scholarly journals Review of Curie point depth determination through different spectral methods applied to magnetic data

2020 ◽  
Vol 224 (1) ◽  
pp. 17-39
Author(s):  
P Núñez Demarco ◽  
C Prezzi ◽  
L Sánchez Bettucci
Keyword(s):  
Spectral Methods ◽  
Curie Point ◽  
Magnetic Data ◽  
Moho Depth ◽  
Curie Point Depth ◽  
Systematic Analysis ◽  
Methodological Errors ◽  
Depth Determination ◽  
Methodological Procedures

SUMMARY Spectral methods have been applied for more than 40 yr to calculate the depth to magnetic sources and the Curie point depth or Moho depth. Unfortunately, conceptual, theoretical and methodological errors, as well as, subjective approaches and lack of rigor in the application of the method are common. This has affected reproducibility, credibility and confidence in this method. We carried out a detailed mathematical and methodological revision of the spectral methods (centroid, spectral peak, forward and fractal methods) applied to magnetic data for the determination of the depth to magnetic sources. Moreover, a systematic analysis of more than 110 articles was done in order to compile and compare the different approaches and values of key parameters used by different authors in their calculations. We discuss difficulties, conditions and methodological procedures, as well as several misapplications and misinterpretation of the different methods.

Moho Depth Determination of the Adriatic Sea Region Using a New Bouguer Anomaly Database

2015 ◽  
Author(s):  
G.A. Tassis ◽  
C.B. Papazachos ◽  
G.N. Tsokas ◽  
I.N. Tziavos ◽  
I. Vasiljević ◽  
...  
Keyword(s):  
Adriatic Sea ◽  
Bouguer Anomaly ◽  
Moho Depth ◽  
Depth Determination

scholarly journals Curie point depth and heat flow deduced from spectral analysis of magnetic data over Adamawa volcanic region (Northern Cameroon): geothermal implications

2020 ◽  
Vol 2 (8) ◽  
Author(s):  
Kasi Njeudjang ◽  
Janvier Domra Kana ◽  
Ahmat Tom ◽  
Jean Marcel Abate Essi ◽  
Noël Djongyang ◽  
...  
Keyword(s):  
Spectral Analysis ◽  
Heat Flow ◽  
Curie Point ◽  
Magnetic Data ◽  
Curie Point Depth ◽  
Volcanic Region ◽  
Northern Cameroon

scholarly journals Estimation of Curie point depths in the Southern Vietnam continental shelf using magnetic data

2019 ◽  
Vol 41 (3) ◽  
pp. 216-228 ◽  
Author(s):  
Pham Thanh Luan ◽  
Do Duc Thanh ◽  
Erdinc Oksum ◽  
Le Thi Sang
Keyword(s):  
Analytical Solution ◽  
Continental Shelf ◽  
Curie Point ◽  
Thermal Structure ◽  
Magnetic Data ◽  
Curie Point Depth ◽  
Heat Flows ◽  
Southern Vietnam ◽  
Exponential Equations ◽  
North Western

This study attempts to estimate the thermal structure in the Southern Vietnam continental shelf by calculating the Curie point depth isotherm using magnetic data. The Curie point depth values, from 49 overlapping blocks 128 × 128 km in size, have been estimated by the exponential approach. This approach is based on the analytical solution of the exponential equations obtained from transforming the magnetic anomaly data into the frequency domain. According to the obtained results, the range of Curie point depths is from 15.3 to 35.6 km. In the study area, the greatest Curie point depth is located in the South-Eastern part, and the smallest depth is located at North-Western part. The heat flows derived from the Curie point depths are also presented. The obtained results are at relatively high resolutions and in agreement with the published information available for the study area. The Curie point depths generally lie below the Moho surface in this region but lie above in some locations, notably the Cuu Long basin.

Curie-point depth from spectral analysis of magnetic data in central–southern Europe

2005 ◽  
Vol 152 (4) ◽  
pp. 267-276 ◽  
Author(s):  
P. Chiozzi ◽  
J. Matsushima ◽  
Y. Okubo ◽  
V. Pasquale ◽  
M. Verdoya
Keyword(s):  
Spectral Analysis ◽  
Curie Point ◽  
Magnetic Data ◽  
Curie Point Depth ◽  
Southern Europe

scholarly journals Curie point depth from spectral analysis of magnetic data in Taiwan

2014 ◽  
Vol 90 ◽  
pp. 26-33 ◽  
Author(s):  
Hsien-Hsiang Hsieh ◽  
Chieh-Hung Chen ◽  
Pei-Ying Lin ◽  
Horng-Yuan Yen
Keyword(s):  
Spectral Analysis ◽  
Curie Point ◽  
Magnetic Data ◽  
Curie Point Depth

Curie point depth and heat flow maps deduced from magnetic data of Gonghe Basin, China

2021 ◽  
Author(s):  
Zhuo Wang ◽  
Zhaofa Zeng
Keyword(s):  
Magnetic Susceptibility ◽  
Heat Flow ◽  
Curie Point ◽  
Magnetic Data ◽  
Inversion Method ◽  
Adjacent Area ◽  
Curie Point Depth ◽  
Actual Measurement ◽  
New Energy ◽  
Gonghe Basin

<p>Most recently, energy consumption around the world steps into a new situation divided by petroleum, natural gas, coal and new energy. Fossil fuels are disputed for pollution and CO<sub>2</sub> emission, and geothermal energy is popular as a clean, ecofriendly and renewable new energy, which can be used for power generation or direct application (e.g. bathing, building heating).</p><p>Gonghe Basin, located in the western part of China, has been thought as a potential geothermal field since 1989. To investigate geothermal distribution in Gonghe Basin and adjacent area, magnetic data is used in this paper. Firstly, we proposed an improved magnetic interface inversion method based on traditional Park-Oldenburg method. This improved method introduces dual geological interfaces instead of one interface, variable magnetic susceptibility instead of constant magnetic susceptibility and upward continuation in a form equivalent to inversion iteration in the Fourier domain instead of the divergent, downward continuation term, to improve suitability and precision of the inversion method. Then Curie point depth (CPD) map and heat flow map could be deduced from magnetic data through the improved Park-Oldenburg method.</p><p>The CPDs range from 16 to 25.5 km and heat flow values range from 61 to 91 mW/m<sup>2</sup>. What's more, we take faults and seismic activities into account, we find that study area has greater geothermal potential in eastern part with shallower CPD, higher heat flow values and more active subsurface structure. Considering with known geothermal value in actual measurement, the results indicate high heat flow value in Gonghe Basin is coaction of high thermal background, radiogenic heat and partial geothermal anomalous heat source. </p>

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