Soha A . Mohamed | Alexandria University ,Egypt (original) (raw)
Papers by Soha A . Mohamed
Journal of African Earth Sciences
Water
Understanding the dynamics of floods in dry environments and predicting an accurate flood hazard ... more Understanding the dynamics of floods in dry environments and predicting an accurate flood hazard map considering multiple standards and conflicting objectives is of great political and planning importance in the Kingdom of Saudi Arabia’s vision for the year 2030, in order to reduce losses in lives, property, and infrastructure. The objectives of this study are (1) to develop a flood vulnerability map identifying flood-prone areas along the Al-Shamal train railway pathway; (2) to forecast the vulnerability of urban areas, agricultural land, and infrastructure to possible future floods hazard; and (3) to introduce strategic solutions and recommendations to mitigate and protect such areas from the negative impacts of floods. In order to achieve these objectives, multicriteria decision analysis based on geographic information systems (GIS-MCDA) is used to build a flood hazard map of the study area. The analytic hierarchy process (AHP) is applied to extract the weights of eight criteria ...
Journal of African Earth Sciences, 2019
Flash floods in Egypt are considered frequent meteorological natural hazards. Qena is one of the ... more Flash floods in Egypt are considered frequent meteorological natural hazards. Qena is one of the most Egyptian governorates prone to flash floods. Various flash floods events hit Qena from 1954 till 2016. Flash floods occurred in Qena on 28th October 2016 inundated houses and roads, generated losses in lives, damages to private and public property. The intensive rainfall coupled with the rapid urban expansion in Qena and along the Nile Valley could worsen the situation. Despite, the destructive impacts of the flash floods in Qena, flash floods can be used as a valuable source of fresh water as the study area is classified as an arid zone and characterized with the fresh-water shortage. Integration of remotely sensed data with the Analytical Hierarchy Process and Geographic Information Systems spatial modeling presented valuable analysis techniques in this study. The present study focused on mapping the spatial distribution of flash floods vulnerability in Qena's urban areas. Ten indicators were used to analyze the flood floods namely; rainfall, soil, geology, slope, elevation, flow direction, drainage network, land cover, total population, and population density. The results revealed that Qena, Qus, Naqadah, and Dishna urban districts are the most vulnerable to flash floods and located in the very high zone with 25.3%, 14.9%, 12.3%, and 9.8% respectively. The total population situated at very high and high vulnerability zone reached represents 7.66% and 43.36% of the total population. The obtained results considered crucial information for decision-makers for future effective flash floods hazards mitigation, assessment management, planning, and sustainable development.
The Qaroun Lake, Wadi El-Rayyan, and Wadi El-Hitan are some of the most promising ecotourism dest... more The Qaroun Lake, Wadi El-Rayyan, and Wadi El-Hitan are some of the most promising ecotourism destinations in Egypt due to their natural mineral resources , wildlife, and biodiversity in addition to their historic heritage that dates back to the age of The Pharos. These natural resources should be managed and maintained without affecting the needs of future generations. Land use/land cover change is the most important factor in causing biodiversity loss. Accordingly, the objectives of this study are to identify, quantify, and model future land cover changes using remote sensing and GIS techniques. To fulfill the objectives of the study, a hybrid image classification is employed using the combination of unsupervised and supervised classification methods to detect land cover types. Post-classification comparison is used to map changes in land cover between 2000 and 2017. Markov model is applied to analyze, predict, and simulate future land cover changes from 2017 to 2050. This is in order to safeguard against the adverse effects and negative consequences of land cover changes, preserve the natural resources, and consequently achieve goals of sustainable development. The outcome of this study can provide policy makers and urban planners with the required information regarding the status of the environment and subsequently reduce pressure on natural resources in order to facilitate conservation planning and sustainable development.
