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A Study on Sediment Settling Pattern in the Reservoir of Shahid Rajaie Dam by Using Observed Data & Empirical Methods
Archive of SID A Study on Sediment Settling Pattern in the Reservoir of Shahid Rajaie Dam by Using Observed Data & Empirical Methods Zohreh Zargaran M.Sc. Student of Water Resources Engineering and Management, Islamic Azad University, Science & Research Branch, Tehran, Iran [email protected] Farhang Behrangi Ph.D. Candidate in Hydraulic Structures, School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran [email protected] Leila Amiri Ph.D. Candidate in Environmental Engineering, Department of Civil and Environmental Engineering, K.N.Toosi University of Technology, Tehran, Iran [email protected] Abstract In addition to reducing the useful storage capacity, sedimentation in reservoirs makes changes to a river basin and reservoir morphology. Depending on the amount of incoming sediment, trap coefficient and the manner of settling, the useful life of the reservoirs varies. With the movement of sediments towards the body of the dam and the obstruction of the discharging gates and turbine valves, the dam operation will practically face problems. Therefore in sedimentation studies, besides the incoming sediment, its movement rate towards the body of the dam, and the sediment deposit procedure must be taken into account. This paper presents a study on Shahid Rajaee reservoir in Iran in which first, by using AutoCAD Civil 3D 2011 software, the geometrical information of the reservoir such as its volume, area and longitudinal profile are obtained from hydrographic maps. Then with observed data and empirical methods, the amounts of sediment inflow as well as its settling pattern in the reservoir are studied and the future of sedimentation procedure in this reservoir is anticipated. -
Possibilities of Restoring the Iraqi Marshes Known As the Garden of Eden
Water and Climate Change in the MENA-Region Adaptation, Mitigation,and Best Practices International Conference April 28-29, 2011 in Berlin, Germany POSSIBILITIES OF RESTORING THE IRAQI MARSHES KNOWN AS THE GARDEN OF EDEN N. Al-Ansari and S. Knutsson Dept. Civil, Mining and Environmental Engineering, Lulea University, Sweden Abstract The Iraqi marsh lands, which are known as the Garden of Eden, cover an area about 15000- 20000 sq. km in the lower part of the Mesopotamian basin where the Tigris and Euphrates Rivers flow. The marshes lie on a gently sloping plan which causes the two rivers to meander and split in branches forming the marshes and lakes. The marshes had developed after series of transgression and regression of the Gulf sea water. The marshes lie on the thick fluvial sediments carried by the rivers in the area. The area had played a prominent part in the history of man kind and was inhabited since the dawn of civilization by the Summarian more than 6000 BP. The area was considered among the largest wetlands in the world and the greatest in west Asia where it supports a diverse range of flora and fauna and human population of more than 500000 persons and is a major stopping point for migratory birds. The area was inhabited since the dawn of civilization by the Sumerians about 6000 years BP. It had been estimated that 60% of the fish consumed in Iraq comes from the marshes. In addition oil reserves had been discovered in and near the marshlands. The climate of the area is considered continental to subtropical. -
Iranian Cancer Researcher Detained Despite Valid Visa
