Delineating groundwater and subsurface structures by using 2D resistivity, gravity and 3D magnetic data interpretation around Cairo–Belbies Desert road, Egypt

Araffa, Sultan Awad Sultan; Helaly, Ahmed S.; Khozium, Ashraf; Lala, Amir Maher Sayed; Soliman, Shokry A.; Hassan, Noha M.

doi:10.1016/j.nrjag.2015.06.004

Cited by 9 publications

(4 citation statements)

References 9 publications

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“…In using a gravity meter for measurement, the value of the gravitational acceleration measured on the gravity meter still has influencing factors. While the gravity value sought is a value that is not influenced by other factors, or in other words it has been corrected (Araffa et al, 2015). Corrections that must be made are:…”

Section: Gravity Methods Correctionmentioning

confidence: 99%

Geothermal potential analysis using 3d modeling of subsurface structures based on the Gravity Anomaly in the Mount Lawu area, Central Java

Puspita Sari,

Restiana,

Firya Wardhianty

2023

J. Nat. Scien. & Math. Res.

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Over time, energy needs will continue to increase. Dependence on the use of fossil energy results in the availability of such energy will run out at any time, so it is necessary to develop research on geothermal energy that is environmentally friendly and renewable. One of the Geothermal Work areas is on Mount Lawu, located at coordinates between 111°15' east longitude and 7°30' south latitude in several districts Central Java Province and East Java Province. The purpose of this study is to provide information related to geothermal potential using the gravity method by knowing the temperature of the area and the 3D modeling of subsurface structures. Based on the results of the Second Vertical Derivative (SVD) analysis, three normal faults were found in geothermal sources. The modeling results show that the residual anomaly map depicts a distribution of high anomalies ranging between 2 mGal up to 6.5 mGal scattered from North to South and East to West, suspected to be caused by lava rock intrusion. The results of the 3D inversion model show there are three layers, namely clay rock, which is suspected to be cap rock at a depth of 500 - 2500 m, pyroclastic lava rock, which is suspected to be as a reservoir at a depth of 3000 - 4500 m, and lava, which is suspected to be as a reservoir heat source at a depth of 5000 - 8000 m. Based on the map in Land Surface Temperature (LST) obtained the temperature value of Mount Lawu ranging from 3.14 °C - to 23.25 °C.

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Section: Gravity Methods Correctionmentioning

confidence: 99%

Geothermal potential analysis using 3d modeling of subsurface structures based on the Gravity Anomaly in the Mount Lawu area, Central Java

Puspita Sari,

Restiana,

Firya Wardhianty

2023

J. Nat. Scien. & Math. Res.

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“…(1) koreksi pasang surut, (2) koreksi apungan, (3) koreksi udara bebas, (4) koreksi Bouguer, (5) koreksi lintang, dan (6) koreksi medan (Araffa et al, 2015).…”

Section: Metodeunclassified

Analisis Anomali Bouguer Data Gaya Berat Studi Kasus di Kota Lama Semarang

Liana

Wea

Syarifah

et al. 2020

JRST

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Kota Lama Semarang merupakan salah satu obyek wisata sejarah yang berada di kota Semarang dan pada tahun 2016 masuk sebagai salah satu nominasi World Heritage Site. Penelitian ini bertujuan untuk melakukan analisis anomali Bouguer data gaya berat studi kasus di Kawasan Kota Lama Semarang untuk membantu mengidentifikasi struktur bawah permukaan tanah di Kawasan tersebut yang setiap tahunnya selalu terjadi banjir rob, genangan air dan penurunan permukaan tanah. Pengolahan data anomali Bouger menggunakan software Oasis Montaj 6.4.2. Tahap awal dilakukan koreksi pasang surut (TC) dan koreksi apungan (DC). Tahap berikutnya dilakukan koreksi lanjut yang terdiri dari koreksi udara bebas (FAC) dan koreksi Bouguer (BC) hingga didapat kontur anomali udara bebas (FAA) dan kontur anomali Bouguer (BA). Nilai BA di Kawasan Kota Lama Semarang dengan interval 10,58 mGal s.d 11,65 mGal dengan koreksi FAC mempunyai rentang 1,48 mGal s.d 3,09 mGal, anomali FAA mempunyai rentang 11,1 mGal s.d 12,7 mGal serta koreksi gobs mempunyai rentang 978118,88 mGal s.d 978118,50 mGal. Kawasan dengan anomali Bouguer tinggi memiliki struktur batuan dengan densitas yang tinggi dibandingkan dengan Kawasan lainnya. Nilai anomali Bouguer semakin ke utara semakin rendah, dan semakin ke selatan semakin tinggi.

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“…Geology, gravity, seismic, and others can be applied and combined in this state. Each method has its characteristic with different advantages and disadvantages [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…The biggest problem of the gravity method is the ambiguity value [4,9]. Therefore, this method needs some corrections to obtain the best interpretation.…”

Section: Introductionmentioning

confidence: 99%

3D inversion modelling of gravity and geomagnetic in the coastal aquifer of the Mandalika Lombok

Alaydrus

Susilo

Minardi

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Coastal aquifers are essential for coastal communities worldwide, one of which is in the Mandalika area (Lombok Island, Indonesia). This area is the tourism sector which requires an adequate supply of fresh water. Mandalika is a coastal area dominated by alluvial plains, an excellent rock as an aquifer. However, alluvial plains are also susceptible to seawater intrusion. This study uses a combination of gravity and geomagnetic methods to estimate bedrock potential as aquifers based on a 3D inversion model. Data collection was carried out at 151 measuring points using the loop method. Data processing was conducted using Oasis Montaj, Mag3D, and Grav3D. The data were combined to reduce ambiguity in interpreting rock-type estimates. The modelling results show that aquifer composition consists of sandstone, clay, and gravel with a density of about (1.3 - 2.4) g/cm3, susceptibility (0.00040 - 0.0045) SI at an average depth of 2 - 12 m with a percentage of 54.849% of the total 3D models. These rocks dominate the research location scattered around the coastal area of Kuta, around the Circuit to the Mertak area, and are concentrated in the flat morphology areas.

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Delineating groundwater and subsurface structures by using 2D resistivity, gravity and 3D magnetic data interpretation around Cairo–Belbies Desert road, Egypt

Cited by 9 publications

References 9 publications

Geothermal potential analysis using 3d modeling of subsurface structures based on the Gravity Anomaly in the Mount Lawu area, Central Java

Geothermal potential analysis using 3d modeling of subsurface structures based on the Gravity Anomaly in the Mount Lawu area, Central Java

Analisis Anomali Bouguer Data Gaya Berat Studi Kasus di Kota Lama Semarang

3D inversion modelling of gravity and geomagnetic in the coastal aquifer of the Mandalika Lombok

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