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1
artículo
Publicado 2020
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In this article we present the results of the archaeological investigations carried out in the Colquioc annex, district of the same name. Archaeological surveys have allowed to record archaeological sites hitherto unknown to archeology, from the Early Horizon periods, made up of pyramidal structures; small domestic units and burial areas of the Late Intermediate Period; and the old town of Colonial dating, corresponding to the town of reduction foundation of the first century of Hispanic domination. The Colquioc area acquired strategic importance in pre-Hispanic periods due to its location, next to the confluence of the Fortaleza and Purisima rivers, being a meeting point for various groups through the Tinkuy.
2
artículo
Publicado 2020
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In this article we present the results of the archaeological investigations carried out in the Colquioc annex, district of the same name. Archaeological surveys have allowed to record archaeological sites hitherto unknown to archeology, from the Early Horizon periods, made up of pyramidal structures; small domestic units and burial areas of the Late Intermediate Period; and the old town of Colonial dating, corresponding to the town of reduction foundation of the first century of Hispanic domination. The Colquioc area acquired strategic importance in pre-Hispanic periods due to its location, next to the confluence of the Fortaleza and Purisima rivers, being a meeting point for various groups through the Tinkuy.
3
artículo
Publicado 2009
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The microriver basin of Cunyatupe, located to the north of the city of Huaraz, in the department of Ancash-Peru; it presents/displays 5 zones of life, in addition to be within the White Mountain range of the Valley of Huaylas it has water in sufficient amount, to suitably maintain all the existing natural resources in this. With respect to the characterization of the microriver basin one was the following natural resources: Water, which it includes/understands a fluvial network that mainly has its origin in the different easts caused by the excessive erosion from cárcavas, Hidrobiológico where it was observed the presence of seaweed and worms like (Rhabditis Diplogasteroides, Dichotomosiphon, etc), Cattle dealer with bovine, ovine, equinos and pig greater cattles that is to say, Agricultural with the presence of cultivables species nutritional altoandinos like: barley, Pope, maize, whe...
4
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
5
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
6
artículo
Publicado 2024
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La acelerada pérdida de la cobertura glaciar en la Cordillera Blanca en Áncash, Perú, expone las rocas subyacentes con altas concentraciones de sulfuros de la Formación Chicama a procesos de oxidación y lixiviación, generando drenajes ácidos de roca (DAR) en zonas glaciares y periglaciares. Estos son transportados por la escorrentía superficial, contaminando las aguas superficiales con altas concentraciones de metales y sulfatos, además de incrementar la acidez, lo que supone un riesgo para la salud humana y el ecosistema. Por ello, se evaluaron los índices de riesgo para la salud humana por contaminación por metales en 19 puntos de muestreo de aguas superficiales distribuidos en la subcuenca del Río Negro. Los análisis hidroquímicos revelaron concentraciones medias de metales en el siguiente orden: Fe (28,597 mg/L), Al (3,832 mg/L), Mn (1,085 mg/L), Zn (0,234 mg/L), Ni (0,...
7
artículo
Publicado 2021
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The characterization and delimitation of the existing vegetation cover in a given geographic area is of vital importance for an adequate management of natural resources. In this sense, this research proposes a methodology to delimit the types of vegetation cover in the Quillcay sub-basin. The study area is located in the districts of Huaraz and Independencia, province of Huaraz, Ancash; in the middle western slope of the Cordillera Blanca and Santa river basin. The delimitation of the vegetation cover began with the identification of the dominant vegetation cover types (Andean grassland, forest, wetland and shrub thicket); then, the geographic characteristics (slope and altitude) were defined for each type of vegetation cover. Subsequently, layers were generated with the Spectral Angle Mapper (SAM) classifier and the calculation of the Normalized Difference Moisture Index (NDMI). Finally...
8
artículo
Publicado 2021
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The characterization and delimitation of the existing vegetation cover in a given geographic area is of vital importance for an adequate management of natural resources. In this sense, this research proposes a methodology to delimit the types of vegetation cover in the Quillcay sub-basin. The study area is located in the districts of Huaraz and Independencia, province of Huaraz, Ancash; in the middle western slope of the Cordillera Blanca and Santa river basin. The delimitation of the vegetation cover began with the identification of the dominant vegetation cover types (Andean grassland, forest, wetland and shrub thicket); then, the geographic characteristics (slope and altitude) were defined for each type of vegetation cover. Subsequently, layers were generated with the Spectral Angle Mapper (SAM) classifier and the calculation of the Normalized Difference Moisture Index (NDMI). Finally...
