Now showing items 292-311 of 373

    • Seismic geohistory and differential interformational velocity analysis in the anambra basin, nigeria 

      A.S, Ekine; K. M, Onuoha,
      The methods of seismic geohistory analysis and differential interformational velocity analysis have been applied using datafrom some interpreted seismic sections within the Anambra basin. These two techniques for basin ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Seismic hazard map for the italian territory using macroseismic data 

      Gómez C., Augusto A.
      A seismic hazard map, in terms of macroseismic intensity, is proposed for the Italian continental territory and Sicily, which has a 10% probability of exceedance in 50 years. The methodology used here was first proposed ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Seismic velocity determination in gravel and sands using piezocrystals 

      Imhof, Luis Armando; Santamarina, Juan Carlos
      The exact determination of seismic waves' propagation velocities has great importance in the geotechnics due to from that it is possible to determine, among other parameters, the dynamic ones: Elasticity E, Rigidity G, ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Seismological observatory at quindio university (o.s.q.): a firm long-term step toward resolving regional seismicity 

      Monsalve Jaramillo, Hugo; Correa Montaño, Isabel Cristina; Valencia, Mina William
      El Eje Cafetero (zona central de Colombia, cultivada con café), y en particular, el departamento del Quindío es constantemente golpeada por sismos de diferentes magnitudes. Los sismos son el resultado de la compleja tectónica ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Seismotectonic-Geologic Hazards Zoning of Iran 

      Arian, Mehran
      Seismotectonic-geologic hazards zoning map of Iran is drawn based on deterministic seismic hazards evaluation using the seismicity records, structural trends, tectonic settings, fault ruptures and neotectonics activities ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Self-potential signals caused by eruptions of the galeras volcano – colombia 

      Greinwald, S.; Ortega, A.; Rugeles, A.; Ips, M., v. Seth
      The National Institute of Geology and Mining, INGEOMINAS - Colombia, and the Federal Institute for Geosciences and Natural Resources, BGR - Germany, perform since 1997 as a joint venturemulti-parameter measurements at the ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Severity Classification of a Seismic Event based on the Magnitude-Distance Ratio Using Only One Seismological Station 

      Ochoa Gutiérrez, Luis Hernán; Niño, Luis F; Vargas, Carlos A.
      Seismic event characterization is often accomplished using algorithms based only on information received at seismological stations located closest to the particular event, while ignoring historical data received at those ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Shear-wave velocity structure of Australia from Rayleigh-wave analysis 

      Corchete, Víctor
      The elastic structure beneath Australia is shown by means of S-velocity maps for depths ranging from zero to 400 km, determined by the regionalization and inversion of Rayleigh-wave dispersion. The traces of 233 earthquakes, ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Shear-wave Velocity Structure of Greenland from Rayleigh-wave Analysis 

      Corchete, V.
      The elastic structure beneath Greenland is shown by means of S-velocity maps for depths ranging from zero to 350 km, determined by the regionalization and inversion of Rayleigh-wave dispersion. The traces of 50 earthquakes, ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Simulation of near-surface layer of the colombian pacific ocean 

      Karlin, Lev; Villegas, Nancy
      Este artículo muestra los resultados obtenidos en el estudio de la estructura fina termohalina de la capa sub-superficial realizado en la Cuenca del Pacífico colombiano. Se formularon modelos matemáticos para diferentes ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Slowness surface calculation for different media using the symbolic mathematics language maple® 

      Piedrahita, Carlos; Piedrahita, Carlos; Salinas, Trino; Altamar, Hernando; Pachano, Karen
      Starting from the equation in different media, we obtain the different type of waves that can exists in such media. The evaluation of the eigenvalues and eigenvectors let us construct the slowness surfaces. In general ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Software engineering’s contribution to earthquake engineering 

      Zamora Hernandez, Abigail; González-López, Gloria Inés; González-Navarro, Felix; Ordaz-Schroeder, Mario
      Earthquakes are natural disasters which affect Mexico regularly. It is very important to obtain all information about them quickly, in order to speed up attention to population affected and if it is possible, applying ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Soil sealing in Madrid (Spain), study case of Colmenar Viejo 

      Arístegui Cortijo, Andrés; Pérez González, María Eugenia
      This work analyses soil loss over the last 150 years due to urban growth in one of the boroughs of highest environmental value around Madrid (Spain), i.e. Colmenar Viejo. The extent and patterns followed by urban extension ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Solución a un problema estático en un área con topografía abrupta usando una velocidad de reemplazamiento variable 

      Castillo López, Luis Antonio; Pedraza, Carlos
      Teniendo en cuenta que para poder obtener una buena imagen del subsuelo, es necesario que las soluciones estáticas sean las mas acertadas posibles en la etapa inicial del procesamiento, y no gastar tiempo en ensayos con ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Una solución al problema inverso en geomagnetismo 

      Díaz, Ramiro L.
      Un tema importante en geofísica, es el problema inverso en geomagnetismo. En este trabajo se propone un método para resolverlo, que consiste en hallar la solución de un sistema móvil de ecuaciones no lineales a lo largo ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Solution and type curves for the seepage model of the water-bearing coalbed with leakage recharge 

      Chen, Wangang; Yang, Yu; Sun, Hansen; Zhang, Chengwei; Wen, Qin; Li, Yanyan
      To analyze the effects of the leakage recharge of the aquifer on the initial dewatering of coalbed methane wells, the mathematical seepage model of water in the coalbed considering the aquifer leakage was established by ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Sondeos electromagnéticos inductivos: teoría, método y aplicación 

      Sanchez S., Sandra Esperanza; Briceño G., Luis Alberto
      Se estudia la teoría electromagnética para encontrar la respuesta de un medio conductor homogéneo con una intrusi6n conductora bidimensional, para el caso de una fuente unidimensional (alambre largo) y una bobina receptora. ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Space-time assessing of the earthquake potential in recent years in the Eastern Anatolia region of Turkey 

      Ozturk, Serkan
      In this study, a statistical analysis is carried out to reveal the current earthquake potential in the Eastern Anatolia region of Turkey. For this purpose, a space-time assessing based on the recent changes in Gutenberg-Richter ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Spatial distribution of sediment pollution in the Khajeh Kory River using Kriging and GIS 

      Zare, Maryam
      The aim of this research was to study of sediment pollution conditions in the river bed of Khajeh Kory, which passes from the southern border of the Caspian Sea in Astara City. To determine the pollution of river bed ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. 
    • Spatial Quality Control Method for Surface Temperature Observations Based on Multiple Elements 

      Ye, Xiaoling; Yang, Xing; Xiong, Xiong; Yang, Shuai; Chen, Yang
      Quality control can effectively improve the quality of surface meteorological observations. To ensure the stability and effectiveness of a quality control model under different terrain and climate conditions, it is necessary ...
      Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal.