IOP Conference Series: Earth and Environmental Science, 2019
This research focuses on the granulometric analysis of coastal sediments zone in Lampuuk-Lhoknga ... more This research focuses on the granulometric analysis of coastal sediments zone in Lampuuk-Lhoknga Beach, Aceh Province. A total of 11 stations along Lampuuk-Lhoknga Beach located in swash zone are determined as locations for data collection. The sample sediment was collected in November 2018. The selected station was divided into two zones namely the upper swash zone (USZ) and lower swash zone (LSZ). The sampling technique was carried out by using a vertical coring method in order to get a sediment layer with a thickness of 5 cm from the surface. Each sediment sample was wetly sieved to obtain a weight distribution percentage based on the sieve size. Sediment statistical analysis of each sample was based on the Folk and Ward Method. The results of the study show that the average conditions of Lampuuk sediment in the upper swash zone are medium sand; Moderately Well Sorted; Symmetrical; and Mesokurtic. In Addition, at the lower swash zone is found a medium sand; Moderately Sorted; Coa...
An element of a ring R with identity is called strongly clean if it is the sum of an idempotent a... more An element of a ring R with identity is called strongly clean if it is the sum of an idempotent and a unit that commute. When R is a projective free ring, a characterization of strongly clean elements in ) (R M n has been given (7). When R is a principal ideal domain (P.I.D.), towards such a characterization we take an approach which uses well known structure of idempotent matrices in ) (R M n . We use this to characterize non triangular strongly clean elements in ) ( 2 Z M in terms of their entries.
Heavy metals were determined in the most abundant species of bivalve mollusks (Donax trunculus) a... more Heavy metals were determined in the most abundant species of bivalve mollusks (Donax trunculus) along Port Said coasts on southeastern Mediterranean Sea and in the sediments where they live. The mean concentrations (μg g -1 ) of heavy metals in bottom sediment were as follows: Fe: 1748.2-1918.7, Mn: 191.4-217.8, Zn: 28-36.6, Cu: 5.7-9.4, Pb: 18.8-24.4, Cd: 1.4-2.0, and in surface water: Fe: 822.6-896, Mn: 169.3-198, Zn: 271.3.6-300, Cu: 12.619.3, Pb: 40.0-56.0, Cd: 0.8-2.7,while in soft tissues of the bivalve D. trunculus, the mean concentrations (μg g -1 dry weight) were as follows: Fe: 57.2-66.4, Mn: 6.0-7.6, Zn: 32.8-36.4, Cu: 4.0-4.4, Pb: 8.8-9.2, Cd: 2.1-2.4. The present study has revealed that the concentrations of Cd and Pb in the soft tissues of the edible bivalve D. trunculus were above the maximum acceptable concentrations for human consumption proposed by FAO/WHO, EU. Moreover, estimation of concentration factor (Cf) for the studied metals in the soft tissues of the edibl...
The aim of the present study is to assess the present geo-hazards, both flash flooding and seismi... more The aim of the present study is to assess the present geo-hazards, both flash flooding and seismic activity at the western part of Adabiya Port area, Gulf of Suez. Assessment of include Remote Sensing technique was applied using satellite images, topographical, geological and other geological data through GIS technologies. GIS data integration, including the morphometric; local seismic activity and the structural data analysis, indicated that the area is threatened by two types of geo-hazards. The morphometric analysis strongly supported the high probability of flash flooding in different sites within the study area. The structural lineaments, extracted from enhanced ETM+7 image, showed that the major of seismic activity are related to the segments of the fault system of the Gulf of Suez and Gulf of Aqaba. The seismic activity hazard was taken into consideration through identification of the sources of events. The seismic activity in the study area markedly increases from north to s...
Tiran and Sanafir islands and their surrounding areas are very important due to their location wi... more Tiran and Sanafir islands and their surrounding areas are very important due to their location within the Red Sea, which is in a triple junction among the African and Arabian plates and the Sinai Peninsula microplate. Consequently, this area should be studied from a geological point of view, particularly because there is a plan to construct King Salman’s bridge connecting Egypt and Saudi Arabia. Freely available potential field data, such as magnetic and gravity data, were integrated with seismological data from nearby seismic stations to understand the regional structure and seismic activity in the area. Potential field data were analysed using edge detection techniques (Tilt DeRivative and horizontal gradient) for qualitative interpretation and 2D inversion modelling for quantitative interpretation. Seismological data were analysed geostatistically to identify many epicentre locations and estimate the focal depths. The results of the potential field data analysis indicate that Tir...