Ass. Univ. Bull. Environ. Res., 2018
Mapping land use/land cover (LULC) changes at regional scales is essential for a wide range of e... more Mapping land use/land cover (LULC) changes at regional scales is essential for a wide range
of environmental hazards and risk, including global warming, earthquakes, landslide, erosion,
flooding, etc. These rapid changes adversely affect the environment and have potential economic and
social impacts. Thus, detailed accurate information about changes is urgently needed for updating
LULC maps, to provide information for policymakers to support sustainable development, and the
management of natural resources. The purpose of this paper was to extract reliable land cover
information from two Landsat imageries with moderate resolution (Landsat 5 TM and Landsat 8
OLI) over a 15 years period (1999 to 2014) using post-classification change detection analysis.
Traditional post-classification change detection approach based on pixel-based classification.
However, in this paper, both of pixel based and segment-based classification approaches are
deployed and the appropriateness of the classifications to derive accurate land cover maps. Then,
Markov model is used to predict and simulate trends of LULC changes during the period of 1999 to
2014 and a future land cover map of the year 2050 are produced. The results showed that image
segmentations led to better classification accuracy (86.67% in 1999 and 94.09% in 2014
Ass. Univ. Bull. Environ. Res., 2018
Sea level rise (SLR) is closely linked to increasing global temperatures. Rising temperatures ar... more Sea level rise (SLR) is closely linked to increasing global temperatures. Rising temperatures
are warming ocean waters, which expand as the temperature increases. This thermal expansion was
the main driver of global sea level rise for 75 - 100 years after the start of the Industrial Revolution,
though its relative contribution has declined as the shrinking of land ice has accelerated. Alexandria
is vulnerable to sea level rise risks, especially with its current high-density coastal communities and
the rapidly increasing population rates. Most of the ‟s inhabitants are living in low-lying land and
some are even below sea level. Moreover, Alexandria has been identified as one of the
„Mediterranean vulnerable cites‟. This paper assessed the resilience of Alexandria to sea level rise
risk, focusing on hazard assessment (inundation) as one of the most significant physical impacts.
Resilience index to SLR for the ten-urban district in the study area is developed using vulnerable
built-up areas, vulnerable population and socioeconomic conditions (represented in unemployment
rate, annual population growth and Human Development Index (HDI). The results revealed that the
resilience index ranged from “0” for low resilience and “1” for high resilience. The calculated
resilience index indicated that urban districts in Alexandria had different levels of resilience to SLR
impacts. Sharq district had the highest resilience that may be attributed to the relatively high HDI,
availability of high levels of infrastructure and services in addition to the improved environmental
and demographic conditions.
Natural Hazards, 2019
Egypt sufers from freshwater crisis, and the shortage is predicted to become severe by 2025. Eg... more Egypt sufers from freshwater crisis, and the shortage is predicted to become severe by
2025. Egypt is exposed to fash foods, especially in Sinai governorate, causing rapid rises
of water in a short amount of time and can trigger other catastrophic hazards associated
with damage, danger to human life, properties and environment. Flash foods may be con-
sidered a source of water that can be explored to meet the water shortage problem. In this
study, a composite fash foods vulnerability index based on an integrated hydro-climatic
and physical vulnerability component was created. The composite index was based on eight
parameters including rainfall distribution, elevation and slope, fow direction, streams, geo-
morphological features, soil type and land cover. The composite index was ranked into
three categories: high, moderate and low. The index can help identify the weak and strong
points to support the decision-making process concerned with water management as an
essential prerequisite for Egypt sustainable development. The results revealed that the
urban, vegetation cover, loamy sand, sand dunes, the low elevation and the fat areas are the
most afected by the fash foods in EL-Arish City in Sinai governorate. 42% of Wadi El-
Arish had low vulnerability, 45% moderate vulnerability and 13% high vulnerability.
