Dr. Theofilos Toulkeridis

Professor
University of the Armed Forces-ESPE, Ecuador

Highest Degree
Ph.D. in Geography from University of the Armed Forces-ESPE, Ecuador

My URL
https://livedna.org/593.29648

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Area of Interest:

Earth Science and Geography
Geography
Geology
Mineralogy
Natural Hazards

Selected Publications

  1. Quiroz, D., B. Guanochanga, W. Fuertes, D. Benítez, J. Torres, F. Tapia and T. Toulkeridis, 2020. Visual Analytics for the Reduction of Air Pollution on Real-Time Data Derived from WSN. In: Developments and Advances in Defense and Security, Rocha, A. and R. Pereira, (Eds). Springer, Singapore, ISBN: 978-981-13-9154-5, pp: 109-119.

  2. Toulkeridis, T., L. Porras, A. Tierra, K. Toulkeridis-Estrella and D. Cisneros et al., 2019. Two independent real-time precursors of the 7.8 Mw earthquake in Ecuador based on radioactive and geodetic processes—Powerful tools for an early warning system. J. Geodynam., 126: 12-22.
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  3. Suhr, N., Y. Rojas-Agramonte, D.M. Chew, A.J. Pinto, D. Villagomez-Díaz, T. Toulkeridis and R. Mertz-Kraus, 2019. Detrital-zircon geochronology and provenance of the El Oro Metamorphic Complex, Ecuador: Geodynamic implications for the evolution of the western Gondwana margin. J. South Am. Earth Sci., 90: 520-539.
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  4. Reyes, F., W. Fuertes, F. Tapia, T. Toulkeridis, H. Aules and E. Perez, 2019. A BI Solution to Identify Vulnerabilities and Detect Real-Time Cyber-Attacks for an Academic CSIRT. In: Intelligent Computing. SAI 2018. Advances in Intelligent Systems and Computing, Arai, K., S. Kapoor and R. Bhatia, (Eds.). Springer, Cham, ISBN: 978-3-030-01176-5, pp: 1135-1153.

  5. Guanochanga, B., R. Cachipuendo, W. Fuertes, S. Salvador and D. Benitez et al., 2019. Real-time air pollution monitoring systems using wireless sensor networks connected in a cloud-computing, wrapped up web services. Adv. Intell. Syst Comput., 880: 171-184.

  6. Constantin, S., T. Toulkeridis, O.T. Moldovan, M. Villacís and A. Addison, 2019. Caves and karst of Ecuador – state-of-the-art and research perspectives. Phy. Geography, 40: 28-51.
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  7. Toulkeridis, T., F. Mato, K. Toulkeridis-Estrella, J.C.P. Salinas, S. Tapia and W. Fuertes, 2018. Real-time radioactive precursor of the april 16, 2016 mw 7.8 earthquake and tsunami in ecuador. Sci. Tsun. Hazards, 37: 34-48.
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  8. Sandoval-Erazo, W., T. Toulkeridis, F. Rodriguez-Espinosa and M.M. Mora, 2018. Velocity and time of concentration of a basin – A renewed approach applied in the rio grande basin, Ecuador. IOP Conf. Ser. Earth Environ. Sci., Vol. 191. 10.3897/subtbiol.27.27098.
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  9. Sandoval-Erazo, W., T. Toulkeridis, A. Morales-Sanchez and M.M. Mora, 2018. Sedimentological study of the reservoir of the manduriacu hydroelectric project, northern Ecuador. IOP Conf. Ser. Earth Environ. Sci., Vol. 191. 10.1088/1755-1315/191/1/012119.
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  10. Ron, M., M. Bonilla, W. Fuertes, J. Diaz and T. Toulkeridis, 2018. Applicability of Cybersecurity Standards in Ecuador -A Field Exploration. In: Developments and Advances in Defense and Security, Rocha, A. and T. Guarda, (Eds). Springer, Cham, ISBN: 978-3-319-78604-9, PP: 27-40.

  11. Navas, L., P. Caiza and T. Toulkeridis, 2018. An evaluated comparison between the molecule and steel framing construction systems – Implications for the seismic vulnerable Ecuador. Malaysian Construct. Res. J., 26: 87-109.

  12. Matheus-Medina, A.S., T. Toulkeridis, O. Padilla-Almeida, M. Cruz-D ́Howitt and K. Chunga, 2018. Evaluation of the tsunami vulnerability in the coastal ecuadorian tourist centers of the peninsulas of bahia de caraquez and salinas. Sci. Tsunami Hazards, 38: 176-209.

