveying, namely the General Directorate of Land Registry ... Read More

The Role of Tectonics in Dispersion of Iran's Mineral Resources

Reza Farhadi

Volume 7, Issue 26 , August 1998, Pages 45-51

Abstract

The plate tectonics is a new model for classification of sedimentary environments and lithofacies. Based on this model, Iran is divided into several different units, and each unit has its own sedimentary basins of lithofacies and, as a result, specific mines. The rift birth process in the Central Iranian ... Read More The plate tectonics is a new model for classification of sedimentary environments and lithofacies. Based on this model, Iran is divided into several different units, and each unit has its own sedimentary basins of lithofacies and, as a result, specific mines. The rift birth process in the Central Iranian Plateau crust and during Infra-Cambrian has been associated with formation of iron, nickel, cobalt, copper and magnesite mines. The Alborz orogenic belt is the result of closure of the Tethys Sea and is considered to be the site of collision of the Iranian Plate with the Turan Plate. In this belt, foreland basins are the site for the formation of coal reserves. Volcanic activities of the third era have brought about mines of volcanic and vein type in the Alborz. The Zagros orogenic belt has been formed and is still dynamic due to submergence of the crust of the New Trthys Ocean under the micro-continent of Iran and during the collision of this micro-continent and the shield of Arabia. In this orogenic belt, Khuzestan plain and the folded Zagros belt are the focus of massive reserves of hydrocarbons. High Zagros ophiolites are sites of chromite reserves. Sanandaj-Sirjan area is a fore-arc basin, and the Isfahan-Malayer mineral belt in this area contains countless indices of lead and zinc sedimentary volcanic mines. Finally, the volcanic belt of Urumieh-Dokhtar is considered as the volcanic arc of the shell subduction system of the New Tethys Sea, and it is known in Iran as the copper belt. The Lut block is part of the Iranian micro-continent, and the Diorite granite masses of Zahedan - Dehslam and Bazman are considered to be products of active continental margin, have been formed with the opening of the New Tethys Sea and contain tin and tungsten minerals. Plutonic volcanic belt at the southern edge of the Lut block is considered as a volcanic arc caused by submergence of the crust of the New Tethys Sea. This volcanic belt is a great source of copper and molybdenum copper deposits. The lithofacies complex of Iran’s eastern mountains is the product of the opening of the basin between continental parts. This basin was accompanied by formation of oceanic crust, and its ophiolites have high potentials for chromite. Magnesite and asbestos ore mines are also among the characteristics of these ophiolites. Study of dispersion of mineral reserves in tectonic units and different lithofacies is considered as an appropriate guide for seeking mineral resources.

Observation of Oceanic Phenomena Using the Almaz-1 SAR Satellite Images

Majid Mokhtarani (Translator)

Volume 7, Issue 26 , August 1998, Pages 52-64

Abstract

One of the abilities of the S band (SAR sensor) in the “Almaz” Russian Satellite is observation of oceanic phenomena during its mission in 1991-1992. The SAR Almaz-1 Satellite showed us different oceanic phenomena such as surface and middle (lower) waves of the oceans, the floor of ... Read More

Volume 32 (2023)

Volume 31 (2022)

Volume 30 (2021)

Volume 29 (2020)

Volume 28 (2019)

Volume 27 (2018)

Volume 26 (2017)

Volume 25 (2016)

Volume 24 (2015)

Volume 23 (2014)

Volume 22 (2013)

Volume 21 (2012)

Volume 20 (2011)

Volume 19 (2010)

Volume 18 (2009)

Volume 17 (2008)

Volume 16 (2007)

Volume 15 (2006)

Volume 14 (2005)

Volume 13 (2004)

Volume 12 (2003)

Volume 11 (2002)

Volume 10 (2001)

Volume 9 (2000)

Volume 8 (1999)

Volume 7 (1998)

Volume 6 (1997)

Volume 5 (1996)

Volume 4 (1995)

Volume 3 (1994)

Volume 2 (1992-1993)

Volume 1 (1990-1992)

Volume & Issue: Volume 7, Issue 26, August 1998, Pages 1-64

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