Tsunami extreme events present a highly significant hazard and considerable risk to the coastal c... more Tsunami extreme events present a highly significant hazard and considerable risk to the coastal communities. The continued occurrence of tsunami incidents , together with population growth, increases the risk in coastal communities. Two known catastrophic historic tsunamis in Alexandria occurred in the years 365 and 1303 AD, with reported wave heights of 1 m and 2.9 m, respectively. Approximately 5000 people lost their lives and 50,000 homes were destroyed in the city after the earthquake in 365. The 1303 tsunami destroyed the great lighthouse of Alexandria, one of the seven wonders of the ancient world. In order to avoid such events in the future, a detailed knowledge about the tsunami phenomenon and its potential risk is needed. In this paper, the vulnerability and risk to the city of Alex-andria will be examined by remote sensing and GIS techniques considering three scenarios. Methodology used depends on building a comprehensive GIS in addition to recent satellite images. After digitizing raster data, it was then stored into a vector format. A digital parcel map was created; attributes (like distance to shore line, elevation, land use/cover, and population) for each polygon were added. Using the Shuttle Radar Topography Mission images, a digital elevation model was created, to test all the tsunami scenarios (based on 5 m, 9 m, and 20 m wave's height). Finally, vulnerability analysis including physical as well as social and economic constraints was executed for the determination of the vulnerability level of elements. Results indicated that Alexandria city is highly vulnerable to tsunami hazard. Very high risk covers the biggest portion of the area in Alexandria (49.16% and 58.71%), followed by high risk (30% and 28.41%), medium risk (13.61% and 7.76%), and low and very low risk (20.82% and 12.88%).
المؤتمر الجغرافى الاول: الموارد المائية فى الوطن العربي بين المعوقات وآفاق التنمية, Dec 9, 2017
الطاقة الشمسية هى أحد أهم مكونات الطاقة النظيفة والمتجددة التى يمكن استخدامها فى عدة مجالات منها ... more الطاقة الشمسية هى أحد أهم مكونات الطاقة النظيفة والمتجددة التى يمكن استخدامها فى عدة مجالات منها تحلية المياه وفي ضوء التحديات المستقبلية التي تعاني منها الميزانية المائية المصرية نتيجة العجز فى الموارد المائية المتاحة نتيجة لمخاطر التغيير المناخي وما يتبعها من ارتفاع في درجات الحرارة وما يصاحبه من زيادة معدلات التبخر وانخفاض معدلات سقوط الأمطار بالتوازي مع النمو السكاني والتوسع الحضري والتطور الصناعي بالاضافة الى تهديد حصه مصر من مياه النيل بسبب إنشاء سد النهضة الإثيوبي، فقد أصبحنا الآن في مأزق لتحقيق الأمن المائي وما يترتب عليه من تأثيرات بالأنتاج الغذائي وبالتالى فى تحقيق التنمية المستدامة وإذا لم نبدأ من الآن في العمل على وضع استراتيجية متكاملة للإدارة الرشيدة للموارد المائية في مصر. لذا كانت هناك ضرورة لمحاولة تعظيم الموارد المائية المتاحة المحدودة وكذلك البحث عن إيجاد مصادر مائية جديدة غير تقليدية. الدراسة الحالية تهدف الي استخدام وتطبيق نظم المعلومات الجغرافية كنظام مكاني متعدد المعايير لتحديد أنسب المواقع المكانية لتجميع الطاقة الشمسية في مصر عتماداً على مجموعة من المعايير لتحديد أفضل الاماكن لانشاء محطات تحلية مياه البحر العاملة بالطاقة الشمسية. قامت الدراسة بتحديد المعايير المطلوبة طبقا للمواصفات العالمية ثم دمج هذه المعايير في نظام معلومات جغرافي متكامل بهدف الحصول علي نموذج الملائمة المكانية المطلوب.
The 17th Arab International Conference of Materials Science , Dec 18, 2017
Study aims to analyze flash floods in El-Arish City using both of GIS and remotely sensed data so... more Study aims to analyze flash floods in El-Arish City using both of GIS and remotely sensed data so the damages and losses can be avoided, to reduce flood impact on the developed areas in EL-Arish. Recommendations for successful flood management strategies are provided as an attempt to control and harvest flood water.
