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Browsing Earth Sciences Research Journal by Title
Now showing items 289-308 of 373
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Sand dunes of the Gaza Strip (southwestern Palestine): morphology, textural characteristics and associated environmental impacts
Sand dunes are wide spread in the Gaza Strip and are present in its northern, central and southern regions. Thirty sand samples were collected at seven locations along the middle region of the Strip. The coordinates for ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Scanning electron microscope description of the afowo oil sand deposits in south-western nigeria
The Afowo oil sand deposits in parts of Southwestern Nigeria were described by scanning electron microscope for characterizing the reservoir sands, based on their clay content. Twelve core oil sand samples were collected, ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Seasonal Hydrological and Meteorological Time Series
Time series models are often used in hydrology and meteorology studies to model streamflows series in order to make forecasting and generate synthetic series which are inputs for the analysis of complex water resources ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Seismic geohistory and differential interformational velocity analysis in the anambra basin, nigeria
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
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
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
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
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
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
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
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
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
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®
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
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
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
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
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
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
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.
