In the Cañete River Basin, a glacial retreat has been observed for more than 37 years. Based on aerial photographs for the years 1962 and 1970, and using Landsat images from the 1990 - 2015 period, the glacier surface of the Collquepucre, Llongote, Pariacaca and Ticcla snowfalls has decreased by 2 to 7 km2, for every 5 years; a situation that is related to the dynamics of tropical glaciers where various sources indicate that they are the most fragile ecosystems in the face of climate change.

En la cuenca del río Cañete, se observa un proceso de retroceso glaciar constante desde hace más de 37 años. Basado en fotografías aéreas para los años 1962 y 1970, y utilizando imágenes Landsat del periodo 1990-2015, se ha podido establecer que la superficie glaciar de los nevados Collquepucre, Llongote, Pariacaca y Ticcla ha disminuido en proporción de 2 a 7 km2, por cada 5 años; situación que guarda relación con la dinámica de los glaciares tropicales en donde diversas fuentes indican que son los ecosistemas más frágiles ante el cambio climático.

Climate changes that affect our planet nowadays, will lead us to approach to what is happening with the mountain glacial of our country, characterized by its fragility. The Cordillera Blanca is one of the most important glacial areas of our country. Most of the monitoring activities have been carried out on the field where many times a lot of obstacles to collect information are found. In this way, Geomatics, by means of Remote Sensing, helps us to conduct with greater ease the monitoring tasks, using satellite images to determine the melting area of the glaciers. For the study, political boundaries of Huaraz and Independencia districts, as well as the use of several satellite images of 1989, 1998 and 2005 have been considered as references, which help us analyse the behaviour of glacial regression in a period of 16 years and forecast such behaviour by 25 years (2014).

Climate changes that affect our planet nowadays, will lead us to approach to what is happening with the mountain glacial of our country, characterized by its fragility. The Cordillera Blanca is one of the most important glacial areas of our country. Most of the monitoring activities have been carried out on the field where many times a lot of obstacles to collect information are found. In this way, Geomatics, by means of Remote Sensing, helps us to conduct with greater ease the monitoring tasks, using satellite images to determine the melting area of the glaciers. For the study, political boundaries of Huaraz and Independencia districts, as well as the use of several satellite images of 1989, 1998 and 2005 have been considered as references, which help us analyse the behaviour of glacial regression in a period of 16 years and forecast such behaviour by 25 years (2014).

The Agro-Ecological Zonation (ZAE) defines areas based on soil, physiography and climatic characteristic combinations (FAO, 1997). To do this, the Geographic Information Systems (GIS) by using the Help Systems for Spatial Decision (SADE) are a tool of fundamental importance in topics related to the agrarian development. This allows us to manage the variables of the physical environment where this activity is made, such as the climate, soil, and water; each one is characterized by the spatial variation of the territory. Climate is mainly influenced by the place topography; soil is considered as a potential resource but also as a hindrance to the cultigens’ growth; water is considered as one of the main shortages for the Tacna Region, and its influence on crops is analyzed according to its availability and quality. All these variables should be spatialized within the study area to integr...

La presente investigación centra sus aportes en el estudio de los niveles de peligro de origen natural como aluviones e inundaciones que amenazan a los elementos esenciales localizados en la ciudad de Huaraz (puentes y recintos como hospitales, colegios, bomberos) y áreas de expansión (puentes, carreteras y el aeropuerto de Anta). Esos elementos son considerados esenciales porque tienen que ver con el normal desarrollo del área urbana. El área de estudio no es ajena a esta situación, ya que históricamente se ha visto afectada por el impacto de eventos geológico-geomorfológicos, tales como aluviones e inundaciones. Es decir, desastres constituidos por cuantiosos daños materiales y la pérdida de vidas humanas, que cambiaron la configuración territorial. La ciudad de Huaraz fue reconstruida en gran parte, sin embargo, en la actualidad viene creciendo en zonas de peligro muy alto...

This investigation is framed in the applied geography field by the use of geomorphology analysis, satellital images and geomatic techniques. Main endogenous and exogenous causes that produce removal process in mass in the sub-river basin of the stream Cojup, that is concordant in its low part with the city of Huaraz, are identified. Main process of present occupation of this city supported with «Model of Elevation of Relieve (DEM) and coincident with of very high dangerous zones, and consequently incompatible with welcome capacity is identified.