9
artículo
Publicado 2008
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In Peru, work has been carried out in the area of solid mining waste from the mineral flotation process since 2000, where the Ministry of Energy and Mines begins to carry out the inventory of mining environmental liabilities related to abandoned mining activities where it involves acidic waters, dumps, manholes and mining tailings, respectively; coming to the end to prepare the law 28271, law of regulation of the environmental liabilities of the mining activity, promulgated on July 2, 2004. In the Santa river basin the inventory of 153 mining environmental liabilities has been carried out, reaching the conclusion the urgency of conducting research studies to control the alarming contamination of the physical environment in this basin. At the end of the project, it establishes the preliminary technical parameters at the pilot level in relation to the granulometric and mineralogical ...
10
artículo
Publicado 2011
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With the sample of stream sediments in the basin of the river Torres – Vizcarra (Huanuco-Ancash), which have been subjected to the chemical speciation method, it has been possible to define the dispersion process for the main metallic elements. This characterization is define by the relation between the total metal content and the residual content of the sample, giving as a result a factor named relative dispersion, which it has been determined for the main elements, highlighting among them, copper, lead, zinc and cadmium because of its very high mobility, while chromium and vanadium for its low mobility. The application of the sequential extraction technique allows defining the fraction of metallic elements moving in a specific environment, identifying the bioavailable fractions, as well as allows identifying the real environmental impact produced by the dispersion of heavy metals in ...
11
artículo
Publicado 2011
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With the sample of stream sediments in the basin of the river Torres – Vizcarra (Huanuco-Ancash), which have been subjected to the chemical speciation method, it has been possible to define the dispersion process for the main metallic elements. This characterization is define by the relation between the total metal content and the residual content of the sample, giving as a result a factor named relative dispersion, which it has been determined for the main elements, highlighting among them, copper, lead, zinc and cadmium because of its very high mobility, while chromium and vanadium for its low mobility. The application of the sequential extraction technique allows defining the fraction of metallic elements moving in a specific environment, identifying the bioavailable fractions, as well as allows identifying the real environmental impact produced by the dispersion of heavy metals in ...
12
artículo
Publicado 2009
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La microcuenca de Cunyatupe, ubicada al norte de la provincia de Huaraz, en el departamento de Ancash-Perú, presenta cinco zonas de vida. Además por hallarse dentro de la Cordillera Blanca del Callejón de Huaylas tiene agua en cantidad suficiente, para mantener adecuadamente todos los recursos naturales existentes en ella. Con respecto a la caracterización de la microcuenca, se encontraron los siguientes recursos naturales: Agua, que comprende una red fluvial que tiene su origen en las diferentes nacientes ocasionadas principalmente por la erosión excesiva de cárcavas, Hidrobiológico donde se observó la presencia de algas y gusanos como el Rhabditis diplogasteroides, Dichotomosiphon, etc., Ganadero con ganados mayores, es decir, vacunos, ovinos, equinos y porcinos, Agrícola con la presencia de especies cultivables alimenticias altoandinas como: cebada, papa, maíz, entre otros; ...
13
artículo
Publicado 2024
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Water security in Andean watersheds depends on adaptive water management in the face of glaciohydrological and socioeconomic impacts. The Parón sub-basin in the Santa River basin (Ancash, Peru) is a suitable case in this respect. Water is regulated by a floodgate in the Parón lake, which has become a focal point of social conflict. This study analyzes the water balance of this sub-basin using a semi-distributed hydrological model for the present (2006-2016) and future (2030-2050), considering different scenarios of precipitation variation, glacial melting, and increased water demand. Without regulation of the lake, the sub-basin would enter into a strong water deficit in the dry months (June-August). Until 2030 (2050), assuming a maximum regulation of 2.6 m³/s, a 15% (35%) increase in precipitation, and a 10% (26%) decrease in the glacier contribution to the annual flow, water availab...
14
artículo
Publicado 2025
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The Peruvian Amazon faces an increasing threat of soil erosion, driven by unsustainable agricultural practices and accelerated deforestation. In Neshuya (Ucayali region), agricultural activity has intensified since 2014, but the effect on soil erosion is unknown. The present study aimed to evaluate the increase in erosion levels, at a subbasin of the central–eastern Amazon of Peru, in a Geographic Information System (GIS) environment. The revised universal soil loss equation (RUSLE) model was used for assessing the effect of vegetation cover change from 2016 to 2022. In the Neshuya sub-basin (973.4 km2 ), the average erosion increased from 3.87 to 4.55 t ha−1 year−1 , on average. In addition, there is great spatial variability in the values. In addition, 7.65% of the study area (74.52 km2 ) exceeds the soil loss tolerance limit (15 t ha−1 year−1 ). The deforestation rate was 17...