17th Arab International Conference Materials for Novel Applications (18-20 Dec 2017), 2017
Flash floods are the most dangerous kind of floods causing rapid rises of water in a short amount... more Flash floods are the most dangerous kind of floods causing rapid rises of water in a short amount of time and associated with damage, danger and other hazards associated to it to human life, properties, and environment. So, this study aims to analyze flash floods in El-Arish City using both of GIS and remotely sensed data so the damages and losses can be avoided, to reduce flood impact on the developed areas in EL-Arish
Teaching Documents by Soha A . Mohamed
يتم القاء الضوء عن اهم تعاريف نظم المعلومات الجغرافية وكذلك مكوناته وعناصره الاساسية الاسئلة الخم... more يتم القاء الضوء عن اهم تعاريف نظم المعلومات الجغرافية وكذلك مكوناته وعناصره الاساسية الاسئلة الخمسة التلى يجيب عنها مع بعض الامثلة واخيراً تطبيقات واستخدامات نظم المعلومات الجغرافية
يتم القاء الضوء عن اهم برامج نظم المعلومات الجغرافية ومنها ArcGIS - QGIS والفرق الاساسي بينهم وتا... more يتم القاء الضوء عن اهم برامج نظم المعلومات الجغرافية ومنها ArcGIS - QGIS والفرق الاساسي بينهم وتاريخ ونشأة برنامج ARCGIS ومكوناته الاساسية
البيانات الوصفية في نظم المعلومات الجغرافية
This presentation explains in extreme details select by attribute in ArcGIS. Mathematical operato... more This presentation explains in extreme details select by attribute in ArcGIS. Mathematical operators, logic operators and other operators are presented.
This demonstration explains in details difference between join and relates in ArcGIS. Also, steps... more This demonstration explains in details difference between join and relates in ArcGIS. Also, steps for successful join and relates are presented.
Drafts by Soha A . Mohamed
Journal of African Earth Sciences
Water
Understanding the dynamics of floods in dry environments and predicting an accurate flood hazard ... more Understanding the dynamics of floods in dry environments and predicting an accurate flood hazard map considering multiple standards and conflicting objectives is of great political and planning importance in the Kingdom of Saudi Arabia’s vision for the year 2030, in order to reduce losses in lives, property, and infrastructure. The objectives of this study are (1) to develop a flood vulnerability map identifying flood-prone areas along the Al-Shamal train railway pathway; (2) to forecast the vulnerability of urban areas, agricultural land, and infrastructure to possible future floods hazard; and (3) to introduce strategic solutions and recommendations to mitigate and protect such areas from the negative impacts of floods. In order to achieve these objectives, multicriteria decision analysis based on geographic information systems (GIS-MCDA) is used to build a flood hazard map of the study area. The analytic hierarchy process (AHP) is applied to extract the weights of eight criteria ...
Journal of African Earth Sciences, 2019
Flash floods in Egypt are considered frequent meteorological natural hazards. Qena is one of the ... more Flash floods in Egypt are considered frequent meteorological natural hazards. Qena is one of the most Egyptian governorates prone to flash floods. Various flash floods events hit Qena from 1954 till 2016. Flash floods occurred in Qena on 28th October 2016 inundated houses and roads, generated losses in lives, damages to private and public property. The intensive rainfall coupled with the rapid urban expansion in Qena and along the Nile Valley could worsen the situation. Despite, the destructive impacts of the flash floods in Qena, flash floods can be used as a valuable source of fresh water as the study area is classified as an arid zone and characterized with the fresh-water shortage. Integration of remotely sensed data with the Analytical Hierarchy Process and Geographic Information Systems spatial modeling presented valuable analysis techniques in this study. The present study focused on mapping the spatial distribution of flash floods vulnerability in Qena's urban areas. Ten indicators were used to analyze the flood floods namely; rainfall, soil, geology, slope, elevation, flow direction, drainage network, land cover, total population, and population density. The results revealed that Qena, Qus, Naqadah, and Dishna urban districts are the most vulnerable to flash floods and located in the very high zone with 25.3%, 14.9%, 12.3%, and 9.8% respectively. The total population situated at very high and high vulnerability zone reached represents 7.66% and 43.36% of the total population. The obtained results considered crucial information for decision-makers for future effective flash floods hazards mitigation, assessment management, planning, and sustainable development.
