Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | Springer Nature Link |
|---|---|
| Author | Farrokhnia, Alireza Pirasteh, Saied Pradhan, Biswajeet Pourkermani, Mohamad Arian, Mehrdad |
| Copyright Year | 2010 |
| Abstract | Mass movements or mass wasting is being considered as one of the severe forms of natural disasters. Iran is geographically located in the Alps–Himalaya seismicity belt. It has a high potential to mass wasting. This seismic phenomenon creates landslides and rock falls in the high mountains of Alborz and Zagros. These mass movements and various types of slides can be systematically assessed and mapped through traditional mapping frameworks using geo-information technologies. The geo-information-based technology offers the earth scientist to study and map various types of mass movement and stability of slopes. In this study, we used field data coupling with the tectonic-related factors to provide a solution for slope-related hazards. Firstly, various geological and geomorphological factors such as lineaments and faults, vegetation, lithology, slope, drainage, land use/land cover, seismicity and roads network were extracted and compiled using geo-information technology. This is because the factors mentioned above play important role in the instability of the region. Then, the study area was divided into four regions based on the rate of mass wasting and its degree of vulnerability. The results of this study showed that the erosion in Karaj formation is severe. Additionally, this research also reveals that the hydrothermal solutions caused by the erosional activities have influenced the glassy element of tuffs and subsequently changed into the clays. This change has caused the tuffs to be relatively unstable. Further, it is evident that the chemical and physical weathering has had a big impact on it whilst most of the mass wasting has occurred within the unstable tuffs of Karaj formation. Finally, the paper concluded that the recent construction of the new roads in the region has increased the potential danger for generating the mass wastes and thus makes the region more unstable.تعتبر تحركات الكتلة أو ضعف الكتلة واحدة من الأشكال الوخيمة للكوارث الطبيعية. تقع إيران فى الحزام الزلزالى لجبال الهيمالايا - الألب والذى يتميز بارتفاع قدرتها على إضعاف الكتلة. حدوث الزلازل تسبب إنزلاقات أرضية وتساقط الصخور فى جبال البرز وزاجروس المرتفعة. تحركات الكتلة والأنواع المختلفة من الإنزلاقات يمكن تقديرها ورسمها بشكل منتظم خلال إطارات التخريط التقليدية باستخدام تكنولوجيات المعلومات الجغرافية. تكنولوجيا المعلومات الجغرافية تتيح للعلماء دراسة ورسم الأنواع المختلفة لتحركات الكتلة واستقرار المنحدرات. استخدمنا فى هذه الدراسة البيانات الحقلية وعلاقتها بالعوامل التكتونية لتمدنا بحلول للمخاطر المرتبطة بالمنحدرات. فى البداية فإن مختلف العوامل الجيولوجية والجيومورفولوجية مثل الفوالق، والغطاء النباتي، وعلم الصخور والمنحدرات، والصرف، استخدام الأراضي/الغطاء الأرضي، والزلزالية، وشبكة الطرق تم استخراجها وتجميعها باستخدام تكنولوجيا المعلومات الجغرافية لأن هذه العوامل تلعب دورا هاما فى عدم استقرار المنطقة. بناءا على ذلك تم تقسيم المنطقة لأربعة أقاليم حسب درجة ضعف الصخور وقابليتها للانهيار. أوضحت نتائج هذه الدراسة التآكل الحاد لمتكون كرج. بالإضافة لأن البحث يبين أن المحاليل الحارة التى حدثت بأنشطة التآكل أثرت على العنصر الزجاجى فى الأحجار البركانية وتحولها إلى الطين. هذا التحول أدى لعدم ثبات الأحجار البركانية، شاهدا على أن التعرية الكيميائية والفيزيائية كان لها تأثير كبير عليها، بينما الجزء الغالب من ضعف الكتلة حدث فى الأحجار البركانية داخل متكون كرج. وفى النهاية نستنتج من هذه الدراسة أن الإنشاءات الحديثة للطرق الجديدة فى المنطقة زاد من الخطر المحتمل لتوليد ضعف الصخور، الأمر الذى يجعل المنطقة غير مستقرة أكثر. |
| Starting Page | 1337 |
| Ending Page | 1349 |
| Page Count | 13 |
| File Format | |
| ISSN | 18667511 |
| Journal | Arabian Journal of Geosciences |
| Volume Number | 4 |
| Issue Number | 7-8 |
| e-ISSN | 18667538 |
| Language | Arabic |
| Publisher | Springer-Verlag |
| Publisher Date | 2010-12-02 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Mass movement Natural disasters Alborz Mountains Lineaments Landslides Rock falls GIS Remote sensing Iran Earth Sciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Earth and Planetary Sciences Environmental Science |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|