Art & Culture July 13, 2017 3 This Day in History Iranian Cancer Researcher (July 13) Today is Thursday; 22nd of the Iranian month of Tir 1396 solar hijri; corresponding to 18th of the Islamic month of Shawwal 1438 lunar hijri; and July 13, 2017, of the Christian Gregorian Calendar. Detained Despite Valid Visa 1069 lunar years ago, on this day in 368 AH, the pleasure-seeking Ezz od- Dowla Daylami, son of Moiz od-Dowla the Buwaihid conqueror of Baghdad, to return to Iran around 9 p.m., was killed in battle with his cousin, Adhud od-Dowla, the son of Rukn od- Dowla, near the River Tigris after rebelling against the central authority of the despite having a valid work visa then Shiraz-based Buwaihid confederacy. Adhud od-Dowla, a few years later to join the Boston Children’s after the passing away of his father, became the senior-most Buwaihid Amir of Iraq and Fars, at a time when Baghdad was wracked by violence and instability. Hospital, according to the Boston He restored peace and patronized scholars such as the celebrated Shaikh Mufid, Globe. besides renovating the holy shrines in Najaf and Karbala. An observatory was It’s not clear as why Dehnavi built by him in Isfahan, and the dam known till this day as “Band-e Amir” was built on his orders between Shiraz and Istakhr. He dug the Haffar Canal joining and his family are being detained the Karun River to the Arvand Roud at the confluence of the Rivers Tigris and — but they’ll likely be deported Euphrates. -
Restoring the Garden of Eden, Iraq -.: Scientific Press International Limited
Journal of Earth Sciences and Geotechnical Engineering, vol. 2, no. 1, 2012, 53-88 ISSN: 1792-9040(print), 1792-9660 (online) International Scientific Press, 2012 Restoring the Garden of Eden, Iraq Nadhir Al-Ansari1, Sven Knutsson2 and Ammar A. Ali3 Abstract The Iraqi marsh lands, which are known as the Garden of Eden, cover an area about 15-20 103 km2 in the lower part of the Mesopotamian basin. The area had played a prominent part in the history of mankind and was inhabited since the dawn of civilization. The Iraqi government started to drain the marshes for political and military reasons and at 2000 less than 10% of the marshes remained. After 2003, the process of restoration and rehabilitation of Iraqi marshes started. There are number of difficulties encountered in the process. In this research we would like to explore the possibilities of restoring the Iraqi marshes. It is believed that 70- 75% of the original areas of the marshes can be restored. This implies that 13km3 water should be available to achieve this goal keeping the water quality as it is. To evaluate the water quality in the marshes, 154 samples were collected at 48 stations during summer, spring and winter. All the results indicate that the water quality was bad. To improve the water quality, then 18.86 km3 of water is required. This requires plenty of efforts and international cooperation to overcome the existing obstacles. 1 Lulea University of Technology, e-mail: [email protected] 2 Lulea University of Technology, e-mail: [email protected] 3 Lulea University of Technology, e-mail: [email protected] Article Info: Revised : February 24, 2012 . -
Characteristics of Direct Human Impacts on the Rivers Karun and Dez in Lowland South-West Iran and Their Interactions with Earth Surface Movements
© 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial- NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ Characteristics of direct human impacts on the rivers Karun and Dez in lowland south-west Iran and their interactions with earth surface movements Kevin P. Woodbridge, Daniel R. Parsons, Vanessa M. A. Heyvaert, Jan Walstra, Lynne E. Frostick Abstract Two of the primary external factors influencing the variability of major river systems, over river reach scales, are human activities and tectonics. Based on the rivers Karun and Dez in south-west Iran, this paper presents an analysis of the geomorphological responses of these major rivers to ancient human modifications and tectonics. Direct human modifications can be distinguished by both modern constructions and ancient remnants of former constructions that can leave a subtle legacy in a suite of river characteristics. For example, the ruins of major dams are characterised by a legacy of channel widening to 100's up to c. 1000 m within upstream zones that can stretch to channel distances of many kilometres upstream of former dam sites, whilst the legacy of major, ancient, anthropogenic river channel straightening can also be distinguished by very low channel sinuosities over long lengths of the river course. Tectonic movements in the region are mainly associated with young and emerging folds with NW–SE and N–S trends and with a long structural lineament oriented E–W. These earth surface movements can be shown to interact with both modern and ancient human impacts over similar timescales, with the types of modification and earth surface motion being distinguishable. -
