末次盛冰期以来内华达Coropuna西南坡平衡线高度波动(Cordillera Ampato, Perú)

Q3 Social Sciences

Pirineos Pub Date : 2015-12-30 DOI:10.3989/PIRINEOS.2015.170008

Néstor Campos

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引用次数: 2

摘要

本研究的主要目的是重建内华达Coropuna西南坡的LLGM(当地末次盛冰期)、1955年和2007年冰期，以获得有价值的变化信息，并分析冰川演化。为此，利用平衡线高度(ELA)指标作为参考，采用面积x高度平衡比(AABR)方法，根据该地区高于或低于ELA的距离对质量平衡进行加权。LLGM的ELA为4762 m, 1955年为5779 m, 2007年为5850 m，这意味着从LLGM到2007年的垂直位移为1088 m，从1955年到2007年的垂直位移为71 m。1955—2007年，冰川面积减少了21.5%，温度变化幅度为9.13 oC (0.0091oC/m)。冰川的冰使它们对气候研究有价值，这种方法提供了定量信息，对这些数据的分析可能有助于研究气候变化和未来预测的气候趋势。

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Equilibrium Line Altitude Fluctuation on the South West Slope of Nevado Coropuna Since The Last Glacial Maximum (Cordillera Ampato, Perú)

The main aim of this research was to reconstruct the LLGM (local last glacial maximum), 1955 and 2007 glacial phases on the South West slope of Nevado Coropuna to obtain valuable information on the changes that have occurred and analyze the glacier evolution. For this purpose the ELA (Equilibrium Line Altitude) indicator has been used as a reference, with the AABR (Area x Altitude Balance Ratio) method, based on the principle of weighting the mass balance according to the distance above or below the ELA of that area. An ELA of 4762 m was obtained for the LLGM, 5779 m for 1955 and 5850 m for 2007, implying a vertical shift of 1088 m from the LLGM to 2007 and of 71 m from 1955 to 2007. The total glaciated surface was reduced by 21.5% between 1955 and 2007 and the temperature shift from LLGM to 2007 was 9.13 oC (0.0091oC/m). The ice of glaciers makes them valuable for climate research, this method offers quantitative information and the analysis of this data may contribute to research into climate change and climatic trends for future predictions.

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来源期刊

Pirineos Environmental Science-Ecology

CiteScore

1.20

自引率

0.00%

发文量

审稿时长

28 weeks

期刊介绍： Pirineos. A Journal on Mountain Ecology publishes papers dealing with the dynamics of mountain ecosystems, that is, with processes and relationships established between living beings and their environment, in the highest regions on earth. Therefore it tries to explain the global functioning of mountainous areas and the spatial organization of processes and resources, with an integrated perspective in which man performs an important role.