High Resolution Ground Magnetic Survey (HRGM) for Determining the Optimum Location of Subsurface Dam in Wadi Nu’man, Makkah Al Mukarammah, KSA

Gobashy, Mohamed; Al‐Garni, Mansour A.

doi:10.4197/ear.19-1.4

Cited by 14 publications

(10 citation statements)

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“…Es‐Saeed et al () studied the general relationship between the climatologic, hydrologic, geologic, geophysical, and hydrogeological features of Wadi Na'man for strategic groundwater resource evaluation and its allocation in case of an emergency. In order to increase groundwater levels to a point where Ain Zubaidah can flow again, Gobashy and Al‐Garni () used high‐resolution ground magnetic surveys (HRGM) to determine the optimal locations for subsurface dam construction. Qari et al () used Aster and Landsat satellite image for lithologic discrimination and lineament mapping using several techniques for image processing.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Groundwater Potential Zones in Hard Rock Terrain, Wadi Na'man, Saudi Arabia

Algaydi

Subyani²,

Hamza

2019

Groundwater

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In arid and hyper‐arid zones, groundwater exploration is one of the most significant ways to locate potential new water supplies. Geophysical prospecting is currently the most successfully used method for locating new supplies, but it is rather costly. Satellite remote sensing (RS) detection, however, with its integration of Geographic Information Systems (GIS) provides the best chance for identifying and initially evaluating water‐bearing formations. In the western part of Saudi Arabia, Wadi Na'man has for centuries been one of the major water sources for the city of Makkah Al‐Mukarramah. It is therefore very important to find appropriate groundwater potential (GP) zones in this wadi for water supply. This study utilizes RS and GIS techniques, and also studies the hydrogeological, geological, and geomorphological characteristics that have significant impact on groundwater occurrence in Wadi Na'man. Representative layers are generated for each component and each given a weight ratio that depends on the level of influence. The overlay and integration of these thematic layers was used to produce a map that shows the most promising potential groundwater areas and classifies local potentials as either low, medium, or high. The results also reveal that the areas overall‐rated as “promising” (i.e., classified as medium or high) represent approximately 17‐25% of the total basin area and consist mainly of Quaternary sediments and connected fractured rock areas.

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Section: Introductionmentioning

confidence: 99%

Investigation of Groundwater Potential Zones in Hard Rock Terrain, Wadi Na'man, Saudi Arabia

Algaydi

Subyani²,

Hamza

2019

Groundwater

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“…2 Digital elevation map of the study area structural and geological observations, they serve as a means of locating anomalous sources: their depths, dimension, magnetization and in providing lithological information and structural frameworks for inferring information about tectonic evolution, mineralization, etc. (Jaques et al 1997;Aitken and Betts 2009;Gobashy and Al-Garni 2008;Airo and Mertanen 2007;Sultan et al 2009). …”

Section: High-resolution Aeromagnetic (Hram) Data: Processing and Intmentioning

confidence: 92%

Existence of a possible subsurface ring complex in the northwestern part of the Nigerian Younger Granite province: a contribution from aeromagnetic and remote sensing data

2014

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The study area lies within the north-western part of the Nigerian Younger Granite province. It is bounded by latitude 10°30′N and 11°00′N and longitude 8°00′E and 9°00′E. Previous geological and geophysical studies that were carried out in the study area focused mainly on the ring complexes with surface exposure while nothing is known about those without the surface exposure. This has resulted in gap in geo-scientific knowledge which this study aimed to fulfill. First vertical derivative (FVD) and Euler deconvolution of the aeromagnetic data along with processed DEM were used to achieve this purpose. Results of the interpretation revealed a magnetic anomaly, almost circular in shape, with characteristics that are similar to the anomalies that spatially coincide with the prominent ring complexes but without the outcrops that are associated with the complexes. This anomaly is interpreted to be an unexposed ring. Lineaments revealed by the results are mainly oriented in the E-W, NE-SW and NW-SE. The lineaments in the NE-SW and its conjugate are the most developed lineament system. Presence of ring complexes on and along the lineaments favours the opinion that the emplacement sites of the complexes are influenced by the reactivated Pan-African shear zones and transcurrent faults. In particular, the cross-over of major lineaments at the nonoutcropping anomaly may suggest a very weak zone that probably allowed the volcanic eruption that initiated the emplacement of the unexposed ring complex. Results of the Euler deconvolution suggest a cylindrical-like body for the unexposed ring complex, which is consistent with pluton geometry, and a depth that range from outcrop to 1,200 m for it.

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“…One has to determine manually the specific structural index (SI) to analyze, using the geologic experience. In the present section (3D analysis), the pilot technique, proposed by Stravrev and Reid (1997) and Gerovska and Araúzo-Bravo (2003), was applied to interpret the aeromagnetic anomalies of Wadi Nu'man, Makkah Al Mukarammah, KSA (Gobashy and Al-Garni 2008), assuming a linear background with un-prescribed structural index based on the properties of the differential similarity transformation (DST). The un-prescribed Euler Deconvolution method, simply results are the position of the source and the source kind.…”

Section: D Euler Deconvolution (Ed) and Magnetic Source Identificationmentioning

confidence: 99%

Integrating magnetic and stratigraphic data to delineate the subsurface features in and around new Galala City, Northern Galala Plateau, Egypt

Abdelazeem

Fathy

Khalifa

2019

NRIAG Journal of Astronomy and Geophysics

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The Egyptian Government is developing a new city, Galala, above the Northern Galala Plateau, western side of Gulf of Suez between Ain Sukhna and Zafarana. The aim of the study is integrating magnetic and stratigraphic data to delineate the subsurface features beneath the New Galala City, in order to avoid the possible geological hazards. The stratigraphic succession in the study area consists of Precambrian basement complex overlain unconformably by Phanerozoic sequence. The Phanerozoic sequence composed mainly of siliciclastic-dominated rocks superimposed by carbonate-dominated rocks. The carbonatedominated rocks cover most surface area, whilst the siliciclastic-dominated rocks exposed along eastern and southern foot slope of the Northern Galala Plateau. The observed palaeokarst surfaces, fissures, caves, sink-holes and fault zones within carbonate rocks may cause some geological hazards in the study area. The total intensity aeromagnetic map was subjected to un-prescribed structural index 3D-Euler Deconvolution (ED), the tilt angle derivative (TDR) and the power spectrum in order to estimate both trends and source depths.

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High Resolution Ground Magnetic Survey (HRGM) for Determining the Optimum Location of Subsurface Dam in Wadi Nu’man, Makkah Al Mukarammah, KSA

Cited by 14 publications

References 0 publications

Investigation of Groundwater Potential Zones in Hard Rock Terrain, Wadi Na'man, Saudi Arabia

Investigation of Groundwater Potential Zones in Hard Rock Terrain, Wadi Na'man, Saudi Arabia

Existence of a possible subsurface ring complex in the northwestern part of the Nigerian Younger Granite province: a contribution from aeromagnetic and remote sensing data

Integrating magnetic and stratigraphic data to delineate the subsurface features in and around new Galala City, Northern Galala Plateau, Egypt

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