哥斯达黎加佛得角海滩在秘鲁利马的春天的起源
Origin of the springs of Costa Verde beach in Lima Peru
摘要：
本文试图确定位于秘鲁利马省Barranco、Miraflores和Magdalena地区的Costa Verde海滩上的泉水来源。这些泉水出现在海岸线附近，来自80米高悬崖的下层。他们在70年代初开始的农业土地城市化进程中幸存下来，这减少了利马的地下蓄水层，并消除了悬崖的漏水。为了确定泉水的来源，对五个泉水的样本进行了同位素、物理、化学和细菌学分析。与利马含水层水相比，Costa Verde泉水中的同位素浓度已耗尽，利马含水层水通过Rimac河的渗透重新充电。这些浓度的测量值表明，来自Costa Verde泉水的水应该来自上游和中部盆地的直接补给，这是由于降雨或海拔约3600米的河流的渗透。现场测量的电导率和温度与利马含水层的结果相似。实验室分析表明，总大肠菌群或粪大肠菌群的水平不高，排除了利马污水系统可能泄漏的可能性。
英文摘要：
This paper tries to determine the origin of springs on the Costa Verde beach, located in the district of Barranco, Miraflores and Magdalena, province of Lima, Peru. These springs emerge near the shoreline, from the lower layers of a 80 meter high cliff. They have survived the process of urbanization of agricultural land, started in the early 70, which decreased the water table aquifer of Lima, and wiped the water leaks from the cliffs. To identify the source of the springs, isotopic, physical, chemical and bacteriological analysis was carried out for samples from five springs. The isotopic concentrations in waters from Costa Verde springs are depleted compared to those obtained for Lima aquifer waters, which is recharged by infiltration of the Rimac River. The measured values of those concentrations suggest that water from the Costa Verde springs should come from a direct recharge in the upper and middle basin, due to infiltration of rainfall or the river at an altitude of about 3600 m. Conductivity and temperature, measured in situ, are similar to those obtained on Lima aquifers. The laboratory analysis showed no significant levels of total or fecal coliform, discarding possible leakage from Lima sewerage.
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