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basin function » basis function (Expander búsqueda), basic function (Expander búsqueda), basis functions (Expander búsqueda)
basins basin » basins using (Expander búsqueda), bambas basin (Expander búsqueda), basica basic (Expander búsqueda)
1
artículo
Publicado 2017
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Los bosques amazónicos son ecosistemas sensibles al fuego y, en consecuencia, los incendios afectan a la estructura y composición del bosque. Por ejemplo, el vestigio de los incendios pasados puede persistir a través de algunas especies y rasgos que se encuentran debido a los fuegos históricos. En este estudio se comprueban las relaciones entre los rasgos funcionales que se presentan clásicamente como los principales componentes de las estrategias ecológicas de las plantas y los filtradores ambientales relacionadas con el clima y los incendios históricos entre las parcelas de bosque maduro permanente a lo largo del rango de gradientes ambientales locales y regionales que se dan en la Amazonia. Se utilizó el porcentaje de carbono pirogénico superficial del suelo (PyC), una forma recalcitrante de carbono que puede persistir durante milenios en los suelos, como un nuevo indicador d...
2
artículo
The research work was carried out in the sub-basin of the Yanayacu River (Ancash - Peru), its objectives were: to characterize the sub-basin of the Yanayacu River and the contrast of the existing empirical equations in the scientific literature related to the water network. The 20i Recuay digital charts and the Arcgis 10.8 software were used as materials. Horton's laws of channel number, mean channel length for a given order, and Melton's law were confirmed for the Yanayacu River sub-basin. Also, an exponential equation was obtained for the prediction of the total number of channels as a function of the channel order and a potential equation for the prediction of the total length of channels as a function of the total number of channels of a given order. Keywords: water network; Horton; Melton; number of channels; channel order
3
artículo
The research work was carried out in the sub-basin of the Yanayacu River (Ancash - Peru), its objectives were: to characterize the sub-basin of the Yanayacu River and the contrast of the existing empirical equations in the scientific literature related to the water network. The 20i Recuay digital charts and the Arcgis 10.8 software were used as materials. Horton's laws of channel number, mean channel length for a given order, and Melton's law were confirmed for the Yanayacu River sub-basin. Also, an exponential equation was obtained for the prediction of the total number of channels as a function of the channel order and a potential equation for the prediction of the total length of channels as a function of the total number of channels of a given order. Keywords: water network; Horton; Melton; number of channels; channel order
4
artículo
Publicado 2011
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This study is a geochemical investigation of the Andean and Foreland basins of the Amazon River at high spatial and time resolution, carried out within the framework of the HYBAM research program (Hydro-geodynamics of the Amazon Basin). Monthly sampling was carried out at 27 gauging stations located in the upper tributaries of the Amazon Basin (from north to south: the Napo, Marañon, Ucayali, Madre de Dios-Beni and Mamore Rivers). The aim of this paper is to estimate the present-day chemical weathering rate (CWR), as well as the flux of CO2 consumption from total and silicate weathering in the Andes and Foreland Amazon basins, and to discuss their distribution as a function of geomorphic and structural parameters. Based on the forward method, the Napo and other Ecuadorian basins present high silicate weathering rates in comparison with the other basins. We confirm that the Marañon and ...
5
artículo
Publicado 2021
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The present study was carried out at the confluence of the Baños, Minascocha and Quilla micro-basins; which belongs to the upper part of the Chancay-Huaral basin, in order to identify the areas of greatest vulnerability to high intensity rainfall phenomena (floods). For the modeling of this section, the flows obtained by means of the SWAT software were used. The flood simulation was carried out using the IBER V2.5 software, which is free software, which is used to simulate floods in shallow waters, that is, shallow waters. The files used were satellite images, DEM files, maximum flows. The Geographic Information Systems were also used: ArcGis 10.5, QGIS 3.8.2, SASPLANET, GLOBALMAPER. The mathematical basis was the two-dimensional equations of St. Venant, which incorporates the turbulence and friction of the flow. The results are shown in three strategic points at the exit of the headwat...
6
artículo
Publicado 2012
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The pollution of the continental waters is a problem at a world scale, mainly due to the impact of the mining tailings. Using top technologies as neutralization plants of acid waters, many companies are mitigating the impact of this functioning; so taking as a reference the changes in the concentration of heavy metals present in water, soils and cultivations of the high, middle and low basin of the Moche river, samplings of water were obtained at eight stations of the Moche river (Trujillo, Peru), and in four sectors of its margins for soils and cultivations. The most representative heavy metals in water were found in the high basin during the year 1980: iron (557.500 ppm), lead (100.375 ppm), cadmium (4.550 ppm), copper (6.900 ppm), zinc (262.900 ppm) and arsenic (9.000 ppm); whereas in the soils the higher concentrations were found on the right margin of median basin in the year 1980: ...