The Qaroun Lake, Wadi El-Rayyan, and Wadi El-Hitan are some of the most promising ecotourism dest... more The Qaroun Lake, Wadi El-Rayyan, and Wadi El-Hitan are some of the most promising ecotourism destinations in Egypt due to their natural mineral resources , wildlife, and biodiversity in addition to their historic heritage that dates back to the age of The Pharos. These natural resources should be managed and maintained without affecting the needs of future generations. Land use/land cover change is the most important factor in causing biodiversity loss. Accordingly, the objectives of this study are to identify, quantify, and model future land cover changes using remote sensing and GIS techniques. To fulfill the objectives of the study, a hybrid image classification is employed using the combination of unsupervised and supervised classification methods to detect land cover types. Post-classification comparison is used to map changes in land cover between 2000 and 2017. Markov model is applied to analyze, predict, and simulate future land cover changes from 2017 to 2050. This is in order to safeguard against the adverse effects and negative consequences of land cover changes, preserve the natural resources, and consequently achieve goals of sustainable development. The outcome of this study can provide policy makers and urban planners with the required information regarding the status of the environment and subsequently reduce pressure on natural resources in order to facilitate conservation planning and sustainable development.
Ass. Univ. Bull. Environ. Res., 2018
Mapping land use/land cover (LULC) changes at regional scales is essential for a wide range of e... more Mapping land use/land cover (LULC) changes at regional scales is essential for a wide range
of environmental hazards and risk, including global warming, earthquakes, landslide, erosion,
flooding, etc. These rapid changes adversely affect the environment and have potential economic and
social impacts. Thus, detailed accurate information about changes is urgently needed for updating
LULC maps, to provide information for policymakers to support sustainable development, and the
management of natural resources. The purpose of this paper was to extract reliable land cover
information from two Landsat imageries with moderate resolution (Landsat 5 TM and Landsat 8
OLI) over a 15 years period (1999 to 2014) using post-classification change detection analysis.
Traditional post-classification change detection approach based on pixel-based classification.
However, in this paper, both of pixel based and segment-based classification approaches are
deployed and the appropriateness of the classifications to derive accurate land cover maps. Then,
Markov model is used to predict and simulate trends of LULC changes during the period of 1999 to
2014 and a future land cover map of the year 2050 are produced. The results showed that image
segmentations led to better classification accuracy (86.67% in 1999 and 94.09% in 2014
Ass. Univ. Bull. Environ. Res., 2018
Sea level rise (SLR) is closely linked to increasing global temperatures. Rising temperatures ar... more Sea level rise (SLR) is closely linked to increasing global temperatures. Rising temperatures
are warming ocean waters, which expand as the temperature increases. This thermal expansion was
the main driver of global sea level rise for 75 - 100 years after the start of the Industrial Revolution,
though its relative contribution has declined as the shrinking of land ice has accelerated. Alexandria
is vulnerable to sea level rise risks, especially with its current high-density coastal communities and
the rapidly increasing population rates. Most of the ‟s inhabitants are living in low-lying land and
some are even below sea level. Moreover, Alexandria has been identified as one of the
„Mediterranean vulnerable cites‟. This paper assessed the resilience of Alexandria to sea level rise
risk, focusing on hazard assessment (inundation) as one of the most significant physical impacts.