15
artículo
Publicado 2025
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Climate change is projected to increase global temperatures and alter rainfall patterns. In Peru, these changes could adversely affect the central basin of the Huallaga River by increasing pest and disease incidence, evapotranspiration, and water consumption. This basin is one of the country’s main rice-producing regions, where the crop is traditionally cultivated using inefficient practices, such as continuous flood irrigation. This study evaluated the effects of different irrigation management strategies on the growth and yield of rice (Oryza sativa var. INIA 516 LM1-La Union 23), the water footprint as an indicator of water use efficiency, and the incidence of pests and diseases associated with irrigation regimes. Three irrigation treatments were implemented: Traditional flooding T1 (maintenance of a 0.15 m water layer with replenishment every 4 days), Optimized flooding T2 (repleni...
16
artículo
Publicado 2022
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Drought monitoring, including its severity, spacing and duration, becomes an essential tool to establish a drought risk management and mitigation plan. This paper aims to compare the Standardized Precipitation Index (SPI) with the Standardized Streamflow Index (SSI) in the Chancos sub-basin, Ancash. The statistical evaluation will be done through the analysis of homogeneity and trends of the data set, then for the analysis of the statistical association is included the Pearson correlation coefficient (PCC), root mean square error (RMSE), relative bias (BIAS) and the Nash-Sutcliffe coefficient (NSE) to determine the degree of consistency between the drought indices. The study revealed that the characteristics of meteorological and hydrological drought in the study period show similarity of patterns which is indicated by the good correlation coefficient between them. In addition, the best ...
17
tesis de grado
Publicado 2022
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Universidad Nacional Agraria La Molina. Facultad de Ingeniería Agrícola. Departamento Académico de Recursos Hídricos
18
artículo
Entre abril y octubre 2012, se evaluó la línea costera y las bahías Coishco, El Ferrol, Samanco, Tortuga, Casma, Huarmey y Caleta Culebras y los ríos Santa, Lacramarca, Casma, Culebras, Huarmey y Samanco. Se localizaron valores termohalinos propios de Aguas Costeras Frías (ACF) con influencias de vertidos antropogénicos y variaciones locales del proceso de evaporación. En abril el oxígeno disuelto presentó valores >5,00 mg/L en toda el área a excepción de la bahía Coishco (3,72 mg/L); en octubre la concentración más alta estuvo en Samanco (7,51 mg/L) y la más baja en Huarmey (2,53 mg/L), el pH estuvo en relación directa con el oxígeno. En abril y octubre los agentes contaminantes de sólidos suspendidos totales presentaron valores >30,00 mg/L en las bahías Coishco, El Ferrol y Tortuga, superando lo permitido por los Estándares Nacionales de Calidad Ambiental para Agua,...
19
artículo
Se evaluó la calidad ambiental en el litoral costero de la Región Áncash en noviembre - diciembre 2018. Los muestreos se efectuaron en las bahías Coishco, El Ferrol, Samanco, Los Chimus, Tortuga, Casma, Huarmey y caleta Culebras y en los ríos Santa, Lacramarca, Samanco, Nepeña, Casma, Culebras y Huarmey. Se encontraron valores termohalinos propios de Aguas Costeras Frías (ACF) y Aguas Subtropicales Superficiales (ASS) con influencias de vertidos antrópicos y variaciones locales de evaporación como resultado de menores profundidades en las áreas evaluadas. El oxígeno disuelto superficial en Samanco fue mayor a 8 mg/L por influencia de microorganismos fitoplanctónicos formadores de marea roja; en caleta Culebras y Huarmey fueron menores a 3,50 mg/L por el proceso de afloramiento costero. Los nutrientes presentaron algunos valores que superaron lo indicado por la normatividad vi...
20
artículo
Publicado 2008
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The peripheric and urban expansion area of Huaraz is taking place on the lower part of Anqui River’s Sub Basin, between 3,200 and 3,500 m.a.s.l. These areas were traditionally used to develop agricultural and livestock activities. Nevertheless, because of the economic boom of Huaraz, these areas are being urbanized slowly but constantly. The lower part of the basin is a natural area of fluvioglaciar sedimentation and mass motion (water, mud, and rock avalanches). In the highest parts of the basin the origin of the above mentioned natural process is the glaciar erosion and fusion of the glaciar mass. The incidence of avalanches, which could affect the lower part of the basin is slow. Nevertheless, the chance of having one like in 1941 or 1970 is not to be ruled out because Perú is a highly seismic country.