7
artículo
Publicado 2012
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The pollution of the continental waters is a problem at a world scale, mainly due to the impact of the mining tailings. Using top technologies as neutralization plants of acid waters, many companies are mitigating the impact of this functioning; so taking as a reference the changes in the concentration of heavy metals present in water, soils and cultivations of the high, middle and low basin of the Moche river, samplings of water were obtained at eight stations of the Moche river (Trujillo, Peru), and in four sectors of its margins for soils and cultivations. The most representative heavy metals in water were found in the high basin during the year 1980: iron (557.500 ppm), lead (100.375 ppm), cadmium (4.550 ppm), copper (6.900 ppm), zinc (262.900 ppm) and arsenic (9.000 ppm); whereas in the soils the higher concentrations were found on the right margin of median basin in the year 1980: ...
8
tesis de maestría
Publicado 2020
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Evalúa la influencia de la variabilidad atlántica en la precipitación de la Cuenca Amazónica. Este estudio proporciona un análisis detallado, en la escala de tiempo interanual, de la influencia del Pacífico tropical y el Océano Atlántico en el régimen de precipitaciones sobre América del Sur, con un enfoque en la Cuenca Amazónica. Para ello, se utilizan datos mensuales de temperatura de la superficie del mar para determinar los principales modos de variabilidad en tres regiones atlánticas: Atlántico norte tropical (TNA), Atlántico sur tropical (TSA) y Atlántico sur subtropical (STSA). Además, se analizó la interacción Pacífico y Atlántico mediante correlaciones móviles y ondeletas cruzadas para el período 1880-2017. Descubrimos que las regiones del Atlántico se han estado acoplando y desacoplando en períodos específicos. Asimismo, los océanos Pacífico y Atlánt...
9
artículo
Publicado 2017
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The aim of the following review is to describe the seasonal reproductive behavior in male and female ungulates, and identify the determinants of reproductive synchrony. Intrinsic and extrinsic factors that influence the reproductive seasonality of ungulates analyzed. Intrinsic factors are related to the same individual such as genotypic and phenotypic characteristics, and implies that the reproductive aspects can not be extrapolated between species and breeds, and are modified by the action of external factors such as photoperiod, availability of food, temperature, latitude, among others. Among these factors are identified primarily photoperiod and food availability. The photoperiod and food availability are the main signals that determine melatonin levels, and this modulates the reproductive function. Photoperiod is related to the intensity of light and darkness that animals are exposed...
10
artículo
Publicado 2017
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The aim of the following review is to describe the seasonal reproductive behavior in male and female ungulates, and identify the determinants of reproductive synchrony. Intrinsic and extrinsic factors that influence the reproductive seasonality of ungulates analyzed. Intrinsic factors are related to the same individual such as genotypic and phenotypic characteristics, and implies that the reproductive aspects can not be extrapolated between species and breeds, and are modified by the action of external factors such as photoperiod, availability of food, temperature, latitude, among others. Among these factors are identified primarily photoperiod and food availability. The photoperiod and food availability are the main signals that determine melatonin levels, and this modulates the reproductive function. Photoperiod is related to the intensity of light and darkness that animals are exposed...
11
artículo
Publicado 2017
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The aim of the following review is to describe the seasonal reproductive behavior in male and female ungulates, and identify the determinants of reproductive synchrony. Intrinsic and extrinsic factors that influence the reproductive seasonality of ungulates analyzed. Intrinsic factors are related to the same individual such as genotypic and phenotypic characteristics, and implies that the reproductive aspects can not be extrapolated between species and breeds, and are modified by the action of external factors such as photoperiod, availability of food, temperature, latitude, among others. Among these factors are identified primarily photoperiod and food availability. The photoperiod and food availability are the main signals that determine melatonin levels, and this modulates the reproductive function. Photoperiod is related to the intensity of light and darkness that animals are exposed...
12
artículo
Publicado 2017
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The aim of the following review is to describe the seasonal reproductive behavior in male and female ungulates, and identify the determinants of reproductive synchrony. Intrinsic and extrinsic factors that influence the reproductive seasonality of ungulates analyzed. Intrinsic factors are related to the same individual such as genotypic and phenotypic characteristics, and implies that the reproductive aspects can not be extrapolated between species and breeds, and are modified by the action of external factors such as photoperiod, availability of food, temperature, latitude, among others. Among these factors are identified primarily photoperiod and food availability. The photoperiod and food availability are the main signals that determine melatonin levels, and this modulates the reproductive function. Photoperiod is related to the intensity of light and darkness that animals are exposed...
13
objeto de conferencia
Publicado 2017
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We would like to thank the PUPC and CONCYTEC for the opportunity given to carry out this work within the management agreement N° 27-2015 - FONDECYT between these institutions. In addition, the authors thank to SENAMHI and especially to Alan Llacza.