The sub basin of the Quebrada de Chucumayo is a contributor of the Rimac River (RR) on its left bank and is framed in morphology of mountains. The contributions of this research are: a) Lifting of new hematic information on geomorphology, vegetation and use capacity Soils, which was the basis for assessing land use and know the natural soil suitability. b) The design and implementation of models to assess the geographic applying each of the ecological economic units on productivity, conservation and land use conflicts approach. c) Identification of spatial units with problems of conflict of Use and disaster risks. d) Ecological and Economic Zoning study area as input geospatial prepare a proposed land uses through a (planning). In summary, we found that most of the economic activities in a situation of unsustainable because they are exposed to the impact of natural hazards spaces corresp...

In all of Peru, there are not enough weather stations that could provide climate data and in view of this need, in the present investigation the application of different methods is analyzed in order to complete missing data in four rainfall stations in the areas located between 4000 to 4500 msnm of the Arequipa region. These methods are; linear regression, distance ratios, neighborhood averages, correlation with neighboring stations, multiple regression, and completion has been added by the regional vector method. The methods are analyzed through the Determination Coefficient (R2), Standard Estimation Error (EEE), Bland and Altman concordance test, establishing the best estimator in this region.

This investigation is framed in the applied geography field by the use of geomorphology analysis, satellital images and geomatic techniques. Main endogenous and exogenous causes that produce removal process in mass in the sub-river basin of the stream Cojup, that is concordant in its low part with the city of Huaraz, are identified. Main process of present occupation of this city supported with «Model of Elevation of Relieve (DEM) and coincident with of very high dangerous zones, and consequently incompatible with welcome capacity is identified.

The sub basin of the Quebrada de Chucumayo is a contributor of the Rimac River (RR) on its left bank and is framed in morphology of mountains. The contributions of this research are: a) Lifting of new hematic information on geomorphology, vegetation and use capacity Soils, which was the basis for assessing land use and know the natural soil suitability. b) The design and implementation of models to assess the geographic applying each of the ecological economic units on productivity, conservation and land use conflicts approach. c) Identification of spatial units with problems of conflict of Use and disaster risks. d) Ecological and Economic Zoning study area as input geospatial prepare a proposed land uses through a (planning). In summary, we found that most of the economic activities in a situation of unsustainable because they are exposed to the impact of natural hazards spaces corresp...

In all of Peru, there are not enough weather stations that could provide climate data and in view of this need, in the present investigation the application of different methods is analyzed in order to complete missing data in four rainfall stations in the areas located between 4000 to 4500 msnm of the Arequipa region. These methods are; linear regression, distance ratios, neighborhood averages, correlation with neighboring stations, multiple regression, and completion has been added by the regional vector method. The methods are analyzed through the Determination Coefficient (R2), Standard Estimation Error (EEE), Bland and Altman concordance test, establishing the best estimator in this region.

The Huallaga River is one of the main Amazon rivers. The research area located in the Amazon plain is characterized by presenting a homogeneous relief, however due to the dynamics of the river the physiographic aspect is varied, these range from the flood areas to higher areas called hills. The flow regime varies throughout the year, showing months of low water and others with abundant recharge, the average flow is 2 969.5 m3/s, in the research area the average width is 325 m and has a maximum depth of 16 m. Due to its dimensions, the Huallaga river presents a great dynamism, evidencing that in the period of analysis it has occurred in a sector, which has changed its direction, leaving an abandoned channel, the dynamics is along its bed, noting that in the areas where the river changes direction, it has migrated even up to more than 2 km.

The Huallaga River is one of the main Amazon rivers. The research area located in the Amazon plain is characterized by presenting a homogeneous relief, however due to the dynamics of the river the physiographic aspect is varied, these range from the flood areas to higher areas called hills. The flow regime varies throughout the year, showing months of low water and others with abundant recharge, the average flow is 2 969.5 m3/s, in the research area the average width is 325 m and has a maximum depth of 16 m. Due to its dimensions, the Huallaga river presents a great dynamism, evidencing that in the period of analysis it has occurred in a sector, which has changed its direction, leaving an abandoned channel, the dynamics is along its bed, noting that in the areas where the river changes direction, it has migrated even up to more than 2 km.