  13. Espinasa, L., J. Robinson, D. Soares, G. Hoese, T. Toulkeridis and R.I.I.I. Toomey, 2018. Troglomorphic features of Astroblepus pholeter, a cavefish from Ecuador, and possible introgressive hybridization. Subterran. Biol., 27: 17-29.
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  14. Espinasa, L., G. Hoese, T. Toulkeridis and R. Toomey, 2018. Corroboration that the Mc1r Gly/Ser mutation correlates with the phenotypic expression of pigmentation in Astroblepus. Dev. Biol., 441: 311-312.

  15. Chunga, K., F. Mato, M. Mulas and F. Ochoa-Cornejo, 2018. Characterization of seismogenic crustal faults in the Gulf of Guayaquil, Ecuador. Andean Geol., 46: 66-81.
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  16. Celorio-Saltos, J.C., J.M. García-Arias, A.B. Guerra-Luque, G. Barragan-Aroca and T. Toulkeridis, 2018. Vulnerability analysis based on tsunami hazards in Crucita, central coastal of Ecuador. Sci. Tsunami Hazards, 37: 225-263.

  17. Caiza, M., C. Gonzalez, T. Toulkeridis and H. Bonifaz, 2018. Physical properties of pumice and its behavior as a coarse aggregate in concrete. Malaysian Const. Res. J., 25: 85-95.

  18. Bustamante, F., W. Fuertes, T. Toulkeridis and M. Ron, 2018. Situational status of global cybersecurity and cyber defense according to global indicators. Adaptation of a model for Ecuador. Smart Innov. Syst. Technol., 94: 12-26.

  19. Arce, E., W. Sandoval, T. Toulkeridis, D. Carrera and M.J.M. Mora, 2018. Ecological flows for Ecuadorian basins determined by the slope method of the mass-curve. IOP Conf. Ser. Earth Environ. Sci., Vol. 191. 10.1088/1755-1315/191/1/012118.
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  20. Aguilera, C., M. Viteri, R. Seqqat, L. Ayala, T. Toulkeridis, A. Ruano and M. Torres, 2018. Biological impact of exposure to extremely fine-grained volcanic ash. J. Nanotechnol., 10.1155/2018/7543859.
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  21. Valladares, P., W. Fuertes, F. Tapia, T. Toulkeridis and E. Perez, 2017. Dimensional data model for early alerts of malicious activities in a CSIRT. Simulation Ser., 49: 74-81.

  22. Toulkeridis, T., H. Parra, F. Mato, M.C. D'Howitt and W. Sandoval et al., 2017. Contrasting results of potential tsunami hazards in muisne, central coast of ecuador. Sci. Tsunami Hazard, 36: 13-40.
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  23. Toulkeridis, T. and I. Zach, 2017. Wind directions of volcanic ash-charged clouds in ecuador-implications for the public and flight safety. Geomatics Natural Hazards Risks, 8: 242-256.

  24. Rodriguez, F., T. Toulkeridis, W. Sandoval, O. Padilla and F. Mato, 2017. Economic risk assessment of Cotopaxi volcano, ecuador, in case of a future lahar emplacement. Natural Hazards, 85: 605-618.
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  25. Padilla, O., P. Rosas, W. Moreno and T. Toulkeridis, 2017. Modeling of the ecological niches of the Anopheles spp in Ecuador by the use of geo-informatic tools. Spatial Spatio-Temporal Epidemiol., 21: 1-11.
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  26. Misi, A., S.S. Iyer, C.E.S. Coelho, C.C. Tassinari and W.J. Franca-Rocha et al., 2017. A metallogenic evolution model for the lead-zinc deposits of the meso and Neoproterozoic sedimentary basins of the Sao Francisco Craton, Bahia and Minas Gerais, Brazil. Rev. Brasil. Geociencias, 30: 302-305.
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  27. Mato, F. and T. Toulkeridis, 2017. The missing link in El Nino's phenomenon generation. Sci. Tsunami Hazards, 36: 128-144.

  28. Luna, M.P., A. Staller, T. Toulkeridis and H. Parra, 2017. Methodological support for the calculation of the velocity model for continental ecuador. Open Geosci., 9: 719-734.

  29. Espinosa, R.F., T. Toulkeridis, S.R. Martinez, J.C. Giron and A.T. Quispe et al., 2017. Economic evaluation of recovering a natural protection with concurrent relocation of the threatened public of tsunami hazards in central coastal Ecuador. Sci. Tsunami Hazards, 36: 293-306.
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  30. Chunga, K., T. Toulkeridis, X. Vera-Grunauer, M. Gutierrez, N. Cahuana And A. Alvarez, 2017. A review of earthquakes and tsunami records and characterization of capable faults on the northwestern coast of ecuador. Sci. Tsunami Hazards, 36: 100-127.