14
artículo
Publicado 2020
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In this study, it is presented the Length-Weight relationship and Condition Factor for Prochilodus nigricans (boquichico) and Potamorhina altamazonica (llambina) from the Tahuayo River basin. These two species are among the most important commercial and subsistence fishing resources for Loreto, Peru. Biological data were collected during 12 months and analyses were obtained after 1,114 individual records of these two species from catches provided by the Association of Artisanal Fishermen "Puma Garza I". Results showed that boquichico, both males and females, features an isometric growth (PT = 0,0126 × LT3.034) and llambina has a negative allometric growth with differences in the parameters for females (PT = 0,0985 × LT2.35) and for males (PT = 0,0755 × LT2.43). Fish stocks of both species were found in good fitness condition throughout the hydrological cycle and variations were relate...
15
artículo
Publicado 2024
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The loss of biodiversity and the effects of climate change hurt agricultural production and food security in Peru and around the world. The family farming sector in Peru (97% of agricultural units – AU) faces numerous challenges when it comes to sustainably producing food. To sustain Peruvian agriculture in the face of climate change, climate-smart agricultural (CSA) practices and agrobiodiversity conservation are essential. This document characterizes the level of agrobiodiversity (index IDA) of family AUs in the Crisnejas basin and analyzes the impact of the elements that affect farmers’ decisions to apply multiple CSA measures. CSA adoption decisions were analyzed using an econometric analysis framework combining multivariate and ordered probit models for 340 family AUs. Results indicate that AUs with a lower agrobiodiversity index (IDA) have a higher monthly income (IDA = 0.56, 3...
16
artículo
Publicado 2020
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In this work, maximum flows observed in the Paranapanema river basin are modeled by a mixture of two GEV distributions whose components correspond to the summer and winter subpopulations. The nonlinear discriminant function allowed to confirm the assumption of mixture model.The proposed model is then used to determine probabilities of exceedance and return periods associated with extreme flows, which are of fundamental importance for hydraulic projects. The results show significant differences when a mixture model is used and therefore an approach more coherent with the observed data.
17
artículo
Publicado 2020
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In this work, maximum flows observed in the Paranapanema river basin are modeled by a mixture of two GEV distributions whose components correspond to the summer and winter subpopulations. The nonlinear discriminant function allowed to confirm the assumption of mixture model.The proposed model is then used to determine probabilities of exceedance and return periods associated with extreme flows, which are of fundamental importance for hydraulic projects. The results show significant differences when a mixture model is used and therefore an approach more coherent with the observed data.
18
tesis de grado
Publicado 2021
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Basin-scale simulation is fundamental to understand the hydrological cycle, and in identifying information essential for water management. Accordingly, the Soil and Water Assessment Tool (SWAT) model is applied to simulate runoff in the semi-arid Tambo River Basin in southern Peru, where economic activities are driven by the availability of water. The SWAT model was calibrated using the Sequential Uncertainty Fitting Ver-2 (SUFI-2) algorithm and two objective functions namely the Nash-Sutcliffe simulation efficiency (NSE), and coefficient of determination (R2) for the period 1994 to 2001 which includes an initial warm-up period of 3 years; it was then validated for 2002 to 2016 using daily river discharge values. The best results were obtained using the objective function R2; a comparison of results of the daily and monthly performance evaluation between the calibration period and valida...
19
artículo
Publicado 2023
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In the present work, the morphometric and functional characteristics of the Teaone river sub-basin were studied, using geographic information systemtools, as an input for land use planning. Digital global elevation models from the Advanced Spaceborne Thermal Emission and Reflection Radiometer(ASTER-GDEM) were used. Among the most outstanding parameters we have that the Teaone river sub-basin has an area of 504,66 km2, aperimeter of 138,48 km, a shape factor of 0,27; which means that it is not prone to flash floods; and a compactness index of 1,74 that expresses theelongated shape of the sub-basin, with a low water concentration and unlikely recurrent floods.
20
artículo
Publicado 2018
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In this article we present the place names of the Tambopata river basin in the Puno region. It constitutes only part of the broader study that we have carried out on the lexicon of place names, plants, animals, diseases and objects collected in the Tambopata river basin, which includes three districts in the province of Sandia: Yanahuaya, San Juan del oro and Putina in the province of Sandia. We analize linguistically – phonologically, lexically and semantically – the variation of the names related to the local language. BesideThe theory of dialectal variation, the method of linguistic geography or geolinguistics are applied to lift isoglosas with descriptive and interpretative focus, inspired in descriptive and functional linguistics. The hypothesis set up has been proven that the language and culture has being abandoned slowly. The aim of this study was to prove the dialectization ...
