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238 páginas, 75 mapas.

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Machu Picchu Peruvian station is located on King George Island, South Shetland Islands, Antarctic Peninsula. Hydrogeology research were conducted during the austral summer 2015, we took groundwater samples in 7 piezometers for analysis of major and minor components, and dissolved metals. Machu Picchu aquifer is a detrital aquifer and it is composed of glacial, alluvial, marine, fluvial, alluvial fluvial and alluvial glacial deposits. Lithological data in piezometers show that about 3 meters deep, there are 3 horizons (Ng et al., 2015): Horizon H1 (more superficial, permeable and porous soil), Horizon 2 (intermediate, semi-permeable to impermeable) and Horizon 3 (depper horizon, permeable and porous ground where groundwater is stored). Groundwater flow is from South to North. Electrical conductivity in the piezometers are low: 92.45 (PZ-08), 126.1 (PZ-07), 218.0 (PZ-04), 219.2 (PZ-03), 21...

El estudio del permafrost es ampliamente realizado tanto en los polos norte y sur, como en regiones montañosas en todo el mundo. Actualmente existe una gran preocupación, debido a que las áreas de permafrost se están reduciendo a causa del aumento de la temperatura producido por el cambio climático. El presente trabajo, muestra los primeros registros de permafrost en los alrededores de la Estación Científica Antártica Machu Picchu (ECAMP) muy cerca de la superficie, tanto de manera directa mediante excavaciones, como empleando dataloggers de temperatura. El análisis de datos corresponde a sensores instalados en el ANTAR XXIV (2017) y XXV (2018). El gran descubrimiento y preocupación, es el permafrost ubicado debajo del módulo principal de la estación, que sería de reciente formación a causa de generar menor radiación y propiciar menor temperatura en la base de la estación...

4 páginas.

Machu Picchu Peruvian Antarctic scientific station is a research installation on King George Island, South Shetland Islands (Antarctic Peninsula), was founded in 1988, as temporal scientific base, and it‘s open in austral summer. In January and February 2014, INGEMMET hydrogeological preliminary studies conducted around the Peruvian base to identify an aquifer. Our work was focused to perform a hydrogeological classification of materials by surface mapping, make subsurface explorations (through four piezometers) and take underground and surface water samples, for identify a potential aquifer body. This year during the ANTAR XXIII expedition, we start the Project: ―Hydrogeology of Machu Picchu aquifer, hydroclimatic implications‖. These studies pretend know the characteristics of the aquifer, hydrochemical and isotopic characteristics of groundwater and new prospects for improvement...

A geoelectrical survey using electrical resistivity tomographies was carried out in January 2019 under the facilities of the Peruvian Antarctic Station Machu Picchu. The station is located in the Admiralty Bay of King George Island of the South Shetland Islands archipelago. The main objective of the survey was estimating the depth and the lateral extent of the frozen ground found beneath the main building of the Machu Picchu station during maintenance work performed in the antarctic summer of 2018. Two rectangular shaped buildings of the Machu Picchu Antarctic Station were chosen to measure the ground electrical resistivity beneath them. In the biggest building the electrical profiles crossed 14 m beneath it along its smallest dimension; in the other (a refuge) the electrical profile crossed 7 m beneath the building, also along its smallest dimension. To carry out the geoelectrical profi...

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Documento presentado en Conference XXXIV SCAR 'Antarctica in the Global Earth System: From the Poles to the Tropics', Kuala Lumpur, 20-30 August 2016.

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317 páginas. Informe preparado para la Mesa de Diálogo de Evaluación Ambiental Sanitaria del Caso Lauricocha - Raura.

During the Peruvian Antarctic Expedition ANTAR XXV expedition (2017-2018 austral summer), a sampling campaign was developed in Mackellar Inlet, Antarctica. Several studies in sediments in Admiralty Bay and around the permanent scientific research stations shows high concentrations of Cu and Zn, associated with the natural mineralized rocks presents around Keller Peninsula (Machado et al, 2001; Trevizani et al, 2016). But we do not have reference values in the McKellar Inlet. Around the Mackellar Inlet, the geology shows andesitic and dacitic volcanic successions cut by dioritic intrusions. A small alteration halo was observed at the west near to Domeyko Glacier, and an extended alteration zone is present in Keller Peninsula. The main objective of this work was to evaluate the presence of heavy metals and the possibility of human contamination in this particular area, due to the proximity...

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Global climate changes have a significant impact on the fragile ecosystems of Antarctica. These processes involve significant changes since the last glaciations, one product being exposure of areas with fracturing and weathering of rocks in Antarctica.The melting exposed surfaces of rocks, causing its disintegration due to physical or chemical and even organic processes; this decay involves the decomposition of minerals that are susceptible to these changes and tend to form new compounds. Undergoing environmental disturbances because of human disturbance, Antarctica is a suitable place to conduct a study on the geochemical characteristics of all elements present in the soil, which are closely related to the composition of the original rock. The preliminary reconnaissance and mapping of geological units were defined by Birkenmajer (1980) and subsequent work. Kraus et al., (2010) define re...

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