Resilience index to SLR for the ten-urban district in the study area is developed using vulnerable
built-up areas, vulnerable population and socioeconomic conditions (represented in unemployment
rate, annual population growth and Human Development Index (HDI). The results revealed that the
resilience index ranged from “0” for low resilience and “1” for high resilience. The calculated
resilience index indicated that urban districts in Alexandria had different levels of resilience to SLR
impacts. Sharq district had the highest resilience that may be attributed to the relatively high HDI,
availability of high levels of infrastructure and services in addition to the improved environmental
and demographic conditions.
Natural Hazards, 2019
Egypt sufers from freshwater crisis, and the shortage is predicted to become severe by 2025. Eg... more Egypt sufers from freshwater crisis, and the shortage is predicted to become severe by
2025. Egypt is exposed to fash foods, especially in Sinai governorate, causing rapid rises
of water in a short amount of time and can trigger other catastrophic hazards associated
with damage, danger to human life, properties and environment. Flash foods may be con-
sidered a source of water that can be explored to meet the water shortage problem. In this
study, a composite fash foods vulnerability index based on an integrated hydro-climatic
and physical vulnerability component was created. The composite index was based on eight
parameters including rainfall distribution, elevation and slope, fow direction, streams, geo-
morphological features, soil type and land cover. The composite index was ranked into
three categories: high, moderate and low. The index can help identify the weak and strong
points to support the decision-making process concerned with water management as an
essential prerequisite for Egypt sustainable development. The results revealed that the
urban, vegetation cover, loamy sand, sand dunes, the low elevation and the fat areas are the
most afected by the fash foods in EL-Arish City in Sinai governorate. 42% of Wadi El-
Arish had low vulnerability, 45% moderate vulnerability and 13% high vulnerability.
Tsunami extreme events present a highly significant hazard and considerable risk to the coastal c... more Tsunami extreme events present a highly significant hazard and considerable risk to the coastal communities. The continued occurrence of tsunami incidents , together with population growth, increases the risk in coastal communities. Two known catastrophic historic tsunamis in Alexandria occurred in the years 365 and 1303 AD, with reported wave heights of 1 m and 2.9 m, respectively. Approximately 5000 people lost their lives and 50,000 homes were destroyed in the city after the earthquake in 365. The 1303 tsunami destroyed the great lighthouse of Alexandria, one of the seven wonders of the ancient world. In order to avoid such events in the future, a detailed knowledge about the tsunami phenomenon and its potential risk is needed. In this paper, the vulnerability and risk to the city of Alex-andria will be examined by remote sensing and GIS techniques considering three scenarios. Methodology used depends on building a comprehensive GIS in addition to recent satellite images. After digitizing raster data, it was then stored into a vector format. A digital parcel map was created; attributes (like distance to shore line, elevation, land use/cover, and population) for each polygon were added. Using the Shuttle Radar Topography Mission images, a digital elevation model was created, to test all the tsunami scenarios (based on 5 m, 9 m, and 20 m wave's height). Finally, vulnerability analysis including physical as well as social and economic constraints was executed for the determination of the vulnerability level of elements. Results indicated that Alexandria city is highly vulnerable to tsunami hazard. Very high risk covers the biggest portion of the area in Alexandria (49.16% and 58.71%), followed by high risk (30% and 28.41%), medium risk (13.61% and 7.76%), and low and very low risk (20.82% and 12.88%).
