Dr. Theofilos Toulkeridis
My Social Links

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

Share this Profile

Area of Interest:

Earth Science and Geography
100%
Geography
62%
Geology
90%
Mineralogy
75%
Natural Hazards
55%

Research Publications in Numbers

Books
0
Chapters
0
Articles
0
Abstracts
0

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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    Direct Link  |  
  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.
    Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  61. Clauer, N., S. Chaudhuri, T. Toulkeridis and G. Blanc, 2000. Fluctuations of Caspian sea level: Beyond climatic variations? Geology, 28: 1015-1018.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.
    CrossRef  |  Direct Link  |  
  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.