  31. Carrera-Villacres, D.V., I.C. Robalino, F.F. Rodriguez, W.R. Sandoval, D.L. Hidalgo and T. Toulkeridis, 2017. An innovative fog catcher system applied in the Andean communities of Ecuador. Transact. ASABE, 60: 1917-1923.

  32. Bustamante, F., W. Fuertes, P. Diaz and T. Toulkeridis, 2017. Methodology for management of information security in industrial control systems: A proof of Concept aligned with enterprise objectives. Adv. Sci. Technol. Eng. Syst. J., 2: 88-99.
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  33. Vaca, A.V., C.R. Arroyo, A. Debut, T. Toulkeridis and L. Cumbal et al., 2016. Characterization of fine-grained material ejected by the cotopaxi volcano employing X-ray diffraction and electron diffraction scattering techniques. Biol. Med., Vol. 8. 10.4172/0974-8369.1000280.
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  34. Toulkeridis, T., F. Rodriguez, N.A. Jimenez, D.S. Baile and R.S. Martinez et al., 2016. Causes and consequences of the sinkhole at El Trebol of Quito, Ecuador-Implications for economic damage and risk assessment. Natural Hazards Earth Sci. Syst., 16: 2031-2041.

  35. Toulkeridis, T., 2016. Unexpected results of a seismic hazard evaluation applied to a modern hydroelectric plant in central Ecuador. J. Struct. Eng., 43: 373-380.

  36. Rodriguez, F., M.C. D´Howitt, T. Toulkeridis, R. Salazar, G.E.R. Romero, V.A.R. Moya and O. Padilla, 2016. The economic evaluation and significance of an early relocation versus complete destruction by a potential tsunami of a coastal city in Ecuador. Sci. Tsunami Hazards, 35: 18-35.

  37. Medina, A.S.M., M.C. D'Howitt, O.P. Almeida, T. Toulkeridis and A.G. Haro, 2016. Enhanced vertical evacuation application with geomatic tools for tsunamis in salinas, ecuador. Sci. Tsunami Hazards, 35: 189-213.

  38. Martin-Solano, S., T. Toulkeridis, A. Addison and W.E. Pozo-Rivera, 2016. Predation of Desmodus rotundus geoffroy, 1810 (Phyllostomidae, Chiroptera) by Epicrates cenchria (Linnaeus, 1758) (Boidae, Reptilia) in an Ecuadorian cave. Subter. Biol., 19: 41-50.

  39. Katz, A.D., S.J. Taylor, F.N. Soto-Adames, A. Addison, G.B. Hoese, M.R. Sutton and T. Toulkeridis, 2016. New records and new species of springtails (Collembola: Entomobryidae, Paronellidae) from lava tubes of the Galapagos islands (Ecuador). Subter. Biol., 17: 77-120.

  40. Jorda-Bordehore, L., T. Toulkeridis, P.L. Romero-Crespo, R. Jorda-Bordehore and I. Garcia-Garizabal, 2016. Stability assessment of volcanic lava tubes in the Galapagos using engineering rock mass classifications and an empirical approach. Int. J. Rock Mech. Mining Sci., 89: 55-67.
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  41. Toulkeridis, T., N. Clauer, A. Kroner and W. Todt, 2015. Mineralogy, geochemistry and isotopic dating of shales from the Barberton Greenstone Belt, South Africa: Provenance and tectonic implications. S. Afr. J. Geol., 118: 389-410.

  42. Toulkeridis, T., D.S. Baile, F. Rodriguez, R.S. Martinez, N.A. Jimenez and D.C. Freyre, 2015. Subsidence at the "trébol" of quito, ecuador: An indicator for future disasters? Proc. Int. Assoc. Hydrol. Sci., 372: 151-155.

  43. Toulkeridis, T., C.R. Arroyo, M.C. D’Howitt, A. Debut and A.V. Vaca et al., 2015. Evaluation of the initial stage of the reactivated Cotopaxi volcano-analysis of the first ejected fine-grained material. Natural Hazards Earth Syst. Sci. Discussions, 3: 6947-6976.

  44. Espinasa, L., R. Garvey, J. Espinasa, C.A. Fratto, S. Taylor, T. Toulkeridis and A. Addison, 2015. Cave dwelling Onychophora from a Lava Tube in the Galapagos: 16s rRNA sequence and relationships. Subterranean Biol., 15: 1-10.

