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Browsing Earth Sciences Research Journal by Title
Now showing items 63-82 of 373
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Climate variability and its impacts on runoff in the kosasthaliyar sub-basin, india
Research on the effect of climate variability/climate change on rainfall-runoff modeling is limited in humid tropical regions. Climate change has implications beyond the water resources sector, such as effects on agriculture ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Clustering on dissimilarity representations for detecting mislabelled seismic signals at nevado del ruiz volcano
Classification of seismic signals at Colombian volcanoes has been carried out manually by visual inspection. In order to reduce the workload for the seismic analysts and to turn classification reliableand objective, the ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Communication regarding the geology and vertebrate palaeontology of the adamantina formation (bauru group, upper cretaceous) in campina verde, minas gerais state, brazil
Several geological events occurred onthe surface of the earth with the division of the megacontinent Gondwana, including volcanic activity involving extensive lava flows, thus locally and regionally altering the surface's ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Compaction and Collapse Characteristics of Dune Sand Stabilized with Lime-Silica Fume Mix
The purpose of this research is to assess the suitability of dune sands as construction materials. Moreover, such a goal is considered beneficial in determining appropriate methods for soil stabilization or ground improvement ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Comparative evaluation of the influencing effects of geomagnetic solar storms on earthquakes in anatolian peninsula
Earthquakes are tectonic events that take place within the fractures of the earth's crust, namely faults. Above certain scale, earthquakes can result in widespread fatalities and substantial financial loss. In addition to ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Comparison between Numerical and Analytical Analysis of the Dynamic Behavior of Circular Tunnels
Dynamic behavior of underground structures is controlled by the strain field imposed by wave propagation and by the interaction between rock mass and structures. Shear and pressure waves propagating in the plane of the ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Composition of biotite within the wushan granodiorite, jiangxi province, china: petrogenetic and metallogenetic implications
The Wushan skarn copper deposit is genetically associated with the Wushan granodiorite. In this study, we investigate the petrography and mineralogy of biotites within the Wushan granodiorite. We also determine the formation ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Compositional and petrogenetic features of schistose rocks of ibadan area, southwestern nigeria
Amphibole and quartz schist which occur in association with migmatite gneiss, granitic gneiss and Pan African Older Granitebodies around Ibadan area, southwestern Nigeria, were studied with a view to elucidate their ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Compression ratio of municipal solid waste simulation using artificial neural network and adaptive neurofuzzy system
The compression ratio of Municipal Solid Waste (MSW) is an essential parameter for evaluation of waste settlement. Since it is relatively time-consuming to determine compression ratio from oedometer tests and there exist ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Contenido
Tabla de contenido del presente númeroUniversidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Contrasting styles of lead-zinc-barium mineralization in the Lower Benue Trough, Southeastern Nigeria
In the Lower Benue Trough of Southeastern Nigeria, lead-zinc-barium mineralization occurs as widely distributed epigenetic fracture-controlled vein deposits which are restricted to Albian – Turonian sediments. Detailed ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Contribution of topographic and penetrometric measurements to a site characterization, case of the kekem landslide, national road n°5 (western cameroon)
Atopographical survey and a dynamic cone penetrometer testing (DCPT) were conducted over the Kekemlandslide area.The aim of the work was to unveil new topographic features of the site, and with the penetrometer soundings ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Contribution to evaluation of technical seismicity effect on buildings - case study
The study of seismic loading on buildings and structures caused by technical seismicity has intensified due to increase in loads. Loads are of interest not only for existing structures but they must be checked as partof ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Conversion of 3d seismic attributes to reservoir hydraulic flow units using a neural network approach: an example from the kangan and dalan carbonate reservoirs, the world's largest non-associated gas reservoirs, near the persian gulf
This study presents an intelligent model based on probabilistic neural networks (PNN) to produce a quantitative formulation between seismic attributes and hydraulic flow units (HFUs). Neural networks have been used for the ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Corrigendum
Presentamos excusas a nuestros lectores y al antropólogo Javier Andrés Sandoval Andrade puesto que en el Vol 15 No 2 del 2011 de la revista Earth Science research Journal (ESRJ) se publicó el articulotitulado "Quaternary ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Critical undrained shear strength of sand-silt mixtures under monotonic loading
This study uses experimental triaxial tests with monotonic loading to develop empirical relationships to estimate undrained critical shear strength. The effect of the fines content on undrained shear strength is analyzed ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Cross-section generation of various geo-scientific features without contour digitization using a visual c++ based software application ‘vigat 2005’
Cross-section can be described as a two dimensional dataset where the horizontal distances are represented on the x-axis and the depth on the y-axis. A cross-section is a window into the subsurface.This work presents the ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Crs seismic processing of a geological complex area
We applied the NMO and CRS (Common Reflector Surface) approaches to a complex geological area in order to compare their performances for obtaining enhanced images. Unlike NMO, CRS does not depend on a previous time velocity ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Crustal thickness variations and seismicity of northwestern south america
Any uncompensated mass of the northern Andes Mountains is presumably under pressure to adjust within the Earth to its ideal state of isostatic equilibrium. Isostasy is the ideal state that anyuncompensated mass seeks to ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Csem imaging of the near surface dynamics and its impact for foundation stability at quarter 27, 15th of may city, helwan, egypt
In the present work, we involve the Control Source Electromagnetic (CSEM) Technique to image the dynamic migration center of the near surface fractures, fissures, and cracks in a new dwelling area at 15th of May city close ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal.