Mechanical and Hydraulic Behavior of Cut Off-Core Connecting Systems in Earth Dams
Mechanical and Hydraulic Behavior of Cut off-Core Connecting Systems in Earth Dams Zakaria Zoorasna Graduate Student Faculty of Engineering, Tarbiat Moallem University, Tehran, Iran [email protected] Amir Hamidi Assistant Professor Faculty of Engineering, Tarbiat Moallem University, Tehran, Iran [email protected] Ali Ghanbari Assistant Professor Faculty of Engineering, Tarbiat Moallem University, Tehran, Iran [email protected] ABSTRACT Seepage through foundation of earth dams can be controlled using concrete cut off walls. The increase in hydraulic gradients in connecting zone of cut off wall and core usually results in erosion and water leakage. Also the difference between stiffness of clayey core and concrete cut off wall results in stress concentration and increase in deformations in connecting zone. As a result, connecting systems are usually used between cut off wall and core to reduce the hydraulic gradients and stress concentration. In the present research, Karkheh storage dam in Iran is considered as the case study. Seepage and stress-strain analysis are conducted to investigate the effect of different connection systems on the maximum gradient and stress concentration in connecting zone. In this regard, the most appropriate systems with the most effective characteristics and suitability in construction are recommended. KEYWORDS: Cut off wall; connecting system, hydraulic gradient, stress-strain distribution, Karkheh storage dam. INTRODUCTION Seepage can be controlled in foundation of earth dams using different methods. To select an under seepage control method for a particular dam and foundation, the relative merits and efficiency of different methods should be evaluated (U.S. Army Corps of Engineers, 2004). Concrete cut off walls are one of main methods of seepage control and are divided to the following categories according to the material type used in construction: • Slurry trench cut off wall Vol. -
تحقیقات منابع آب ايران Volume 16, No
سال شانزدهم، شماره 0، بهار 0366 تحقیقات منابع آب ايران Volume 16, No. 1, Spring 2020 (IR-WRR) Iran-Water Resources Research 261-274 پتانسیليابی منابع آب برای تخصیص به آبزیپروری از The Potential for Allocating Water Resources to Aquaculture from an بودجه آبی به حساب نیامده Unaccounted Water Budget 0 *0 علیرضا شکوهی و امید بهمنی A.R. Shokoohi * and O. Bahmani 22 چکیده Abstract این تحقیق با تمرکز بر مسأله صرفهجویی در استفاده از منابع آب شیرین در مناطق This research, based on the belief that modern aquaculture گرم و خشک با معرفی الگوریتمی ساده به پتانسیلیابی آبهای سطحی و زیرزمینی technologies in the form of intensive and super-intensive aquaculture methods can use water resources of low quality for غیر قابل تخصیص به بخشهای کشاورزی، شرب و صنعت پرداخته و با این پیش utilizing in other sectors, aims to focus on saving freshwater فرض که به کمک روشهای نوین آبزیپروری میتوان از این آبهای به ظاهر resources in arid and semi-arid areas. By introducing an نامرغوب استفاده کرد، مناطق مستعد از نظر تأمین آب برای آبزیپروری را شناسایی intelligent algorithm, this study tries to find the potential of مینماید. منطقه مورد مطالعه دراین پژوهش حوضههای آبریز 5 گانه واقع در مرزهای .non-allocated water for agriculture, industry, and drinking The study area includes Karun, Dez, Karkheh, Maroon-Jarahi سیاسی استان خوزستان شامل کارون، دز، کرخه، مارون- جراحی و زهره است که and Hendijan basins/plains located in Khuzestan province, for به کمک الگوریتم توسعه داده شده مناطق مستعد برای آبزیپروری در آنها تعیین و which the areas suitable for allocating water to aquaculture به صورت نقشه در محیط GIS ارائه گردید. -
Khuzestan: Spring Sanctuary