  45. Chunga, K. and T. Toulkeridis, 2014. First evidence of paleo-tsunami deposits of a major historic event in ecuador. Sci. Tsunami Hazards, 33: 55-69.
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  46. Halama, R., D. Garbe-Schonberg, I.P. Savov, V. Schenk and T. Toulkeridis, 2013. On the occurrence of vesuvianite-bearing dikes in HP-metamorphosed oceanic lithosphere and the role of vesuvianite during subduction. Eur. J. Mineral, 25: 193-219.

  47. Padron, E., P.A. Hernandez, N.M. Perez, T. Toulkeridis, G. Melian, J. Barrancos, G. Virgili, H. Sumino and K. Notsu, 2012. Fumarole/plume and diffuse CO2 emission from Sierra Negra volcano, Galapagos archipelago. Bull. Volcanol., 74: 1509-1519.

  48. Massonne, H.J. and T. Toulkeridis, 2012. Widespread relics of high-pressure metamorphism confirm major terrane accretion in Ecuador: A new example from the Northern Andes. Int. Geol. Rev., 54: 67-80.

  49. Toulkeridis, T., B. Peucker-Ehrenbrink, M. Schidlowski, A. Kroner, W. Todt and N. Clauer, 2010. A chemical and isotopic study of Archaean magnesite, Barberton Greenstone Belt, South Africa. J. Geol. Soc. London, 167: 943-952.

  50. Ridolfi, F., M. Puerini, A. Renzulli, M. Menna and T. Toulkeridis, 2008. The magmatic feeding system of El Reventador volcano (Sub-Andean zone, Ecuador) constrained by texture, mineralogy and thermobarometry of the 2002 erupted products. J. Volcanol. Geother. Res., 176: 94-106.
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  51. Padron, E., P.A. Hernandez, T. Toulkeridis, N.M. Perez and R. Marrero et al., 2008. Diffuse CO2 emission rate from Pululahua and the lake-filled Cuicocha calderas, Ecuador. J. Volcanol. Geother. Res., 176: 163-169.
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  52. Buchwaldt, R., T. Toulkeridis, K.E. Ucakuwun and W. Todt, 2008. Geochronologic evolution of middle-Proterozoic granites from SW Uganda and associated mineralization (Be, Sn, Au). J. Afr. Earth Sci., 51: 4-20.

  53. Toulkeridis, T., R. Buchwaldt and A. Addison, 2007. When volcanoes threaten, scientists warn. Geotimes, 52: 36-39.

  54. Clauer, N., S. Chaudhuri, M.D. Lewan and T. Toulkeridis, 2006. Effect of thermal maturation on the K-Ar, Rb-Sr and REE systematics of an organic-rich New Albany Shale as determined by hydrous pyrolysis. Chem. Geol., 234: 169-177.
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  55. Teklay, M., Y. Asmerom and T. Toulkeridis, 2005. Geochemical and Sr-Nd isotope ratios in Cenozoic basalts from Eritrea: Evidence for temporal evolution from low-Ti tholeiitic to high-Ti alkaline basalts in Afro-Arabian continental flood Basalt province. Periodico Mineral., 74: 167-182.

  56. Clauer, N., N. Liewig, M.C. Pierret and T. Toulkeridis, 2003. Crystallization conditions of fundamental particles from mixed-layer illite-smectite of bentonites based on isotopic data (K-Ar, Rb-Sr and δ18O). Clays Clay Minerals, 51: 664-674.
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  57. Ring, U., A. Kroner, R. Buchwaldt, T. Toulkeridis and P.W. Layer, 2002. Shear-zone patterns and eclogite-facies metamorphism in the Mozambique belt of northern Malawi, East-Central Africa: Implications for the assembly of Gondwana. Precambrian Res., 116: 19-56.
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  58. Vitali, F., G. Blanc, T. Toulkeridis and P. Stille, 2000. Silicate diagenesis in deep-sea sediments from the Tonga forearc (SW Pacific): A strontium and Rare Earth Elements signature. Oceanol. Acta, 23: 281-296.
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  59. Nasraoui, M., T. Toulkeridis, N. Clauer and E. Bilal, 2000. Differentiated hydrothermal and meteoric alterations of the Lueshe carbonatite complex (Democratic Republic of Congo) identified by a REE study combined with a sequential acid-leaching experiment. Chem. Geol., 165: 109-132.
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  60. Monna, F., N. Clauer, T. Toulkeridis and J.R. Lancelot, 2000. Influence of anthropogenic activity on the lead isotope signature of Thau Lake sediments (Southern France): Origin and temporal evolution. Applied Geochem., 15: 1291-1305.
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  61. Clauer, N., S. Chaudhuri, T. Toulkeridis and G. Blanc, 2000. Fluctuations of Caspian sea level: Beyond climatic variations? Geology, 28: 1015-1018.
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  62. Zhao, B., N. Clauer, L.J. Robb, H. Zwingmann, T. Toulkeridis and M.F. Meyer, 1999. K-Ar dating of micas from the Witwatersrand Basin, South Africa: Timing of post-depositional alteration and gold mineralization. Mineral. Petrol., 66: 149-170.

