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Heat Flow Studies in India: An Update.

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Title: Heat Flow Studies in India: An Update.
Authors: Ray, Labani1 (AUTHOR) labani@ngri.res.in
Source: Journal of the Geological Society of India. Oct2021, Vol. 97 Issue 10, p1214-1225. 12p.
Subject Terms: *Physiographic provinces, *Geothermal resources, *Thermal conductivity, *Power resources, *Climate change, *Sedimentary basins
Geographic Terms: India
Abstract: The geothermal study in India was initiated in 1962 and in the last six decades it grew in concurrence with the international programmes of geothermal study on several fronts, such as, characterizing heat flow for the major geological units; measuring the thermal conductivity of crustal rocks at ambient and elevated temperatures; arriving at the best mathematical model of thermal conductivity from modal mineralogy; calculating radiogenic heat production for the major rock formations; modeling crustal and sub-crustal thermal structure for the stable regions; calculating mantle temperature constrained with seismic velocities and mantle xenoliths; assessing geothermal energy potential regions and using geothermal observations to estimate past climate changes. Systematic heat flow, thermal conductivity, heat production, and thermal modelling carried out during this period of time led to the refinement of classical thermal models of the continental crust, i.e., from linear-step-exponential heat production model based on linear relationship, to realistic heat production models based on regional geology and regional crustal structure from geophysical studies. In many cases, such studies have also helped in the exploration of geothermal energy potential regions, geo-engineering works and deciphering past climate changes. Future research goals include to study (i) crustal and upper mantle thermal structure in the unexplored geological provinces, active tectonic zones, sedimentary basins, and hot spring areas of the Indian sub-continent, (ii) thermal structure in the adjoining oceanic regions, occurrence of potential geothermal energy resources, (iii) thermal properties of rocks at elevated temperature and their implications in refining lithospheric thermal model, (iv) linkage between geothermal and meteorological records for past climate change. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 153786173
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Heat Flow Studies in India: An Update.
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+the+Geological+Society+of+India%22">Journal of the Geological Society of India</searchLink>. Oct2021, Vol. 97 Issue 10, p1214-1225. 12p.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22Physiographic+provinces%22">Physiographic provinces</searchLink><br />*<searchLink fieldCode="DE" term="%22Geothermal+resources%22">Geothermal resources</searchLink><br />*<searchLink fieldCode="DE" term="%22Thermal+conductivity%22">Thermal conductivity</searchLink><br />*<searchLink fieldCode="DE" term="%22Power+resources%22">Power resources</searchLink><br />*<searchLink fieldCode="DE" term="%22Climate+change%22">Climate change</searchLink><br />*<searchLink fieldCode="DE" term="%22Sedimentary+basins%22">Sedimentary basins</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22India%22">India</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The geothermal study in India was initiated in 1962 and in the last six decades it grew in concurrence with the international programmes of geothermal study on several fronts, such as, characterizing heat flow for the major geological units; measuring the thermal conductivity of crustal rocks at ambient and elevated temperatures; arriving at the best mathematical model of thermal conductivity from modal mineralogy; calculating radiogenic heat production for the major rock formations; modeling crustal and sub-crustal thermal structure for the stable regions; calculating mantle temperature constrained with seismic velocities and mantle xenoliths; assessing geothermal energy potential regions and using geothermal observations to estimate past climate changes. Systematic heat flow, thermal conductivity, heat production, and thermal modelling carried out during this period of time led to the refinement of classical thermal models of the continental crust, i.e., from linear-step-exponential heat production model based on linear relationship, to realistic heat production models based on regional geology and regional crustal structure from geophysical studies. In many cases, such studies have also helped in the exploration of geothermal energy potential regions, geo-engineering works and deciphering past climate changes. Future research goals include to study (i) crustal and upper mantle thermal structure in the unexplored geological provinces, active tectonic zones, sedimentary basins, and hot spring areas of the Indian sub-continent, (ii) thermal structure in the adjoining oceanic regions, occurrence of potential geothermal energy resources, (iii) thermal properties of rocks at elevated temperature and their implications in refining lithospheric thermal model, (iv) linkage between geothermal and meteorological records for past climate change. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=153786173
RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1007/s12594-021-1851-7
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 12
        StartPage: 1214
    Subjects:
      – SubjectFull: Physiographic provinces
        Type: general
      – SubjectFull: Geothermal resources
        Type: general
      – SubjectFull: Thermal conductivity
        Type: general
      – SubjectFull: Power resources
        Type: general
      – SubjectFull: Climate change
        Type: general
      – SubjectFull: Sedimentary basins
        Type: general
      – SubjectFull: India
        Type: general
    Titles:
      – TitleFull: Heat Flow Studies in India: An Update.
        Type: main
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            NameFull: Ray, Labani
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            – D: 01
              M: 10
              Text: Oct2021
              Type: published
              Y: 2021
          Identifiers:
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              Value: 00167622
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              Value: 97
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              Value: 10
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            – TitleFull: Journal of the Geological Society of India
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