Zobrazeno 1 - 10
of 699
pro vyhledávání: '"F. Angulo"'
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 11, Iss 1, Pp 219-225 (2011)
Seismic electric signals (SES) have been considered precursors of strong earthquakes, and, recently, their dynamics have been investigated within the Natural Time Domain (NTD) (Varotsos et al., 2004). In this paper we apply the NTD approach and the c
Externí odkaz:
https://doaj.org/article/8395558d5ea64b7c847913b08524f3d8
Autor:
A. Ramírez-Rojas, E. L. Flores-Márquez, L. Guzmán-Vargas, G. Gálvez-Coyt, L. Telesca, F. Angulo-Brown
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 8, Iss 5, Pp 1001-1007 (2008)
In this paper a statistical analysis of seismoelectric ULF signals prior to the M7.4 Guerrero-Oaxaca earthquake (EQ) occurred at the Mexican Pacific coast on 14 September 1995, has been performed. The signals were simultaneously recorded at three mon
Externí odkaz:
https://doaj.org/article/9a4ce738a583456cbdfb5227f4901290
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 8, Iss 4, Pp 855-860 (2008)
In this work we use the multiscale entropy method to analyse the variability of geo-electric time series monitored in two sites located in Mexico. In our analysis we consider a period of time from January 1995 to December 1995. We systematically calc
Externí odkaz:
https://doaj.org/article/a54a3c54c5844fd4b479e0076b92b47b
Autor:
F. Angulo-Brown, E. Albarrán-Zavala
Publikováno v:
Entropy, Vol 9, Iss 4, Pp 152-168 (2007)
In this paper we present a comparative study of nine photosynthetic pathways bymeans of their thermodynamic performance. The comparison is made by using the thermalefficiency of light-to-chemical energy conversion and the so-called ecological criteri
Externí odkaz:
https://doaj.org/article/ae2d4dec2cdd4b549d5de1edad6fa437
Autor:
A. Ramírez-Rojas, E. L. Flores-Márquez, L. Guzmán-Vargas, J. Márquez-Cruz, C. G. Pavía-Miller, F. Angulo-Brown
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 7, Iss 5, Pp 591-598 (2007)
In this work, we present a statistical study of geoelectric time series from three Mexican regions with recognized different levels of seismicity. This study is made by means of both the Higuchi's method and the detrended fluctuation analysis for the
Externí odkaz:
https://doaj.org/article/e0f1934d9b0b4c988a72be078dc50d81
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 7, Iss 5, Pp 549-556 (2007)
Recent studies related with earthquake prediction involve statistical studies of the ground electric self-potential behavior. Published results about the complexity of this kind of processes encourage us to study the statistical behavior of the groun
Externí odkaz:
https://doaj.org/article/2f250971d4ba42ae8fd8a742294abcf5
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 4, Iss 5/6, Pp 703-709 (2004)
In this work we present a spectral and multifractal study of the electric self-potential fluctuations registered in an electroseismic station located at 100km from the epicenter of an earthquake (EQ) with Mw=6.5 in the Pacific coast of Mexico. Our st
Externí odkaz:
https://doaj.org/article/c471e53b45734653b39d27aa7e4e64ca
Publikováno v:
Geofísica Internacional, Vol 37, Iss 1, Pp 29-33 (1998)
By means of the box counting method we calculate the fractal dimension D of the distribution of faults, fractures and lineaments in a region of the southern Mexican Pacific coast. The results suggest that in the spatial sense the b-value of the Guten
Externí odkaz:
https://doaj.org/article/cdf375dc7df84a51bddc07dcf72eb863
Publikováno v:
Geofísica Internacional, Vol 37, Iss 1, Pp 29-33 (1998)
Mediante el método de conteo por cajas se calcula la dimensión fractal D de una distribución de fallas, fracturas y lineamientos en una región de la costa del sur del Pacífico mexicano. Los resultados sugieren que el valor b de la ley de Gutenbe
Externí odkaz:
https://doaj.org/article/3cc4fa0441cb40f1af23645f3ad6840f
Publikováno v:
Advances in Astronomy, Vol 2012 (2012)
Classical models of the Sun suggest that the energy output in the early stage of its evolution was 30 percent less than today. In this context, radiative balance alone between The Sun and the Earth was not sufficient to explain the early presence of
Externí odkaz:
https://doaj.org/article/1ecf943c1f99492bbf1df99eaa0638f6