Between 2018 and 2023, the geothermal group from the Laboratório de Geotermia - Observatório Nacional (Brasil), headed by Prof. Hamza, published the International Journal of Terrestrial Heat Flow and Applied Geothermics (former url: ijthfa.com). IJTHFA provided a forum for publications of heat-flow related research dealing with recent advances in field measurement of terrestrial heat flow, regional and global geothermal data analysis, model studies of heat transfer in the Earth's interior, and practical applications of geothermal studies. The following papers and notes has been published:

Volume 6 (2023)

  • [pdf] Preface - Editorial to the sixth issue of “International Journal of Terrestrial Heat Flow and Applied Geothermics”
  • [pdf] Diurnal Variations in Vegetation Activity affecting Shallow Groundwater Flow identified by Microthermal Measurements (Maria de Fatima Santos Pinheiro, Günter Buntebarth, Martin Sauter), p. 01-10
  • [pdf] Geothermal Resources of European Continent: A Regional Assessment (Fábio Pinto Vieira, Suze Nei Pereira Guimarães, Jorge Luiz dos Santos Gomes, Valiya Mannathal Hamza), p. 11-18
  • [pdf] Use of Modified Tikhonov Regularization in Analysis of Ground Surface Temperature Variations (Fernando Silva Dias, Valiya Mannathal Hamza), p. 19-24
  • [pdf] Thermomineral Waters as Curative Properties in Yalama-Nabran Resort Zone of Azerbaijan (Sakhavat Salakhov), p. 25-28
  • [pdf] Memories of Professor Seiya Uyeda (1929 –2023) (Valiya Mannathal Hamza, Suze Nei Pereira Guimarães), p. 29-34
  • [pdf] Memories of David S. Chapman (1929 –2023) (Suze Nei Pereira Guimarães, Valiya Mannathal Hamza), p. 35-48

Volume 5 (2022)

  • [pdf] Preface - Editorial to the fifth issue of “International Journal of Terrestrial Heat Flow and Applied Geothermics”
  • [pdf] Heat Flow in the Asian Continent and Surrounding Areas (Wenjing Zhu, Shaowen Liu, Shaopeng Huang), p. 01-08
  • [pdf] Heat Flow variations in Siberia and neighboring regions: A new look (Raisa Dorofeeva, Albert Duchkov), p. 09-13
  • [pdf] The Deep South Portuguese Margin: An Attempt to Account for Heat Flow Density Variation in this Region (Maria Rosa Alves Duque), p. 14-19
  • [pdf] Global Status, Development and Prospects of Shallow and Deep Geothermal Energy (Ladislaus Rybach), p. 20-25
  • [pdf] Geothermal Resources of the Asian Continent: A regional Assessment (Valiya Mannathal Hamza, Fábio Pinto Vieira, Suze Nei Pereira Guimarães, Jorge Luiz dos Santos Gomes), p. 26-33
  • [pdf] Performance of analytical techniques (SWIR imaging, XRD, EPMA) for the identification of minerals frequently formed during natural and technological geothermal processes (Fiorenza Deon, Hans-Jürgen Förster, Frank van Ruitenbeek, Oona Appelt), p. 34-44
  • [pdf] The Evaluation of the Thermal Field under Urban Heat Island Based on Borehole Temperature Measurements (Evidence from Yekaterinburg, Russia) (Dmitry Yu. Demezhko, Anastasiia A. Gornostaeva, Bogdan D. Khatskevich), p. 45-50
  • [pdf] The importance of Sanatorium-resort complexes for medical treatments in Azerbaijan (Sakhavat Salakhov), p. 51-54
  • [pdf] Thermal state of the lithosphere in Eastern Paraguay and in Andean Domain (South American Platform) (Carlos Henrique Alexandrino, Carlos Mirez Tarrillo, André Froede Silva, Juliana de Oliveira Batista, Carlos Eduardo Cardoso Nogueira), p. 55-61
  • [pdf] Memories of Arthur Herold Lachenbruch (1925 –2021) (Barbara Lachenbruch), p. 62-70
  • [pdf] Tribute to Scientifc Contributions of Vladimir Cermak (Suze Nei Pereira Guimarães, Fábio Pinto Vieira, Jorge Luiz dos Santos Gomes), p. 71-84