Tomorrow is ours Today’s Weather Call to prayer time in Isfahan Isfahan Tehran Morning call to prayer : ° ° 05:11:22 21 c 32 c Noon call to prayer : 13:04:30 Ahvaz Evening call to prayer: ° 19:51:09 28 c ° 45 c Qibla Direction Rasht 22 ° c 33 ° c 13 ° c 31 ° c NasPro-environment e NewspaperFarda Monday|28August 2017 |No.5482 naslfarda naslefardanews 30007232 WWW.NASLEFARDA.NET Page:23 Tehran City Council Khuzestan: Spring Sanctuary Names Caretaker huzestan province enjoys very The mausoleum of Prophet Daniel Soleiman.The natural beauties of Mayor Kpleasant climatic conditions (PBUH) is also located in Shoush Khuzestan province are unique. The City Council of Tehran during the Iranian New Year and attracts many tourists every Shadegan lagoon, which is on Sunday picked a caretaker holidays (starting (March 21). year. Prophet Daniel (PBUH) was considered the biggest in Iran, and to perform mayoral duties at Known as Iran’s spring sanctuary, taken to Mesopotamia and then Hawr Marshes in Dasht-e Azadegan the Municipality of Tehran the province is visited by a large to Shoush about seven centuries are other scenic places of Khuzestan. until the credentials of the number of vacationers every year. before Prophet Jesus (PBUH) along Spectacular Dams elected mayor, Mohammad Ali Travelers to Khuzestan province with Jews by Babylonian kings. Khuzestan is home to spectacular Najafi, will be endorsed by the visit ancient relics, former He was a Jewish prophet and met dams and the biggest rivers of Iran administrative officials. waterfronts and natural sites like with Nebuchadnezzar, the king of such as Dez, Maroun, Zohreh, and ICT min., Zarif team lagoons and rivers as well as sacred Babylon. -
Meteorological Drought Monitoring Using the Multivariate Index of SPEI (Case Study: Karun Basin)
AUT Journal of Civil Engineering AUT J. Civil Eng., 3(1) (2019) 85-92 DOI: 10.22060/ajce.2018.14740.5494 Meteorological Drought Monitoring Using the Multivariate Index of SPEI (Case Study: Karun Basin) M. Saeidipour1, F. Radmanesh1*, S. Eslamian2 1 Department of Water Engineering, Shahid Chamran University, Ahvaz, Iran 2 Department of Water Engineering, Isfahan University of Technology (IUT), Iran ABSTRACT: Considering the importance of drought in water resources management, the present study Review History: was conducted with the aim of drought monitoring using drought index SPEI due to its multi-scale Received: 21 July 2018 nature and the ability to analyze at different time scales in selected meteorological stations in the Karun Revised: 21 August 2018 drainage basin. Another purpose of this research is to regionalize the SPEI index using cluster analysis Accepted: 6 October 2018 method in order to homogenize the hydrologic basin. In this regard, 18 stations were selected based Available Online: 20 October 2018 on the data homogeneity test and the determination of the length of the common statistical period. The SPEI drought index values were plotted in the form of sequencing graphs and their relationship with the Keywords: correlation analysis was tested. The results showed that there is a positive and significant correlation of Evapotranspiration this index for all stations (0.5 to 0.95). Also, the frequency of dry and wet periods decreases by increasing Dry and Wet Periods the time scale, but their continuity increases. With the regionalization of the basin stations by cluster SPEI Index analysis, the stations were classified into 7 classes. -
An Investigation the Results of ME-MS81D Tests on Clay Lenses of Asmari Formation
