Cambio Climático Actual, Lluvias Torrenciales Y Deslaves Previo A La Evolución Del Imperio Inca Y La Civilización En La Isla De Pascua, Efectos Similares Hacia El 2030
Authors: Roque Garcia Ruiz, Eduardo Garcia Romero
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Climatic change that is being felt actually, is related to similar processes that occurred in Peru and on the island of Easter, before its evolution from XIIIth century, after the effects of torrential rains and landslides that modified the topographic relief in the places where both cultures developed.
The Incas from their first king Manco Capac in the XIIIth century, conformed cultivation terraces on the high grade slopes, using terraces or stone walls, built mostly in topographic forms of amphitheatres product of instability in the past. Moais on the island of Pascuas were partially hidden by mudslides in the past, whose inhabitants from Polynesia populated for the second time the islands at the beginning of the year 1200 being organized by areas of cultivation, with local deforestation of the island, standing out after the Inca visit in the XVth century the construction of the ahu where were recovered and placed the moais.
The Incas conformed cultivation terraces on the high grade slopes, using terraces or stone walls, built mostly in topographic forms of amphitheatres product of instability in the past, whereas the Pascuenses were organized by areas of culture, with local deforestation of the island, standing out after the Inca visit in the XVth century the construction of the ahu where the moais were placed.
On Easter Island, a large part of the moais are covered by land, with thicknesses of up to 7 meters, relating this huge thickness of sediments to stability problems in the prominent volcanic relief, caused by rains of greater duration and intensity. Similar rainfall climatic conditions predominated in the Andean area, causing stability problems on mountain slopes, with the development of amphitheater topographic forms, and large sediment inputs to river valleys, with conformation of colluvial cones. This is due to rainfall saturation between the 11th and 12th centuries, following a global increase in temperature, related by several researchers with the current global warming.
At present, the exponential increase of hydrological events from 1980 to 2017, related to torrential rains and landslides, predicts a greater number of events by 2030, possibly with a progressive decrease in temperature. From this date to 2030, the competent bodies of each nation will have to assess the risks of the populated areas at the foot of mount, in order to construct works to lessen the effects of landslides and the relocation if necessary.