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Navegação Earth Sciences Research Journal por data do documento
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Uncertainty in rainfall input data in a conceptual water balance model: effects on outputs and implications for predictability
As hydrological models become more prevalent in water resources planning and management, increasing levels of detail and precision are needed. Currently, reliable models that simulate the hydrological behavior of a basin ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
A new empirical relation between surface wave magnitude and rupture length for turkey earthquakes
Many practical problems encountered in quantitative oriented disciplines entail finding the best approximate solution to an over determined system of linear equations. In this study, it is investigated the usage of different ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Enhancing time resolution by stabilized inverse filter and q estimated on instantaneous spectra
Physical phenomena, such as attenuation of high frequency components and velocity dispersion, deteriorate seismic images. To enhance seismic resolution, Q filtering is usually applied, where the accurate estimation of Q ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Analysis of aeromagnetic data for interpretation of seismicity at fayoum-cairo area, egypt
An aeromagnetic reconnaissance study is presented to delineate the subsurface structure and tectonic setting at the Fayoum-Cairo district, which experienced a damaging earthquake on October 12, 1992 of magnitude (M = 5.7). ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
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. -
Using aromatic biological markers as a tool for assessing thermal maturity of source rocks in the campano-maastrichtian mamu formation, southeastern nigeria
The concentration and distribution of aromatic biomarkers in coals and shales from five boreholes penetrating the Maastrichtian Mamu Formation of the Anambra Basin, southeastern Nigeria, were investigated by gas ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Hydrogeochemistry and quality assessment of shallow groundwater in the southern part of the yellow river alluvial plain (zhongwei section), northwest china
Statistical analyses, a Piper diagram, the saturation index and the correlations of chemical parameters were used to reveal the hydrogeochemistry and hydrogeochemical evolution of shallow groundwater in the southern part ...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. -
Proceedings. first assembly of the latin-america and caribbean seismological commission - lacsc
The Latin-American and Caribbean region is an area with a very complex tectonic setting, where stress and strain generated by the interaction of several lithospheric plates is being absorbed. Several regional fault systems, ...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. -
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. -
Integrated assessments of possible effects of hydrocarbon and salt water intrusion on the groundwater of iganmu area of lagosmetropolis, southwestern nigeria
Vertical electrical sounding (VES) and Induced Polarisation (IP) methods of geophysical survey were incorporated with physiochemical analysis of well water samples to determine vertical extent of petroleum-product ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Petrography and application of the rietveld method to the quantitative analysis of phases of natural clinker generated by coal spontaneous combustion
Fine-grained and mainly reddish color, compact and slightly breccious and vesicular pyrometamorphic rocks (natural clinker) are associated to the spontaneous combustion of coal seams of the Cerrejón Formation exploited by ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Geophysical contribution to evaluate the hydrothermal potentiality in egypt: case study: hammam faraun and abu swiera, sinai, egypt
The geothermal potentiality in Egypt has a minor significance in the aspects of the Egyptians life, while the hydraulic and hydrocarbonresources are more convenient. However, some other applications for the geothermal ...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. -
Activity and vp/vs ratio of volcano-tectonic seismic swarm zones at nevado del ruiz volcano, colombia
An analysis of the seismic activity for volcano-tectonic earthquake (VT) swarms zones at Nevado del Ruiz Volcano (NRV) was carried out for the interval 1985- 2002, which is the most seismic active period at NRV until now ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Groundwater investigation in awlad salameh southern sohag, upper egypt
The groundwater was the only water resources in the reclaiming area in Awlad Salameh village in the western side of Nile valley in Sohag governorate, Egypt. The soil was salinized and decrease the income per capita due to ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Enso modulations on streamflow characteristics
El Niño Southern Oscillation (ENSO) has been linked to climate and hydrologic anomalies throughout the world. This paperpresents how ENSO modulates the basic statistical characteristics of streamflow time series that is ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Determination of effective elastic thickness of the colombian andes using satellite-derived gravity data
Gravity anomaly values derived from Global Geopotential Models (calculated from the CHAMP and GRACE satellite missions), are compared with free air ground gravity data to find the best representation of surface data. Using ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal. -
Statistical investigation of the groundwater system in darb el-arbaein, southwestern desert, egypt
In Darb El Arbaein, the groundwater is the only water resources. The aquifer system starts from Paleozoic-Mesozoic to Upper Cretaceous sandstone rocks. They overlay the basement rocks and the aquifer is confined. In the ...Universidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal.