المؤتمر الجغرافى الاول: الموارد المائية فى الوطن العربي بين المعوقات وآفاق التنمية, Dec 9, 2017
الطاقة الشمسية هى أحد أهم مكونات الطاقة النظيفة والمتجددة التى يمكن استخدامها فى عدة مجالات منها ... more الطاقة الشمسية هى أحد أهم مكونات الطاقة النظيفة والمتجددة التى يمكن استخدامها فى عدة مجالات منها تحلية المياه وفي ضوء التحديات المستقبلية التي تعاني منها الميزانية المائية المصرية نتيجة العجز فى الموارد المائية المتاحة نتيجة لمخاطر التغيير المناخي وما يتبعها من ارتفاع في درجات الحرارة وما يصاحبه من زيادة معدلات التبخر وانخفاض معدلات سقوط الأمطار بالتوازي مع النمو السكاني والتوسع الحضري والتطور الصناعي بالاضافة الى تهديد حصه مصر من مياه النيل بسبب إنشاء سد النهضة الإثيوبي، فقد أصبحنا الآن في مأزق لتحقيق الأمن المائي وما يترتب عليه من تأثيرات بالأنتاج الغذائي وبالتالى فى تحقيق التنمية المستدامة وإذا لم نبدأ من الآن في العمل على وضع استراتيجية متكاملة للإدارة الرشيدة للموارد المائية في مصر. لذا كانت هناك ضرورة لمحاولة تعظيم الموارد المائية المتاحة المحدودة وكذلك البحث عن إيجاد مصادر مائية جديدة غير تقليدية. الدراسة الحالية تهدف الي استخدام وتطبيق نظم المعلومات الجغرافية كنظام مكاني متعدد المعايير لتحديد أنسب المواقع المكانية لتجميع الطاقة الشمسية في مصر عتماداً على مجموعة من المعايير لتحديد أفضل الاماكن لانشاء محطات تحلية مياه البحر العاملة بالطاقة الشمسية. قامت الدراسة بتحديد المعايير المطلوبة طبقا للمواصفات العالمية ثم دمج هذه المعايير في نظام معلومات جغرافي متكامل بهدف الحصول علي نموذج الملائمة المكانية المطلوب.
The 17th Arab International Conference of Materials Science , Dec 18, 2017
Study aims to analyze flash floods in El-Arish City using both of GIS and remotely sensed data so... more Study aims to analyze flash floods in El-Arish City using both of GIS and remotely sensed data so the damages and losses can be avoided, to reduce flood impact on the developed areas in EL-Arish. Recommendations for successful flood management strategies are provided as an attempt to control and harvest flood water.
17th Arab International Conference Materials for Novel Applications (18-20 Dec 2017), 2017
Flash floods are the most dangerous kind of floods causing rapid rises of water in a short amount... more Flash floods are the most dangerous kind of floods causing rapid rises of water in a short amount of time and associated with damage, danger and other hazards associated to it to human life, properties, and environment. So, this study aims to analyze flash floods in El-Arish City using both of GIS and remotely sensed data so the damages and losses can be avoided, to reduce flood impact on the developed areas in EL-Arish
يتم القاء الضوء عن اهم تعاريف نظم المعلومات الجغرافية وكذلك مكوناته وعناصره الاساسية الاسئلة الخم... more يتم القاء الضوء عن اهم تعاريف نظم المعلومات الجغرافية وكذلك مكوناته وعناصره الاساسية الاسئلة الخمسة التلى يجيب عنها مع بعض الامثلة واخيراً تطبيقات واستخدامات نظم المعلومات الجغرافية
يتم القاء الضوء عن اهم برامج نظم المعلومات الجغرافية ومنها ArcGIS - QGIS والفرق الاساسي بينهم وتا... more يتم القاء الضوء عن اهم برامج نظم المعلومات الجغرافية ومنها ArcGIS - QGIS والفرق الاساسي بينهم وتاريخ ونشأة برنامج ARCGIS ومكوناته الاساسية
البيانات الوصفية في نظم المعلومات الجغرافية
This presentation explains in extreme details select by attribute in ArcGIS. Mathematical operato... more This presentation explains in extreme details select by attribute in ArcGIS. Mathematical operators, logic operators and other operators are presented.
This demonstration explains in details difference between join and relates in ArcGIS. Also, steps... more This demonstration explains in details difference between join and relates in ArcGIS. Also, steps for successful join and relates are presented.