Advances in Remote Sensing and Geo Informatics Applications, 2018
The current study highlighted the usefulness of satellite images in monitoring and predicting cha... more The current study highlighted the usefulness of satellite images in monitoring and predicting changes occurring on the shorelines through a bi-dimensional data based and situational based strategy. Three coastal areas of the Jeddah city were selected as Salman Bay, Sharm Abhar and Jeddah Port. For the data-based dimension, data collected through satellite images were used in the analysis covering the period 1972–2016. Four regression models were used to study the variation in the coastal borders of the study area. Predictions for the next 9 years (up to 2025) were carried out using the four Regression models. The results of the findings revealed that shrinkage has been witnessed in all areas under study. Another fact came to the limelight is the proximity of the objective results with expectations of the experts thus providing credence to the appropriateness of the used statistical models. For the situational based dimension, the effect of various anthropogenic activities and geo-en...
ABSTRACT Geographic information system and remote sensing techniques are used to determine the sp... more ABSTRACT Geographic information system and remote sensing techniques are used to determine the spatial association between the hydrogeochemical and seismological evidences of well known geothermal fields in South Sinai. Manipulation, combination, overlay, integration and reattribution GIS functions have been used to explore the possible new occurrences of geothermal resources in South Sinai. Moreover, surface observations and lineament analysis of satellite images are used to delineate the active geothermal areas. The distribution of recent earthquake epicentres over South Sinai shows three main active trends (N 6° E, N 40°–75° E and N 50°–60° W) conformable with the long fault extensions extracted from ETM+7 and ASTER GDEM satellite images and comprise the well-known hot springs in South Sinai. It is found that wherever the N 6° E trend intersects both of N 50°–60° W or N 40°–75° E, the temperature of spring waters is remarkably increased. This feature could be attributed to the deep penetration of groundwater along the N 6° E fault trend (Gulf of Aqaba trend). The seismicity patterns of well-known and newly predicted geothermal sites show that the majority of earthquakes have focal depth range between 3 and 33 km (within the upper Earth crust) and have micro to moderate magnitude (0.5≥Mb≤4.5). In addition, the maximum focal depth of events reached up to 50 km at the Hammam Faroun area revealing the deep-seated thermal source. The main chemical type of the known thermal water of South Sinai is Cl-Na, indicating a long flow pathway of this water. The high calcium contents of thermal water of South Sinai are accompanied with remarkably low sulphates. This could be attributed to the microbial or thermal reduction of sulphates in contact with organic carbon which is confirmed by the emission of H2S gas observed at the known thermal field sites.As a result, thermal waters of the Hammam Faroun and Hammam Musa are undersaturated with respect to gypsum and anhydrite. The hydrochemistry of the newly predicted thermal sites exhibit similar pattern of the known thermal waters. Such observations are used as indicators to locate six predicted new occurrences of geothermal fields in South Sinai.
IOP Conference Series: Earth and Environmental Science, 2019
This research focuses on the granulometric analysis of coastal sediments zone in Lampuuk-Lhoknga ... more This research focuses on the granulometric analysis of coastal sediments zone in Lampuuk-Lhoknga Beach, Aceh Province. A total of 11 stations along Lampuuk-Lhoknga Beach located in swash zone are determined as locations for data collection. The sample sediment was collected in November 2018. The selected station was divided into two zones namely the upper swash zone (USZ) and lower swash zone (LSZ). The sampling technique was carried out by using a vertical coring method in order to get a sediment layer with a thickness of 5 cm from the surface. Each sediment sample was wetly sieved to obtain a weight distribution percentage based on the sieve size. Sediment statistical analysis of each sample was based on the Folk and Ward Method. The results of the study show that the average conditions of Lampuuk sediment in the upper swash zone are medium sand; Moderately Well Sorted; Symmetrical; and Mesokurtic. In Addition, at the lower swash zone is found a medium sand; Moderately Sorted; Coa...
An element of a ring R with identity is called strongly clean if it is the sum of an idempotent a... more An element of a ring R with identity is called strongly clean if it is the sum of an idempotent and a unit that commute. When R is a projective free ring, a characterization of strongly clean elements in ) (R M n has been given (7). When R is a principal ideal domain (P.I.D.), towards such a characterization we take an approach which uses well known structure of idempotent matrices in ) (R M n . We use this to characterize non triangular strongly clean elements in ) ( 2 Z M in terms of their entries.
Heavy metals were determined in the most abundant species of bivalve mollusks (Donax trunculus) a... more Heavy metals were determined in the most abundant species of bivalve mollusks (Donax trunculus) along Port Said coasts on southeastern Mediterranean Sea and in the sediments where they live. The mean concentrations (μg g -1 ) of heavy metals in bottom sediment were as follows: Fe: 1748.2-1918.7, Mn: 191.4-217.8, Zn: 28-36.6, Cu: 5.7-9.4, Pb: 18.8-24.4, Cd: 1.4-2.0, and in surface water: Fe: 822.6-896, Mn: 169.3-198, Zn: 271.3.6-300, Cu: 12.619.3, Pb: 40.0-56.0, Cd: 0.8-2.7,while in soft tissues of the bivalve D. trunculus, the mean concentrations (μg g -1 dry weight) were as follows: Fe: 57.2-66.4, Mn: 6.0-7.6, Zn: 32.8-36.4, Cu: 4.0-4.4, Pb: 8.8-9.2, Cd: 2.1-2.4. The present study has revealed that the concentrations of Cd and Pb in the soft tissues of the edible bivalve D. trunculus were above the maximum acceptable concentrations for human consumption proposed by FAO/WHO, EU. Moreover, estimation of concentration factor (Cf) for the studied metals in the soft tissues of the edibl...