The 1 st International Applied Geological Congress, Department of Geology, Islamic Azad University - Mashad Branch, Iran, 26-28 April 2010 An Investigation the Results of ME-MS81D Tests on Clay Lenses of Asmari Formation M. Nekouyanfar1 ; M.Azarpey2 ; A. Makvandi3 1 KWPA, Basic Studies Division, Email: [email protected] 2 Department of geology - Azad University of North Tehran [email protected] 3 KWPA, Email: [email protected] Abstract One of the most common Analysis Methods of Major and Minor Elements in Rock and Sediment Samples is x-ray Fluorescence (XRF).The Most Important Limitation of This Method Is High Detection Limit In Normal Condition Is about 100 PPM. To Solve This Problem the More Developed Techniques with Lower Detection Limit Should Be Used. We Can Point To ICP-MS And ICP-AES Methods As Some Examples. In Order To Analyze Elements in Clay Lenses of ASMARI Formation Located In the Right Side Base IN SHAHID ABBASPOUR Dam Sampling Was Performed and This Analysis By ALSCHEMEX Laboratory Group Was Send To Canada. In The Used Analysis Method That Is A Combination Method Called ME-MS81D For The First Time 38 Trace Elements Using The ICP-MS And Also 14 Major and Minor Elements As Oxide Using The ICP-AES Analyzed In The Range Of Study. Finally The Results Of These Experiments To Sedimentary Tracing Operations Of SABZAB Spring Located In the Right Side Base Of The Mentioned Dam Were Used And Also The Were Compared With Results Of XRD Experiments By Khuzestan Water & Power Authority And Hydraulic relationship Of Spring With The Dam Reservoir Was Investigated. -
The Karun River and the Commercial Geography of South-West Persia Author(S): G
The Karun River and the Commercial Geography of South-West Persia Author(s): G. Curzon Source: Proceedings of the Royal Geographical Society and Monthly Record of Geography, New Monthly Series, Vol. 12, No. 9 (Sep., 1890), pp. 509-532 Published by: Wiley on behalf of The Royal Geographical Society (with the Institute of British Geographers) Stable URL: http://www.jstor.org/stable/1801018 . Accessed: 13/06/2014 15:32 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. The Royal Geographical Society (with the Institute of British Geographers) and Wiley are collaborating with JSTOR to digitize, preserve and extend access to Proceedings of the Royal Geographical Society and Monthly Record of Geography. http://www.jstor.org This content downloaded from 195.34.79.253 on Fri, 13 Jun 2014 15:32:01 PM All use subject to JSTOR Terms and Conditions PEOCEEDINGS OP THE ROYAL GEOGRAPHICAL SOCIETY AND MONTHLY REC0ED OF GEOGRAPHY. The Karun Biver and the Commercial Geography of South-ivest Persia. By the Hon. G. Curzon, m.p. (Read at the Evening Meeting,May 12th,1890.) Map, p. 576. The first duty that a traveiler owes?the last, too often, that he thinks of paying?is a tribute of acknowledgment to those who have preceded him, and have both assisted and lightened his labours by their own. -
Investigating Fold-River Interactions for Major Rivers Using a Scheme of Remotely Sensed Characteristics of River and Fold Geomorphology
remote sensing Article Investigating Fold-River Interactions for Major Rivers Using a Scheme of Remotely Sensed Characteristics of River and Fold Geomorphology Kevin P. Woodbridge 1, Saied Pirasteh 2,* and Daniel R. Parsons 1 1 Energy and Environment Institute, Faculty of Science and Engineering, University of Hull, Cottingham Road, Hull HU6 7RX, UK 2 Department of Surveying and Geoinformatics, Faculty of Geosciences and Environmental Engineering (FGEE), Southwest Jiaotong University, Chengdu 611756, China * Correspondence: [email protected]; Tel.: +86-1318-3819-193 Received: 10 July 2019; Accepted: 24 August 2019; Published: 29 August 2019 Abstract: There are frequently interactions between active folds and major rivers (mean annual water 3 1 discharges > 70 m s− ). The major river may incise across the fold, to produce a water gap across the fold, or a bevelling (or lateral planation) of the top of the fold. Alternatively, the major river may be defeated to produce a diversion of the river around the fold, with wind gaps forming across the fold in some cases, or ponding of the river behind the fold. Why a river incises or diverts is often unclear, though influential characteristics and processes have been identified. A new scheme for investigating fold-river interactions has been devised, involving a short description of the major river, climate, and structural geology, and 13 characteristics of river and fold geomorphology: (1) Channel width at location of fold axis, w, (2) Channel-belt width at location of fold axis, cbw, (3)