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Browsing Earth Sciences Research Journal by Title
Now showing items 322-341 of 373
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La temperatura del interior de la tierra
EI problema de definir la temperatura del interior de la Tierra, se analiza a partir de las observaciones del flujo térmico y la aceptación de procesos de convección en el manto.Análisis comparativos de perfiles térmicos, ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Temporal variation of coda-q at galeras volcano, colombia
The Temporal variation of coda-Q was analyzed for Galeras volcano, located in the Andes of southwestern Colombia. The Q -1 value was calculated using the Single Back Scattering (SBS) model working with seismograms filtered ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Temporal-spatial distribution of oceanic vertical deflections determined by TOPEX/Poseidon and Jason-1/2 missions
Deflections of the Vertical (DOV) are essential data in the geodetic observation reduce, the earth gravity field and geoid model refinement, and the mass earth change. The meridional and prime vertical components of global ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
La teoría del rayo paraxial en la sismica de pozo: aproximación de segundo orden en los tiempos de tránsito
Utilizando la aproximación del rayo paraxial de la llamada óptica geométrica se encontró un conjunto de expresiones que caracterizan los eventos de reflexión que han sido registrados en detectores situados dentro de un ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Test study on the influences of dynamic stress and load history to the dynamic properties of the remolded red clay
The dynamic properties of subgrade materials are critical factors affecting stability within the traffic engineering discipline. Remolded red clays are frequently used as subgrade filling materials, however, to date, a ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
The 1985 méxico earthquake
Se incluye una revisión bibliográfica junto con la descripción de varios aspectos relacionados con el terremoto de Michoacan, México (Ms = 8.1), el cual comprendió tres eventos. Un evento premonitorio ocurrió el 28 de mayo ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
The assessment of slope stability and rock excavatability in a limestone quarry
The aim of this study is to evaluate the stability and excavatability of newly stripped rock slopes (slope 1 (SN–1), slope 2 (SN–2), and slope 3 (SN–3)) in a limestone quarry. These are new production sites with comparable ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
The camaquã basin modelling : tectonostratigraphy through integration of geophysical (gravimetry, well log) and remote sensing data
A tectonostratigraphic study of the Camaquã Basin, formed by Neoproterozoic to Eopaleozoic volcano-sedimentary units, is herein presented. Based on lineaments obtained through LANDSATTM images and geophysical methods, four ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
The effects of ex-situ oil shale mining on groundwater resources in Siwaqa area, southern Jordan, using DRASTIC index and hydrochemical water assessment
Energy resources in addition to water resources are the most limited resources in Jordan, being one of the fourth poorest countries in water resources, and limitation of surface water resources put huge pressure on groundwater ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
The geochemistry of claystone-shale deposits from the maastritchian patti formation, southern bida basin, nigeria
Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
The geochemistry of lignite from the neogene ogwashi-asaba formation, niger delta basin, southern nigeria
Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
The geological and geodynamic condition on the formation of the Dabashan thrust nappe structure: Based on FLAC numerical modelling
The Dabashan thrust nappe structure at the southern margin of the Qinling orogenic belt suffered at least two stages of evolution which are Late Triassic plate subduction collisional orogeny between North China block, ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
The geomorphic history of the ainoura plain, kyushu, japan, based on excavation of the monzen ruins
The complex coastline of north-western Kyushu, Japan, consisting of cliffs, steep-sided inlets and archipelagos, has resulted from subsidence in mountainous terrain; the region's populated river valleys,having narrow ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
The impacts of alkaline mine drainage on ba, cr, ni, pb and zn concentration in the water resources of the takht coal mine, iran
The release of heavy metals into the environment represents one of the most important environmental effects involved in extracting coal; it needs to be studied more fully. The present research investigatedthe effects of ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
The Influence of Eco-water Retrieved by Quantitative Remote Sensing on Runoff in Upper Minjiang River Basin
Remote sensing quantitative retrieval of ecological water (eco-water) has been foundational in systemic and quantitative research for water resources. Eco-water resource levels indicate conservation ability for the eco-water ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
The maximum effect of deep lakes on temperature profiles – determination of the geothermal gradient
Understanding the climate change processes on the basis of geothermal observations in boreholes is an important and at the same time high-intricate problem. Many non-climatic effects could cause changes in ground ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
The Model for Dilution Process of Landslide Triggered Debris Flow —A Case of Guanba River in Tibet Southeastern Plateau
Understanding and modeling the downstream dilution process of a landslide triggered debris flow is the foundation for recognizing the boundary condition and dilution mechanism of this type of debris flow, and this serves ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
The model of direct relative orientation with seven constraints for geological landslides measurement and 3D reconstruction
With the development of computer vision and high-precision 3D model reconstruction, used for the measurement and 3D reconstruction of the geological landslides, acquiring a high-precision relative orientation basing multiple ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
The Modified Quasi-geostrophic Barotropic Models Based on Unsteady Topography
New models using scale analysis and perturbation methods were derivated starting from the shallow water equations based on barotropic fluids. In the paper, to discuss the irregular topography with different magnitudes, ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
The paipa volcano, eastern cordillera of colombia, south america (part ii): petrography and major elements petrology
Paipa volcano products are mainly pyroclastic pumice and ash flow tuffs, lava domes and pyroclastic block and ash flow tuffs. They are classified as alkaline rhyolites and trachytes and high-K calcalkaline rhyolites. ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal.
