SPACE-TIME VARIATION OF FREQUENCY-MAGNITUDE DISTRIBUTION IN THE VRANCEA SEISMIC REGION DURING 2000-2015 TIME INTERVAL

Aki K., Maximum likelihood estimate of b in the formula log N=a-bM and its confidence limits, Bull. Earthq. Res. Inst. Tokyo Univ., vol. 43, pp237–239, 1965.

Mogi K., Earthquakes and fractures. Tectonophysics 1967, 5(35–55):2005.

Pacheco J. F., Scholz C. H., and Sykes L. R., Changes in frequency-size relationship from small to large earthquakes, Nature, 355, 71-73. 1992.

Popa M., Radulian M., Ghica D., Neagoe C. and Nastase E., Romanian Seismi c Network since 1980 to the present, Nonlinear Mathematical Physics and Natural Hazards, Springer Proceedings in Physics 163, DOI: 10.1007/978-3-319 -14328-6_9, Chapter 9, 2014.

Popescu E., Grecu B., Popa M., Rizescu M., Radulian M., Seismic source properties: indications of lithosphere irregular structure on depth beneath the Vrancea region, Journal,Romanian Reports in Physics,Volume 55, Number 3, P. 303- 321, 2003 16th International Scientific GeoConference SGEM2016 www.sgem.org 16th International Multidisciplinary Scientific GeoConference SGEM 2016

Radulian M., Mândrescu M.N., Panza G.F., Popescu E. and Utale A., Characterization of seismogenic zones of Romania, Pure Appl. Geophys., 157, 57 –77. 2000.

Rogozea M., Popa M., Radulian M., Detailed seismicity analysis in the Vrancea area and implications for the seismic cycle evolution, Journal, Romanian Reports in Physics, Vol. 61, No. 3, P. 740–747, 2009.

Rydelek P. A. and Sacks I. S., Testing the completeness of earthquake catalogues and the hypothesis of self-similarity, Nature, vol 337, pp 251-253, 1989

Scholz C.H., The frequency-magnitude relation of microfracturing in rock and its relation to earthquakes. Bulletin of the Seismological Society of America,vol 58, pp 399-415, 1968

Trifu C.I., Radulian M., Asperity distribution and percolation as fundamentals of earthquake cycle, Journal , Physics of the Earth and Planetary Interiors, 58, 277-288, 1989.

Trifu C.I., Radulian M., Frequency- magnitude distribution of earthquakes in Vrancea: relevance for a discrete model. J. Geophys. Res. 96, pp 4301–4311, 1991.

Wiemer S., Wyss M., Mapping the frequency ‐magnitude distribution in asperities: An improved technique to calculate recurrence times , Journal of Geophysical Research: Solid Earth 102 (B7), 15, 115-15, 128, 1977.

Wiemer S., Wyss M., Minimum magnitude of complete reporting in earthquake catalogs: examples from Alaska, the Western United States, and Japan, Bull. Seism. Soc. Am. 90, pp 859–869, 2000

Wiemer S., A software package to analyze seismicity: ZMAP, Seismol. Res. Lett., 72, pp 374–383, 2001. 16th International Scientific GeoConference SGEM2016 www.sgem.org

Aki K., Maximum likelihood estimate of b in the formula log N=a-bM and its confidence limits, Bull. Earthq. Res. Inst. Tokyo Univ., vol. 43, pp237–239, 1965.

Mogi K., Earthquakes and fractures. Tectonophysics 1967, 5(35–55):2005.

Pacheco J. F., Scholz C. H., and Sykes L. R., Changes in frequency-size relationship from small to large earthquakes, Nature, 355, 71-73. 1992.

Popa M., Radulian M., Ghica D., Neagoe C. and Nastase E., Romanian Seismi c Network since 1980 to the present, Nonlinear Mathematical Physics and Natural Hazards, Springer Proceedings in Physics 163, DOI: 10.1007/978-3-319 -14328-6_9, Chapter 9, 2014.

Popescu E., Grecu B., Popa M., Rizescu M., Radulian M., Seismic source properties: indications of lithosphere irregular structure on depth beneath the Vrancea region, Journal,Romanian Reports in Physics,Volume 55, Number 3, P. 303- 321, 2003 16th International Scientific GeoConference SGEM2016 www.sgem.org 16th International Multidisciplinary Scientific GeoConference SGEM 2016

Radulian M., Mândrescu M.N., Panza G.F., Popescu E. and Utale A., Characterization of seismogenic zones of Romania, Pure Appl. Geophys., 157, 57 –77. 2000.

Rogozea M., Popa M., Radulian M., Detailed seismicity analysis in the Vrancea area and implications for the seismic cycle evolution, Journal, Romanian Reports in Physics, Vol. 61, No. 3, P. 740–747, 2009.

Rydelek P. A. and Sacks I. S., Testing the completeness of earthquake catalogues and the hypothesis of self-similarity, Nature, vol 337, pp 251-253, 1989

Scholz C.H., The frequency-magnitude relation of microfracturing in rock and its relation to earthquakes. Bulletin of the Seismological Society of America,vol 58, pp 399-415, 1968

Trifu C.I., Radulian M., Asperity distribution and percolation as fundamentals of earthquake cycle, Journal , Physics of the Earth and Planetary Interiors, 58, 277-288, 1989.

Trifu C.I., Radulian M., Frequency- magnitude distribution of earthquakes in Vrancea: relevance for a discrete model. J. Geophys. Res. 96, pp 4301–4311, 1991.

Wiemer S., Wyss M., Mapping the frequency ‐magnitude distribution in asperities: An improved technique to calculate recurrence times , Journal of Geophysical Research: Solid Earth 102 (B7), 15, 115-15, 128, 1977.

Wiemer S., Wyss M., Minimum magnitude of complete reporting in earthquake catalogs: examples from Alaska, the Western United States, and Japan, Bull. Seism. Soc. Am. 90, pp 859–869, 2000

Wiemer S., A software package to analyze seismicity: ZMAP, Seismol. Res. Lett., 72, pp 374–383, 2001. 16th International Scientific GeoConference SGEM2016 www.sgem.org