  63. Toulkeridis, T., N. Clauer, A. Kroner, T. Reimer and W. Todt, 1999. Characterization, provenance and tectonic setting of fig tree greywackes from the Archaean Barberton greenstone belt, South Africa. Sediment. Geol., 124: 113-129.
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  64. Ring, U., A. Kroner, P. Layer, R. Buchwaldt and T. Toulkeridis, 1999. Deformed A-type granites in Northern Malawi, East-central Africa: Pre-or syntectonic? J. Geol. Soc., 156: 695-714.
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  65. Chahi, A., N. Clauer, T. Toulkeridis and M. Bouabdelli, 1999. Rare-earth elements as tracers of the genetic relationship between smectite and palygorskite in marine phosphorites. Clay Minerals, 34: 419-427.
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  66. Buchwaldt, R., T. Toulkeridis, M. Babinski, C.M. Noce, M.M. Neto and C.M. Hercos, 1999. Age determination and age related provenance analysis of the proterozoic glaciation in central Eastern Brazil. An. Acad. Ci., 71: 527-548.

  67. Toulkeridis, T., S.L. Goldstein, N. Clauer, A. Kroner, W. Todt and M. Schidlowski, 1998. Sm-Nd, Rb-Sr and Pb-Pb dating of silicic carbonates from the early Archaean Barberton Greenstone Belt, South Africa: Evidence for post-depositional isotopic resetting at low temperature. Precambrian Res., 92: 129-144.
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  68. Toulkeridis, T., P. Podwojewski and N. Clauer, 1998. Tracing the source of gypsum in New Caledonian soils by REE contents and S-Sr isotopic compositions. Chem. Geol., 145: 61-71.
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  69. Toulkeridis, T., N. Clauer, S. Chaudhuri and S.L. Goldstein, 1998. Multimethod (K-Ar, Rb-Sr, Sm-Nd) dating of bentonite minerals from the Eastern United states. Basin Res., 10: 261-270.
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  70. Clauer, N., G.M. Zuppi, G. Blanc, T. Toulkeridis and F. Gasse, 1998. Chemical and isotopic compositions of Caspian sea and tributary water from the Makachkala region (Russia): First data on the functioning of a particular endorheic system (preliminary information on the chemical and isotopic compositions from the Caspian sea its tributaries in the Makachkala region (Russia)). C.R. Acad. Sci. Paris, Earth Planetary Sci., 327: 17-24.

  71. Ring, U., A. Kroner and T. Toulkeridis, 1997. Palaeoproterozoic granulite-facies metamorphism and granitoid intrusions in the Ubendian-Usagaran Orogen of Northern Malawi, East-central Africa. Precambrian Res., 85: 27-51.
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  72. Clauer, N., F. Weber, F. Gauthier-Lafaye, T. Toulkeridis and J.P. Sizun, 1997. Mineralogical, geochemical (REE), and isotopic (K-Ar, Rb-Sr, δ18O) evolution of the clay minerals from faulted, carbonate-rich, passive paleomargin of Southeastern Massif Central, France. J. Sediment. Res., 67: 923-934.
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  73. Toulkeridis, T., N. Clauer and A. Kr, 1996. Chemical variations in clay minerals of the Archaean Barberton greenstone belt (South Africa). Precambrian Res., 79: 195-207.
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  74. Toulkeridis, T., S.L. Goldstein, N. Clauer, A. Kroner and D.R. Lowe, 1994. Sm-Nd dating of Fig tree clay minerals of the Barberton greenstone belt, South Africa. Geology, 22: 199-202.
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  75. Heubeck, C., J.I. Wendt, T. Toulkeridis, A. Kröner and D.R. Lowe, 1993. Timing of deformation of the early Archean Barberton Greenstone Belt, South Africa: Constraints from zircon dating of the Salisbury Kop Pluton. S. Afr. J. Geol., 96: 1-8.
Member since July, 2019