Curie Point Depth, Geothermal Gradient and Heat-Flow Estimation and Geothermal Anomaly Exploration from Integrated Analysis of Aeromagnetic and Gravity Data on the Sabalan Area, NW Iran

Afshar, Ahmad; Norouzi, Gholam-Hossain; Moradzadeh, Ali; Riahi, Mohammad Ali; Porkhial, Soheil

doi:10.1007/s00024-016-1448-z

Cited by 19 publications

(5 citation statements)

References 63 publications

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“…Such a thermal boundary is usually associated with the magnetic properties of the magnetite, the most common magnetic mineral, which beyond ~ 580 °C has a ferromagnetic-to-paramagnetic transition (e.g. 15 ). We point out that, as far as we know, a Curie depth model has not been yet published for Sicily.…”

Section: Introductionmentioning

confidence: 99%

Crustal structure of Sicily from modelling of gravity and magnetic anomalies

Milano

Kelemework

Manna

et al. 2020

Sci Rep

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We aim at modeling the main crustal and thermal interfaces of Sicily (Italy), a key area for understanding the geological complexity at the collisional boundary between the African and European plates. To this end, we analyze the gravity and magnetic fields, integrated with information from well logs, geology, heat flow, and seismic data. In order to make the most accurate description of the crustal structure of the area, we modeled with different methodologies the carbonate and crystalline top surfaces, as well as the Moho and the Curie isotherm surface. The reconstruction of the carbonate platform is achieved using a nonlinear 3D method constrained by the available seismic and borehole data. The crystalline top, the Curie, and the Moho are instead estimated by spectral analysis of both gravity and magnetic data. The results show a complex carbonate basement and a deep crystalline crust in central Sicily, with a prominent uplift beneath the Hyblean Plateau. Maps of the Moho and the Curie isotherm surface define a variable thermal and structural setting of Sicily, with very thin crust in the southern and eastern sectors, where high heat flow is found, and deep and cold crust below the Caltanissetta Basin.

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Section: Introductionmentioning

confidence: 99%

Crustal structure of Sicily from modelling of gravity and magnetic anomalies

Milano

Kelemework

Manna

et al. 2020

Sci Rep

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“…The top of the apparent resistivity map and the anomaly map shows a stable limit of low resistivity at < 200 m, probably related to the permafrost layer over the sea level. Finally, the CO 2 and CH 4 gas measurements show a rapid peak by the end of August 29 th , 2020, which is being analyzed in the frame of hypotheses of the earthquake cycle (Chen et al 2018, Lobkovsky 2020, Yue 2013. Hence, robust analyses would be required to establish trusty patterns for adequately describing geophysical precursor occurrences.…”

Section: Results Discussion and Conclusionmentioning

confidence: 99%

“…The valuable information obtained by the MT image allows subsurface resistivity images, being possible to discern from superficial phenomena such as the presence of water or underground ore deposits to deep structures such as the lithosphereasthenosphere boundary -LAB (Corbo-Camargo et al 2013) or the Curie Point Depth (loss of the magnetic properties of minerals as a response to the thermal structure of the lithosphere) (Afshar et al 2017). The MT method uses natural geomagnetic field variations on the ionosphere and lightning storms and consequent orthogonal electric field surface signals to establish the subsurface resistivity and map structures up to 600 km depending on sampling and survey duration (Simpson and Bahr 2005).…”

Section: Introductionmentioning

confidence: 99%

Quasi real-time electromagnetic and greenhouse gases monitoring station at Seymour - Marambio Island, Antarctica

Solano¹,

Vargas²,

Gulisano³

2021

Czech Polar Rep.