Volume 4 (2021)

  • [pdf] Preface - Editorial to the fourth issue of “International Journal of Terrestrial Heat Flow and Applied Geothermics”
  • [pdf] A new database structure for the IHFC Global Heat Flow Database (Sven Fuchs, Graeme Beardsmore, Paolo Chiozzi, Orlando Miguel Espinoza-Ojeda, Gianluca Gola, Will Gosnold, Robert Harris, Sam Jennings, Shaowen Liu, Raquel Negrete-Aranda, Florian Neumann, Ben Norden, Jeffrey Poort, Dušan Rajver, Labani Ray, Maria Richards, Jared D Smith, Akiko Tanaka, Massimo Verdoya), p. 1-14
  • [pdf] Geothermal Sustainability or Heat Mining? (Ladislaus Rybach), p. 15-25
  • [pdf] Reappraisal of Heat Flow Variations in Mainland Africa (Jorge Luiz dos Santos Gomes, Fábio Pinto Vieira, Valiya Mannathal Hamza), p. 26-78
  • [pdf] Low Heat Flow at Shallow Depth Intervals: Case Studies from Belarus (Vladimir Ignatievich Zui), p. 79-84
  • [pdf] Geothermal Gradients in the Upper Amazon Basin derived from BHT data (Diego paul Barba, Roberto Barragán, Jonathan Gallardo, Alfonso Salguero), p. 85-94
  • [pdf] Effects of Near-Surface Air Temperature on Sub-Surface Geothermal Gradient and Heat Flow in Bornu-Chad Basin, Nigeria (Andrew A. Tyoh, Etim Daniel Uko, Olatunji S. Ayanninuola, Onengiyeofori A. Davies), p. 95-102
  • [pdf] Method for estimating the depth of circulation of thermal and non-thermal waters in the upper crust (Carlos Alexandrino, Fábio Pinto Vieira, Valiya M. Hamza), p. 103-109
  • [pdf] Numerical Model to Assess the State and Increase of Temperatures in Underground Mine Galleries: A Tool to Support Heat Recovery Projects (Vitor Colombo, Maria Lurdes Dinis, José Soeiro de Carvalho), p. 110-118
  • [pdf] Influence of past vegetation changes on estimates of ground surface temperature histories GSTH obtained by inversion of borehole temperature logs: Example from the Western Canadian Sedimentary Basin (Jacek A. Majorowicz, Jan Šafanda), p. 119-126
  • [pdf] Short- and long-term variations in groundwater temperature caused by changes in vegetation cover (Maria de Fatima Santos Pinheiro, Günther Buntebarth, Andrea Polle, Martin Sauter), p. 127-134
  • [pdf] Land Development and Role of Evapotranspiration in Climate Change (Trevor J. Lewis), p. 135-139
  • [pdf] Inversion results appended with estimates from vegetation changes in assessment of Ground Surface Temperatures for the Amazon Region, Brazil (Valiya Hamza, Fábio Vieira, Suze Guimaraes, Elizabeth Pimentel), p. 140-147
  • [pdf] Memories of Alan Edward Beck (1928–2020) (Valiya M. Hamza), p. 148-154

Volume 3 (2020)

  • [pdf] Preface - Editorial to the third issue of “International Journal of Terrestrial Heat Flow and Applied Geothermics”
  • [pdf] Heat flow variations in the Antarctic Continent (Suze Nei Pereira Guimarães, Fábio Pinto Vieira, Valiya Mannathal Hamza), p. 1-10
  • [pdf] Differences Between Recent Heat Flow Maps of Poland and Deep Thermo-Seismic and Tectonic Age Constraints (Jacek Andrew Majorowicz, Marek Grad), p. 11-19
  • [pdf] Geothermal Gradients and Heat Flow in Norte Basin of Uruguay (Ethel Morales, Agostina Pedro, Ricardo De León), p. 20-25
  • [pdf] Temperature Distribution and Heat Flow Density Estimation in Geothermal Areas of Absheron Peninsula (Aygun Vahid Mammadova), p. 26-31
  • [pdf] Numerical Simulations of Terrestrial Heat Flow in the Beiras Region, Mainland Portugal (Maria Rosa Alves Duque), p. 32-37
  • [pdf] Daily temperature variations at the subsurface combined with water level records in Ajameti, Georgia (Guenter Buntebarth, Tamar Jimsheladze, Genadi Kobzev, George Melikadze), p. 38-44
  • [pdf] Update of Brazilian Heat Flow Data, within the framework of a multiprong referencing system (Valiya Hamza, Fabio Vieira, Jorge Luiz dos Santos Gomes, Suze Guimaraes, Carlos Alexandrino, Antônio Gomes), p. 45-72