The aim of the present study is to assess the present geo-hazards, both flash flooding and seismi... more The aim of the present study is to assess the present geo-hazards, both flash flooding and seismic activity at the western part of Adabiya Port area, Gulf of Suez. Assessment of include Remote Sensing technique was applied using satellite images, topographical, geological and other geological data through GIS technologies. GIS data integration, including the morphometric; local seismic activity and the structural data analysis, indicated that the area is threatened by two types of geo-hazards. The morphometric analysis strongly supported the high probability of flash flooding in different sites within the study area. The structural lineaments, extracted from enhanced ETM+7 image, showed that the major of seismic activity are related to the segments of the fault system of the Gulf of Suez and Gulf of Aqaba. The seismic activity hazard was taken into consideration through identification of the sources of events. The seismic activity in the study area markedly increases from north to s...
Tiran and Sanafir islands and their surrounding areas are very important due to their location wi... more Tiran and Sanafir islands and their surrounding areas are very important due to their location within the Red Sea, which is in a triple junction among the African and Arabian plates and the Sinai Peninsula microplate. Consequently, this area should be studied from a geological point of view, particularly because there is a plan to construct King Salman’s bridge connecting Egypt and Saudi Arabia. Freely available potential field data, such as magnetic and gravity data, were integrated with seismological data from nearby seismic stations to understand the regional structure and seismic activity in the area. Potential field data were analysed using edge detection techniques (Tilt DeRivative and horizontal gradient) for qualitative interpretation and 2D inversion modelling for quantitative interpretation. Seismological data were analysed geostatistically to identify many epicentre locations and estimate the focal depths. The results of the potential field data analysis indicate that Tir...
Advances in Remote Sensing and Geo Informatics Applications, 2018
The current study highlighted the usefulness of satellite images in monitoring and predicting cha... more The current study highlighted the usefulness of satellite images in monitoring and predicting changes occurring on the shorelines through a bi-dimensional data based and situational based strategy. Three coastal areas of the Jeddah city were selected as Salman Bay, Sharm Abhar and Jeddah Port. For the data-based dimension, data collected through satellite images were used in the analysis covering the period 1972–2016. Four regression models were used to study the variation in the coastal borders of the study area. Predictions for the next 9 years (up to 2025) were carried out using the four Regression models. The results of the findings revealed that shrinkage has been witnessed in all areas under study. Another fact came to the limelight is the proximity of the objective results with expectations of the experts thus providing credence to the appropriateness of the used statistical models. For the situational based dimension, the effect of various anthropogenic activities and geo-en...
ABSTRACT Geographic information system and remote sensing techniques are used to determine the sp... more ABSTRACT Geographic information system and remote sensing techniques are used to determine the spatial association between the hydrogeochemical and seismological evidences of well known geothermal fields in South Sinai. Manipulation, combination, overlay, integration and reattribution GIS functions have been used to explore the possible new occurrences of geothermal resources in South Sinai. Moreover, surface observations and lineament analysis of satellite images are used to delineate the active geothermal areas. The distribution of recent earthquake epicentres over South Sinai shows three main active trends (N 6° E, N 40°–75° E and N 50°–60° W) conformable with the long fault extensions extracted from ETM+7 and ASTER GDEM satellite images and comprise the well-known hot springs in South Sinai. It is found that wherever the N 6° E trend intersects both of N 50°–60° W or N 40°–75° E, the temperature of spring waters is remarkably increased. This feature could be attributed to the deep penetration of groundwater along the N 6° E fault trend (Gulf of Aqaba trend). The seismicity patterns of well-known and newly predicted geothermal sites show that the majority of earthquakes have focal depth range between 3 and 33 km (within the upper Earth crust) and have micro to moderate magnitude (0.5≥Mb≤4.5). In addition, the maximum focal depth of events reached up to 50 km at the Hammam Faroun area revealing the deep-seated thermal source. The main chemical type of the known thermal water of South Sinai is Cl-Na, indicating a long flow pathway of this water. The high calcium contents of thermal water of South Sinai are accompanied with remarkably low sulphates. This could be attributed to the microbial or thermal reduction of sulphates in contact with organic carbon which is confirmed by the emission of H2S gas observed at the known thermal field sites.As a result, thermal waters of the Hammam Faroun and Hammam Musa are undersaturated with respect to gypsum and anhydrite. The hydrochemistry of the newly predicted thermal sites exhibit similar pattern of the known thermal waters. Such observations are used as indicators to locate six predicted new occurrences of geothermal fields in South Sinai.
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