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A new permanent geophysical station was installed in the Seymour-Marambio Island, Antarctica, for monitoring electromagnetic, CO2, and CH4 gas signals. Those signals require specialized low noise instruments and the survey shall be carried out in places far away from cultural noise, such as populated human settlements. The most suitable place would be near the Earth's poles, where noise is the lowest possible. To measure these variables, the Geophysical Instrumentation Laboratory (Laboratorio de Instrumentación Geofísica - LIG) of the Universidad Nacional de Colombia, in a partnership with the Instituto Antártico Argentino (IAA) under the Argentinean National Antarctic Direction (Dirección Nacional del Antártico - DNA), deployed the COCOAonMEAT project, oriented to design, built and install a low-cost station with time synchronization via GPS and data transmission in almost real-time. Since January 2020, the project monitors continuously (24/7) seven variables: three magnetic components, two electric dipoles, methane (CH4), and carbon dioxide (CO2) gas. Due to operative facilities and its low electromagnetic noise, the place chosen for its installation was the Argentinean Marambio Scientific Base in the Antarctic Peninsula, with the Multidisciplinary Antarctic Laboratory's collaboration (Laboratorio Multidisciplinario Antártico en la Base Marambio - LAMBI). This station provides valuable information on electromagnetic signals and greenhouse gases related to regional tectonic activity and local perturbations associated with global climate change.

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“…Likewise, Kashem et al (2021) searched the feasibility of a geothermal energy system in Indonesia, referring that despite all the cons caused by geothermal energy, the government still looks forward to turning Indonesia into the world's largest geothermal electricity producer over the next 10 years. Similarly, Afshar et al (2017) investigated the development of geothermal power in Iran and indicated that Curie point depth could induce the occurrence of earthquakes and the nature of the thermal spring is connected to geothermal resources depth at the top. In the same way, Al-Douri et al (2019) explored geothermal energy reserve and potential in Saudi Arabia, points that geothermal power has the potential to contribute to fulfilling the country's demands for being a part of an effective plan for reducing carbon dioxide (CO 2 ) emissions.…”

Section: Literature Reviewmentioning

confidence: 99%

Rethinking the governance of geothermal power industry: The roadmap for sustainable development

Alsaleh

Abdul‐Rahim

2023

Energy Exploration & Exploitation

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The European geothermal heating market, at one time dominated by only a handful of countries, is set to experience a purple patch in the coming years as governments scramble to find an affordable alternative to expensive gas-fired heating. The primary focus of this study will be to investigate what effect will worldwide governance factors and economic growth on the geothermal energy output among the 27 European Countries from the time being 1996 to 2021. Using the autoregressive distributed lag, the findings shows that a significant increase in the geothermal energy industry sustainability can occur in European Union 14 (EU14) emerged economies using worldwide governance factors than in EU13 emerging economies. Among additional factors, instability in the political realm, regulatory issues in the area of quality, accountability, and voice-related issues, and the ability to curb corrupt practices contribute more positively to geothermal energy sustainability in EU14 emerged economies than in European Union 13 (EU13) emerging economies. On the other hand, government effectiveness contributes more positively to geothermal energy sustainability in EU13 emerging economies than in EU14 emerged economies. The finding implies that geothermal power sustainability in EU region countries can be significantly increased by mounting the level of worldwide governance determinants to achieve Energy Union aims by 2030. This will finally be spread to combat climate change and environmental pollution. All observations on projected calculations are valid. The confirmation was achieved with the aid of the three estimators used in the study which are the pooled mean group estimator, the mean group estimator, and the third one was dynamic fixed effect approach. This study recommended that these European countries need to put more effort in terms of being effective in worldwide governance indicators which will help in goal attainment at the societal and environmental levels. Those in charge of making laws in the European countries should get more engaged in worldwide governance scopes as this will assist in facilitating the security and sustainability of geothermal energy generation. Those in charge of making policies in the EU countries should as well lay more emphasis on the strategies that could be cointegrated and as well sustainable toward worldwide governance fractionation toward the achievement of the sustainability of geothermal power and this will drastically reduce the need or dependence on fossil fuel and emissions coming from carbon dioxide in the future time.

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Curie Point Depth, Geothermal Gradient and Heat-Flow Estimation and Geothermal Anomaly Exploration from Integrated Analysis of Aeromagnetic and Gravity Data on the Sabalan Area, NW Iran

Cited by 19 publications

References 63 publications

Crustal structure of Sicily from modelling of gravity and magnetic anomalies

Crustal structure of Sicily from modelling of gravity and magnetic anomalies

Quasi real-time electromagnetic and greenhouse gases monitoring station at Seymour - Marambio Island, Antarctica

Rethinking the governance of geothermal power industry: The roadmap for sustainable development

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