Volume 2 (2019)

  • [pdf] Preface - Editorial to the second issue of “International Journal of Terrestrial Heat Flow and Applied Geothermics”
  • [pdf] About the penetration of the diurnal and annual temperature variation into the subsurface (Günter Buntebarth, Maria Pinheiro, Martin Sauter), p. 1-5
  • [pdf] The history of the surface temperature at Ajameti/Georgia as extracted from long-term temperature records in the subsurface (Tamar Jimsheladze, Guenter Buntebarth, George Melikadze), p. 6-10
  • [pdf] Paleo heat flow in areas of Sedimentary Exhalative (SEDEX) deposits of Eastern Brazil (Sundaram Iyer, Valiya Hamza), p. 11-16
  • [pdf] Terrestrial heat flow versus crustal thickness and topography – European continental study (Jacek Andrew Majorowicz, Marek Grad, Marcin Polkowski), p. 17-21
  • [pdf] Thermomagnetic features of Pirapora region, central Brazil (Suze Nei Pereira Guimarães, Valiya M Hamza), p. 22-29
  • [pdf] Regions of anomalous geothermal fields in the State of Tocantins, Central Brazil (Patricia Lopes Descovi, Fábio Pinto Vieira), p. 30-36
  • [pdf] Conductive heat flow pattern of the central-northern Apennines, Italy (Massimo Verdoya, Paolo Chiozzi, Gianluca Gola, Elie El Jbeily), p. 37-45
  • [pdf] Assessment of Geothermal Resources of South America - A New Look (Fabio Vieira, Valiya Hamza), p. 46-57

Volume 1 (2018)

  • [pdf] Preface - Editorial
  • [pdf] International Heat Flow Commission: History and Accomplishments over the last fifty-five years (Vladimir Cermak, Alan Beck, Valiya Hamza), p. 1-5
  • [pdf] Global Heat Flow: New Estimates Using Digital Maps and GIS Techniques (Valiya Mannathal Hamza, Fábio Vieira), p. 6-13
  • [pdf] Temperature Gradient Measurements in Hydrothermal Areas of Georgia (Andreas Weller, Sepehr Sangin, Günter Buntebarth, George Melikadze), p. 14-17
  • [pdf] Heat Flow, Geotherms, Density and Lithosphere Thickness in SW of Iberia (South of Portugal) (Maria Rosa Alves Duque), p. 18-22
  • [pdf] Shallow and Deep Temperatures in the South-Caspian Basin (Abdulvahab Sharif Mukhtarov), p. 23-29
  • [pdf] Heat flow in Rajasthan Craton, North–Western Indian Shield and its Implications (Mohan Lal Gupta, Shadi Sharma), p. 30-34
  • [pdf] Geothermal Regime and Deep Temperatures of the Siberian Platform (Raisa Dorofeeva), p. 35-40
  • [pdf] Subsurface temperature measurements for detecting tectonic dislocations (Diego Barbero, Arianna Bucci, Paolo Chiozzi, Domenico Antonio De Luca, Maria Gabriella Forno, Marco Gattiglio, Manuela Lasagna, Massimo Verdoya), p. 41-45
  • [pdf] Terrestrial Heat Flow in Non-Thermal Ground Water Circulation Settings of Brazil (Carlos Alexandrino, Valiya Hamza), p. 46-51
  • [pdf] Deep-seated Geothermal Resources of the Parana Basin (Antonio Jorge de Lima Gomes, Jorge Luiz dos Santos Gomes), p. 52-58 *