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Kukkonen, Ilmo; Jokinen, Jarkko; Seipold, U.

doi:10.1023/a:1006655023894

Cited by 73 publications

(15 citation statements)

References 22 publications

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“…Temperature estimates for Model 1 and Model 2 are shown by blue and red solid lines (Figure 10b). Previous studies showed that thermal conductivity and heat production are the most important parameters to control temperature estimates (Kukkonen et al, 1999;Jaupart et al, 2016;Ray et al, 2021). Therefore, for each model, ±10% uncertainty in thermal conductivity and heat production are used to estimate the temperatures, which are plotted by dashed lines in Figure 10b.…”

Section: Accepted Articlementioning

confidence: 99%

Thermal and Physical Properties of Deccan Basalt and Neoarchean Basement Cores From a Deep Scientific Borehole in the Koyna−Warna Seismogenic Region, Deccan Volcanic Province, Western India: Implications on Thermal Modeling and Seismogenesis

Ray

Gupta

Chopra

et al. 2021

Earth and Space Science

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We have investigated 78 core samples of basaltic trap and Neoarchean basement in the laboratory from a 981 m deep scientific borehole KBH-05, in the Koyna−Warna seismic zone, in order to characterize their thermal and physical properties and present a probable crustal thermal model. The Koyna−Warna, located in the Deccan Volcanic Province (DVP), is globally one of the most prominent Reservoir Triggered Seismicity (RTS) regions. Thermal conductivity, density, and porosity vary widely (1.0-1.7 Wm -1 K -1 , 2400-3000 kg m -3 , 0.2-10%) for the basalt due to their lithological heterogeneities, i.e., massive/amygdaloidal/vesicular. In comparison, the basement, which dominantly consists of gneiss/migmatite gneiss (granodiorite to tonalite to quartz monzodiorite in composition) and amphibolite, have shown a wider range in thermal conductivity (2.2-3.4 Wm -1 K -1 ) but constricted range in density and porosity (2600-2800 kg m -3 , 0.01-0.15%).Based on gamma and sonic logs, as well as radioelements (Th, U, K), the 499 m thick basaltic trap can be divided into two thick layers (325, 174 m) and five sub-layers, which can be correlated with different basaltic formations. Similarly, the underlying basement can also be divided into two layers (93, 384 m). The upper basement layer has two times higher concentrations of Th and U than the lower layer, with heat production of 2.0, 0.8 μWm -3 . Further, the study provides a robust temperature estimate of 165-250 o C at 10 km depth, considerably higher than reported earlier for the DVP, and reveals that in addition to thermal parameters, RTS also plays an important role in the seismogenesis of the region.

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Section: Accepted Articlementioning

confidence: 99%

Thermal and Physical Properties of Deccan Basalt and Neoarchean Basement Cores From a Deep Scientific Borehole in the Koyna−Warna Seismogenic Region, Deccan Volcanic Province, Western India: Implications on Thermal Modeling and Seismogenesis

Ray

Gupta

Chopra

et al. 2021

Earth and Space Science

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“…Instead of using parameters A and B, we can use two other parameters, namely, the thermal conductivity at a reference temperature λ o and a single temperature coefficient of thermal conductivity b (K −1 ). Thus, the following relation is used [9,12]:…”

Section: Existing Models For Thermal-conductivity Predictionmentioning

confidence: 99%

Modeling of Effective Thermal Conductivity of Dunite Rocks as a Function of Temperature

Aurangzeb

Mehmood

Maqsood³

2008

Int J Thermophys

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The thermal conductivity, thermal diffusivity, and heat capacity per unit volume of dunite rocks taken from Chillas near Gilgit, Pakistan, have been measured simultaneously using the transient plane source technique. The temperature dependence of the thermal transport properties was studied in the temperature range from 303 K to 483 K. Different relations for the estimation of the thermal conductivity are applied. A proposed model for the prediction of the thermal conductivity as a function of temperature is also given. It is observed that the values of the effective thermal conductivity predicted by the proposed model are in agreement with the experimental thermal conductivity data within 9 %.

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“…On the other hand, hydrostatic pressure significantly affects the effective thermal conductivity of rocks. When constructing the pressure dependences of the effective thermal conductivity of rocks (for example, [9,10]), a linear approximation is usually used after a certain pressure (~ 100 MPa) without taking into account the effect of pressure on the temperature dependence. Despite satisfactory agreement at sufficiently high pressures, this may be insufficient when considering thermal processes occurring in the range from atmospheric to 200 MPa.…”

Section: Introductionmentioning

confidence: 99%

Temperature-baric behavior of the effective thermal conductivity of sandstones

Emirov

Aliverdiev

Aliev

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The paper presents the results of measurements of the effective thermal conductivity of three sandstone samples exhibiting different structural ordering in the temperature range 273-523 K and pressures from atmospheric to 400 MPa, as well as (2) a low-parameter model, described as a temperature dependence at a fixed pressure and the pressure dependence at a fixed temperature. It also describes the influence of pressure on the nature of the temperature dependence. The samples from the following deposits were studied: (1) Kochubei, the Republic of Dagestan, (2) Buinaksk, the Republic of Dagestan, and (3) the Tyumen superdeep well. It was shown that the cumulative increase in temperature and pressure for sandstones with different structural ordering (even when the absolute values of the effective thermal conductivity at atmospheric pressure and room temperature are close) can have a qualitative difference and with a predominantly amorphous ordering, it must be taken into account when compiling temperature models in the terrestrial bark.

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Cited by 73 publications

References 22 publications

Thermal and Physical Properties of Deccan Basalt and Neoarchean Basement Cores From a Deep Scientific Borehole in the Koyna−Warna Seismogenic Region, Deccan Volcanic Province, Western India: Implications on Thermal Modeling and Seismogenesis

Thermal and Physical Properties of Deccan Basalt and Neoarchean Basement Cores From a Deep Scientific Borehole in the Koyna−Warna Seismogenic Region, Deccan Volcanic Province, Western India: Implications on Thermal Modeling and Seismogenesis

Modeling of Effective Thermal Conductivity of Dunite Rocks as a Function of Temperature

Temperature-baric behavior of the effective thermal conductivity of sandstones

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