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 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.

La erosión hídrica y los deslizamientos son los dos procesos de mayor notoriedad en los interfluvios (laderas). El primero se refleja en laderas con cárcavas debido al impacto de las gotas de agua provenientes de las lluvias sobre una topografía muy inclinada. El segundo es el movimiento en masa del material superficial y que a su vez es muy erosivo porque es «cortante» e impacta fuertemente en los conos deyectivos de las cárcavas o en el talud de derrubios. La roca de basamento en este caso es un intrusivo que está muy fracturado y es poroso siendo otro factor favorable para la erosión.

Watersheds are large natural units where the hydrological cycle takes shape in the continents, with water being the central element. Normally, these units are delimited qualitatively considering a continuous dividing line that roughly joins the points of the high parts of positive geoforms such as mountains or hills. Taking into account the natural criterion of drainage, the watershed is structured by a network of streams or channels and in turn can be classified or sorted. The aforementioned drainage network is subdivided into sub-basins, one or two of these can give rise to the main current that is normally a river and in turn determine the head of the basin. The classification of drainage basins is one of the methods known universally to delimit units and subunits and that must be taken into account to solve the problems of delimitation of headwaters of watersheds in our country. Curr...

Geomorphologically, the La Yesera torrent is a unit of the relief that is characterized by the occurrence of deep mass movements because intense weathering and erosion processes occur in its reception basin. Geologically, the reception basin of the said unit is a batolith with rocks deformed by fractures and failures. The drainage channel and fan of the torrent is covered with powerful layers of mud (sand) and blocks (clasts and bowling). The proluvial fan of the torrent is very dissected due to the impact and the sharp action of alluvium (huaycos) during the recent quaternary (last 10,000 years). The aforementioned proluvial fan is located adjacent to the Ica River, on its left bank. The paved road that connects the town of San José Los Molinos with the city of Ica cuts the aforementioned range into two sectors. The first is adjacent to the Ica River that is occupied by farmland and so...

The Hydrographic Unit of the Chucumayo Stream is characterized by mountain reliefs, with a typical hydric regime of semi-arid environments. Soils for clean crops are scarce and are located in alluvial terraces in the lower part of the mentioned sub-basin. While in the mountains the slopes are very steep with soils of colluvial origin and with xerophytic vegetation or scrub. Traditionally, in these spaces, the population has adapted these mountain ecosystems by building agricultural terraces. In some sectors of the upper or head part of the sub-basin pastures and lagoons are located that could be conserved and provide an environmental service (tourism, water recharge or scientific research). On the other hand, the expansion of the urban areas of the town of Matucana towards the lower part of the sub-basin of the Chucumayo stream is one more example of the urbanization process that is taki...

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 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.

La erosión hídrica y los deslizamientos son los dos procesos de mayor notoriedad en los interfluvios (laderas). El primero se refleja en laderas con cárcavas debido al impacto de las gotas de agua provenientes de las lluvias sobre una topografía muy inclinada. El segundo es el movimiento en masa del material superficial y que a su vez es muy erosivo porque es «cortante» e impacta fuertemente en los conos deyectivos de las cárcavas o en el talud de derrubios. La roca de basamento en este caso es un intrusivo que está muy fracturado y es poroso siendo otro factor favorable para la erosión.

Watersheds are large natural units where the hydrological cycle takes shape in the continents, with water being the central element. Normally, these units are delimited qualitatively considering a continuous dividing line that roughly joins the points of the high parts of positive geoforms such as mountains or hills. Taking into account the natural criterion of drainage, the watershed is structured by a network of streams or channels and in turn can be classified or sorted. The aforementioned drainage network is subdivided into sub-basins, one or two of these can give rise to the main current that is normally a river and in turn determine the head of the basin. The classification of drainage basins is one of the methods known universally to delimit units and subunits and that must be taken into account to solve the problems of delimitation of headwaters of watersheds in our country. Curr...

Geomorphologically, the La Yesera torrent is a unit of the relief that is characterized by the occurrence of deep mass movements because intense weathering and erosion processes occur in its reception basin. Geologically, the reception basin of the said unit is a batolith with rocks deformed by fractures and failures. The drainage channel and fan of the torrent is covered with powerful layers of mud (sand) and blocks (clasts and bowling). The proluvial fan of the torrent is very dissected due to the impact and the sharp action of alluvium (huaycos) during the recent quaternary (last 10,000 years). The aforementioned proluvial fan is located adjacent to the Ica River, on its left bank. The paved road that connects the town of San José Los Molinos with the city of Ica cuts the aforementioned range into two sectors. The first is adjacent to the Ica River that is occupied by farmland and so...

La Unidad hidrográfica de la quebrada Chucumayo se caracteriza por los relieves de montañas, con un régimen hídrico típico de medios semiáridos. Los suelos para cultivos en limpio son escasos y se localizan en terrazas aluviales de la parte baja de la mencionada subcuenca. Mientras que en las montañas las laderas son muy inclinadas con suelos de origen coluvial y con vegetación xerofita o matorrales. Tradicionalmente, en esos espacios la población ha adaptado esos ecosistemas de montaña construyendo terrazas agrícolas. En algunos sectores de la partes alta o cabecera de la subcuenca se localizan pastos y lagunas que podrían conservarse y brindar un servicio ambiental (turismo, recarga hídrica o investigación científica). De otra parte, la expansión de las áreas urbanas de la localidad de Matucana hacia la parte baja de la subcuenca de la quebrada Chucumayo, es un ejemplo...

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 sparial planification and lió' too! 10 utilized in our country implicate lo {he hidrograficbasinlike unitslo analysis.ln this investigationcoulddo theanalysis (O the physical. social. economic aspect of the basin tu Omas s river to specially tocare and explain the potentials. the principuls problems aud limitations for example poverty to naturals resource, deticit {O equipment to sen'ice. migra/ion to (he people ami povertypreseut to tlie state. ln this investigation to do emphasis to district to Coayllo.because in this place /0 summarize tlie problematic of the basin.

The spatial planification and his tool to utilized in our country implicate to the hidrografic basin like units to analysis. In this investigation could do the analysis to the physical, social, economic aspect of the basin to Omas’s river to specially locate and explain the potentials, the principals problems and limitations for example poverty to naturals resource, deficit to equipment to service, migration to the people and poverty present to the state. In this investigation to do emphasis to district to Coayllo, because in this place to summarize the problematic of the basin.

The spatial planification and his tool to utilized in our country implicate to the hidrografic basin like units to analysis. In this investigation could do the analysis to the physical, social, economic aspect of the basin to Omas’s river to specially locate and explain the potentials, the principals problems and limitations for example poverty to naturals resource, deficit to equipment to service, migration to the people and poverty present to the state. In this investigation to do emphasis to district to Coayllo, because in this place to summarize the problematic of the basin.

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 sparial planification and lió' too! 10 utilized in our country implicate lo {he hidrograficbasinlike unitslo analysis.ln this investigationcoulddo theanalysis (O the physical. social. economic aspect of the basin tu Omas s river to specially tocare and explain the potentials. the principuls problems aud limitations for example poverty to naturals resource, deticit {O equipment to sen'ice. migra/ion to (he people ami povertypreseut to tlie state. ln this investigation to do emphasis to district to Coayllo.because in this place /0 summarize tlie problematic of the basin.